B --> pi l nu Decay and |V_{ub}|

Details B --> pi l nu Decay and |V_{ub}| B --> pi l nu Decay and |V_{ub}|

2001-05-16

arxiv.org/abs/hep-ph/0105154v2

Phys.Lett. B515 (2001) 57-64

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, ReVtex, 7 figures, corrected a mistyped factor 1/2

Scientific paper

10.1016/S0370-2693(01)00838-3

B --> pi l nu decay is studied in the effective theory of heavy quark with
infinite mass limit. The leading order heavy flavor-spin independent universal
wave functions which parametrize the relevant matrix elements are evaluated via
light cone sum rule method in the effective theory. The important quark mixing
matrix element |V_{ub}| is then extracted via B --> pi l nu decay mode.

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