Published 2002 | Version v1
Miscellaneous Restricted

Charmonium dissociation at the QCD phase transition

Creators

  • 1. Rostock Univ. (Germany). Fachbereich Physik
  • 2. Joint Inst. for Nuclear Research, Dubna (Russian Federation). Lab. of Theoretical Physics
  • 3. Lab. for Information Technologies, JINR, Dubna (Russian Federation)

Description

We investigate the charmonium breakup process in a medium of light mesons and its modification due to the Mott effect for the light (pion, rho) and open-charm (D, D*) quark-antiquark states at the chiral/deconfinement phase transition. A presented model calculation for the processes J/ψ + π → anti D + D* demonstrates that this Mott effect leads to a threshold effect in the thermal averaged charmonium breakup cross section. We suggest this physical mechanism as an explanation of the anomalous J/ψ suppression phenomenon in the CERN NA50 experiment. (orig.)

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Part of:
Ultrarelativistic heavy-ion collisions. Proceedings of the International Workshop XXX on Gross Properties of Nuclei and Nuclear Excitations

Additional details

Publishing Information

Imprint Title
Ultrarelativistic heavy-ion collisions. Proceedings of the International Workshop XXX on Gross Properties of Nuclei and Nuclear Excitations
Imprint Pagination
377 p.
Journal Page Range
p. 274-279
ISSN
0720-8715
Report number
INIS-DE--0079

Conference

Title
30. international workshop on gross properties of nuclei and nuclear excitations - ultrarelativistic heavy-ion collisions
Acronym
HIRSCHEGG 2002
Dates
13-19 Jan 2002
Place
Hirschegg (Austria)

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
33022399
Subject category
S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
Resource subtype / Literary indicator
Conference
Descriptors DEI
D MESONS; D*-2010 MESONS; J PSI-3097 MESONS; MESON-MESON INTERACTIONS; NUCLEAR MATTER; NUCLEAR TEMPERATURE; PAIR PRODUCTION; PHASE TRANSFORMATIONS; QUANTUM CHROMODYNAMICS; TEMPERATURE DEPENDENCE; TRANSVERSE ENERGY
Descriptors DEC
BOSONS; CHARM PARTICLES; CHARMED MESONS; CHARMONIUM; ELEMENTARY PARTICLES; ENERGY; FIELD THEORIES; HADRON-HADRON INTERACTIONS; HADRONS; INTERACTIONS; KINETIC ENERGY; MATTER; MESONS; PARTICLE INTERACTIONS; PARTICLE PRODUCTION; PSEUDOSCALAR MESONS; QUANTUM FIELD THEORY; QUARKONIUM; VECTOR MESONS

Optional Information