Higher order fluctuations and correlations of conserved charges from lattice QCD

Szabolcs Borsanyi; Zoltan Fodor; Jana N. Guenther; Sandor K. Katz; Attila Pasztor; Israel Portillo; Claudia Ratti; K. K. Szabó

doi:10.1007/JHEP10(2018)205

Higher order fluctuations and correlations of conserved charges from lattice QCD

Szabolcs Borsanyi, Zoltan Fodor, Jana N. Guenther, Sandor K. Katz, Attila Pasztor, Israel Portillo, Claudia Ratti, K. K. Szabó

Physics

Research output: Contribution to journal › Article › peer-review

102 Scopus citations

Abstract

We calculate several diagonal and non-diagonal fluctuations of conserved charges in a system of 2+1+1 quark flavors with physical masses, on a lattice with size 48³ × 12. Higher order fluctuations at μ_B = 0 are obtained as derivatives of the lower order ones, simulated at imaginary chemical potential. From these correlations and fluctuations we construct ratios of net-baryon number cumulants as functions of temperature and chemical potential, which satisfy the experimental conditions of strangeness neutrality and proton/baryon ratio. Our results qualitatively explain the behavior of the measured cumulant ratios by the STAR collaboration.

Original language	English (US)
Article number	205
Journal	Journal of High Energy Physics
Volume	2018
Issue number	10
DOIs	https://doi.org/10.1007/JHEP10(2018)205
State	Published - Oct 1 2018

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

Access to Document

10.1007/JHEP10(2018)205

Cite this

@article{e810834fdfe844ecba44667b048a1e50,

title = "Higher order fluctuations and correlations of conserved charges from lattice QCD",

abstract = "We calculate several diagonal and non-diagonal fluctuations of conserved charges in a system of 2+1+1 quark flavors with physical masses, on a lattice with size 483 × 12. Higher order fluctuations at μB = 0 are obtained as derivatives of the lower order ones, simulated at imaginary chemical potential. From these correlations and fluctuations we construct ratios of net-baryon number cumulants as functions of temperature and chemical potential, which satisfy the experimental conditions of strangeness neutrality and proton/baryon ratio. Our results qualitatively explain the behavior of the measured cumulant ratios by the STAR collaboration.",

author = "Szabolcs Borsanyi and Zoltan Fodor and Guenther, {Jana N.} and Katz, {Sandor K.} and Attila Pasztor and Israel Portillo and Claudia Ratti and Szab{\'o}, {K. K.}",

note = "Funding Information: Article funded by SCOAP3. Publisher Copyright: {\textcopyright} 2018, The Author(s).",

year = "2018",

month = oct,

day = "1",

doi = "10.1007/JHEP10(2018)205",

language = "English (US)",

volume = "2018",

journal = "Journal of High Energy Physics",

issn = "1126-6708",

publisher = "Springer Verlag",

number = "10",

}

TY - JOUR

T1 - Higher order fluctuations and correlations of conserved charges from lattice QCD

AU - Borsanyi, Szabolcs

AU - Fodor, Zoltan

AU - Guenther, Jana N.

AU - Katz, Sandor K.

AU - Pasztor, Attila

AU - Portillo, Israel

AU - Ratti, Claudia

AU - Szabó, K. K.

PY - 2018/10/1

Y1 - 2018/10/1

N2 - We calculate several diagonal and non-diagonal fluctuations of conserved charges in a system of 2+1+1 quark flavors with physical masses, on a lattice with size 483 × 12. Higher order fluctuations at μB = 0 are obtained as derivatives of the lower order ones, simulated at imaginary chemical potential. From these correlations and fluctuations we construct ratios of net-baryon number cumulants as functions of temperature and chemical potential, which satisfy the experimental conditions of strangeness neutrality and proton/baryon ratio. Our results qualitatively explain the behavior of the measured cumulant ratios by the STAR collaboration.

AB - We calculate several diagonal and non-diagonal fluctuations of conserved charges in a system of 2+1+1 quark flavors with physical masses, on a lattice with size 483 × 12. Higher order fluctuations at μB = 0 are obtained as derivatives of the lower order ones, simulated at imaginary chemical potential. From these correlations and fluctuations we construct ratios of net-baryon number cumulants as functions of temperature and chemical potential, which satisfy the experimental conditions of strangeness neutrality and proton/baryon ratio. Our results qualitatively explain the behavior of the measured cumulant ratios by the STAR collaboration.

UR - http://www.scopus.com/inward/record.url?scp=85056103398&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85056103398&partnerID=8YFLogxK

U2 - 10.1007/JHEP10(2018)205

DO - 10.1007/JHEP10(2018)205

M3 - Article

AN - SCOPUS:85056103398

SN - 1126-6708

VL - 2018

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 10

M1 - 205

ER -

Higher order fluctuations and correlations of conserved charges from lattice QCD

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this