Results 111 to 120 of about 6,937 (251)

Quarkonium in a viscous QGP

open access: yesNuclear Physics A, 2009
v2: removed line numbering, updated refs; 4 pages, 1 figure; to appear in the conference proceedings for Quark Matter 2009, March 30 - April 4, Knoxville ...
Adrian Dumitru, Adrian Dumitru
openaire   +2 more sources

Heavy Quarkonium States With Baryonic Chemical Potential

open access: yesAdvances in High Energy Physics
In this work, we have studied the dissociation behavior of 1S and 2S states of quarkonium using quasiparticle approach where the Debye mass depends on baryonic chemical potential.
Siddhartha Solanki   +2 more
doaj   +1 more source

Heavy Hybrids: decay to and mixing with Heavy Quarkonium

open access: yesEPJ Web of Conferences, 2017
We report on a recent QCD based research on hybrid mesons containing cc̄ or bb̄ quarks. We present results for the spectrum, the decay widths to heavy quarkonium, and the role of mixing with the latter.
Oncala Rubén, Soto Joan
doaj   +1 more source

Boosting perturbative QCD stability in quarkonium production

open access: yesJournal of High Energy Physics, 2019
The aim of this paper is to introduce a general way to stabilize the perturbative QCD computations of heavy quarkonium production in the boosted or high-momentum transferring region with tree-level generators only.
Hua-Sheng Shao
doaj   +1 more source

Quarkonium Production at STAR [PDF]

open access: yesProceedings of XXIst International Europhysics Conference on High Energy Physics — PoS(EPS-HEP2011), 2012
We report the results on heavy quarkonium production in p+p and Au+Au collisions at midrapidity via the dielectron decay channel at sqrt(s_NN) = 200 GeV from the STAR experiment at RHIC. Results on the J/psi p_T spectra in p+p collisions are presented for 2 < p_T < 10 GeV/c. The B-meson feed-down contribution to the inclusive J/psi yield has been
openaire   +3 more sources

The effect of chemical potential on imaginary potential and entropic force

open access: yesPhysics Letters B, 2017
Imaginary potential and entropic force represent different mechanisms for melting the heavy quarkonium. In this paper, we study the chemical potential effect on these two quantities with respect to a moving quarkonium from the AdS/CTF duality. We observe
Zi-qiang Zhang, De-fu Hou, Gang Chen
doaj   +1 more source

The dynamics of quarkonium production [PDF]

open access: yesNuclear Physics B - Proceedings Supplements, 1999
Comment: Talk given at the 3rd International Conference on Hyperons, Charm and Beauty Hadrons, Genova, Italy, June 1998.
openaire   +4 more sources

Universal kinematic scaling as a probe of factorized long-distance effects in high-energy quarkonium production

open access: yesEuropean Physical Journal C: Particles and Fields, 2018
Dimensional analysis reveals general kinematic scaling rules for the momentum, mass, and energy dependence of Drell–Yan and quarkonium cross sections.
Pietro Faccioli   +3 more
doaj   +1 more source

Two-loop integrals for CP-even heavy quarkonium production and decays

open access: yesJournal of High Energy Physics, 2017
By employing the method of differential equations, we compute the various types of two-loop master integrals involved in CP-even heavy quarkonium exclusive production and decays.
Long-Bin Chen, Yi Liang, Cong-Feng Qiao
doaj   +1 more source

Quarkonium Level Spacings

open access: yesPhysics Letters B, 1977
Motivated by the apparent equal spacing M (ϒ′) - M (ϒ) = M ψi) - M (ψ), we show that the potential for which quarkonium level spacings are independent of quark mass, in the nonrelativistic limit, is V ( r ) = C In ( r / r 0 ). We enumerate consequences of the logarithmic potential and present an alternative interpretation of the data.
Chris Quigg, Jonathan L. Rosner
openaire   +2 more sources

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