Author: Christof Roland
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
Event-by-event Fluctuations of Particle Ratios in Central Pb + Pb Collisions at 20 to 158 AGeV
Author: Christof Roland
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
Event-by-event Fluctuations of the Particle Yield Ratios in Heavy-ion Collisions at 20 - 158 AGeV
Author: Dmytro Kresan
Publisher:
ISBN:
Category :
Languages : en
Pages : 258
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 258
Book Description
Multiparticle Dynamics - Proceedings Of The Xxxi International Symposium
Author: Yu-ting Bai
Publisher: World Scientific
ISBN: 9814489433
Category : Science
Languages : en
Pages : 515
Book Description
This volume contains more than 80 papers by theorists and experimentalists in the field of multiparticle production. A large variety of domains in high energy physics are covered. For each of these domains, an overview is given before the newest results are presented.
Publisher: World Scientific
ISBN: 9814489433
Category : Science
Languages : en
Pages : 515
Book Description
This volume contains more than 80 papers by theorists and experimentalists in the field of multiparticle production. A large variety of domains in high energy physics are covered. For each of these domains, an overview is given before the newest results are presented.
Event-by-Event Identified Particle Ratio Fluctuations in Pb-Pb Collisions with ALICE
Author: Mesut Arslandok
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Publisher:
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Category :
Languages : en
Pages :
Book Description
Energy Dependence of Transverse Momentum Fluctuations in Pb+Pb Collisions at the CERN Super Proton Synchrotron (SPS) at 20A to 158A GeV.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Results are presented on event-by-event fluctuations of transverse momenta p{sub T} in central Pb+Pb interactions at 20A, 30A, 40A, 80A, and 158A GeV. The analysis was performed for charged particles at forward center-of-mass rapidity (1.1
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Results are presented on event-by-event fluctuations of transverse momenta p{sub T} in central Pb+Pb interactions at 20A, 30A, 40A, 80A, and 158A GeV. The analysis was performed for charged particles at forward center-of-mass rapidity (1.1
Evidence for Transverse Momentum and Pseudorapidity Dependent Event Plane Fluctuations in PbPb and PPb Collisions
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
A systematic study of the factorization of long-range azimuthal two-particle correlations into a product of single-particle anisotropies is presented as a function of pT and [eta] of both particles and as a function of the particle multiplicity in PbPb and pPb collisions. The data were taken with the CMS detector for PbPb collisions at √sNN=2.76 TeV and pPb collisions at √sNN=5.02 TeV, covering a very wide range of multiplicity. Factorization is observed to be broken as a function of both particle pT and [eta]. When measured with particles of different pT, the magnitude of the factorization breakdown for the second Fourier harmonic reaches 20% for very central PbPb collisions but decreases rapidly as the multiplicity decreases. The data are consistent with viscous hydrodynamic predictions, which suggest that the effect of factorization breaking is mainly sensitive to the initial-state conditions rather than to the transport properties (e.g., shear viscosity) of the medium. The factorization breakdown is also computed with particles of different [eta]. The effect is found to be weakest for mid-central PbPb events but becomes larger for more central or peripheral PbPb collisions, and also for very-high-multiplicity pPb collisions. The [eta]-dependent factorization data provide new insights to the longitudinal evolution of the medium formed in heavy ion collisions.
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
A systematic study of the factorization of long-range azimuthal two-particle correlations into a product of single-particle anisotropies is presented as a function of pT and [eta] of both particles and as a function of the particle multiplicity in PbPb and pPb collisions. The data were taken with the CMS detector for PbPb collisions at √sNN=2.76 TeV and pPb collisions at √sNN=5.02 TeV, covering a very wide range of multiplicity. Factorization is observed to be broken as a function of both particle pT and [eta]. When measured with particles of different pT, the magnitude of the factorization breakdown for the second Fourier harmonic reaches 20% for very central PbPb collisions but decreases rapidly as the multiplicity decreases. The data are consistent with viscous hydrodynamic predictions, which suggest that the effect of factorization breaking is mainly sensitive to the initial-state conditions rather than to the transport properties (e.g., shear viscosity) of the medium. The factorization breakdown is also computed with particles of different [eta]. The effect is found to be weakest for mid-central PbPb events but becomes larger for more central or peripheral PbPb collisions, and also for very-high-multiplicity pPb collisions. The [eta]-dependent factorization data provide new insights to the longitudinal evolution of the medium formed in heavy ion collisions.
Flavor Fluctuations in Central Pb-pb Collisions at 158 GeV Nucleon
Author: Christof Roland
Publisher:
ISBN:
Category :
Languages : en
Pages : 111
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 111
Book Description
Flavor Fluctuations in Central Pb+Pb Collisions at 158 GeV/nucleon
Author: Christof Roland
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Detailed Analysis of Two Particle Correlations in Central Pb-Au Collisions at 158 GeV Per Nucleon
Author: Dariusz Antończyk
Publisher:
ISBN:
Category :
Languages : en
Pages : 171
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 171
Book Description
Studies of Azimuthal Dihadron Correlations in Ultra-central PbPb Collisions at $\sqrt{s_{NN}}
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 38
Book Description
Azimuthal dihadron correlations of charged particles have been measured in PbPb collisions at $\sqrt{s_{NN}}$ = 2.76 TeV by the CMS collaboration, using data from the 2011 LHC heavy-ion run. The data set includes a sample of ultra-central (0-0.2% centrality) PbPb events collected using a trigger based on total transverse energy in the hadron forward calorimeters and the total multiplicity of pixel clusters in the silicon pixel tracker. A total of about 1.8 million ultra-central events were recorded, corresponding to an integrated luminosity of 120 inverse microbarns. The observed correlations in ultra-central PbPb events are expected to be particularly sensitive to initial-state fluctuations. The single-particle anisotropy Fourier harmonics, from $v_2$ to $v_6$, are extracted as a function of particle transverse momentum. At higher transverse momentum, the $v_2$ harmonic becomes significantly smaller than the higher-order $v_n$ (n greater than or equal to 3). The pt-averaged $v_2$ and $v_3$ are found to be equal within 2%, while higher-order $v_n$ decrease as n increases. The breakdown of factorization of dihadron correlations into single-particle azimuthal anisotropies is observed. This effect is found to be most prominent in the ultra-central PbPb collisions, where the initial-state fluctuations play a dominant role. As a result, a comparison of the factorization data to hydrodynamic predictions with event-by-event fluctuating initial conditions is also presented.
Publisher:
ISBN:
Category :
Languages : en
Pages : 38
Book Description
Azimuthal dihadron correlations of charged particles have been measured in PbPb collisions at $\sqrt{s_{NN}}$ = 2.76 TeV by the CMS collaboration, using data from the 2011 LHC heavy-ion run. The data set includes a sample of ultra-central (0-0.2% centrality) PbPb events collected using a trigger based on total transverse energy in the hadron forward calorimeters and the total multiplicity of pixel clusters in the silicon pixel tracker. A total of about 1.8 million ultra-central events were recorded, corresponding to an integrated luminosity of 120 inverse microbarns. The observed correlations in ultra-central PbPb events are expected to be particularly sensitive to initial-state fluctuations. The single-particle anisotropy Fourier harmonics, from $v_2$ to $v_6$, are extracted as a function of particle transverse momentum. At higher transverse momentum, the $v_2$ harmonic becomes significantly smaller than the higher-order $v_n$ (n greater than or equal to 3). The pt-averaged $v_2$ and $v_3$ are found to be equal within 2%, while higher-order $v_n$ decrease as n increases. The breakdown of factorization of dihadron correlations into single-particle azimuthal anisotropies is observed. This effect is found to be most prominent in the ultra-central PbPb collisions, where the initial-state fluctuations play a dominant role. As a result, a comparison of the factorization data to hydrodynamic predictions with event-by-event fluctuating initial conditions is also presented.