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Visually stunning. Demonstrates test procedures to assess tactile sensory skills related to speaking, chewing, and swallowing. Tests include tactile sensitivity, tactile acuity, two-point discrimination, tactile localization, and tactile extinction. We digitized and uploaded this film from the A/V Geeks Archives. Email us at footage@avgeeks.com if you have questions about the footage and are interested in using it in your project.
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Topic: experiment

Books to Borrow

49 49

Spiel - das Wissen schafft : grosse Ausgabe mit über 400 Anregungen zum Experimentieren und Beobachten der Natur

Jul 11, 2012 07/12

by Press, Hans Jürgen

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Topic: Experiment

Arxiv.org

5 5.0

Measurement of transverse momentum relative to dijet systems in PbPb and pp collisions at sqrt(s[NN]) = 2.76 TeV

Jun 28, 2018 06/18

by CMS Collaboration

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An analysis of dijet events in PbPb and pp collisions is performed to explore the properties of energy loss by partons traveling in a quark-gluon plasma. Data are collected at a nucleon-nucleon center-of-mass energy of 2.76 TeV at the LHC. The distribution of transverse momentum (pT) surrounding dijet systems is measured by selecting charged particles in different ranges of pT and at different angular cones of pseudorapidity and azimuth. The measurement is performed as a function of centrality...
Topics: High Energy Physics - Experiment, Nuclear Experiment
Source: http://arxiv.org/abs/1509.09029

Arxiv.org

5 5.0

$Measurement of the $e^+e^- \to K^+K^-\pi^+\pi^-$ cross section with the CMD-3 detector at the VEPP-2000 collider$

Measurement of the $e^+e^- \to K^+K^-\pi^+\pi^-$ cross section with the CMD-3 detector at the VEPP-2000 collider

Jun 28, 2018 06/18

by D. N. Shemyakin; G. V. Fedotovich; R. R. Akhmetshin; A. N. Amirkhanov; A. V. Anisenkov; V. M. Aulchenko; V. Sh. Banzarov; N. S. Bashtovoy; A. E. Bondar; A. V. Bragin; S. I. Eidelman; D. A. Epifanov; L. B. Epshteyn; A. L. Erofeev; S. E. Gayazov; A. A. Grebenuk; S. S. Gribanov; D. N. Grigoriev; F. V. Ignatov; V. L. Ivanov; S. V. Karpov; V. F. Kazanin; I. A. Koop; A. A. Korobov; O. A. Kovalenko; A. N. Kozyrev; E. A. Kozyrev; P. P. Krokovny; A. E. Kuzmenko; A. S. Kuzmin; I. B. Logashenko; A. P....

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The process $e^+e^- \to K^+K^-\pi^+\pi^-$ has been studied in the center-of-mass energy range from 1500 to 2000\,MeV using a data sample of 23 pb$^{-1}$ collected with the CMD-3 detector at the VEPP-2000 $e^+e^-$ collider. Using about 24000 selected events, the $e^+e^- \to K^+K^-\pi^+\pi^-$ cross section has been measured with a systematic uncertainty decreasing from 11.7\% at 1500-1600\,MeV to 6.1\% above 1800\,MeV. A preliminary study of $K^+K^-\pi^+\pi^-$ production dynamics has been...
Topics: High Energy Physics - Experiment, Nuclear Experiment
Source: http://arxiv.org/abs/1510.00654

Arxiv.org

3 3.0

QCD Exotics

Jun 30, 2018 06/18

by Stephen Lars Olsen

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QCD-motivated models for hadrons predict an assortment of "exotic" hadrons that have structures that are more complex then the quark-antiquark mesons and three-quark baryons of the original quark-parton model. These include pentaquark baryons, the six-quark H-dibaryon, and tetra-quark, hybrid, and glueball mesons. Despite extensive experimental searches, no unambiguous candidates for any of these exotic configurations have yet to be identified. On the other hand, a number of meson...
Topics: Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1403.1254

Arxiv.org

5 5.0

High precision determination of the $Q^2$-evolution of the Bjorken Sum

Jun 30, 2018 06/18

by A. Deur; Y. Prok; V. Burkert; D. Crabb; F. -X. Girod; K. A. Griffioen; N. Guler; S. E. Kuhn; N. Kvaltine

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We present a significantly improved determination of the Bjorken Sum for 0.6$\leq Q^{2}\leq$4.8 GeV$^{2}$ using precise new $g_{1}^{p}$ and $g_{1}^{d}$ data taken with the CLAS detector at Jefferson Lab. A higher-twist analysis of the $Q^{2}$-dependence of the Bjorken Sum yields the twist-4 coefficient $f_{2}^{p-n}=-0.064 \pm0.009\pm_{0.036}^{0.032}$. This leads to the color polarizabilities $\chi_{E}^{p-n}=-0.032\pm0.024$ and $\chi_{B}^{p-n}=0.032\pm0.013$. The strong force coupling is...
Topics: Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1405.7854

Arxiv.org

4 4.0

$${\rm K}_{\rm S}^{0}$ and $\Lambda$ Production in Charged Particle Jets in p--Pb Collisions at $\sqrt{s_{\rm NN}}=5.02$ TeV with ALICE$

${\rm K}_{\rm S}^{0}$ and $\Lambda$ Production in Charged Particle Jets in p--Pb Collisions at $\sqrt{s_{\rm NN}}=5.02$ TeV with ALICE

Jun 30, 2018 06/18

by Xiaoming Zhang; for the ALICE Collaboration

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We study the production of ${\rm K}_{\rm S}^{0}$ mesons and $\Lambda$ baryons in jets in p--Pb collisions at $\sqrt{s_{\rm NN}}=5.02$ TeV with ALICE at the LHC. The $p_{\rm T}$-differential density of the particles produced in jets is compared to the inclusive distributions and the $\Lambda/{\rm K}_{\rm S}^{0}$ ratio is reported in bins of multiplicity of the collisions. The hard scatterings are selected on an event-by-event basis using the anti-$k_{\rm T}$ clustering algorithm with resolution...
Topics: Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1408.2672

Arxiv.org

4 4.0

New limits on double beta processes in 106-Cd

Jun 29, 2018 06/18

by V. I. Tretyak; P. Belli; R. Bernabei; V. B. Brudanin; F. Cappella; V. Caracciolo; R. Cerulli; D. M. Chernyak; F. A. Danevich; S. d'Angelo; A. Di Marco; A. Incicchitti; M. Laubenstein; V. M. Mokina; D. V. Poda; O. G. Polischuk; I. A. Tupitsyna

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A radiopure cadmium tungstate crystal scintillator, enriched in 106-Cd to 66%, with mass of 216 g (106-CdWO4) was used in coincidence with four ultra-low background HPGe detectors contained in a single cryostat to search for double beta decay processes in 106-Cd. New improved half-life limits on the double beta processes in 106-Cd have been set on the level of 1e20-1e21 yr after 13085 h of data taking deep underground (3600 m w.e.) at the Gran Sasso National Laboratories of INFN (Italy). In...
Topics: Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1601.05698

Arxiv.org

8 8.0

Results from the NA61/SHINE ion program

Jun 30, 2018 06/18

by Tobiasz Czopowicz; for the NA61/SHINE Collaboration

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The NA61/SHINE experiment aims to discover the critical point of strongly interacting matter and study properties of the onset of deconfinement. These goals are to be achieved by performing a two dimensional phase diagram ($T$-$\mu_{B}$) scan - measurements of hadron production properties in proton-proton, proton-nucleus and nucleus-nucleus interactions as a function of collision energy and system size. This contribution summarizes current the status and future plans as well as presents the...
Topics: Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1403.4392

Arxiv.org

4 4.0

Recent results and open questions on collective type phenomena from A-A to pp collisions

Jun 30, 2018 06/18

by M. Petrovici; C. Andrei; I. Berceanu; A. Bercuci; A. Herghelegiu; A. Pop

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A review of the main results on the collective type expansion of the compressed and hot fireball formed in heavy ion collisions and some remarks to be considered when comparing multiplicity wise phenomena taking place in A-A, p-A and pp collisions, are followed by a discussion of the experimental results which seem to evidence collective type phenomena in pp collisions at $\sqrt{s}$ = 7 TeV at high charged particle multiplicity. Correlations among the kinetic freeze-out temperature, the average...
Topics: Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1411.0869

Arxiv.org

3 3.0

Recent KLOE results on kaon physics

Jun 30, 2018 06/18

by E. Czerwiński

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A short review of two measurements recently published by KLOE/KLOE-2 collaborations is presented. Namely the most stringent limits of the CPT-violating parameters Delta a_mu for neutral kaons, and the absolute branching ratio of K+ --> pi+pi-pi+(gamma) decay. In addition a discussion of starting KLOE-2 project is performed.
Topics: Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1411.6641

Arxiv.org

4 4.0

Femtoscopy with identified hadrons in pp, pPb, and peripheral PbPb collisions in CMS

Jun 30, 2018 06/18

by Ferenc Siklér; for the CMS Collaboration

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Short range correlations of identified charged hadrons in pp (sqrt(s) = 0.9, 2.76, and 7 TeV), pPb (sqrt(sNN) = 5.02 TeV), and peripheral PbPb collisions (sqrt(sNN) = 2.76 TeV) are studied with the CMS detector at the LHC. Charged pions, kaons, and protons at low pT and in laboratory pseudorapidity |eta| < 1 are identified via their energy loss in the silicon tracker. The two-particle correlation functions show effects of quantum statistics, Coulomb interaction, and also indicate the role of...
Topics: Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1411.6609

Arxiv.org

3 3.0

$Spin Density Matrix of the $\omega$ in the Reaction $\bar{p} p \, \rightarrow \, \omega \pi^0$$

Spin Density Matrix of the $\omega$ in the Reaction $\bar{p} p \, \rightarrow \, \omega \pi^0$

Jun 30, 2018 06/18

by Crystal Barrel Collaboration; C. Amsler; F. H. Heinsius; H. Koch; B. Kopf; U. Kurilla; C. A. Meyer; K. Peters; J. Pychy; M. Steinke; U. Wiedner

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The spin density matrix of the $\omega$ has been determined for the reaction $\bar{p} p \, \rightarrow \, \omega \pi^0$ with unpolarized in-flight data measured by the Crystal Barrel LEAR experiment at CERN. The two main decay modes of the $\omega$ into $\pi^0 \gamma $ and $\pi^+ \pi^- \pi^0$ have been separately analyzed for various $\bar{p}$ momenta between 600 and 1940 MeV/c. The results obtained with the usual method by extracting the matrix elements via the $\omega$ decay angular...
Topics: Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1410.3743

Arxiv.org

6 6.0

Elliptic flow phenomenon at ATLAS

Jun 30, 2018 06/18

by Martin Spousta

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We summarize measurements of elliptic flow and higher order flow harmonics performed by the ATLAS experiment at the LHC. Results on event-averaged flow measurements and event-plane correlations in Pb+Pb collisions are discussed along with the event-by-event flow measurements. Further, we summarize results on flow in p+Pb collisions.
Topics: Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1406.5541

Arxiv.org

3 3.0

Production of light flavour hadrons at intermediate and high pT in pp, p-Pb and Pb-Pb collisions measured with ALICE

Jun 30, 2018 06/18

by Michael Linus Knichel; for the ALICE Collaboration

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Light flavour transverse momentum spectra at intermediate and high pT provide an important baseline for the measurement of perturbative QCD processes in pp, for the evaluation of initial state effects in p-Pb, and for investigating the suppression from parton energy loss in Pb-Pb collisions. The measurement of the nuclear modification factor RpPb for inclusive charged particles is extended up to 50 GeV/c in pT compared to our previous measurement and remains consistent with unity up the largest...
Topics: Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1408.0216

Arxiv.org

5 5.0

Detail study of the medium created in Au+Au collisions with high $p_T$ probes by the PHENIX experiment at RHIC

Jun 30, 2018 06/18

by Takao Sakaguchi; for the PHENIX collaboration

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Recent results on high $p_T$ identified hadrons in Au+Au collisions from the PHENIX experiment are presented. The $R_{\rm AA}$ for $\pi^0$ and $\eta$ are found to be very consistent. The second and fourth order collective flow of $\pi^0$s have been measured and found that $v_4/v_2^2$ is consistent with the one observed in lower $p_T$ region. Assuming the suppression of the $\pi^0$ yield at highest $p_T$ arises from energy loss of partons, we found that the energy loss is $L^3$ dependent, where...
Topics: Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1404.3201

Arxiv.org

4 4.0

The detection of back-to-back proton pairs in Charged-Current neutrino interactions with the ArgoNeuT detector in the NuMI low energy beam line

Jun 30, 2018 06/18

by R. Acciarri; C. Adams; J. Asaadi; B. Baller; T. Bolton; C. Bromberg; F. Cavanna; E. Church; D. Edmunds; A. Ereditato; S. Farooq; B. Fleming; H. Greenlee; G. Horton-Smith; C. James; E. Klein; K. Lang; P. Laurens; R. Mehdiyev; B. Page; O. Palamara; K. Partyka; G. Rameika; B. Rebel; M. Soderberg; J. Spitz; A. M. Szelc; M. Weber; T. Yang; G. P. Zeller

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Short range nucleon-nucleon correlations in nuclei (NN SRC) carry important information on nuclear structure and dynamics. NN SRC have been extensively probed through two-nucleon knock- out reactions in both pion and electron scattering experiments. We report here on the detection of two-nucleon knock-out events from neutrino interactions and discuss their topological features as possibly involving NN SRC content in the target argon nuclei. The ArgoNeuT detector in the Main Injector neutrino...
Topics: Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1405.4261

Arxiv.org

18 18

$Centrality evolution of the charged-particle pseudorapidity density over a broad pseudorapidity range in Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 2.76 TeV$

Centrality evolution of the charged-particle pseudorapidity density over a broad pseudorapidity range in Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 2.76 TeV

Jun 28, 2018 06/18

by ALICE Collaboration

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The centrality dependence of the charged-particle pseudorapidity density measured with ALICE in Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ over a broad pseudorapidity range is presented. This Letter extends the previous results reported by ALICE to more peripheral collisions. No strong change of the charged-particle pseudorapidity density distributions with centrality is observed, and when normalised to the number of participating nucleons in the collisions, the evolution over pseudorapidity with...
Topics: Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1509.07299

Arxiv.org

16 16

$Energy dependence of acceptance-corrected dielectron excess mass spectrum at mid-rapidity in Au+Au collisions at $\sqrt{s_{NN}} = 19.6$ and 200 GeV$

Energy dependence of acceptance-corrected dielectron excess mass spectrum at mid-rapidity in Au+Au collisions at $\sqrt{s_{NN}} = 19.6$ and 200 GeV

Jun 26, 2018 06/18

by STAR Collaboration; L. Adamczyk; J. K. Adkins; G. Agakishiev; M. M. Aggarwal; Z. Ahammed; I. Alekseev; J. Alford; A. Aparin; D. Arkhipkin; E. C. Aschenauer; G. Igo; W. W. Jacobs; H. Jang; K. Jiang; E. G. Judd; S. Kabana; D. Kalinkin; K. Kang; K. Kauder; H. W. Ke; G. S. Averichev; D. Keane; A. Kechechyan; Z. H. Khan; D. P. Kikola; I. Kisel; A. Kisiel; S. R. Klein; D. D. Koetke; T. Kollegger; L. K. Kosarzewski; A. Banerjee; L. Kotchenda; A. F. Kraishan; P. Kravtsov; K. Krueger; I. Kulakov; L....

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The acceptance-corrected dielectron excess mass spectra, where the known hadronic sources have been subtracted from the inclusive dielectron mass spectra, are reported for the first time at mid-rapidity $|y_{ee}|
Topics: Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1501.05341

Arxiv.org

13 13

$Feasibility Studies of Exclusive Diffractive Bremsstrahlung Measurement at RHIC Energies$

Feasibility Studies of Exclusive Diffractive Bremsstrahlung Measurement at RHIC Energies

Jun 26, 2018 06/18

by J. Chwastowski; A. Cyz; L. Fulek; R. Kycia; B. Pawlik; R. Sikora; J. Turnau

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Feasibility studies of an observation of the exclusive diffractive bremsstrahlung at RHIC at $\sqrt{s} = 200$~GeV and at $\sqrt{s} = 500$~GeV are reported. A simplified approach to the photon and the scattered proton energy reconstruction is used. Influence of possible backgrounds is discussed.
Topics: Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1501.06264

Arxiv.org

17 17

$Measurement of pion, kaon and proton production in proton-proton collisions at $\sqrt{s}=7$ TeV$

Measurement of pion, kaon and proton production in proton-proton collisions at $\sqrt{s}=7$ TeV

Jun 27, 2018 06/18

by ALICE Collaboration

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The measurement of primary $\pi^{\pm}$, K$^{\pm}$, p and $\overline{p}$ production at mid-rapidity ($|y|
Topics: High Energy Physics - Experiment, Nuclear Experiment
Source: http://arxiv.org/abs/1504.00024

Arxiv.org

5 5.0

Beam Energy Dependence of Dielectron Production in Au+Au Collisions from STAR at RHIC

Jun 30, 2018 06/18

by Patrick Huck; for the STAR Collaboration

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We present the energy-dependent study of dielectron production in 0-80% minimum-bias Au+Au collisions at $\sqrt{s_{NN}}$ energies of 19.6, 27, 39, and 62.4 GeV in STAR. Invariant mass ($M_{ee}$) and transverse momentum ($p_T$) differential measurements of dielectron yields are compared to cocktail simulations of known hadronic sources and semi-leptonic charmed decays. The enhancement (excess yield) prominent in the Low-Mass Region (LMR) over the cocktail at all energies, is further compared to...
Topics: Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1409.5675

Arxiv.org

5 5.0

$Measurements of $\pi^\pm$, $K^\pm$, $K^0_S$, $\Lambda$ and proton production in proton-carbon interactions at 31 GeV/$c$ with the NA61/SHINE spectrometer at the CERN SPS$

Measurements of $\pi^\pm$, $K^\pm$, $K^0_S$, $\Lambda$ and proton production in proton-carbon interactions at 31 GeV/$c$ with the NA61/SHINE spectrometer at the CERN SPS

Jun 28, 2018 06/18

by N. Abgrall; A. Aduszkiewicz; Y. Ali; E. Andronov; T. Antićić; N. Antoniou; B. Baatar; F. Bay; A. Blondel; J. Blümer; M. Bogomilov; J. Puzović; W. Rauch; M. Ravonel; A. Redij; R. Renfordt; E. Richter-Was; A. Robert; D. Röhrich; E. Rondio; M. Roth; A. Brandin; A. Rubbia; B. T. Rumberger; A. Rustamov; M. Rybczynski; A. Sadovsky; K. Sakashita; R. Sarnecki; K. Schmidt; T. Sekiguchi; I. Selyuzhenkov; A. Bravar; A. Seryakov; P. Seyboth; D. Sgalaberna; M. Shibata; M. Słodkowski; P. Staszel; G....

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Measurements of hadron production in p+C interactions at 31 GeV/c are performed using the NA61/ SHINE spectrometer at the CERN SPS. The analysis is based on the full set of data collected in 2009 using a graphite target with a thickness of 4% of a nuclear interaction length. Inelastic and production cross sections as well as spectra of $\pi^\pm$, $K^\pm$, p, $K^0_S$ and $\Lambda$ are measured with high precision. These measurements are essential for improved calculations of the initial neutrino...
Topics: High Energy Physics - Experiment, Nuclear Experiment
Source: http://arxiv.org/abs/1510.02703

Arxiv.org

6 6.0

Ultra-Peripheral Collisions with gold ions in STAR

Jun 29, 2018 06/18

by Spencer R. Klein for the STAR Collaboration

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In 2010, the STAR Collaboration collected 38 million low-multiplicity triggers for ultra-peripheral collision studies. We present new results involving photonuclear interactions in ultra-peripheral relativistic heavy ion collisions (UPCs), based on an analysis of 384,000 photoproduced pion pairs, from $\rho$, $\omega$ and direct $\pi^+\pi^-$ pair production.The $\omega$ component is clearly visible through its interference with the $\rho$ peak. The relative amplitudes of the three components...
Topics: Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1606.02754

Arxiv.org

5 5.0

Upsilon production in U+U collisions at 193 GeV with the STAR experiment

Jun 29, 2018 06/18

by STAR Collaboration; L. Adamczyk; J. K. Adkins; G. Agakishiev; M. M. Aggarwal; Z. Ahammed; I. Alekseev; D. M. Anderson; R. Aoyama; A. Aparin; D. Arkhipkin; B. Huang; T. Huang; X. Huang; P. Huck; T. J. Humanic; G. Igo; W. W. Jacobs; A. Jentsch; J. Jia; K. Jiang; E. C. Aschenauer; S. Jowzaee; E. G. Judd; S. Kabana; D. Kalinkin; K. Kang; K. Kauder; H. W. Ke; D. Keane; A. Kechechyan; Z. Khan; M. U. Ashraf; D. P. Kikoła; I. Kisel; A. Kisiel; L. Kochenda; D. D. Koetke; L. K. Kosarzewski; A. F....

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We present a measurement of the inclusive production of Upsilon mesons in U+U collisions at 193 GeV at mid-rapidity (|y| < 1). Previous studies in central Au+Au collisions at 200 GeV show a suppression of Upsilon(1S+2S+3S) production relative to expectations from the Upsilon yield in p+p collisions scaled by the number of binary nucleon-nucleon collisions (Ncoll), with an indication that the Upsilon(1S) state is also suppressed. The present measurement extends the number of participant...
Topics: Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1608.06487

Arxiv.org

5 5.0

$$\Upsilon$ Production in Heavy-Ion Collisions from the STAR Experiment$

$\Upsilon$ Production in Heavy-Ion Collisions from the STAR Experiment

Jun 30, 2018 06/18

by Zaochen Ye

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In these proceedings, we present recent results of $\Upsilon$ measurements in heavy-ion collisions from the STAR experiment at RHIC. Nuclear modification factors ($R_{AA}$) for $\Upsilon(1S)$ and $\Upsilon(1S+2S+3S)$ in U+U collisions at \sqrtsNN\ = 193 GeV are measured through the di-electron channel and compared to those in Au+Au collisions at \sqrtsNN\ = 200 GeV and Pb+Pb collisions at \sqrtsNN\ = 2.76 TeV. The ratio between the $\Upsilon(2S+3S)$ and $\Upsilon(1S)$ yields in Au+Au collisions...
Topics: High Energy Physics - Experiment, Nuclear Experiment
Source: http://arxiv.org/abs/1702.05651

Arxiv.org

4 4.0

$First $\pi K$ atom lifetime and $\pi K$ scattering length measurements$

First $\pi K$ atom lifetime and $\pi K$ scattering length measurements

Jun 30, 2018 06/18

by B. Adeva; L. Afanasyev; Y. Allkofer; C. Amsler; A. Anania; S. Aogaki; A. Benelli; V. Brekhovskikh; T. Cechak; M. Chiba; P. Chliapnikov; C. Ciocarlan; S. Constantinescu; P. Doskarova; D. Drijard; A. Dudarev; M. Duma; D. Dumitriu; D. Fluerasu; A. Gorin; O. Gorchakov; K. Gritsay; C. Guaraldo; M. Gugiu; M. Hansroul; Z. Hons; S. Horikawa; Y. Iwashita; V. Karpukhin; J. Kluson; M. Kobayashi; V. Kruglov; L. Kruglova; A. Kulikov; E. Kulish; A. Kuptsov; A. Lamberto; A. Lanaro; R. Lednicky; C. Mariñas;...

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The results of a search for hydrogen-like atoms consisting of $\pi^{\mp}K^{\pm}$ mesons are presented. Evidence for $\pi K$ atom production by 24 GeV/c protons from CERN PS interacting with a nickel target has been seen in terms of characteristic $\pi K$ pairs from their breakup in the same target ($178 \pm 49$) and from Coulomb final state interaction ($653 \pm 42$). Using these results the analysis yields a first value for the $\pi K$ atom lifetime of $\tau=(2.5_{-1.8}^{+3.0})$ fs and a first...
Topics: Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1403.0845

Arxiv.org

11 11

Measurement of azimuthal correlations between D mesons and charged hadrons with ALICE at the LHC

Jun 30, 2018 06/18

by Fabio Colamaria; on behalf of the ALICE Collaboration

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The comparison of angular correlations between charmed mesons and charged hadrons produced in pp, p-Pb and Pb-Pb collisions can give insight into the mechanisms through which charm quarks lose energy in a QGP medium, produced in ultra-relativistic heavy-ion collisions, and can help to recognize possible modifications of their hadronization induced by the presence of the QGP. The analysis of pp and p-Pb data and the comparison with predictions from pQCD calculations, besides constituting the...
Topics: Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1408.6038

Arxiv.org

3 3.0

$Event-by-event charge separation in Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 2.76 TeV with ALICE at the LHC$

Event-by-event charge separation in Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 2.76 TeV with ALICE at the LHC

Jun 30, 2018 06/18

by Sonia Parmar

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Relativistic heavy-ion collisions provide a unique opportunity to search for parity violation in non-central collisions. This could lead to charge separation perpendicular to the reaction plane. An event-by-event measurement of charge separation effect in Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 2.76 TeV using Sliding Dumbbell Method (SDM) is discussed in this article.
Topics: High Energy Physics - Experiment, Nuclear Experiment
Source: http://arxiv.org/abs/1703.09496

Arxiv.org

6 6.0

Measurement of inclusive jet production and nuclear modifications in pPb collisions at sqrt(s[NN]) = 5.02 TeV

Jun 29, 2018 06/18

by CMS Collaboration

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Inclusive jet production in pPb collisions at a nucleon-nucleon (NN) center-of-mass energy of sqrt(s[NN]) = 5.02 TeV is studied with the CMS detector at the LHC. A data sample corresponding to an integrated luminosity of 35 inverse nanobarns is analyzed. The jet transverse momentum spectra are studied in seven pseudorapidity intervals covering the range -2.0 < eta[CM] < 1.5 in the NN center-of-mass frame. The jet production yields at forward and backward pseudorapidity are compared and no...
Topics: Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1601.02001

Arxiv.org

9 9.0

$Limit on the Radiative Neutrinoless Double Electron Capture of $^{36}$Ar from GERDA Phase I$

Limit on the Radiative Neutrinoless Double Electron Capture of $^{36}$Ar from GERDA Phase I

Jun 29, 2018 06/18

by M. Agostini; M. Allardt; A. M. Bakalyarov; M. Balata; I. Barabanov; N. Barros; L. Baudis; C. Bauer; E. Bellotti; S. Belogurov; S. T. Belyaev; M. Stepaniuk; L. Vanhoefer; A. A. Vasenko; A. Veresnikova; K. von Sturm; V. Wagner; M. Walter; A. Wegmann; T. Wester; C. Wiesinger; G. Benato; H. Wilsenach; M. Wojcik; E. Yanovich; I. Zhitnikov; S. V. Zhukov; D. Zinatulina; K. Zuber; G. Zuzel; A. Bettini; L. Bezrukov; T. Bode; D. Borowicz; V. Brudanin; R. Brugnera; A. Caldwell; C. Cattadori; A....

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Neutrinoless double electron capture is a process that, if detected, would give evidence of lepton number violation and the Majorana nature of neutrinos. A search for neutrinoless double electron capture of $^{36}$Ar has been performed with germanium detectors installed in liquid argon using data from Phase I of the GERmanium Detector Array (GERDA) experiment at the Gran Sasso Laboratory of INFN, Italy. No signal was observed and an experimental lower limit on the half-life of the radiative...
Topics: Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1605.01756

Arxiv.org

5 5.0

Jet-like correlations with neutral pion triggers in pp and central Pb-Pb collisions at 2.76 TeV

Jun 29, 2018 06/18

by ALICE Collaboration

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We present measurements of two-particle correlations with neutral pion trigger particles of transverse momenta $8 < p_{\mathrm{T}}^{\rm trig} < 16~\mathrm{GeV}/c$ and associated charged particles of $0.5 < p_{\mathrm{T}}^{\rm assoc} < 10~\mathrm{GeV}/c$ versus the azimuthal angle difference $\Delta\varphi$ at midrapidity in pp and central Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=2.76$ TeV with ALICE. The new measurements exploit associated charged hadrons down to...
Topics: Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1608.07201

Arxiv.org

6 6.0

$Search for $2\nu\beta\beta$ decay of $^{136}$Xe to the 0$_1^+$ excited state of $^{136}$Ba with EXO-200$

Search for $2\nu\beta\beta$ decay of $^{136}$Xe to the 0$_1^+$ excited state of $^{136}$Ba with EXO-200

Jun 28, 2018 06/18

by EXO-200 Collaboration; :; J. B. Albert; D. J. Auty; P. S. Barbeau; D. Beck; V. Belov; M. Breidenbach; T. Brunner; A. Burenkov; G. F. Cao; C. Chambers; J. Chaves; B. Cleveland; M. Coon; A. Craycraft; T. Daniels; M. Danilov; S. J. Daugherty; J. Davis; S. Delaquis; A. Der Mesrobian-Kabakian; R. DeVoe; T. Didberidze; J. Dilling; A. Dolgolenko; M. J. Dolinski; M. Dunford; W. Fairbank; J. Farine; W. Feldmeier; S. Feyzbakhsh; P. Fierlinger; D. Fudenberg; R. Gornea; K. Graham; G. Gratta; C. Hall; M....

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EXO-200 is a single phase liquid xenon detector designed to search for neutrinoless double-beta decay of $^{136}$Xe to the ground state of $^{136}$Ba. We report here on a search for the two-neutrino double-beta decay of $^{136}$Xe to the first $0^+$ excited state, $0^+_1$, of $^{136}$Ba based on a 100 kg$\cdot$yr exposure of $^{136}$Xe. Using a specialized analysis employing a machine learning algorithm, we obtain a 90% CL half-life sensitivity of $1.7 \times 10^{24}$ yr. We find no...
Topics: High Energy Physics - Experiment, Nuclear Experiment
Source: http://arxiv.org/abs/1511.04770

Arxiv.org

6 6.0

$Anomalous evolution of the near-side jet peak shape in Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 2.76 TeV$

Anomalous evolution of the near-side jet peak shape in Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 2.76 TeV

Jun 29, 2018 06/18

by ALICE Collaboration

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The measurement of two-particle angular correlations is a powerful tool to study jet quenching in a $p_{\mathrm{T}}$ region inaccessible by direct jet identification. In these measurements pseudorapidity ($\Delta\eta$) and azimuthal ($\Delta\varphi$) differences are used to extract the shape of the near-side peak formed by particles associated to a higher $p_{\mathrm{T}}$ trigger particle ($1 < p_{\mathrm{T, trig}}
Topics: Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1609.06643

Arxiv.org

8 8.0

Measurement of the pi^0 -> e^+e^-gamma Dalitz decay at the Mainz Microtron

Jun 29, 2018 06/18

by P. Adlarson; F. Afzal; P. Aguar-Bartolomé; Z. Ahmed; C. S. Akondi; J. R. M. Annand; H. J. Arends; K. Bantawa; R. Beck; H. Berghäuser; M. Biroth; N. S. Borisov; A. Braghieri; W. J. Briscoe; S. Cherepnya; F. Cividini; C. Collicott; S. Costanza; A. Denig; M. Dieterle; E. J. Downie; P. Drexler; M. I. Ferretti Bondy; L. V. Fil'kov; S. Gardner; S. Garni; D. I. Glazier; D. Glowa; W. Gradl; G. M. Gurevich; D. J. Hamilton; D. Hornidge; G. M. Huber; T. C. Jude; A. Käser; V. L. Kashevarov; S. Kay; I....

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The Dalitz decay pi^0 -> e^+e^-gamma has been measured in the gamma p -> pi^0 p reaction with the A2 tagged-photon facility at the Mainz Microtron, MAMI. The value obtained for the slope parameter of the pi^0 electromagnetic transition form factor, a_pi = 0.030+/-0.010_tot, is in agreement with existing measurements of this decay and with recent theoretical calculations. The uncertainty obtained in the value of a_pi is lower than in previous results based on the pi^0 -> e^+e^-gamma...
Topics: Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1611.04739

Arxiv.org

7 7.0

$J/$\psi$ production as a function of charged-particle pseudorapidity density in p-Pb collisions at $\sqrt{s_{\rm NN}} = 5.02$ TeV$

J/$\psi$ production as a function of charged-particle pseudorapidity density in p-Pb collisions at $\sqrt{s_{\rm NN}} = 5.02$ TeV

Jun 30, 2018 06/18

by ALICE Collaboration

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We report measurements of the inclusive J/$\psi$ yield and average transverse momentum as a function of charged-particle pseudorapidity density ${\rm d}N_{\rm ch}/{\rm d}\eta$ in p-Pb collisions at $\sqrt{s_{\rm NN}} = 5.02$ TeV with ALICE at the LHC. The observables are normalised to their corresponding averages in non-single diffractive events. An increase of the normalised J/$\psi$ yield with normalised ${\rm d}N_{\rm ch}/{\rm d}\eta$ is observed at mid-rapidity and backward rapidity,...
Topics: Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1704.00274

Arxiv.org

4 4.0

Measurement of the centrality and pseudorapidity dependence of the integrated elliptic flow in lead-lead collisions at sqrt(s_NN)=2.76 TeV with the ATLAS detector

Jun 30, 2018 06/18

by ATLAS Collaboration

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The integrated elliptic flow of charged particles produced in Pb+Pb collisions at sqrt(s_NN)=2.76 TeV has been measured with the ATLAS detector using data collected at the Large Hadron Collider. The anisotropy parameter, v_2, was measured in the pseudorapidity range |eta|
Topics: Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1405.3936

Arxiv.org

3 3.0

$Exclusive J/$\psi$ photoproduction off protons in ultra-peripheral p-Pb collisions at $\sqrt{s_{\rm NN}}=5.02$ TeV$

Exclusive J/$\psi$ photoproduction off protons in ultra-peripheral p-Pb collisions at $\sqrt{s_{\rm NN}}=5.02$ TeV

Jun 30, 2018 06/18

by ALICE Collaboration

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We present the first measurement at the LHC of exclusive J/$\psi$ photoproduction off protons, in ultra-peripheral proton-lead collisions at $\sqrt{s_{\rm NN}}=5.02$ TeV. Events are selected with a dimuon pair produced either in the rapidity interval, in the laboratory frame, $2.5
Topics: Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1406.7819

Arxiv.org

24 24

$Single neutral pion production by charged-current $\bar{\nu}_\mu$ interactions on hydrocarbon at $\langle E_\nu \rangle = $ 3.6 GeV$

Single neutral pion production by charged-current $\bar{\nu}_\mu$ interactions on hydrocarbon at $\langle E_\nu \rangle = $ 3.6 GeV

Jun 27, 2018 06/18

by T. Le; J. L. Palomino; L. Aliaga; O. Altinok; A. Bercellie; A. Bodek; A. Bravar; W. K. Brooks; A. Butkevich; D. A. Martinez Caicedo; M. F. Carneiro; M. E. Christy; J. Chvojka; H. da Motta; J. Devan; S. A. Dytman; G. A. Díaz; B. Eberly; J. Felix; L. Fields; R. Fine; A. M. Gago; H. Gallagher; R. Gran; D. A. Harris; A. Higuera; K. Hurtado; M. Kordosky; E. Maher; S. Manly; W. A. Mann; C. M. Marshall; K. S. McFarland; C. L. McGivern; A. M. McGowan; J. Miller; J. G. Morfín; J. Mousseau; J. K....

eye 24

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Single neutral pion production via muon antineutrino charged-current interactions in plastic scintillator (CH) is studied using the \minerva detector exposed to the NuMI low-energy, wideband antineutrino beam at Fermilab. Measurement of this process constrains models of neutral pion production in nuclei, which is important because the neutral-current analog is a background for $\bar{\nu}_e$ appearance oscillation experiments. The differential cross sections for $\pi^0$ momentum and production...
Topics: High Energy Physics - Experiment, Nuclear Experiment
Source: http://arxiv.org/abs/1503.02107

Arxiv.org

15 15

Study of W boson production in pPb collisions at sqrt(s[NN]) = 5.02 TeV

Jun 27, 2018 06/18

by CMS Collaboration

eye 15

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The first study of W boson production in pPb collisions is presented, for bosons decaying to a muon or electron, and a neutrino. The measurements are based on a data sample corresponding to an integrated luminosity of 34.6 inverse nanobarns at a nucleon-nucleon centre-of-mass energy of sqrt(s[NN]) = 5.02 TeV, collected by the CMS experiment. The W boson differential cross sections, lepton charge asymmetry, and forward-backward asymmetries are measured for leptons of transverse momentum...
Topics: High Energy Physics - Experiment, Nuclear Experiment
Source: http://arxiv.org/abs/1503.05825

Arxiv.org

3 3.0

Charmonium photoproduction in ultra-peripheral p-Pb and Pb-Pb collisions at the LHC with the ALICE experiment

Jun 30, 2018 06/18

by Michal Broz; for the ALICE Collaboration

eye 3

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Vector mesons are copiously produced in ultra-peripheral collisions. In these collisions, the impact parameter is larger than the sum of the radii of two projectiles, implying that electromagnetic processes become dominant. The cross section for this process is sensitive to the gluon distribution and can therefore probe nuclear gluon shadowing (Pb-Pb) and the gluon structure function in the nucleon (p-Pb). The ALICE Collaboration has performed the first measurement of the coherent J/$\psi$ and...
Topics: Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1409.6169

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