Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1997-04-28
Physics
High Energy Physics
High Energy Physics - Phenomenology
talk given at XXXIInd Rencontres de Moriond 'Electroweak Interactions', Les Arcs, France, March 1997, 4 pages, 2 figs
Scientific paper
Nonperturbative effects in exclusive reactions $B\to K^{(*)}ll$ are discussed. Form factors which describe the main long-distance contribution to the meson transition amplitude are calculated within the dispersion formulation of the quark model: namely, the form factors in the decay region are expressed as relativistic double spectral representations through the wave functions of the initial and final mesons. The dilepton forward-backward asymmetry and the lepton polarization turn out to be largely independent of the particular choice of the quark model parameters and can be predicted with high accuracy. At the same time, these asymmetries are sensitive to the short-distance structure of the theory and might be used as a test of the Standard Model and probe of new physics.
No associations
LandOfFree
Long-distance contribution to exclusive rare decays of heavy mesons in quark model does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Long-distance contribution to exclusive rare decays of heavy mesons in quark model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Long-distance contribution to exclusive rare decays of heavy mesons in quark model will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-258609