3,382 research outputs found
Charmless B Decays Involving Vector Mesons in Belle
Using the data sample of 10.5 fb-1 collected by the Belle detector, we
searched for two-body charmless decays involving vector mesons. The clear
signal signature of B+ -> phi K+ is seen and its branching fraction is measured
to be (1.39+.32-.30 +- 0.2) X 10-5. The evidence for B+ -> rho pi+, B0 -> rho-
pi+ and B+ -> phi K*+ is reported and their branching fractions are determined.
No significant signals are observed for B0 -> phi K0S, -> phi K*0, -> rho- K+,
B+ -> rho K+, -> omega pi+ and -> omega K+ only the 90% C.L. upper limits are
given.Comment: 4 pages, Proceedings of the 4th International Conference on B Physics
& CP Violation, Ise-Shima, Japan, February 19 - 23, 200
Nuclear matter with off-shell propagation
Symmetric nuclear matter is studied within the conserving, self-consistent
T-matrix approximation. This approach involves off-shell propagation of
nucleons in the ladder diagrams. The binding energy receives contributions from
the background part of the spectral function, away form the quasiparticle peak.
The Fermi energy at the saturation point fulfills the Hugenholz-Van Hove
relation. In comparison to the Brueckner-Hartree-Fock approach, the binding
energy is reduced and the equation of state is harde
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