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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

Arxiv.org

2 2.0

$Anisotropic flow of charged particles in Pb-Pb collisions at $\sqrt{s_{\rm NN}}=5.02$ TeV$

Anisotropic flow of charged particles in Pb-Pb collisions at $\sqrt{s_{\rm NN}}=5.02$ TeV

Jun 29, 2018 06/18

by ALICE Collaboration

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We report the first results of elliptic ($v_2$), triangular ($v_3$) and quadrangular flow ($v_4$) of charged particles in Pb-Pb collisions at $\sqrt{s_{\rm NN}}=5.02$ TeV with the ALICE detector at the CERN Large Hadron Collider. The measurements are performed in the central pseudorapidity region $|\eta|
Topics: Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1602.01119

Arxiv.org

2 2.0

Study of cold and hot nuclear matter effects on jets with direct photon triggered correlations from PHENIX

Jun 30, 2018 06/18

by J. D. Osborn; for the PHENIX Collaboration

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Direct photons, being colorless objects, provide an unmodified control particle that can be used in conjunction with jets to probe the quark-gluon plasma. To leading order the direct photon momentum balances the momentum of opposing jets and can therefore provide a clean handle on the jet energy. Therefore, angular correlations with direct photons provide a mechanism to study the fragmentation of the opposing jet without performing jet reconstruction. Jet fragmentation modification has been...
Topics: Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1704.04457

Arxiv.org

2 2.0

Recent results of gluon and sea quark polarization measurements in polarized proton-proton collisions at STAR

Jun 30, 2018 06/18

by Xuan Li

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The STAR experiment at RHIC is carrying out a comprehensive high-energy spin physics program to understand the internal structure and dynamics of the proton in polarized proton-proton collisions at $\sqrt{s} = 200$ GeV and $\sqrt{s} = 500/510$ GeV. STAR has the capability, with nearly full azimuthal coverage, to reconstruct leptons, hadrons and jets in the mid-rapidity region ($|\eta|
Topics: Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1406.7774

Arxiv.org

2 2.0

$Azimuthal anisotropy of D meson production in Pb-Pb collisions at $\sqrt{s_{\rm NN}} = 2.76$ TeV$

Azimuthal anisotropy of D meson production in Pb-Pb collisions at $\sqrt{s_{\rm NN}} = 2.76$ TeV

Jun 30, 2018 06/18

by ALICE Collaboration

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The production of the prompt charmed mesons $D^0$, $D^+$ and $D^{*+}$ relative to the reaction plane was measured in Pb-Pb collisions at a centre-of-mass energy per nucleon-nucleon collision of $\sqrt{s_{\rm NN}} = 2.76$ TeV with the ALICE detector at the LHC. D mesons were reconstructed via their hadronic decays at central rapidity in the transverse momentum ($p_{\rm T}$) interval of 2-16 GeV/$c$. The azimuthal anisotropy is quantified in terms of the second coefficient $v_2$ in a Fourier...
Topics: Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1405.2001

Arxiv.org

3 3.0

$Multiplicity dependence of jet-like two-particle correlations in p-Pb collisions at $\sqrt{s_{NN}}$ = 5.02 TeV$

Multiplicity dependence of jet-like two-particle correlations in p-Pb collisions at $\sqrt{s_{NN}}$ = 5.02 TeV

Jun 30, 2018 06/18

by ALICE Collaboration

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Two-particle angular correlations between unidentified charged trigger and associated particles are measured by the ALICE detector in p-Pb collisions at a nucleon-nucleon centre-of-mass energy of 5.02 TeV. The transverse-momentum range 0.7 $ < p_{\rm{T}, assoc} < p_{\rm{T}, trig}
Topics: Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1406.5463

Arxiv.org

2 2.0

Quarkonia production in proton-lead collisions at LHCb

Jun 30, 2018 06/18

by Yiming Li

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The production of $J/\psi$ and $\Upsilon$ mesons decaying into dimuon final state is studied at the LHCb experiment, with rapidity in the range of (1.5, 4.0) or (-5.0, -2.5) in proton-lead collisions at a nucleon-nucleon centre-of-mass energy $\sqrt{s_{NN}}$ = 5 TeV, based on a data sample corresponding to an integrated luminosity of 1.6 /fb. The nuclear modification factor and forward-backward production ratio are determined for prompt $J/\psi$, $J/\psi$ from b-hadron decay and $\Upsilon(1S)$...
Topics: Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1409.3967

Arxiv.org

2 2.0

Search for Muonic Atoms at RHIC

Jun 30, 2018 06/18

by Kefeng Xin

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We present the search results for muonic atoms on $\sqrt{s_{NN}}=200$ GeV Au+Au collisions collected by the STAR experiment at RHIC. With the muon identification at low momentum, the invariant mass spectra were reconstructed. Clear signals are observed at the expected atom masses. Two particle correlations show that the production of the daughter particles happens at the same space-time point, presenting the signature of atom ionization. The fraction of primordial muons is extracted from...
Topics: Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1410.8037

Arxiv.org

2 2.0

Study of Z production in PbPb and pp collisions at sqrt(s[NN]) = 2.76 TeV in the dimuon and dielectron decay channels

Jun 30, 2018 06/18

by CMS Collaboration

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The production of Z bosons is studied in the dimuon and dielectron decay channels in PbPb and pp collisions at sqrt(s[NN]) = 2.76 TeV, using data collected by the CMS experiment at the LHC. The PbPb data sample corresponds to an integrated luminosity of about 150 inverse microbarns, while the pp data sample collected in 2013 at the same nucleon-nucleon centre-of-mass energy has an integrated luminosity of 5.4 inverse picobarns. The Z boson yield is measured as a function of rapidity, transverse...
Topics: Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1410.4825

Arxiv.org

2 2.0

Probing Sea Quark and Gluon Polarization at STAR

Jun 30, 2018 06/18

by Justin R. Stevens

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One of the primary goals of the spin program at the Relativistic Heavy Ion Collider (RHIC) is to determine the polarization of the sea quarks and gluons in the proton. The polarization of the sea quarks is probed through the production of $W^{-(+)}$ bosons via the annihilation of $\bar{u}+d\,(\bar{d}+u)$, at leading order. In this proceedings we report measurements of the single-spin asymmetry, $A_{L}$, for $W$ boson production at $\sqrt{s} = 510$ GeV, and the new constraints these results...
Topics: Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1407.0404

Arxiv.org

3 3.0

$Heavy-flavour production and nuclear modification factor in Pb-Pb collisions at $\sqrt{s_{\rm NN}}$=2.76 TeV with ALICE$

Heavy-flavour production and nuclear modification factor in Pb-Pb collisions at $\sqrt{s_{\rm NN}}$=2.76 TeV with ALICE

Jun 30, 2018 06/18

by Andrea Festanti for the ALICE Collaboration

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The measurement of heavy-flavour production and nuclear modification factor in heavy-ion collisions provides insights into the mechanisms of parton energy loss in the hot and dense medium formed in these collisions. ALICE results on heavy-flavour decay electrons and muons and on D mesons are presented.
Topics: Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1407.6541

Arxiv.org

16 16

$Measurement of charged jet production cross sections and nuclear modification in p-Pb collisions at $\sqrt{s_\rm{NN}} = 5.02$ TeV$

Measurement of charged jet production cross sections and nuclear modification in p-Pb collisions at $\sqrt{s_\rm{NN}} = 5.02$ TeV

Jun 27, 2018 06/18

by ALICE Collaboration

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Charged jet production cross sections in p-Pb collisions at $\sqrt{s_{\rm NN}} = 5.02$ TeV measured with the ALICE detector at the LHC are presented. Using the anti-$k_{\rm T}$ algorithm, jets have been reconstructed in the central rapidity region from charged particles with resolution parameters $R = 0.2$ and $R = 0.4$. The reconstructed jets have been corrected for detector effects and the underlying event background. To calculate the nuclear modification factor, $R_{\rm pPb}$, of charged...
Topics: High Energy Physics - Experiment, Nuclear Experiment
Source: http://arxiv.org/abs/1503.00681

Arxiv.org

23 23

$$Z$ boson production in $p+$Pb collisions at $\sqrt{s_{NN}}=5.02$ TeV measured with the ATLAS detector$

$Z$ boson production in $p+$Pb collisions at $\sqrt{s_{NN}}=5.02$ TeV measured with the ATLAS detector

Jun 28, 2018 06/18

by ATLAS Collaboration

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The ATLAS Collaboration has measured the inclusive production of $Z$ bosons via their decays into electron and muon pairs in $p+$Pb collisions at $\sqrt{s_{NN}}=5.02$ TeV at the Large Hadron Collider. The measurements are made using data corresponding to integrated luminosities of 29.4 nb$^{-1}$ and 28.1 nb$^{-1}$ for $Z \rightarrow ee$ and $Z \rightarrow \mu\mu$, respectively. The results from the two channels are consistent and combined to obtain a cross section times the $Z \rightarrow...
Topics: Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1507.06232

Arxiv.org

11 11

Single and double spin asymmetries for deeply virtual Compton scattering measured with CLAS and a longitudinally polarized proton target

Jun 26, 2018 06/18

by S. Pisano; A. Biselli; S. Niccolai; E. Seder; M. Guidal; M. Mirazita; the CLAS Collaboration

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Single-beam, single-target, and double-spin asymmetries for hard exclusive photon production on the proton $\vec{e}\vec{p} \to e' p'\gamma$ are presented. The data were taken at Jefferson Lab using the CLAS detector and a longitudinally polarized ${}^{14}$NH$_3$ target. The three asymmetries were measured in 165 4-dimensional kinematic bins, covering the widest kinematic range ever explored simultaneously for beam and target-polarization observables in the valence quark region. The kinematic...
Topics: High Energy Physics - Experiment, Nuclear Experiment
Source: http://arxiv.org/abs/1501.07052

Arxiv.org

9 9.0

$Study of $\psi(2S)$ production and cold nuclear matter effects in pPb collisions at $\sqrt{s_{NN}}=5~\mathrm{TeV}$$

Study of $\psi(2S)$ production and cold nuclear matter effects in pPb collisions at $\sqrt{s_{NN}}=5~\mathrm{TeV}$

Jun 29, 2018 06/18

by LHCb collaboration; R. Aaij; C. Abellán Beteta; B. Adeva; M. Adinolfi; A. Affolder; Z. Ajaltouni; S. Akar; J. Albrecht; F. Alessio; M. Alexander; R. Cardinale; A. Cardini; P. Carniti; L. Carson; K. Carvalho Akiba; G. Casse; L. Cassina; L. Castillo Garcia; M. Cattaneo; Ch. Cauet; S. Ali; G. Cavallero; R. Cenci; M. Charles; Ph. Charpentier; M. Chefdeville; S. Chen; S. -F. Cheung; N. Chiapolini; M. Chrzaszcz; X. Cid Vidal; G. Alkhazov; G. Ciezarek; P. E. L. Clarke; M. Clemencic; H. V. Cliff; J....

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The production of $\psi(2S)$ mesons is studied in dimuon final states using proton-lead collision data collected by the LHCb detector. The data sample corresponds to an integrated luminosity of $1.6~\mathrm{nb}^{-1}$. The nucleon-nucleon centre-of-mass energy of the proton-lead collisions is $\sqrt{s_{NN}}=5~\mathrm{TeV}$. The measurement is performed using $\psi(2S)$ mesons with transverse momentum less than $14~\mathrm{GeV}/c$ and rapidity $y$ in the ranges $1.5
Topics: Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1601.07878

Arxiv.org

19 19

The E00-110 experiment in Jefferson Lab's Hall A: Deeply Virtual Compton Scattering off the Proton at 6 GeV

Jun 27, 2018 06/18

by M. Defurne; M. Amaryan; K. A. Aniol; M. Beaumel; H. Benaoum; P. Bertin; M. Brossard; A. Camsonne; J. -P. Chen; E. Chudakov; B. Craver; F. Cusanno; C. W. de Jager; A. Deur; R. Feuerbach; C. Ferdi; J. -M. Fieschi; S. Frullani; E. Fuchey; M. Garcon; F. Garibaldi; O. Gayou; G. Gavalian; R. Gilman; J. Gomez; P. Gueye; P. A. M. Guichon; B. Guillon; O. Hansen; D. Hayes; D. Higinbotham; T. Holmstrom; C. E. Hyde; H. Ibrahim; R. Igarashi; X. Jiang; H. S. Jo; L. J. Kaufman; A. Kelleher; C. Keppel; A....

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We present final results on the photon electroproduction ($\vec{e}p\rightarrow ep\gamma$) cross section in the deeply virtual Compton scattering (DVCS) regime and the valence quark region from Jefferson Lab experiment E00-110. Results from an analysis of a subset of these data were published before, but the analysis has been improved which is described here at length, together with details on the experimental setup. Furthermore, additional data have been analyzed resulting in photon...
Topics: High Energy Physics - Experiment, Nuclear Experiment
Source: http://arxiv.org/abs/1504.05453

Arxiv.org

17 17

$Spin alignment and violation of the OZI rule in exclusive $\omega$ and $\phi$ production in pp collisions$

Spin alignment and violation of the OZI rule in exclusive $\omega$ and $\phi$ production in pp collisions

Jun 30, 2018 06/18

by C. Adolph; R. Akhunzyanov; M. G. Alexeev; G. D. Alexeev; A. Amoroso; V. Andrieux; V. Anosov; A. Austregesilo; B. Badelek; F. Balestra; J. Barth; K. Kondo; K. Koenigsmann; I. Konorov; V. F. Konstantinov; A. M. Kotzinian; O. Kouznetsov; M. Kraemer; Z. V. Kroumchtein; N. Kuchinski; F. Kunne; G. Baum; K. Kurek; R. P. Kurjata; A. A. Lednev; A. Lehmann; M. Levillain; S. Levorato; J. Lichtenstadt; A. Maggiora; A. Magnon; N. Makke; R. Beck; G. K. Mallot; C. Marchand; A. Martin; J. Marzec; J. Matousek;...

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Exclusive production of the isoscalar vector mesons $\omega$ and $\phi$ is measured with a 190 GeV$/c$ proton beam impinging on a liquid hydrogen target. Cross section ratios are determined in three intervals of the Feynman variable $x_{F}$ of the fast proton. A significant violation of the OZI rule is found, confirming earlier findings. Its kinematic dependence on $x_{F}$ and on the invariant mass $M_{p\mathrm{V}}$ of the system formed by fast proton $p_\mathrm{fast}$ and vector meson $V$ is...
Topics: Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1405.6376

Arxiv.org

9 9.0

$Event-by-event mean $p_{\rm T}$ fluctuations in pp and Pb-Pb collisions at the LHC$

Event-by-event mean $p_{\rm T}$ fluctuations in pp and Pb-Pb collisions at the LHC

Jun 30, 2018 06/18

by ALICE Collaboration

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Event-by-event fluctuations of the mean transverse momentum of charged particles produced in pp collisions at $\sqrt{s}$ = 0.9, 2.76 and 7 TeV, and Pb-Pb collisions at $\sqrt{s_{NN}}$ = 2.76 TeV are studied as a function of the charged-particle multiplicity using the ALICE detector at the LHC. Dynamical fluctuations indicative of correlated particle emission are observed in all systems. The results in pp collisions show little dependence on collision energy. The Monte Carlo event generators...
Topics: Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1407.5530

Arxiv.org

14 14

Toward the Limits of Matter: Ultra-relativistic nuclear collisions at CERN

Jun 27, 2018 06/18

by Jurgen Schukraft; Reinhard Stock

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Strongly interacting matter as described by the thermodynamics of QCD undergoes a phase transition, from a low temperature hadronic medium to a high temperature quark-gluon plasma state. In the early universe this transition occurred during the early microsecond era. It can be investigated in the laboratory, in collisions of nuclei at relativistic energy, which create "fireballs" of sufficient energy density to cross the QCD Phase boundary. We describe 3 decades of work at CERN,...
Topics: Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1505.06853

Arxiv.org

6 6.0

Measurement of long-range near-side two-particle angular correlations in pp collisions at sqrt(s) = 13 TeV

Jun 28, 2018 06/18

by CMS Collaboration

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Results on two-particle angular correlations for charged particles produced in pp collisions at a center-of-mass energy of 13 TeV are presented. The data were taken with the CMS detector at the LHC and correspond to an integrated luminosity of about 270 inverse nanobarns. The correlations are studied over a broad range of pseudorapidity (abs(eta) < 2.4) and over the full azimuth (phi) as a function of charged particle multiplicity and transverse momentum (pt). In high-multiplicity events, a...
Topics: High Energy Physics - Experiment, Nuclear Experiment
Source: http://arxiv.org/abs/1510.03068

Arxiv.org

4 4.0

Measurements of heavy-flavour production in p-Pb collisions with ALICE

Jun 28, 2018 06/18

by Jeremy Wilkinson; for the ALICE Collaboration

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The production of open heavy-flavour particles was studied in p-Pb collisions at $\sqrt{s_\mathrm{NN}}=5.02$ TeV using the ALICE detector. Three separate observables were used: the hadronic decays of D mesons at mid-rapidity, and semileptonic decays of heavy-flavour hadrons to electrons and muons at mid-rapidity and forward rapidity, respectively. The most recent ALICE measurements of the nuclear modification factor, $R_\mathrm{pPb}$, of open charm and beauty are reported, along with the...
Topics: High Energy Physics - Experiment, Nuclear Experiment
Source: http://arxiv.org/abs/1512.02892

Arxiv.org

3 3.0

Evidence for light-by-light scattering in heavy-ion collisions with the ATLAS detector at the LHC

Jun 30, 2018 06/18

by ATLAS Collaboration

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Light-by-light scattering ($\gamma\gamma\rightarrow\gamma\gamma$) is a quantum-mechanical process that is forbidden in the classical theory of electrodynamics. This reaction is accessible at the Large Hadron Collider thanks to the large electromagnetic field strengths generated by ultra-relativistic colliding lead (Pb) ions. Using 480 $\mu$b$^{-1}$ of Pb+Pb collision data recorded at a centre-of-mass energy per nucleon pair of 5.02 TeV by the ATLAS detector, the ATLAS Collaboration reports...
Topics: High Energy Physics - Experiment, Nuclear Experiment
Source: http://arxiv.org/abs/1702.01625

Arxiv.org

14 14

$Measurement of D$_s^+$ production and nuclear modification factor in Pb-Pb collisions at $\sqrt{s_{\rm NN}}=2.76$ TeV$

Measurement of D$_s^+$ production and nuclear modification factor 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 production of prompt D$_s^+$ mesons was measured for the first time in collisions of heavy nuclei with the ALICE detector at the LHC. The analysis was performed on a data sample of Pb-Pb collisions at a centre-of-mass energy per nucleon pair, $\sqrt{s_{\rm NN}}$, of 2.76 TeV in two different centrality classes, namely 0-10% and 20-50%. D$_s^+$ mesons and their antiparticles were reconstructed at mid-rapidity from their hadronic decay channel D$_s^+\rightarrow\phi\pi^+$, with...
Topics: Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1509.07287

Arxiv.org

31 31

$Search for weakly decaying $\bar{\Lambda\mathrm{n}}$ and $\Lambda\Lambda $ exotic bound states in central Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 2.76 TeV$

Search for weakly decaying $\bar{\Lambda\mathrm{n}}$ and $\Lambda\Lambda $ exotic bound states in central Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 2.76 TeV

Jun 28, 2018 06/18

by ALICE Collaboration

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We present results of a search for two hypothetical strange dibaryon states, i.e. the H-dibaryon and the possible $\bar{\Lambda\mathrm{n}}$ bound state. The search is performed with the ALICE detector in central (0-10%) Pb-Pb collisions at $ \sqrt{s_{\rm{NN}}} = 2.76$ TeV, by invariant mass analysis in the decay modes $\bar{\Lambda\mathrm{n}} \rightarrow \bar{\mathrm{d}} \pi^{+} $ and H-dibaryon $\rightarrow \Lambda \mathrm{p} \pi^{-}$. No evidence for these bound states is observed. Upper...
Topics: Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1506.07499

Arxiv.org

4 4.0

Overview of ALICE Results at Quark Matter 2014

Jun 30, 2018 06/18

by Jan Fiete Grosse-Oetringhaus

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The results released by the ALICE collaboration at Quark Matter 2014 address topics from identified-particle jet fragmentation functions in pp collisions, to the search for collective signatures in p-Pb collisions to precision measurements of jet quenching with D mesons in Pb-Pb collisions. This paper gives an overview of the contributions (31 parallel talks, 2 flash talks and 80 posters) by the ALICE collaboration at Quark Matter 2014.
Topics: Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1408.0414

Arxiv.org

12 12

Measurements of charged particle spectra and nuclear modification factor in p+Pb collisions with the ATLAS detector

Jun 28, 2018 06/18

by Petr Balek

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The ATLAS detector at the LHC obtained the sample of p+Pb data at $\sqrt{s_{NN}}={}$5.02TeV with integrated luminosity of 25nb${}^{-1}$, which can be compared to the pp data obtained by interpolating pp measurements at $\sqrt{s}={}$2.76TeV and 7TeV. Due to the excellent capabilities of the ATLAS detector, and its stable operation in heavy ion as well as proton-proton physics runs, the data allow measurements of the nuclear modification factor, ratio of heavy ion charged particle spectra divided...
Topics: Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1509.01304

Arxiv.org

32 32

$Transverse momentum dependence of D-meson production in Pb-Pb collisions at $\sqrt{s_{\rm NN}}=2.76$ TeV$

Transverse momentum dependence of D-meson production 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 production of prompt charmed mesons D$^0$, D$^+$ and D$^{*+}$, and their antiparticles, was measured with the ALICE detector in Pb-Pb collisions at the centre-of-mass energy per nucleon pair, $\sqrt{s_{\rm NN}}$, of 2.76 TeV. The production yields for rapidity $|y|
Topics: Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1509.06888

Arxiv.org

7 7.0

Mid-rapidity D-meson production in pp, Pb-Pb and p-Pb collisions at the LHC

Jun 30, 2018 06/18

by Jeremy Wilkinson; for the ALICE Collaboration

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We present the recent results for D-meson production measured by the ALICE collaboration in pp collisions at $\sqrt{s}=7$ TeV, Pb-Pb collisions at $\sqrt{s_\mathrm{NN}}=2.76$ TeV and p-Pb collisions at $\sqrt{s_\mathrm{NN}}=5.02$ TeV.
Topics: Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1402.3124

Arxiv.org

20 20

Measurement of pi^0 photoproduction on the proton at MAMI C

Jun 28, 2018 06/18

by P. Adlarson; F. Afzal; C. S. Akondi; J. R. M. Annand; H. J. Arends; Ya. I. Azimov; R. Beck; N. Borisov; A. Braghieri; W. J. Briscoe; S. Cherepnya; F. Cividini; C. Collicott; S. Costanza; A. Denig; E. J. Downie; M. Dieterle; M. I. Ferretti Bondy; L. V. Fil'kov; A. Fix; S. Gardner; S. Garni; D. I. Glazier; D. Glowa; W. Gradl; G. Gurevich; D. J. Hamilton; D. Hornidge; G. M. Huber; A. Käser; V. L. Kashevarov; S. Kay; I. Keshelashvili; R. Kondratiev; M. Korolija; B. Krusche; V. V. Kulikov; A....

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Differential cross sections for the gamma p -> pi^0 p reaction have been measured with the A2 tagged-photon facilities at the Mainz Microtron, MAMI C, up to the center-of-mass energy W=1.9 GeV. The new results, obtained with a fine energy and angular binning, increase the existing quantity of pi^0 photoproduction data by ~47%. Owing to the unprecedented statistical accuracy and the full angular coverage, the results are sensitive to high partial-wave amplitudes. This is demonstrated by the...
Topics: Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1506.08849

Arxiv.org

4 4.0

$W and Z boson production in p-Pb collisions at $\sqrt{s_{\rm NN}}$ = 5.02 TeV$

W and Z boson production in p-Pb collisions at $\sqrt{s_{\rm NN}}$ = 5.02 TeV

Jun 29, 2018 06/18

by Alice Collaboration

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The W and Z boson production was measured via the muonic decay channel in proton-lead collisions at $\sqrt{s_{\rm NN}} = 5.02$ TeV at the Large Hadron Collider with the ALICE detector. The measurement covers backward ($-4.46 < y_{\rm cms} < -2.96$) and forward ($2.03 < y_{\rm cms} < 3.53$) rapidity regions, corresponding to Pb-going and p-going directions, respectively. The Z-boson production cross section, with dimuon invariant mass of $6010$ GeV/$c$ are determined. The results are...
Topics: Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1611.03002

Arxiv.org

8 8.0

Measurement of D-meson production in Pb-Pb collisions at the LHC with ALICE

Jun 28, 2018 06/18

by Andrea Festanti; for the ALICE Collaboration

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The measurement of D-meson production in heavy-ion collisions at LHC energy provides insights into the mechanisms of interaction of charm quarks in the hot and dense medium formed in these collisions. ALICE results on the D-meson nuclear modification factor and azimuthal anisotropy in Pb-Pb collisions at $\sqrt{s_{\rm NN}}=2.76$ TeV are presented.
Topics: High Energy Physics - Experiment, Nuclear Experiment
Source: http://arxiv.org/abs/1510.00825

Arxiv.org

7 7.0

Photon-hadron and photon-photon collisions in ALICE

Jun 28, 2018 06/18

by R. Schicker

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A review is given on photon-hadron and photon-photon collisions in the ALICE experiment. The physics motivation for studying such reactions is outlined, and the results obtained in proton-lead and lead-lead collisions in Run 1 of the LHC are discussed. The improvement in detector rapidity coverage due to a newly added detector system is presented. The ALICE perspectives for data taking in LHC Run II are summarised.
Topics: High Energy Physics - Experiment, Nuclear Experiment
Source: http://arxiv.org/abs/1510.07975

Arxiv.org

4 4.0

Event-by-event multiplicity fluctuations in Pb-Pb collisions in ALICE

Jun 29, 2018 06/18

by Maitreyee Mukherjee

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Fluctuations of various observables in heavy-ion collisions at ultra-relativistic energies have been extensively studied as they provide important signals regarding the formation of a Quark-Gluon Plasma (QGP). Because of the large number of produced particles in each event, a detailed study of event-by-event multiplicity fluctuations has been proposed as one of the signatures of the phase transition. In addition, the understanding of multiplicity fluctuations is essential for other...
Topics: Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1603.06824

Arxiv.org

13 13

$Measurement of electrons from heavy-flavour hadron decays in p-Pb collisions at $\sqrt{s_{\rm NN}} = 5.02$ TeV$

Measurement of electrons from heavy-flavour hadron decays in p-Pb collisions at $\sqrt{s_{\rm NN}} = 5.02$ TeV

Jun 28, 2018 06/18

by ALICE Collaboration

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The production of electrons from heavy-flavour hadron decays was measured as a function of transverse momentum ($p_{\rm T}$) in minimum-bias p-Pb collisions at $\sqrt{s_{\rm NN}}=5.02$ TeV with ALICE at the LHC. The measurement covers the $p_{\rm T}$ interval $0.5
Topics: Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1509.07491

Arxiv.org

3 3.0

$J/$\psi$ and $\psi(2S)$ measurement in p+p collisions at $\sqrt{s} =$ 200 and 500 GeV with the STAR experiment$

J/$\psi$ and $\psi(2S)$ measurement in p+p collisions at $\sqrt{s} =$ 200 and 500 GeV with the STAR experiment

Jun 28, 2018 06/18

by Barbara Trzeciak

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In this paper, results on the J/psi cross section and polarization measured via the dielectron decay channel at mid-rapidity in p+p collisions at 200 and 500 GeV in the STAR experiment are discussed. Also, first measurements of the J/psi production as a function of the charged-particle multiplicity density and of psi(2S) to J/psi ratio at 500 GeV are reported.
Topics: High Energy Physics - Experiment, Nuclear Experiment
Source: http://arxiv.org/abs/1512.07398

Arxiv.org

7 7.0

$Exclusive $\omega$ meson muoproduction on transversely polarised protons$

Exclusive $\omega$ meson muoproduction on transversely polarised protons

Jun 29, 2018 06/18

by C. Adolph; J. Agarwala; M. Aghasyan; R. Akhunzyanov; M. G. Alexeev; G. D. Alexeev; A. Amoroso; V. Andrieux; N. V. Anfimov; V. Anosov; W. Augustyniak; J. H. Koivuniemi; V. N. Kolosov; K. Kondo; K. Koenigsmann; I. Konorov; V. F. Konstantinov; A. M. Kotzinian; O. M. Kouznetsov; M. Kraemer; P. Kremser; A. Austregesilo; F. Krinner; Z. V. Kroumchtein; Y. Kulinich; F. Kunne; K. Kurek; R. P. Kurjata; A. A. Lednev; A. Lehmann; M. Levillain; S. Levorato; C. D. R. Azevedo; Y. -S. Lian; J. Lichtenstadt; R....

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Exclusive production of $\omega$ mesons was studied at the COMPASS experiment by scattering $160~\mathrm{GeV}/\mathit{c}$ muons off transversely polarised protons. Five single-spin and three double-spin azimuthal asymmetries were measured in the range of photon virtuality $1~(\mathrm{GeV}/\mathit{c})^2 < Q^2 < 10~(\mathrm{GeV}/\mathit{c})^2$, Bjorken scaling variable $0.003 < x_{\mathit{Bj}} < 0.3$ and transverse momentum squared of the $\omega$ meson...
Topics: Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1606.03725

Arxiv.org

14 14

$Nonperturbative-transverse-momentum effects and evolution in dihadron and direct photon-hadron angular correlations in $p$$+$$p$ collisions at $\sqrt{s}$=510 GeV$

Nonperturbative-transverse-momentum effects and evolution in dihadron and direct photon-hadron angular correlations in $p$$+$$p$ collisions at $\sqrt{s}$=510 GeV

Jun 29, 2018 06/18

by A. Adare; C. Aidala; N. N. Ajitanand; Y. Akiba; R. Akimoto; J. Alexander; M. Alfred; V. Andrieux; K. Aoki; N. Apadula; Y. Aramaki; Y. Fukao; Y. Fukuda; T. Fusayasu; K. Gainey; C. Gal; P. Gallus; P. Garg; A. Garishvili; I. Garishvili; H. Ge; H. Asano; F. Giordano; A. Glenn; X. Gong; M. Gonin; Y. Goto; R. Granier de Cassagnac; N. Grau; S. V. Greene; M. Grosse Perdekamp; Y. Gu; E. T. Atomssa; T. Gunji; H. Guragain; T. Hachiya; J. S. Haggerty; K. I. Hahn; H. Hamagaki; H. F. Hamilton; S. Y. Han; J....

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Dihadron and isolated direct photon-hadron angular correlations are measured in $p$$+$$p$ collisions at $\sqrt{s}=510$ GeV. Correlations of charged hadrons of $0.7
Topics: Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1609.04769

Arxiv.org

4 4.0

Beam-Energy and Centrality Dependence of Directed Flow of Identified Particles

Jun 28, 2018 06/18

by Prashanth Shanmuganathan

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These proceedings present directed flow ($v_1$) measurements in Au+Au collisions from STAR's Beam Energy Scan (BES) program at the Relativistic Heavy-Ion Collider, for $p$, $\bar{p}$, $\Lambda$, $\bar\Lambda$, $K^\pm$, $K^0_S$ and $\pi^\pm$. At intermediate centrality, protons show a minimum in directed flow slope, $dv_1/dy\,|_{y\leq0.8}$, as a function of beam energy. Proton $dv_1/dy$ changes sign near 10 GeV, and the directed flow for $\Lambda$ is consistent with the proton result. The...
Topics: High Energy Physics - Experiment, Nuclear Experiment
Source: http://arxiv.org/abs/1512.09009

Arxiv.org

14 14

$Measurement of the production of neighbouring jets in lead-lead collisions at $\sqrt{s_{\mathrm{NN}}} = 2.76$ TeV with the ATLAS detector$

Measurement of the production of neighbouring jets in lead-lead collisions at $\sqrt{s_{\mathrm{NN}}} = 2.76$ TeV with the ATLAS detector

Jun 28, 2018 06/18

by ATLAS Collaboration

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This Letter presents measurements of correlated production of nearby jets in Pb+Pb collisions at $\sqrt{s_{\mathrm{NN}}} = 2.76$ TeV using the ATLAS detector at the Large Hadron Collider. The measurement was performed using 0.14 ${\rm nb}^{-1}$ of data recorded in 2011. The production of correlated jet pairs was quantified using the rate, $R_{\Delta R}$, of "neighbouring" jets that accompany "test" jets within a given range of angular distance, $\Delta R$, in the...
Topics: Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1506.08656

Arxiv.org

14 14

Bottomonium production in heavy-ion collisions at STAR

Jun 28, 2018 06/18

by Robert Vertesi; for the STAR Collaboration

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Bottomonium measurements provide unique insight into hot and cold nuclear matter effects present in the medium that is formed in high-energy heavy-ion collisions. Recent STAR results show that in $\sqrt{s_{NN}}$ = 200 GeV central Au+Au collisions the $\Upsilon$(1S) state is suppressed more than if only cold nuclear matter effects were present, and the excited state yields are consistent with a complete suppression. In 2012, STAR also collected 263.4 $\mu$b$^{-1}$ high-energy-electron triggered...
Topics: Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1509.05359

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