Rapidity window dependences of higher order cumulants and diffusion master equation

Kitazawa, Masakiyo

doi:10.1016/j.nuclphysa.2015.07.008

Cited by 25 publications

(19 citation statements)

References 50 publications

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“…The η coverage (∆η) dependence of fluctuation observables allows the study of the history of the hot medium [16,17]. Figure 3 shows the dependence of volume independent cumulant ratios of the ∆N Ch distributions at √ s NN = 14.5 GeV on the pseudo-rapidity window width for different centralities (left figure), as well as, for different number of participants N part (middle figure).…”

Section: Resultsmentioning

confidence: 99%

Higher Moments of Net-Particle Multiplicity Distributions

Thäder

2016

Nuclear Physics A

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Studying fluctuations of conserved quantities, such as baryon number, strangeness, and charge, provides insights into the properties of matter created in high-energy nuclear collisions. Lattice QCD calculations suggest that higher moments of these quantities are sensitive to the phase structure of the hot and dense nuclear matter created in such collisions. In this paper, we present first experimental results of volume and temperature independent cumulant ratios of net-charge and net-proton distributions in Au+Au collisions at √ s NN = 14.5 GeV completing the first RHIC Beam Energy Scan (BES-I) program for √ s NN = 7.7 to 200 GeV, together with the first measurement of fully corrected net-kaon results, measured with the STAR detector at RHIC at mid-rapidity and a transverse momentum up to p T = 2 GeV/c. The pseudorapidity dependence of the √ s NN = 14.5 GeV net-charge cumulant ratios is discussed. The estimated uncertainties on the ratio c 4 /c 2 , the most statistics-hungry of the present observables, at √ s NN = 7.7 GeV in the upcoming RHIC BES-II program will also be presented.

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Section: Resultsmentioning

confidence: 99%

Higher Moments of Net-Particle Multiplicity Distributions

Thäder

2016

Nuclear Physics A

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“…It is also planed to install a Time-of-Flight (eTOF) detector at the west end cap of the STAR TPC to extend the PID capability at forward region. The iTPC upgrade is important to test the criticality and study dynamical evolution of the fluctuations by looking at the rapidity coverage dependence for the fluctuations of conserved quantities [40]. In Fig.7 right, the blue band is the extrapolating from current measurements by assuming critical contributions (κσ 2 ∝N 3 [41]).…”

Section: Detector Upgrades and Beam Energy Scan Phase II At Rhicmentioning

confidence: 99%

Exploring the QCD Phase Structure with Beam Energy Scan in Heavy-ion Collisions

Luo¹

2016

Nuclear Physics A

115

124

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Beam energy scan programs in heavy-ion collisions aim to explore the QCD phase structure at high baryon density. Sensitive observables are applied to probe the signatures of the QCD phase transition and critical point in heavy-ion collisions at RHIC and SPS. Intriguing structures, such as dip, peak and oscillation, have been observed in the energy dependence of various observables. In this paper, an overview is given and corresponding physics implications will be discussed for the experimental highlights from the beam energy scan programs at the STAR, PHENIX and NA61/SHINE experiments. Furthermore, the beam energy scan phase II at RHIC (2019-2020) and other future experimental facilities for studying the physics at low energies will be also discussed.

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“…Here, we take x = 5000 as an illustration and only incorporate the contributions of quark number fluctuations and correlations up to fourth order as in Eq. (59). The auxiliary horizontal axis shows the corresponding quark-antiquark asymmetry parameter z.…”

Section: Application: Cumulants For Net Protons In Heavy Ion Collisionsmentioning

confidence: 99%

“…For example, we should assume more realistic quark number fluctuations and correlations in a thermal quark system in midrapidity via grand-canonical statistics or canonical statistics with Bernoulli trial selection of the midrapidity range. In addition we should also consider various effects related to finite acceptance window such as the diffusion/blur of charges during hadronization and subsequent hadronic re-scatterings as well as that caused by resonance decay [49,[54][55][56][57][58][59][60][61][62][63][64][65][66][67]. We will study these effects in this framework in the future.…”

Section: Application: Cumulants For Net Protons In Heavy Ion Collisionsmentioning

confidence: 99%

Statistical method in quark combination model *

et al. 2020

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We present a new method of solving the probability distribution for baryons, antibaryons and mesons in the hadronization of constituent quark and antiquark system. The hadronization is governed by the quark combination rule in the quark combination model developed by the Shandong Group. We use the method of generating function to derive the outcome of the quark combination rule, which is much simpler and easier to be generalized than the previous method. Furthermore, we use the formula of the quark combination rule and its generalization to calculate the multiplicity distribution of net-protons as well as the ratios of cumulants for net-protons in relativistic heavy-ion collisions.

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Rapidity window dependences of higher order cumulants and diffusion master equation

Cited by 25 publications

References 50 publications

Higher Moments of Net-Particle Multiplicity Distributions

Higher Moments of Net-Particle Multiplicity Distributions

Exploring the QCD Phase Structure with Beam Energy Scan in Heavy-ion Collisions

Statistical method in quark combination model *

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