PURE LEPTONIC RADIATIVE DECAYS B-+ -,D-S-]L-NU-GAMMA AND THE ANNIHILATION GRAPH/

Authors
ATWOOD D EILAM G SONI A
Citation
D. Atwood et al., PURE LEPTONIC RADIATIVE DECAYS B-+ -,D-S-]L-NU-GAMMA AND THE ANNIHILATION GRAPH/, Modern physics letters A, 11(13), 1996, pp. 1061-1067
Citations number
19
Categorie Soggetti
Physics, Nuclear","Physics, Particles & Fields","Physycs, Mathematical
Journal title
Modern physics letters A → ACNP
ISSN journal
02177323
Volume
11
Issue
13
Year of publication
1996
Pages
1061 - 1067
Database
ISI
SICI code
0217-7323(1996)11:13<1061:PLRDB->2.0.ZU;2-8
Abstract
Pure leptonic radiative decays of heavy-light mesons are calculated us ing a very simple nonrelativistic model. For B-+/- the dominant contri bution originates from photon emission from light initial quark. Emiss ion of the photon overcomes the helicity suppression and leads to Br(B -+/- --> l nu gamma) similar to 3.5 x 10(-6) (which is about 16 times more than Br(B-+/- --> mu + v)). Also, we find Br(D-s --> l nu gamma) similar to 2.6 x 10(-5). The importance of these reactions in clarifyi ng the dynamics of the annihilation graph is emphasized.