Higher order cumulants of electric charge and strangeness fluctuations on the crossover line - INSPIRE

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Higher order cumulants of electric charge and strangeness fluctuations on the crossover line

Oct 29, 2020

10 pages

Published in:

Acta Phys.Polon.B 14 (2021) 373

Contribution to:

Criticality in QCD and the Hadron Resonance Gas, 373

e-Print:

2010.15501 [hep-lat]

DOI:

10.5506/APhysPolBSupp.14.373

View in:

ADS Abstract Service

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Abstract: (arXiv)

We present lattice QCD calculations of higher order cumulants of electric charge distributions for small baryon chemical potentials

\mu_B

by using up to NNNLO Taylor expansions. Ratios of these cumulants are evaluated on the pseudo-critical line,

T_{pc}(\mu_B)

, of the chiral transition and compared to corresponding measurements in heavy ion collision experiments by the STAR and PHENIX Collaborations. We demonstrate that these comparisons give strong constraints on freeze-out parameters. Furthermore, we use strangeness fluctuation observables to compute the ratio

\mu_S/\mu_B

on the crossover line and compare it to

\mu_S/\mu_B

at freeze-out stemming from fits to strange baryon yields measured by the STAR Collaboration.

Note:

10 pages, 7 figures, Presented at Criticality in QCD and the Hadron Resonance Gas, 29-31 July 2020, Wroclaw Poland

strangeness: fluctuation
potential: chemical
transition: chiral
charge: electric
yield: measured
hyperon: yield
heavy ion: scattering
higher-order
freeze-out
STAR

References(8)

Figures(9)

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A. Bazavov
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,
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The QCD Equation of State to $\mathcal{O}(\mu_B^6)$ from Lattice QCD

A. Bazavov
(
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,
H. -T. Ding
(
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,
P. Hegde
(
- Bangalore, Indian Inst. Sci.
)
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A. Bazavov
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[5]

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[6]

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Peter Braun-Munzinger
(
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- Darmstadt, Tech. U. and
- Frankfurt U., FIAS
)
,
Alexander Kalweit
(
- CERN
)
,
Krzysztof Redlich
(
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- Darmstadt, EMMI
)
,
Johanna Stachel
(
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)

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[7]

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[8]

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STAR

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•

Jaroslav Adam
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