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

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

2001-06-19

arxiv.org/abs/hep-ph/0106208v3

Phys.Lett. B519 (2001) 219-228

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, ReVtex, 2 figures, corrected signs in some formulae

Scientific paper

10.1016/S0370-2693(01)01128-5

B --> rho l nu decay is analyzed in the effective theory of heavy quark with infinite mass limit. The matrix element relevant to the heavy to light vector meson semileptonic decays is parametrized by a set of four heavy flavor-spin independent universal wave functions at the leading order of effective theory. The form factors are calculated at the leading 1/m_Q order using the light cone sum rule method in the framework of effective theory. |V_{ub}| is then extracted via B --> rho l nu decay mode.

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