QCD sum rules for D and B mesons in nuclear matter
- Forschungszentrum Dresden-Rossendorf, PF 510119, D-01314 Dresden, Germany and TU Dresden, Institut fuer Theoretische Physik, D-01062 Dresden (Germany)
QCD sum rules for D and B mesons embedded in cold nuclear matter are evaluated. We quantify the mass splitting of D-D and B-B mesons as a function of the nuclear matter density; extrapolated to saturation density it is in the order of 60 and 130 MeV, respectively, driven essentially by the condensates <q{sup {dagger}}q>, <q{sup {dagger}}g{sigma}Gq>, and <qq>. The poorly known condensate <q{sup {dagger}}g{sigma}Gq> may leave room for an even larger D-D mass splitting. The genuine chiral condensate <qq>, amplified by heavy-quark masses, enters the Borel transformed sum rules for the mass splitting beyond linear density dependence. The inclusion of strange quark condensates reveals a numerically smaller and opposite effect for the D{sub s}-D{sub s} mass splitting.
- OSTI ID:
- 21202729
- Journal Information:
- Physical Review. C, Nuclear Physics, Vol. 79, Issue 2; Other Information: DOI: 10.1103/PhysRevC.79.025202; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
Similar Records
Sigma meson in pole-dominated QCD sum rules
J/{psi} and {eta}{sub c} masses in isospin asymmetric hot nuclear matter: A QCD sum rule approach