English
Related papers

Related papers: Net-Baryon fluctuations at the QCD critical point

200 papers

The magnitude of the local fluctuations of the net baryon number and electric charge differs widely between the confined and deconfined phases, and the difference is partially frozen at an early stage in relativistic heavy ion collisions.…

Nuclear Theory · Physics 2010-05-28 M. Asakawa , U. Heinz , B. Muller

In this work we study the consequences of a longitudinal Bjorken expansion and a Hubble-like temperature cooling scenario on a 1+1D non-linear model of the diffusive dynamics of fluctuations in the net-baryon density. The equilibrium…

Nuclear Theory · Physics 2023-02-01 Grégoire Pihan , Marcus Bluhm , Masakiyo Kitazawa , Taklit Sami , Marlene Nahrgang

Ultrarelativistic heavy-ion collisions are considered ideal environments for exploring the QCD phase diagram and probing the properties of the QGP as functions of temperature and baryon chemical potential. At the highest energies, such as…

High Energy Physics - Experiment · Physics 2025-10-13 Mesut Arslandok

We perform a finite-size scaling analysis of net-proton number cumulants in Au+Au collisions at center-of-mass energies between $\sqrt{s_{\rm{NN}}} = 2.4$ GeV and 54.4 GeV to search for evidence of a critical point in the QCD phase diagram.…

Nuclear Theory · Physics 2024-05-20 Agnieszka Sorensen , Paul Sorensen

We investigate the evolution of the net-proton kurtosis and the kurtosis of the chiral order parameter near the critical point in the model of nonequilibrium chiral fluid dynamics. The order parameter is propagated explicitly and coupled to…

High Energy Physics - Phenomenology · Physics 2016-03-23 Christoph Herold , Marlene Nahrgang , Yupeng Yan , Chinorat Kobdaj

Based on a nonequilibrium-statistical relativistic diffusion model that is consistent with quantum chromodynamics (QCD), we investigate baryon stopping in relativistic heavy-ion collisions at SPS, RHIC, and LHC energies. The net-proton…

High Energy Physics - Phenomenology · Physics 2023-04-17 Johannes Hoelck , Emiko Hiyama , Georg Wolschin

Fluctuations provide a powerful tool for elucidating the nature of strongly-interacting matter in the QCD phase diagram. In heavy-ion-collision systems, the net-particle number fluctuations are captured at the moment of chemical freeze-out.…

Nuclear Theory · Physics 2023-03-15 Jamie M. Karthein

The size of the average fluctuations of net baryon number and electric charge in a finite volume of hadronic matter differs widely between the confined and deconfined phases. These differences may be exploited as indicators of the formation…

High Energy Physics - Phenomenology · Physics 2009-10-09 Masayuki Asakawa , Ulrich Heinz , Berndt Muller

We study the variance and kurtosis of the net-baryon number in a fluid dynamical model for heavy-ion collisions. It is based on an effective chiral model with dilatons for the strong coupling regime of QCD. Taking into account spinodal…

High Energy Physics - Phenomenology · Physics 2014-12-22 Christoph Herold , Marlene Nahrgang , Yupeng Yan , Chinorat Kobdaj

We study the Fourier coefficients b(k,T) of the net baryon number density in strongly interacting matter at finite temperature. We show that singularities in the complex chemical potential plane connected with phase transitions are…

High Energy Physics - Phenomenology · Physics 2019-04-05 Gabor Andras Almasi , Bengt Friman , Kenji Morita , Krzysztof Redlich

This contribution presents a brief summary of the recent past efforts to experimentally explore the QCD phase diagram at high baryon chemical potentials through heavy-ion collisions. A few measurements are highlighted to present the current…

Nuclear Experiment · Physics 2020-12-30 J. D. Brandenburg

I review recent new lattice QCD results on a few selected topics which are relevant to the heavy ion physics community. Special emphasis is put on the QCD phase diagram towards the chiral limit and at nonzero baryon density as well as the…

High Energy Physics - Lattice · Physics 2021-02-03 Heng-Tong Ding

We consider the (3+1) dimensional expansion and cooling of the chirally-restored and deconfined matter at finite net-baryon densities as expected in heavy-ion collisions at moderate energies. In our approach, we consider chiral fields and…

Nuclear Theory · Physics 2014-07-23 Christoph Herold , Marlene Nahrgang , Igor Mishustin , Marcus Bleicher

The QCD phase diagram may feature a critical end point at a temperature T and baryon chemical potential $\mu$ which is accessible in heavy ion collisions. The universal long wavelength fluctuations which develop near this Ising critical…

High Energy Physics - Phenomenology · Physics 2009-10-31 Boris Berdnikov , Krishna Rajagopal

In this paper, a search for power-law fluctuations with fractality and intermittency analysis to explore the QCD phase diagram and the critical point is summarized. Experimental data on self-similar correlations and fluctuations with…

Nuclear Theory · Physics 2022-07-13 Zhiming Li

We investigate the critical behavior of the first four cumulants of the net-baryon number near the deconfinement critical point in QCD in the limit of heavy quarks. By connecting baryon-number fluctuations to Polyakov loop susceptibilities,…

High Energy Physics - Phenomenology · Physics 2026-05-12 Michał Szymański , Pok Man Lo , Krzysztof Redlich , Chihiro Sasaki

Fluctuations of conserved quantities in heavy-ion collisions are used to probe the phase transition and the QCD critical point for the strongly interacting hot and dense nuclear matter. The STAR experiment has carried out moment analysis of…

Nuclear Experiment · Physics 2015-05-01 Xiaofeng Luo

The cumulants of baryon number fluctuations serve as a good probe for experimentally exploring the QCD phase diagram at finite density, giving rise to characteristic fluctuation patterns associated with a possible critical endpoint (CEP).…

High Energy Physics - Phenomenology · Physics 2023-08-17 Zhibin Li , Jingmin Liang , Song He , Li Li

We study clustering of baryons at the freeze-out point of relativistic heavy-ion collisions. Using a Walecka-Serot model for the nucleon-nucleon (NN) interaction we analyze how the modified/critical $\sigma$ mode---responsible for the NN…

High Energy Physics - Phenomenology · Physics 2019-08-08 Edward Shuryak , Juan M. Torres-Rincon

We investigate the chemical potential and baryon number density of the hadron-quark phase transition in neutron star matter. The hadron matter is described with relativistic mean field theory, and the quark matter is described with the…

Nuclear Theory · Physics 2019-09-04 Zhan Bai , Yu-xin Liu