& Λ Production in ALICE
|
|
- Coral Bryant
- 6 years ago
- Views:
Transcription
1 Journal of Physics: Conference eries OPEN ACCE Related content K & Λ Production in ALICE - trangeness production in ALICE Domenico Elia and the ALICE Collaboration o cite this article: Luke Hanratty and the Alice Collaboration 4 J. Phys.: Conf. er View the article online for updates and enhancements. - ALICE detector upgrades homas Peitzmann and the ALICE Collaboration - trange and Multi-trange Particle Production in ALICE D D Chinellato and the Alice Collaboration his content was downloaded from IP address on 4//7 at 5:
2 4th International Conference on trangeness in Quark Matter (QM3) Journal of Physics: Conference eries 59 (4) 9 doi:.88/ /59//9 K & Λ Production in ALICE Luke Hanratty for the ALICE Collaboration chool of Physics and Astronomy, he University of Birmingham, Edgbaston, Birmingham, B5, United Kingdom hanratty@cern.ch Abstract. he production of Λ and K hadrons at the LHC can be measured through the reconstruction of their weak decay topologies via decay channels with only charged particles in the final state. he tracking and particle identification capabilities of the ALICE detector allow us to measure the spectra of these particles over a wide transverse momentum range (.4 < p < GeV/c), and to precisely determine the behaviour of the baryon-to-meson ratio. ransverse momentum spectra and production yields at mid-rapidity ( y <.5) for Λ and K are presented for s NN =.76 ev Pb Pb collisions as a function of centrality. he evolution of the ratio is discussed, in comparison with corresponding results in pp collisions at the LHC and in s NN = GeV Au Au collisions at RHIC. Comparisons to theoretical models will also be outlined.. Introduction Relativistic collisions of heavy ions can be used to study the behaviour of strongly-interacting matter as it undergoes a phase transition from a quark-gluon plasma to a hadronic phase. By studying the transverse momentum (p ) of hadrons emitted from the collisions, information about the production mechanisms of these hadrons can be inferred. It was observed at the uper Proton ynchotron (P) [] and at the Relativistic Heavy Ion Collider (RHIC) [, 3] that ratios of p spectra for baryons and mesons, such as p/π and are enhanced at intermediate p, when compared to the corresponding ratios in pp collisions. At low p, the hydrodynamical flow of the medium could contribute to this effect, as the heavier baryons are pushed to higher momentum than the lighter mesons. However, such models are typically only applicable to p GeV/c, while the enhancement is still evident at 4 GeV/c. Another potentially contributing effect is coalescence, in which multiple soft quarks from the medium combine to form hadrons. he momentum of a baryon will then be given by the sum of the momenta of three quarks, and thus be typically higher than mesons formed from two quarks. his mechanism could extend up to higher p values ( - GeV/c) [4] at LHC energies, if the quarks from jet fragmentation also undergo recombination [5]. Above 6 GeV/c the ratio is compatible with that measured in pp collisions, and so it is expected that vacuumlike fragmentation will dominate hadron production. A precise measurement of these ratios over a broad transverse momentum range for a wide selection of energies and centrality intervals is thus important for examining the interplay between these different mechanisms. In these proceedings, the measurement of the ratio by ALICE will be discussed. hese singly-strange particles can be identified with a single technique over a wide momentum range, which allows for a precise measurement of the ratio. Content from this work may be used under the terms of the Creative Commons Attribution 3. licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Published under licence by Ltd
3 4th International Conference on trangeness in Quark Matter (QM3) Journal of Physics: Conference eries 59 (4) 9 doi:.88/ /59//9. Analysis echnique ALICE is designed for excellent particle identification in high-multiplicity collisions. For this analysis, a two-station scintillator detector at forward rapidity (VZERO) was used for event and centrality selection, the Inner racking ystem (I) for vertex identification and particle tracking, and the ime Projection Chamber (PC) for further particle tracking and particle identification (PID) through energy loss measurements. About.5 7 events from the Pb Pb run were analysed in 7 different centrality bins spanning from -9% of the most central nuclear collisions. Λ and K were identified by the topology of their decays into pπ and π + π respectively, with branching ratios of 63.9% and 69.% [6]. Pairs of oppositely charged tracks which could emerge from a common secondary vertex were considered V candidates, as described in [7]. More stringent cuts were applied to reduce the large level of combinatorial background present in Pb Pb collisions [8]. Cuts on the distance of closest approach between the two daughter tracks and also to the primary vertex were tightened, as were cuts on the decay radius and the cosine of the pointing angle (the angle between the Vs position and momentum vectors.) In addition, the rate of energy loss in the PC for positive daughters of Λ candidates with p below. GeV/c was required to be within 3σ of that expected for a proton. A cut was further applied on the Armenteros-Podolanski diagram [9] in order to exclude Λ and Λ from being reconstructed as background to the K. /N evd Pb Pb at s NN =.76 ev, y < K /N evd Pb Pb at s NN =.76 ev, y < K /N evd 5 % 5 %, x/ %, x/4 4 %, x/8 4 6 %, x/6 6 8 %, x/3 8 9 %, x/ ALI PUB 5579 Λ /N evd 6 5 % 5 %, x.9 %, x %, x. Λ 4 6 %, x. 6 8 %, x %, x5. Blast Wave fit ALI PUB 5575 Figure. Λ and K spectra in log scale. Figure. Λ and K spectra in linear scale. An invariant mass distribution was created for Λ and K by assuming that the decay daughters for each V candidate were pπ and π + π respectively. he yield of each particle could then be extracted by subtracting the background from the revealed peak. he background was estimated by first using a Gaussian plus nd degree polynomial fit to identify the peak region, and then fitting the area to either side of the peak and extrapolating into the peak region to estimate
4 the background under the peak. he signal is then defined as the difference between the total number of counts in the peak region and the background fit in the same region. A Monte-Carlo study was used to correct these signals for efficiency and acceptance. Further, the yield of Λ was corrected to remove Λ s coming from weak decays of Ξ and Ξ, using the Ξ yields measured by ALICE []. he final spectra are shown in Figures and. 3. Results he ratio as measured by ALICE is shown in Figure 3 for different centralities [8].he figure also includes the ratio measured in pp collisions at energies which bracket the s NN =.76 ev energy of the Pb Pb collisions. It can be seen that the ratio in pp collisions does not appear to depend upon the collision energy, and also that the ratio in the most peripheral Pb Pb collisions (8-9% centrality) is consistent with that measured in pp collisions. All centralities give a comparable result for p.5 GeV/c, and for p > 7 GeV/c, while at the peak of the enhancement, the most central (-5%) ratio is approximately 3 times that measured in pp collisions. his factor of 3, as well as the p range of the enhancement, is consistent with what is observed for the p/π ratio as shown in Figure 4 []. ) 4th International Conference on trangeness in Quark Matter (QM3) Journal of Physics: Conference eries 59 (4) 9 doi:.88/ /59// ALI PUB 5567 Pb Pb at s NN =.76 ev, y <.5 5 % 4 % 4 6 % 6 8 % 8 9 % pp at s = 7 ev, y <.5 pp at s =.9 ev, y < Figure 3. ratio for different centrality selections in Pb Pb, and for pp ALI DER 5595 Pb Pb at s NN =.76 ev, y <.5 hermal model fit, =56 MeV Centrality Figure 5. p -integrated ratio. + π ( p + p )/( π ALI DER Pb Pb s NN =.76 ev 5% 4% 6 8% pp s=7 ev Figure 4. p/π ratio for different centrality selections in Pb Pb, and for pp., ALI PUB 5583 y <.5 AR: Au Au at s NN =. ev Λ /K 5% 5% Λ /K 6 8% 6 8% ALICE: Pb Pb at s NN =.76 ev 5% % heory 5% Hydro VIH+ Recombination EPO Figure 6. Comparison of ratio for central and peripheral collisions in ALICE, AR, and theoretical predictions. tudies of the p -integrated yields [8] of Λ and K suggest that a thermal model (with a temperature of 56 MeV) predicts accurately the total yields, and further that the ratio of 3
5 4th International Conference on trangeness in Quark Matter (QM3) Journal of Physics: Conference eries 59 (4) 9 doi:.88/ /59//9 integrated yields is constant within errors across all centrality intervals, as shown in Figure 5. his would suggest that the enhancement of the ratio of p spectra is due to a redistribution of particles in p, rather than the introduction of additional production channels. his picture is supported by the low p region of the ratio in Figure 3, where there is a change in the ratio with centrality consistent with a depletion of Λ with respect to K, which is strongest for the most central collisions. Figure 6 shows the measured for central (-5%) and peripheral (6-8%) centrality classes, for s NN =.76 ev Pb Pb collisions with ALICE and s NN = GeV Au Au collisions with AR []. While the antibaryon/baryon ratio approaches unity at the LHC, it is.8 at RHIC, so both and ratios have been plotted separately for AR. From this, it can be seen that the magnitude of the enhancement is very similar at both RHIC and LHC energies. he enhancement extends to slightly higher p at ALICE, but is still restricted to fairly modest p. Also shown in Figure 6 are predictions by various theoretical models for the -5% ratio. he viscous hydrodynamical model [3, 4, 5] describes the behaviour of the ratio accurately below GeV/c, but then strongly deviates from the data as the ratio begins to turn over. A recombination model is also shown [6], which describes the general behaviour of the ratio well, but overestimates the magnitude of the data by approximately 5%. Finally, a result from the EPO.7v3 model is shown [7]. his model includes the interaction between jets and the hydrodynamical medium, and appears to describe well the behaviour of the ratio over the full p range. It would be interesting to see how these and other models describe the variation of the ratio with energy and centrality. 4. Conclusions he Λ and K spectra and their ratios have been measured in s NN =.76 ev Pb Pb collisions at ALICE over a wide range of centrality and p and compared to those measured in pp collisions at s = 9 GeV and 7 ev. At high p, there is no discernible difference between the ratio in pp and Pb Pb collisions, suggesting that the relative production rates are dominated by vacuum-like fragmentation. In the intermediate p region however, Λ production is strongly enhanced in Pb Pb relative to K for central collisions, while the p -integrated ratio appears to remain constant with respect to centrality. his would indicate that particles are redistributed in p in Pb Pb as compared to pp collisions. he enhancement is similar at AR and ALICE, suggesting that any collision energy dependence is weak. References [] chuster et al. (NA49 Collaboration) 6 J. Phys. G (Preprint nucl-ex/665) [] Adler et al. (PHENIX Collaboration) 3 Phys. Rev. Lett (Preprint nucl-ex/3536) [3] Adams J et al. (AR Collaboration) 6 (Preprint nucl-ex/64) [4] Hwa R C 8 J. Phys. G (Preprint nucl-th/ ) [5] Hwa R C and Yang C 4 Phys. Rev. C (Preprint nucl-th/4) [6] Beringer J et al. (Particle Data Group) Phys. Rev. D 86() [7] Aamodt K et al. (ALICE Collaboration) Eur. Phys. J. C (Preprint hep-ex/.357) [8] Abelev B et al. (ALICE Collaboration) 3 Phys. Rev. Lett. () 3 (Preprint nucl-ex/37.553) [9] Podolanski J and Armenteros R 954 Phil. Mag [] Abelev B et al. (ALICE Collaboration) 3 (Preprint arxiv:nucl-ex/ ) [] Velasquez A O 3 Nuclear Physics A c 766c IN [] Agakishiev G et al. (AR Collaboration) Phys. Rev. Lett (Preprint nucl-ex/7.955) [3] ong H and Heinz U W 8 Phys. Lett. B (Preprint nucl-th/79.74) [4] ong H and Heinz U W 8 Phys. Rev. C (Preprint nucl-th/7.375) [5] ong H and Heinz U W 8 Phys. Rev. C (Preprint nucl-th/85.756) [6] Fries R J, Greco V and orensen P 8 Ann. Rev. Nucl. Part. ci (Preprint nucl-th/ ) [7] Werner K Phys. Rev. Lett. 9() 3 (Preprint nucl-th/4.394) 4
arxiv: v1 [hep-ex] 18 May 2015
ALICE summary of light flavour results at intermediate and high p arxiv:55.477v [hep-ex] 8 May 5 uva Richert, on behalf of the ALICE collaboration Lund University, Department of Physics, Div. of Particle
More informationNew results related to QGP-like effects in small systems with ALICE
New results related to QGP-like effects in small systems with ALICE for the ALICE collaboration Lund University E-mail: vytautas.vislavicius@cern. Results on the production of π ±, K ±, p( p), Λ( Λ), Ξ
More informationIdentified charged hadron production in pp, p Pb and Pb Pb collisions at LHC energies with ALICE
EPJ Web of Conferences 95, 04075 (2015) DOI: 10.1051/ epjconf/ 20159504075 C Owned by the authors, published by EDP Sciences, 2015 Identified charged hadron production in pp, p Pb and Pb Pb collisions
More informationMeasurement of D-meson production in p-pb collisions with the ALICE detector
Journal of Physics: Conference Series OPEN ACCESS Measurement of D-meson production in p-pb collisions with the ALICE detector Related content - he ALICE Collaboration - he ALICE Collaboration - he ALICE
More informationResults on identified particle production in pp, p-pb and Pb-Pb collisions measured with ALICE at the LHC
EPJ Web of Conferences 7, (4) DOI:.5/ epjconf/ 47 C Owned by the authors, published by EDP Sciences, 4 Results on identified particle production in pp, ppb and PbPb collisions measured with ALICE at the
More informationAzimuthal anisotropy of the identified charged hadrons in Au+Au collisions at S NN. = GeV at RHIC
Journal of Physics: Conference Series PAPER OPEN ACCESS Azimuthal anisotropy of the identified charged hadrons in Au+Au collisions at S NN = 39-200 GeV at RHIC To cite this article: S S Vdovkina 2017 J.
More informationPHENIX measurements of bottom and charm quark production
Journal of Physics: Conference Series PAPER OPEN ACCESS PHENIX measurements of bottom and charm quark production To cite this article: Timothy Rinn and PHENIX Collaboration 2018 J. Phys.: Conf. Ser. 1070
More informationOpen heavy-flavour production in pp, p Pb and Pb Pb collisions in ALICE
Open heavy-flavour production in pp, p Pb and Pb Pb collisions in ALICE (INFN, Bologna) on behalf of the ALICE Collaboration Bormio Winter Meeting 26/01/2018 Why open heavy flavour in ALICE? Heavy-flavour
More informationMeasurements of the electron-positron continuum in ALICE
EPJ Web of Conferences 6, 0000 (01) DOI:.1/ epjconf/ 0160000 C Owned by the authors, published by EDP Sciences, 01 Measurements of the electron-positron continuum in ALICE Christoph Baumann a for the ALICE
More informationarxiv: v1 [hep-ex] 14 Jan 2016
Nuclear Physics A Nuclear Physics A (28) 5 www.elsevier.com/locate/procedia arxiv:6.352v [hep-ex] 4 Jan 26 Measurements of heavy-flavour nuclear modification factor and elliptic flow in Pb Pb collisions
More informationALICE results on identified particle spectra in p-pb collisions
Workshop on proton-nucleus collisions at the LHC ALICE results on identified particle spectra in p-pb collisions for the ALICE Collaboration Museo Storico della Fisica e Centro Studi e Ricerche Enrico
More informationStrange Hadron Production from STAR Fixed-Target Program
Strange Hadron Production from STAR Fixed-Target Program (for the STAR Collaboration) Department of Engineering Physics, Tsinghua University, Beijing 84, China E-mail: musman_mughal@yahoo.com We report
More informationarxiv: v1 [nucl-ex] 7 Jan 2019
Open Heavy Flavour: Experimental summary arxiv:9.95v [nucl-ex] 7 Jan 9 Deepa homas he University of exas at Austin E-mail: deepa.thomas@cern.ch In this paper I will review a few of the latest experimental
More informationPRODUCTION OF (ANTI-)(HYPER)NUCLEI IN Pb-Pb COLLISIONS MEASURED WITH ALICE AT THE LHC
PRODUCTION OF (ANTI-)(HYPER)NUCLEI IN Pb-Pb COLLISIONS MEASURED WITH ALICE AT THE LHC Stefano Piano on behalf of ALICE Collaboration INFN sez. Trieste ALICE HYP2015: 12th Int. Conf. on Hypernuclear and
More informationInclusive spectrum of charged jets in central Au+Au collisions at s NN = 200 GeV by STAR
Inclusive spectrum of charged jets in central Au+Au collisions at s NN = 200 GeV by SAR Nuclear Physics Institute, Academy of Sciencis of Czech Republic, Na ruhlarce 39/64, 180 86 Prague, Czech Republic
More informationFlow of strange and charged particles in ppb and PbPb collisions at LHC energies
Journal of Physics: Conference Series PAPER OPEN ACCESS Flow of strange and charged particles in ppb and PbPb collisions at LHC energies o cite this article: Zhoudunming u and 26 J. Phys.: Conf. Ser. 668
More informationarxiv:nucl-ex/ v1 21 Dec 2004
φ meson production in d + Au collisions at s NN = 00 GeV arxiv:nucl-ex/041048v1 1 Dec 004 1. Introduction Dipali Pal for the PHENIX collaboration Department of Physics & Astronomy, Vanderbilt University,
More informationarxiv:nucl-ex/ v1 13 Dec 2005
The Ratio Σ /Λ at RHIC arxiv:nucl-ex/58v 3 Dec 5 G. Van Buren for the STAR Collaboration Dept. of Physics, Brookhaven National Laboratory, Upton, NY 973-5 USA E-mail: gene@bnl.gov Abstract While yields
More informationCorrelations, multiplicity distributions, and the ridge in pp and p-pb collisions
EPJ Web of Conferences, 6 (7) DOI:.5/ epjconf/76 ISMD 6 Correlations, multiplicity distributions, and the ridge in pp and p-pb collisions Alice Ohlson,a for the Collaboration Ruprecht-Karls-Universität
More informationResonance analysis in pp collisions with the ALICE detector
IL NUOVO CIMENO Vol.?, N.?? Resonance analysis in pp collisions with the ALICE detector A Pulvirenti( 1 )( 2 )( ), for the ALICE Collaboration ( 1 ) INFN, Sezione di Catania ( 2 ) Università di Catania
More informationIdentified particles in pp and Pb-Pb collisions at LHC energies with the ALICE Detector
Identified particles in pp and Pb-Pb collisions at LHC energies with the ALICE Detector Michele Floris on behalf of ALICE Collaboration CERN, Geneva, Switzerland 26/05/2011 Quark Matter 2011 Outline What
More informationPRODUCTION OF (ANTI-)HYPERNUCLEI WITH ALICE AT THE LHC
PRODUCTION OF (ANTI-)YPERNUCLEI WIT ALICE AT TE LC Stefano Piano on behalf of ALICE Collaboration INFN sez. Trieste ASTRA: Advances and open problems in low-energy nuclear and hadronic STRAngeness physics
More informationFrancesco Barile for the ALICE Collaboration. Università degli Studi di Bari & INFN
Produzione di deutoni e anti-deutoni nelle collisioni centrali Pb-Pb a snn= 2.76 TeV con il rivelatore Cherenkov HMPID nell'ambito dell'esperimento ALICE ad LHC Francesco Barile for the ALICE Collaboration
More informationCoherent photo-production of ρ 0 mesons in ultra-peripheral Pb-Pb collisions at the LHC measured by ALICE
EPJ Web of Conferences 8, 4) DOI:.5/ epjconf/ 4 8 C Owned by the authors, published by EDP Sciences, 4 Coherent photo-production of ρ mesons in ultra-peripheral Pb-Pb collisions at the LHC measured by
More informationarxiv: v1 [hep-ex] 9 Jan 2019
Quarkonium production as a function of charged-particle multiplicity in pp and p Pb collisions measured by ALICE at the LHC arxiv:1901.02627v1 [hep-ex] 9 Jan 2019 Discipline of Physics, School of Basic
More informationOverview of anisotropic flow measurements from ALICE
EPJ Web of Conferences 117, (2016) Overview of anisotropic flow measurements from ALICE You Zhou on behalf of the ALICE Collaboration Niels Bohr Institute, University of Copenhagen, Denmark Abstract Anisotropic
More informationPion, Kaon, and (Anti-) Proton Production in Au+Au Collisions at s = 62.4 GeV
Pion, Kaon, and (Anti-) Proton Production in AuAu Collisions at s = 6.4 GeV NN Ming Shao 1, for the STAR Collaboration 1 University of Science & Technology of China, Anhui 3007, China Brookhaven National
More informationarxiv: v2 [nucl-ex] 8 Sep 2016
An experimental review on elliptic flow of strange and multi-strange hadrons in relativistic heavy ion collisions Shusu Shi 1 1 Key Laboratory of Quarks and Lepton Physics (MOE) and Institute of Particle
More informationMEASUREMENT OF (ANTI-)HYPERNUCLEI PRODUCTION WITH ALICE AT THE LHC
MEASUREMENT OF (ANTI-)YPERNUCLEI PRODUCTION WIT ALICE AT TE LC Stefano Piano on behalf of ALICE Collaboration INFN sez. Trieste ALICE EXA217: International Conference on Exotic Atoms and Related Topics
More informationarxiv:nucl-th/ v2 8 Jun 2006
Acta Phys. Hung. A / (2005) 000 000 HEAVY ION PHYSICS Strange quark collectivity of φ meson at RHIC arxiv:nucl-th/0510095v2 8 Jun 2006 J. H. Chen 1,2, Y. G. Ma 1,a, G. L. Ma 1,2, H. Z. Huang 1,3, X. Z.
More informationMonte Carlo Studies of Identified Two-particle Correlations in p-p and Pb-Pb Collisions
Journal of Physics: Conference Series OPEN ACCESS Monte Carlo Studies of Identified wo-particle Correlations in p-p and Pb-Pb Collisions o cite this article: Gyula Bencédi et al J. Phys.: Conf. Ser. 89
More informationLow Momentum Direct Photons in Au+Au collisions at 39 GeV and 62.4 GeV measured by the PHENIX Experiment at RHIC
Low Momentum Direct Photons in Au+Au collisions at 39 GeV and 6.4 GeV measured by the PHENIX Experiment at RHIC Vladimir Khachatryan for the PHENIX Collaboration Department of Physics and Astronomy, Stony
More informationThe Quark-Gluon Plasma and the ALICE Experiment
The Quark-Gluon Plasma and the ALICE Experiment David Evans The University of Birmingham IoP Nuclear Physics Conference 7 th April 2009 David Evans IoP Nuclear Physics Conference 2009 1 Outline of Talk
More informationProduction of (anti)(hyper)nuclei in Pb-Pb collisions measured with ALICE at the LHC
Production of (anti)(hyper)nuclei in Pb-Pb collisions measured with ALICE at the LHC Dipartimento Di Fisica, Università di Trieste e INFN, Sezione Trieste For the ALICE collaboration Achievements and Perspectives
More informationJet Physics with ALICE
Jet Physics with ALICE Oliver Busch for the ALICE collaboration Oliver Busch Tsukuba 2014 /03/13 1 Outline introduction results from pp jets in heavy-ion collisions results from Pb-Pb collisions jets in
More informationMeasurement of light mesons at RHIC by the PHENIX experiment
Eur. Phys. J. C (2009) 61: 835 840 DOI 10.1140/epjc/s10052-009-0879-4 Regular Article - Experimental Physics Measurement of light mesons at RHIC by the PHENIX experiment M. Naglis a for the PHENIX Collaboration
More informationPoS(Baldin ISHEPP XXI)054
Resonance results with the ALICE experiment in pp and PbPb collisions at LHC energies for the ALICE collaboration Institute for heoretical and Experimental Physics, Moscow, Russia Email: Sergey.Kiselev@cern.ch
More informationarxiv:nucl-ex/ v2 18 Jun 2003
Ξ and Ξ + production in Pb+Pb collisions at 4 A GeV at CERN SPS arxiv:nucl-ex/352v2 8 Jun 23. Introduction Christine Meurer for the NA49 Collaboration E-mail: Christine.Meurer@cern.ch Gesellschaft für
More informationHeavy quark results from STAR
Eur. Phys. J. C (2009) 61: 659 664 DOI 10.1140/epjc/s10052-009-0931-4 Regular Article - Experimental Physics Heavy quark results from STAR Xin Dong a for the STAR Collaboration Lawrence Berkeley National
More informationSusanna Costanza. (Università degli Studi di Pavia & INFN Pavia) on behalf of the ALICE Collaboration
(Università degli Studi di Pavia & INFN Pavia) on behalf of the ALICE Collaboration 102 Congresso della Società Italiana di Fisica Padova, 26-30 settembre 2016 Outline Heavy flavour physics in ALICE The
More informationLight flavour hadron production in the ALICE experiment at LHC
Light flavour hadron production in the ALICE experiment at LHC Angela Badalà INFN Sezione di Catania for the ALICE Collaboration ALICE heavy-ion runs Dataset s NN (TeV) Integrated luminosity 2010 Pb-Pb
More informationarxiv: v1 [hep-ex] 9 Nov 2017
arxiv:7.3369v [hep-ex] 9 No7 ALICE Overview Alessandro Grelli (the ALICE Collaboration), Utrecht University, Princetonplein, 3584CC, he Netherlands Introduction Abstract. An overview of the recent results
More informationMeasurement of Electrons from Beauty-Hadron Decays in p-pb Collision at snn = 5.02 TeV with ALICE at the LHC
Measurement of Electrons from Beauty-Hadron Decays in p-pb Collision at snn = 5.02 ev with ALICE at the LHC Minjung Kim, Inha University Advised by: Prof. MinJung Kweon, Prof. Jin-Hee Yoon Dec 5 th 2014,
More informationMultiplicity dependence of charged pion, kaon, and (anti)proton production at large transverse momentum in p-pb collisions at 5.
[1] Multiplicity dependence of charged pion, kaon, and (anti)proton production at large transverse momentum in p-pb collisions at 5.02 ATeV Gyula Bencedi (Wigner RCP, Hungary) on behalf of the ALICE Collaboration
More informationsnn = 200 GeV Au+Au collisions with the STAR experiment
Measurements of open charm production and flow in snn = GeV Au+Au collisions with the STAR experiment at RHIC Spyridon Margetis 1, for the STAR Collaboration 1 Department of Physics, Kent State University,
More informationMapping the Nuclear Matter Phase Diagram with STAR: Au+Al at 2.8 AGeV and Au+Au at 19.6 GeV
Mapping the Nuclear Matter Phase Diagram with STAR: Au+Al at 2.8 AGeV and Au+Au at 19.6 GeV Samantha G Brovko June 14, 2011 1 INTRODUCTION In ultra-relativistic heavy ion collisions a partonic state of
More informationCorrelations of Electrons from Heavy Flavor Decay with Hadrons in Au+Au and p+p Collisions arxiv: v1 [nucl-ex] 11 Jul 2011
Correlations of Electrons from Heavy Flavor Decay with Hadrons in and Collisions arxiv:7.v [nucl-ex] Jul Anne M. Sickles, for the PHENIX Collaboration Brookhaven National Laboratory, Upton, NY E-mail:
More informationResults with Hard Probes High p T Particle & Jet Suppression from RHIC to LHC
Results with Hard Probes High p T Particle & Jet Suppression from RHIC to LHC PHENIX! AGS! RHIC! STAR! Cover 3 decades of energy in center-of-mass s NN = 2.76 TeV 5.5 TeV (2015) CMS LHC! s NN = 5-200 GeV
More informationPoS(High-pT physics09)047
HYDJE++ simulations and reconstruction of the anisotropic flow in Pb+Pb collisions at the LHC L.V. Bravina, ab, E.E. Zabrodin ab a Universitetet i Oslo, Norway E-mail: gyulnare@student.matnat.uio.no V.L.
More informationPhoton and neutral meson production in pp and PbPb collisions at ALICE
Photon and neutral meson production in pp and PbPb collisions at ALICE Dieter Roehrich University of Bergen, Norway for the ALICE Collaboration Nuclear collisions at the LHC Photons as a probe for the
More informationPoS(DIS2017)208. Nuclear PDF studies with proton-lead measurements with the ALICE detector
Nuclear PDF studies with proton-lead measurements with the ALICE detector a,b for the ALICE Collaboration a Institute for Subatomic Physics, Department for Physics and Astronomy and EMMEφ, Faculty of Science,
More informationarxiv: v1 [nucl-ex] 17 Oct 2011
Jets and Photons in ALICE homas Dietel for the ALICE Collaboration arxiv:.64v [nucl-ex] 7 Oct 0 Westfälische-Wilhelms-Universität Münster Wilhelm-Klemm-Str 9 4849 Münster Germany Abstract. ALICE measured
More informationHeavy flavour production at RHIC and LHC
Heavy flavour production at RHIC and LHC Gian Michele Innocenti 1, 1 Massachusetts Institute of Technology Abstract. In this proceedings, I present selected experimental results on heavy-flavour production
More informationarxiv: v1 [nucl-ex] 29 Feb 2012
Measurement of the nuclear modification factor of electrons from heavy-flavour hadron decays in Pb Pb collisions at s NN =.76 ev with ALICE at the LHC arxiv:.65v [nucl-ex] 9 Feb Markus Fasel for the ALICE
More informationHeavy-flavor production in pp and Pb Pb collisions at LHC with ALICE
Heavy-flavor production in pp and Pb Pb collisions at LHC with ALICE Kai Schweda 1 on behalf of the ALICE Collaboration Physikalisches Institut der Universität Heidelberg, Philosophenweg 12, D-69120 Heidelberg,
More informationSoft physics results from the PHENIX experiment
Prog. Theor. Exp. Phys. 2015, 03A104 (15 pages) DOI: 10.1093/ptep/ptu069 PHYSICS at PHENIX, 15 years of discoveries Soft physics results from the PHENIX experiment ShinIchi Esumi, Institute of Physics,
More informationOverview of ALICE results on azimuthal correlations using neutral- and heavy-flavor triggers
Journal of Physics: Conference Series PAPER OPEN ACCESS Overview of ALICE results on azimuthal correlations using neutral- and heavy-flavor triggers o cite this article: Sona Pochybova and ALICE Collaboration
More informationNeutral meson and direct photon measurement in pp and Pb Pb collisions at midrapidity with the ALICE experiment at the LHC
Neutral meson and direct photon measurement in pp and Pb Pb collisions at midrapidity with the ALICE experiment at the LHC Lucia Leardini Physikalisches Institut Heidelberg on behalf of the ALICE Collaboration
More informationFirst Run II results from ALICE
EPJ Web of Conferences will be set by the publisher DOI: will be set by the publisher c Owned by the authors, published by EDP Sciences, 06 First Run II results from ALICE Alberica oia,,a on behalf of
More informationSub-hadronic degrees of freedom in ultrarelativistic nuclear collisions at RHIC and beyond
Sub-hadronic degrees of freedom in ultrarelativistic nuclear collisions at RHIC and beyond Lawrence Berkeley National Laboratory Berkeley, US 1 Introduction: Heavy Ion Physics Today t = 5 10 17 sec T=1
More informationSummary on high p T probes
Eur. Phys. J. C (2009) 61: 741 745 DOI 10.1140/epjc/s10052-009-0913-6 Regular Article - Experimental Physics Summary on high p T probes Saskia Mioduszewski a Cyclotron Institute, Texas A&M University,
More informationarxiv: v1 [hep-ex] 18 Jan 2016
Jet measurements in pp, p Pb and Pb Pb collisions with ALICE at the LHC arxiv:6.446v [hep-ex] 8 Jan 6 Centre for Astroparticle Physics and Space Science, Bose Institute, Kolkata, 79 (INDIA) E-mail: sprasad@cern.ch
More informationConference Report Mailing address: CMS CERN, CH-1211 GENEVA 23, Switzerland
CMS CR - he Compact Muon Solenoid Experiment Conference Report Mailing address: CMS CERN, CH- GENEVA 3, Switzerland 8/5/6 Charmonium production measured in and pp collisions by CMS arxiv:7.5v [nucl-ex]
More informationFinal source eccentricity measured by HBT interferometry with the event shape selection
Journal of Physics: Conference Series PAPER OPEN ACCESS Final source eccentricity measured by HB interferometry with the event shape o cite this article: akafumi Niida and PHENIX Collaboration J. Phys.:
More informationarxiv: v1 [nucl-ex] 14 Oct 2013
Charged Jets in Minimum Bias p-pb Collisions at snn = 5.02 TeV with ALICE arxiv:1310.3612v1 [nucl-ex] 14 Oct 2013 for the ALICE collaboration Westfälische Wilhelms-Universität Münster, Germany E-mail:
More informationarxiv: v1 [nucl-th] 23 Jan 2019
arxiv:1901.08157v1 [nucl-th] 23 Jan 2019 Cyclotron Institute and Department of Physics and Astronomy, Texas A&M University, College Station TX 77843, USA E-mail: rjfries@comp.tamu.edu Michael Kordell Cyclotron
More informationHighlights of experimental results from ALICE
Available online at www.sciencedirect.com Nuclear Physics A 97 (7) 3 5 www.elsevier.com/locate/nuclphysa Highlights of experimental results from ALICE Anthony immins for the ALICE Collaboration C Science
More informationPoS(HIGH-pTLHC)022. The VHMPID detector in the ALICE experiment at LHC. Giacomo Volpe. INFN Bari, Italy
in the ALICE experiment at LHC INFN Bari, Italy E-mail: giacomo.volpe@ba.infn.it The ALICE experiment is devoted to measure the properties of the strongly interacting matter created in heavy-ion collisions
More informationTransverse momentum spectra of identified charged hadrons with the ALICE detector in Pb-Pb collisions at the LHC
Transverse momentum spectra of identified charged hadrons with the ALICE detector in Pb-Pb collisions at the LHC for the ALICE Collaboration Museo Storico della Fisica e Centro Studi e Ricerche Enrico
More informationMultiplicity dependence of identified particle production in pp collisions with ALICE
Multiplicity dependence of identified particle production in pp collisions with ALICE (for the ALICE Collaboration) NISER, INDIA Outline Introduction Results from pp collisions at s = 7 TeV and 3 TeV Collectivity
More informationarxiv: v1 [nucl-ex] 11 Jul 2011
Bulk Properties of Pb-Pb collisions at snn = 2.76 TeV measured by ALICE arxiv:17.1973v1 [nucl-ex] 11 Jul 2011 Alberica Toia for the ALICE Collaboration CERN Div. PH, 1211 Geneva 23 E-mail: alberica.toia@cern.ch
More informationAngular correlations of identified particles in the STAR BES data
Angular correlations of identified particles in the STAR BES data, for the STAR Collaboration Warsaw University of Technology E-mail: andrew.lipiec@gmail.com The angular correlation function (CF) in this
More informationRecent highlights in the light-flavour sector from ALICE
Recent highlights in the light-flavour sector from ALICE Enrico Fragiacomo INFN - Trieste MIAMI 2016 Lago Mar Resort, Fort Lauderdale, Florida 14-19 December 2016 Ultra-Relativistic Heavy-Ion collisions
More informationarxiv: v2 [nucl-ex] 17 Sep 2014
Heavy-flavour production and multiplicity dependence in pp and p Pb collisions with ALICE. Elena Bruna arxiv:9.675v [nucl-ex] 7 Sep On behalf of the ALICE Collaboration, IF orino Via P. Giuria, 5 orino,
More informationVector meson photoproduction in ultra-peripheral p-pb collisions measured using the ALICE detector
Vector meson photoproduction in ultra-peripheral p-pb collisions measured using the ALICE detector Jaroslav Adam On behalf of the ALICE Collaboration Faculty of Nuclear Sciences and Physical Engineering
More informationCorrelations and flavors in jets in ALICE
Journal of Physics: Conference Series PAPER OPEN ACCESS Correlations and flavors in jets in o cite this article: Filip Krizek and 6 J. Phys.: Conf. Ser. 668 8 View the article online for updates and enhancements.
More informationProton-lead measurements using the ATLAS detector
Proton-lead measurements using the ATLAS detector Martin Spousta for the ATLAS Collaboration Charles University in Prague DOI: http://dx.doi.org/10.3204/desy-proc-2014-04/275 Measurements of soft and hard
More informationMultiple Parton Interactions with ALICE: from pp to p-pb
Journal of Physics: Conference Series OPEN ACCESS Multiple Parton Interactions with ALICE: from pp to p-pb o cite this article: Andreas Morsch and the Alice Collaboration 4 J. Phys.: Conf. Ser. 535 View
More informationPapers by Helen Caines
Papers by Helen Caines 1. rho0 photoproduction in ultraperipheral relativistic heavy ion collisions at snn=200 B. I. Abelev et al. Phys. Rev. C 77, 034910 (2008) 2. Centrality dependence of charged hadron
More informationFLOW STUDIES IN NUCLEUS-NUCLEUS COLLISIONS AT FAIR-GSI AVAILABLE ENERGIES
(c) 2017 Rom. Rep. Phys. (for accepted papers only) FLOW STUDIES IN NUCLEUS-NUCLEUS COLLISIONS AT FAIR-GSI AVAILABLE ENERGIES O. RISTEA 1, C. RISTEA 1,2,a, A. JIPA 1, T. PETRUSE 1, T. ESANU 3, M. CALIN
More informationCharged particle production in Pb-Pb and p-pb collisions at ALICE
Journal of Physics: Conference Series OPEN ACCESS Charged particle production in Pb-Pb and p-pb collisions at To cite this article: Chiara Oppedisano and the Collaboration J. Phys.: Conf. Ser. View the
More informationarxiv: v1 [nucl-ex] 10 Feb 2012
Cent. Eur. J. Phys. 1-5 Author version Central European Journal of Physics Highlights of the Beam Energy Scan from STAR Review Article arxiv:10.389v1 [nucl-ex] 10 Feb 01 A. Schmah for the STAR Collaboration
More informationMonte Carlo Non-Linear Flow modes studies with AMPT
Monte Carlo Non-Linear Flow modes studies with AMP Daniel Noel Supervised by: Naghmeh Mohammadi 2 July - 31 August 218 1 Introduction Heavy-ion collisions at the Large Hadron Collider (LHC) generate such
More informationQuestions for the LHC resulting from RHIC Strangeness
Questions for the LHC resulting from RHIC Strangeness Outline Intermediate p T strangeness production not jets! (Credit for work goes to Betty Abelev & Jana Bielcikova) Helen Caines Yale University ALICE
More informationarxiv: v2 [hep-ex] 9 Oct 2014
J/ψ and ψ(2s) production in p-pb collisions with ALICE at the LHC arxiv:1410.1761v2 [hep-ex] 9 Oct 2014 for the ALICE Collaboration INFN and University, Torino E-mail: leoncino@to.infn.it The ALICE collaboration
More informationCharm production at RHIC
1 Charm production at RHIC Charm 2007 Conference Cornell University, Ithaca, NY 5 August 2007 2 The Quark Gluon Plasma T c Early universe quark-gluon plasma LHC RHIC Tri-critical point? Quark deconfinement
More informationMassimo Venaruzzo for the ALICE Collaboration INFN and University of Trieste
Massimo Venaruzzo for the ALICE Collaboration INFN and University of Trieste 2 nd European Nuclear Physics Conference (EuNPC 2012) Bucharest (17-21 September 2012) Outline Resonances in pp collisions:
More informationALICE results in p Pb collisions at the LHC
on behalf of the ALICE Collaboration Subatech - Laboratoire de Physique Subatomique et des Technologies Associées, Nantes, France E-mail: stocco@subatech.inp.fr ALICE studies the properties of the strongly
More informationStudying hot QCD matter at the CERN-LHC with heavy quarks
Studying hot QC matter at the CERN-LHC with heavy quarks ERC-Research Group QGP-ALICE, Utrecht University, Princetonplein 5, 58 CS Utrecht, the Netherlands E-mail: a.mischke@uu.nl his paper discusses selected
More informationHeavy Ions at the LHC: Selected Predictions. Georg Wolschin. Institut für Theoretische Physik der Universität, Heidelberg, Germany
Heavy Ions at the LHC: Selected Predictions Georg Wolschin Institut für Theoretische Physik der Universität, Heidelberg, Germany Heavy-ion collisions at relativistic energy have been investigated for many
More informationDirect Hadronic Reconstruction of D ± Mesons at STAR
Direct Hadronic Reconstruction of D ± Mesons at STAR Nathan Joseph Department of Physics and Astronomy, Wayne State University, Detroit, MI September 2, 2009 1 Introduction: Quark-Gluon Plasma The theory
More informationSTAR Open Heavy Flavor Measurements
STAR Open Heavy Flavor Measurements Xin Dong Lawrence Berkeley National Laboratory Physics Goals Mass Dependence of DE Au+Au@200GeV, 0-5% Brownian motion CUJET drag fluctuations PRL 108 (2012) 022301 Diffusion
More informationHeavy-flavour measurements at LHC-ALICE. Shingo Sakai
Heavy-flavour measurements at LHC-ALICE Shingo Sakai Heavy Flavour (HF) in pp, p-pb & Pb-Pb } Heavy-flavour (charm & beauty) production } Initial hard scatterings (M HF >> Λ QCD ) } pp collisions } est
More informationCharm reconstruction using a micro-vertexing technique with the STAR Silicon Vertex Detectors
Charm reconstruction using a micro-vertexing technique with the SAR Silicon Vertex Detectors Kent State University, Kent, Ohio 444, USA E-mail: bouchet@rcf.bnl.rhic.gov Due to their production at the early
More informationSuppression of neutral pion production at large transverse momentum measured with the ALICE experiment in Pb-Pb collisions at s NN =2.
Suppression of neutral pion production at large transverse momentum measured with the ALICE experiment in Pb-Pb collisions at s NN =.76 ev Gustavo Conesa Balbastre for the ALICE collaboration 6/5/11 G.
More informationMassimo Venaruzzo for the ALICE Collaboration INFN and University of Trieste
Massimo Venaruzzo for the ALICE Collaboration INFN and University of Trieste 16 th International Conference in Quantum Chromo-Dynamics (QCD 2012) Montpellier (2-6 July 2012) Outline Resonances in pp collisions:
More informationPhysics with Tagged Forward Protons using the STAR Detector at RHIC. The Relativistic Heavy Ion Collider The pp2pp Experiment STAR 2009
Physics with Tagged Forward Protons using the STAR Detector at RHIC The Relativistic Heavy Ion Collider The pp2pp Experiment 2002 2003 STAR 2009 Elastic and Diffractive Processes Elastic scattering Detect
More informationSTRANGENESS PRODUCTION IN HEAVY ION COLLISIONS AT RELATIVISTIC ENERGIES *
Romanian Reports in Physics, Vol. 64, No. 3, P. 722 727, 2012 STRANGENESS PRODUCTION IN HEAVY ION COLLISIONS AT RELATIVISTIC ENERGIES * OANA RISTEA, A. JIPA, C. RISTEA, C. BEŞLIU, ŞTEFANIA VELICA University
More informationCharged Particle Production in Pb+Pb Collisions at snn=2.76 TeV with the ATLAS detector at the LHC
Charged Particle Production in Pb+Pb Collisions at snn=2.76 TeV with the ATLAS detector at the LHC Dominik Derendarz for the ATLAS Collaboration Institute of Nuclear Physics PAN, Kraków, Poland Introduction
More informationMeasurement of Quenched Energy Flow for Dijets in PbPb collisions with CMS
Measurement of Quenched Energy Flow for Dijets in PbPb collisions with CMS For the CMS Collaboration NPA Seminar Yale, USA 15 October, 2015 Relativistic Heavy Ion Collisions Trying to answer two important
More information