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The net-baryon number probability distribution and the related pressure and density are studied in the Cluster Expansion Model (CEM) and the obtained results are extrapolated to the domain of low temperatures. It is found that the rate of…

High Energy Physics - Phenomenology · Physics 2024-12-30 R. N. Rogalyov , V. A. Goy

We discuss properties of the net baryon number probability distribution near the chiral phase transition to explore the effect of critical fluctuations. Our studies are performed within Landau theory, where the coefficients of the…

High Energy Physics - Phenomenology · Physics 2013-12-16 Kenji Morita , Vladimir Skokov , Bengt Friman , Krzysztof Redlich

We compute high-order baryon number fluctuations at finite temperature and density within a QCD-assisted low energy effective field theory. Quantum, thermal and density fluctuations are incorporated with the functional renormalization group…

High Energy Physics - Phenomenology · Physics 2021-10-04 Wei-jie Fu , Xiaofeng Luo , Jan M. Pawlowski , Fabian Rennecke , Rui Wen , Shi Yin

We discuss the modification of the cumulants of the net baryon and net proton distributions due to the global conservation of baryon number in heavy-ion collisions. Corresponding probability distributions and their cumulants are derived…

High Energy Physics - Phenomenology · Physics 2013-05-30 Adam Bzdak , Volker Koch , Vladimir Skokov

We study the critical properties of net-baryon-number fluctuations at the chiral restoration transition in a medium at finite temperature and net baryon density. The chiral dynamics of quantum chromodynamics (QCD) is modeled by the…

High Energy Physics - Phenomenology · Physics 2017-08-02 Gabor Almasi , Bengt Friman , Krzysztof Redlich

High order cumulants of the baryon number distribution are calculated in a 2+1 flavor low energy effective model. Quantum fluctuations are encoded through the functional renormalization group approach. The chiral and deconfinement phase…

High Energy Physics - Phenomenology · Physics 2019-10-23 Rui Wen , Chuang Huang , Wei-jie Fu

We present results for the ratios of mean ($M_B$), variance ($\sigma_B^2$), skewness ($S_B)$ and kurtosis ($\kappa_B$) of net baryon-number fluctuations obtained in lattice QCD calculations with a physical light to strange quark mass ratio.…

We calculate the baryon asymmetry created by the decay of a pseudo Nambu-Goldstone boson whose interactions violate baryon number conservation. Our results are in disagreement with previous results in the original spontaneous baryogenesis…

High Energy Physics - Phenomenology · Physics 2009-10-30 Alexandre Dolgov , Katherine Freese , Raghavan Rangarajan , Mark Srednicki

We study the influence of global baryon number conservation on the non-critical baseline of net baryon cumulants in heavy-ion collisions in a given acceptance, accounting for the asymmetry between the mean-numbers of baryons and…

The maximum entropy method (MEM) and the Gaussian process (GP) regression, which are both well-suited for the treatment of inverse problems, are used to reconstruct net-baryon number distributions based on a finite number of cumulants of…

High Energy Physics - Phenomenology · Physics 2023-03-21 Chuang Huang , Yang-yang Tan , Rui Wen , Shi Yin , Wei-jie Fu

Motivated by the Asynchronous Finite Differences Method utilized for the calculation of the most probable distributions of finite particle number systems, this study employs numerical variation and central difference techniques to provide…

Statistical Mechanics · Physics 2023-04-07 Qi-Wei Liang , Wenyu Wang

It is not obvious which partons in the proton carry its baryon number (BN). We present arguments that BN is associated with a specific topology of gluonic fields, rather than with the valence quarks. The BN distribution is easily confused…

High Energy Physics - Phenomenology · Physics 2007-05-23 G. T Garvey , B. Z. Kopeliovich , B. Povh

We determine the net-baryon multiplicity distribution which reproduces all cumulants measured so far by lattice QCD. We present the dependence on the volume and temperature of this distribution. We find that for temperatures and volumes…

Nuclear Theory · Physics 2019-03-06 Adam Bzdak , Volker Koch

We find that in generic field theories the combined effect of fluctuations and interactions leads to a probability distribution function which describes fractional Brownian Motion (fBM) and ``complex behavior''. To show this we use the…

Statistical Mechanics · Physics 2009-11-07 David Hochberg , Juan Pérez-Mercader

We show that $\omega_B$ or $\omega_{\bar B}$, the squared baryon or antibaryon number fluctuation per baryon or antibaryon, is a possible signature for the quark-gluon plasma that is expected to be created in relativistic heavy ion…

Nuclear Theory · Physics 2009-11-07 Zi-wei Lin , C. M. Ko

We investigate possible finite-volume effects on baryon number susceptibilities of strongly interacting matter. Assuming that a hadronic and a deconfined phase both contribute to the thermodynamic state of a finite system due to…

Nuclear Theory · Physics 2019-01-04 Christian Spieles , Marcus Bleicher , Carsten Greiner

The statistical production of antibaryons is considered within the canonical ensemble formulation. We demonstrate that the antibaryon suppression in small systems due to the exact baryon number conservation is rather different in the…

High Energy Physics - Phenomenology · Physics 2009-10-31 Mark I. Gorenstein , Marek Gazdzicki , Walter Greiner

We calculate volume-independent ratios of cumulants of the net-proton number distribution up to sixth order in a fireball that cools down after the chemical freeze-out. A hadron resonance gas model is used together with the assumption of…

Nuclear Theory · Physics 2021-11-10 Boris Tomasik , Paula Hillmann , Marcus Bleicher

We study the freeze-out parameters in a QCD-assisted effective theory that accurately captures the quantum and in-medium effects of QCD at low energies. Functional renormalization group approach is implemented in our work to incorporate the…

High Energy Physics - Phenomenology · Physics 2023-05-31 Jun-xiang Shao , Wei-jie Fu , Yu-xin Liu

The analytical probability distribution of finite systems obeying Bose-Einstein statistics in one, two, and three dimensions are investigated by using a canonical ensemble approach. Starting from the canonical partition function of the…

Soft Condensed Matter · Physics 2007-05-23 Hongwei Xiong , Shujuan Liu , Guoxiang Huang , FengMin Wu , Zhijun Xu
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