D-mesons and charmonium states in hot pion matter

Journal Article · Wed Mar 15 04:00:00 EST 2006 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.73.035204· OSTI ID:20771378

Fuchs, C; Faessler, Amand ^[1]; Martemyanov, B V; Krivoruchenko, M I ^[1]

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1. Institut fuer Theoretische Physik, Universitaet Tuebingen, Auf der Morgenstelle 14, D-72076 Tuebingen (Germany)

We calculate the in-medium D-meson self-energies in a hot pion gas induced by resonance interactions with pions. The appropriate resonances in the s, p, and d waves of the D-meson-pion pair are represented by low-lying scalar, vector, and tensor D* mesons. At temperatures around 200 MeV the D-meson mass drops by 30 MeV and the scattering width grows to 60 MeV. Similar medium effects are found for the D*-vector mesons. This opens and/or enhances the decay and/or dissociation channels of the charmonium states {psi}{sup '},{chi}{sub c}, and J/{psi} to DD,D*D,DD*, and D*D* pairs in pion matter.

• OSTI ID: 20771378
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 3 Vol. 73; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CHI0-3415 MESONS
D MESONS
D WAVES
D*-2010 MESONS
J PSI-3097 MESONS
MEV RANGE
PARTICLE DECAY
PARTICLE INTERACTIONS
PIONS
PSI-3770 MESONS
REST MASS
S WAVES
SELF-ENERGY