Dynamical net-proton fluctuations near a QCD critical point

Herold, Christoph; Nahrgang, Marlene; Yan, Yupeng; Kobdaj, Chinorat

doi:10.1103/PhysRevC.93.021902

Title: Dynamical net-proton fluctuations near a QCD critical point

Full Record
Other Related Research

Authors:: Herold, Christoph; Nahrgang, Marlene; Yan, Yupeng; Kobdaj, Chinorat

Publication Date:: Tue Feb 16 00:00:00 EST 2016

Sponsoring Org.:: USDOE

OSTI Identifier:: 1238084

Grant/Contract Number:: FG02-05ER41367

Resource Type:: Publisher's Accepted Manuscript

Journal Name:: Physical Review C

Additional Journal Information:: Journal Name: Physical Review C Journal Volume: 93 Journal Issue: 2; Journal ID: ISSN 2469-9985

Publisher:: American Physical Society

Country of Publication:: United States

Language:: English

Citation Formats


                    Herold, Christoph, Nahrgang, Marlene, Yan, Yupeng, and Kobdaj, Chinorat. Dynamical net-proton fluctuations near a QCD critical point.  United States: N. p., 2016. 
Web.  doi:10.1103/PhysRevC.93.021902.

Copy to clipboard


                    Herold, Christoph, Nahrgang, Marlene, Yan, Yupeng, & Kobdaj, Chinorat. Dynamical net-proton fluctuations near a QCD critical point.  United States.  https://doi.org/10.1103/PhysRevC.93.021902

Copy to clipboard


                    Herold, Christoph, Nahrgang, Marlene, Yan, Yupeng, and Kobdaj, Chinorat. Tue .  
"Dynamical net-proton fluctuations near a QCD critical point".  United States.  https://doi.org/10.1103/PhysRevC.93.021902.

Copy to clipboard


                    
@article{osti_1238084,

  title        = {Dynamical net-proton fluctuations near a QCD critical point},

  author       = {Herold, Christoph and Nahrgang, Marlene and Yan, Yupeng and Kobdaj, Chinorat},

  abstractNote = {},

  doi          = {10.1103/PhysRevC.93.021902},

  journal      = {Physical Review C},

  number       = 2,

  volume       = 93,

  place        = {United States},

  year         = {Tue Feb 16 00:00:00 EST 2016},

  month        = {Tue Feb 16 00:00:00 EST 2016}

}

Copy to clipboard

Journal Article:

Free Publicly Available Full Text

Accepted Manuscript (Publisher)

Publisher's Version of Record
https://doi.org/10.1103/PhysRevC.93.021902

Other availability

Search WorldCat to find libraries that may hold this journal

Citation Metrics:

Cited by: 60 works

Citation information provided by
Web of Science

Save / Share:

Export Metadata

Save to My Library

Similar Records in DOE PAGES and OSTI.GOV collections:

Diffusive dynamics of critical fluctuations near the QCD critical point

Journal Article Nahrgang, Marlene ; Bluhm, Marcus ; Schäfer, Thomas ; ... - Physical Review. D.

A quantitatively reliable theoretical description of the dynamics of fluctuations in nonequilibrium is indispensable in the experimental search for the QCD critical point by means of ultrarelativistic heavy-ion collisions. Herein we consider the fluctuations of the net-baryon density which becomes the slow, critical mode near the critical point. Due to net-baryon number conservation the dynamics is described by the fluid dynamical diffusion equation, which we extend to contain a white noise stochastic current. Including nonlinear couplings from the 3d Ising model universality class in the free energy functional, we solve the fully interacting theory in a finite size system. Wemore »« less
Cited by 57
https://doi.org/10.1103/physrevd.99.116015

Full Text Available
Impact of resonance decays on critical point signals in net-proton fluctuations

Journal Article Bluhm, Marcus ; Nahrgang, Marlene ; Bass, Steffen A. ; ... - European Physical Journal. C, Particles and Fields

The non-monotonic beam energy dependence of the higher cumulants of net-proton fluctuations is a widely studied signature of the conjectured presence of a critical point in the QCD phase diagram. In this work we study the effect of resonance decays on critical fluctuations. We show that resonance effects reduce the signatures of critical fluctuations, but that for reasonable parameter choices critical effects in the net-proton cumulants survive. The relative role of resonance decays has a weak dependence on the order of the cumulants studied with a slightly stronger suppression of critical effects for higher-order cumulants.
Cited by 21
https://doi.org/10.1140/epjc/s10052-017-4771-3
Net-proton number fluctuations in the presence of the QCD critical point

Journal Article Szymański, Michał ; Bluhm, Marcus ; Redlich, Krzysztof ; ... - Journal of Physics. G, Nuclear and Particle Physics

Event-by-event fluctuations of the net-proton number studied in heavy-ion collisions provide an important means in the search for the conjectured critical end point (CP) in the QCD phase diagram. We propose a phenomenological model in which the fluctuations of the chiral critical mode couple to protons and anti-protons. This allows us to study the behavior of the net-proton number fluctuations in the presence of the CP. Calculating the net-proton number cumulants, Cn with n=1,2,3,4, along the phenomenological freeze-out line we show that the ratio of variance and mean C2/C1, as well as kurtosis C4/C2 resemble qualitative properties observed in datamore »« less
Cited by 6
https://doi.org/10.1088/1361-6471/ab614c

Full Text Available
Fluctuation dynamics near the QCD critical point

Journal Article Du, Lipei ; Heinz, Ulrich ; Rajagopal, Krishna ; ... - Physical Review. C

The evolution of nonhydrodynamic slow processes near the QCD critical point is explored with the novel hydro+ framework, which extends the conventional hydrodynamic description by coupling it to additional explicitly evolving slow modes describing long wavelength fluctuations. Here, their slow relaxation is controlled by critical behavior of the correlation length and is independent from gradients of matter density and pressure that control the evolution of the hydrodynamic quantities. In this exploratory study, we follow the evolution of the slow modes on top of a simplified QCD matter background, allowing us to clearly distinguish and study, both separately and in combination,more »« less
https://doi.org/10.1103/physrevc.102.054911

Full Text Available
Freezing out fluctuations in $Hydro +$ near the QCD critical point

Journal Article Pradeep, Maneesha ; Rajagopal, Krishna ; Stephanov, Mikhail ; ... - Physical Review D

We introduce a freeze-out procedure to convert the critical fluctuations in a droplet of quark-gluon plasma (QGP) that has, as it expanded and cooled, passed close to a posited critical point on the phase diagram into cumulants of hadron multiplicities that can subsequently be measured. The procedure connects the out-of-equilibrium critical fluctuations described in concert with the hydrodynamic evolution of the droplet of QGP by extended hydrodynamics, known as Hydro+, with the subsequent kinetic description in terms of observable hadrons. We introduce a critical scalar isoscalar field sigma whose fluctuations cause correlations between observed hadrons due to the couplings ofmore »« less
https://doi.org/10.1103/PhysRevD.106.036017

Similar Records