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arXiv 2007-07-03 DOI 10.1140/epjc/s10052-008-0752-x 0 views

B → K₁(1270) (→ ρK) ℓ+ ℓ- in LEET

Choudhury, S. Rai · Cornell, A. S. · Gaur, Naveen

Original · EN

Flavour Changing Neutral Current decays of the B-meson are a very useful tool for studying possible physics scenarios beyond the Standard Model (SM), where of the many FCNC modes radiative, purely leptonic and semi-leptonic decays of the B-meson are relatively clean tests. Within this context the BELLE collaboration has searched for the B → K₁(1270) γ process and provided an upper bound on this decay. In this work we have used this upper bound in studying the angular coorelations for the related semi-leptonic decay mode B → K₁(1270) (→ ρK) ℓ+ ℓ-, where we have used the form factors that have already been estimated for the B → K₁(1270) γ mode. Note that the additional form factors that are required were calculated using the Large Energy Effective Theory (LEET).

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