scholarly journals Resolving discrepancies in the estimation of heavy quark transport coefficients in relativistic heavy-ion collisions

2019 ◽  
Vol 99 (1) ◽  
Author(s):  
Yingru Xu ◽  
Steffen A. Bass ◽  
Pierre Moreau ◽  
Taesoo Song ◽  
Marlene Nahrgang ◽  
...  
Keyword(s):  
Heavy Quark ◽  
Heavy Ion Collisions ◽  
Transport Coefficients ◽  
Heavy Ion ◽  
Relativistic Heavy Ion Collisions ◽  
Ion Collisions

scholarly journals Highlights from PHENIX at RHIC

2018 ◽  
Vol 171 ◽  
pp. 01003
Author(s):  
Rachid Nouicer
Keyword(s):  
Heavy Quark ◽  
Heavy Ion Collisions ◽  
Meson Production ◽  
Heavy Ion ◽  
Relativistic Heavy Ion Collisions ◽  
Dense Medium ◽  
Heavy Flavor ◽  
Theoretical Understanding ◽  
Rapidity Region ◽  
Ion Collisions

Hadrons conveying strange quarks or heavy quarks are essential probes of the hot and dense medium created in relativistic heavy-ion collisions. With hidden strangeness, ϕ meson production and its transport in the nuclear medium have attracted high interest since its discovery. Heavy quark-antiquark pairs, like charmonium and bottomonium mesons, are mainly produced in initial hard scattering processes of partons. While some of the produced pairs form bound quarkonia, the vast majority hadronize into particles carrying open heavy flavor. In this context, the PHENIX collaboration carries out a comprehensive physics program which studies the ϕ meson production, and heavy flavor production in relativistic heavy-ion collisions at RHIC. In recent years, the PHENIX experiment upgraded the detector in installing silicon vertex tracker (VTX) at mid-rapidity region and forward silicon vertex tracker (FVTX) at the forward rapidity region. With these new upgrades, the experiment has collected large data samples, and enhanced the capability of heavy flavor measurements via precision tracking. This paper summarizes the latest PHENIX results concerning ϕ meson, open and closed charm and beauty heavy quark production in relativistic heavy-ion collisions. These results are presented as a function of rapidity, energy and system size, and their interpretation with respect to the current theoretical understanding.

scholarly journals Review of Charmonium and Bottomonium Quark State Production via Relativistic Heavy Ion Collisions

Universe ◽  
2020 ◽  
Vol 6 (1) ◽  
pp. 13
Author(s):  
Leonard S. Kisslinger
Keyword(s):  
Heavy Quark ◽  
Cross Sections ◽  
Heavy Ion Collisions ◽  
Production Cross ◽  
Charm Quark ◽  
Heavy Ion ◽  
Gluon Plasma ◽  
Relativistic Heavy Ion Collisions ◽  
Ion Collisions ◽  
Meson States

This is a review of the production of heavy quark states via relativistic heavy ion collisions in RHIC. The heavy quarks here are c, charm quark, and b, bottom quark. The states are charmonium meson states Ψ ( n S ) , with n = 1,2 and upsilon meson states Υ ( m S ) , with m = 1,2,3. Quantum Chromodynamics (QCD) sum rules were used to derive the result that the Ψ ( 2 S ) and Υ ( 3 S ) are mixed hybrid states, which increase their production cross sections. We also review the Ψ ( n S ) and Υ ( m S ) production cross sections via Cu-Cu and Au-Au collisions, which are very important for this review of the production of heavy quark states in RHIC. The possible detection of the Quark Gluon Plasma (QGP) is also reviewed.

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