Results 31 to 40 of about 14,424 (194)
Two-loop Correction to the Leptonic Decay of Quarkonium [PDF]
, 1997 Applying asymptotic expansions at threshold, we compute the two-loop QCD correction to the short-distance coefficient that governs the leptonic decay $\psi\to l^+ l^-$ of a S-wave quarkonium state and discuss its impact on the relation between the ...
Beneke, M., Signer, A., Smirnov, V. A.
core +3 more sources
Scalar quarkonium masses [PDF]
Nuclear Physics B - Proceedings Supplements, 1997 We evaluate the valence approximation to the mass of scalar quarkonium for a range of different parameters. Our results strongly suggest that the infinite volume continuum limit of the mass of $s\overline{s}$ scalar quarkonium lies well below the mass of $f_J(1710)$.
Lee, W., Weingarten, D.
openaire +2 more sources
Quarkonium production in Pb-Pb collisions at √SNN = 5.02 TeV with ALICE
EPJ Web of Conferences, 2018 Ultra-relativistic heavy-ion collisions at the Large Hadron Collider provide a unique opportunity to study the properties of matter at extreme energy densities where a phase transition from the hadronic matter to a deconfined medium of quarks and gluons,
Francisco Audrey
doaj +1 more source
Schrödinger spectrum generated by the Cornell potential
Open Physics, 2015 The eigenvalues Ednl (a, c) of the d-dimensional Schrödinger equation with the Cornell potential V(r) = −a/r + c r, a, c > 0 are analyzed by means of the envelope method and the asymptotic iteration method (AIM).
Hall Richard L., Saad Nasser
doaj +1 more source
Measurements of quarkonia production [PDF]
EPJ Web of ConferencesQuarkonium production in high-energy hadronic collisions is a useful tool to investigate fundamental aspects of Quantum Chromodynamics, from the proton and nucleus structure to deconfinement and the properties of the Quark Gluon Plasma (QGP).
Massacrier Laure
doaj +1 more source
Entropic destruction of heavy quarkonium in quark-gluon plasma with gluon condensate
Physics Letters B, 2020 It has been argued that the peak of the quarkonium entropy at the deconfinement transition is related to the entropic force which induces dissociation of quarkonium states.
Zi-qiang Zhang, De-fu Hou
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Spin Splitting Spectroscopy of Heavy Quark and Antiquarks Systems
Advances in High Energy Physics, Volume 2020, Issue 1, 2020., 2020 Phenomenological potentials describe the quarkonium systems like cc¯,bb,¯ and b¯c where they give a good accuracy for the mass spectra. In the present work, we extend one of our previous works in the central case by adding spin‐dependent terms to allow for relativistic corrections.
Hesham Mansour +3 more
wiley +1 more source
Quarkonium formation time in quark-gluon plasma [PDF]
, 2013 The quarkonium formation time in a quark-gluon plasma (QGP) is determined from the space-time correlator of heavy quark vector currents using the quarkonium in-medium mass and wave function obtained from heavy quark potentials extracted from the lattice ...
Ko, Che Ming +2 more
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Advances in High Energy Physics, Volume 2020, Issue 1, 2020., 2020 The transverse momentum spectra of J/ψ, ψ(2S), and Y(nS, n = 1, 2, 3) produced in proton‐proton (p + p), proton‐antiproton p+p¯, proton‐lead (p + Pb), gold‐gold (Au + Au), and lead‐lead (Pb + Pb) collisions over a wide energy range are analyzed by the (two‐component) Erlang distribution, the Hagedorn function (the inverse power‐law), and the Tsallis ...
Qi Wang, Fu-Hu Liu, Roelof Bijker
wiley +1 more source
Quarkonia as probes of initial and final states in small systems with ALICE [PDF]
EPJ Web of ConferencesThe multiple parton−parton interactions (MPIs) are an important element to describe the observed collective flow and strangeness enhancement in high multiplicity pp and p−Pb collisions, the so-called small systems.
Choudhury Subikash
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