Charm degrees of freedom in the quark gluon plasma

Mukherjee, Swagato; Petreczky, Peter; Sharma, Sayantan

doi:10.1103/PhysRevD.93.014502

Charm degrees of freedom in the quark gluon plasma

Journal Article · Mon Jan 11 00:00:00 EST 2016 · Physical Review D

DOI:https://doi.org/10.1103/PhysRevD.93.014502· OSTI ID:1254816

Mukherjee, Swagato ^[1]; Petreczky, Peter ^[1]; Sharma, Sayantan ^[1]

Brookhaven National Lab. (BNL), Upton, NY (United States)

The lattice QCD studies on fluctuations and correlations of charm quantum number have established that deconfinement of charm degrees of freedom sets in around the chiral crossover temperature, T_c; i.e., charm degrees of freedom carrying fractional baryonic charge start to appear. When we reexamine those same lattice QCD data we show that, in addition to the contributions from quarklike excitations, the partial pressure of charm degrees of freedom may still contain significant contributions from open-charm-meson- and baryonlike excitations associated with integral baryonic charges for temperatures up to 1.2T_c. Finally, charm-quark quasiparticles become the dominant degrees of freedom for temperatures T>1.2T_c.

View Accepted Manuscript (DOE)

Research Organization:: Brookhaven National Laboratory (BNL), Upton, NY (United States)

Sponsoring Organization:: USDOE; USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)

Grant/Contract Number:: SC0012704

OSTI ID:: 1254816

Alternate ID(s):: OSTI ID: 1234305

Report Number(s):: BNL--112229-2016-JA; KB0301020

Journal Information:: Physical Review D, Journal Name: Physical Review D Journal Issue: 1 Vol. 93; ISSN PRVDAQ; ISSN 2470-0010

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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