Quark coalescence for charmed mesons in ultrarelativistic heavy-ion collisions

By V. Greco, C. Ko, R. Rapp. 2003

313 citations recorded by the source corpus.

Abstract We investigate effects of charm-quark interactions in a quark–gluon plasma on the production of D and J / ψ mesons in high-energy heavy-ion collisions. Employing a previously constructed coalescence model that successfully reproduces the transverse momentum ( p T ) spectra and elliptic flow ( v 2 ( p T ) ) of light hadrons at RHIC from underlying light-quark distributions at the phase transition temperature T c , D-meson and J / ψ p T -spectra are evaluated. For the charm-quark distributions, we consider two limiting scenarios: (i) no rescattering, corresponding to perturbative QCD (pQCD) spectra and (ii) complete thermalization including transverse expansion. We find that D-mesons acquire a minimal v 2 inherited from their light-quark content and corresponding semileptonic decay spectra of single electrons practically preserve the v 2 of the parent particles, exhibiting marked differences between the pQCD and thermal scenarios for p T ⩾ 1 GeV . Likewise, the p T -spectra and yields of J / ψ 's differ appreciably in the two scenarios.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/7722779a45ce9cfdcb7f7bec0883dab3a9091825

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Nuclear and High Energy Physics

Citations in the corpus

Elliptic flow of electrons from heavy-flavour hadron decays at mid-rapidity in Pb-Pb collisions at √sNN=2.76 TeV (2016, background): “Hadronisation via the recombination of heavy quarks with light quarks from the thermalized medium could further increase the elliptic ﬂow of heavy-ﬂavour hadrons and their decay products [38–40].”
Λ c + production in pp collisions at √s=7 TeV and in p-Pb collisions at √sNN=5.02 TeV (2017, background): “The interaction with the medium constituents could modify the hadronisation: a signiﬁcant fraction of low and intermediate-momentum charm and beauty quarks could hadronise via recombination (coalescence) with other quarks from the medium [21, 22].”
Extraction of heavy-flavor transport coefficients in QCD matter (2018, background): “• Catania: ICM in momentum space [58] with massive light quarks (mq=0.”
Heavy-flavour and quarkonium production in the LHC era: from proton–proton to heavy-ion collisions (2015, background): “It was also suggested that low-momentum heavy quarks could hadronise not only via fragmentation in the vacuum, but also via the mechanism of recombination with other quarks from the medium [464,465].”