ar X iv : h ep - p h / 99 05 27 7 v 1 1 0 M ay 1 99 9 FERMILAB - Pub - 99 / 142 - T CALT - 68
نویسندگان
چکیده
The B̄ → Kγ branching fraction is predicted using heavy quark spin symmetry at large recoil to relate the tensor and (axial-)vector form factors, using heavy quark flavor symmetry to relate the B decay form factors to the measured D → Kl̄ν form factors, and extrapolating the semileptonic B decay form factors to large recoil assuming nearest pole dominance. This prediction agrees with data surprisingly well, and we comment on its implications for the extraction of |Vub| from B̄ → ρlν̄.
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ar X iv : h ep - p h / 98 05 28 7 v 1 1 1 M ay 1 99 8 FERMILAB – PUB – 97 / 231 – T Heavy Baryon Production and Decay
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