In:
Modern Physics Letters A, World Scientific Pub Co Pte Ltd, Vol. 25, No. 13 ( 2010-04-30), p. 1099-1106
Abstract:
New physics in the form of scalar/pseudoscalar operators cannot lower the semileptonic branching ratio Br (B → K μ + μ - ) below its standard model value. In addition, we show that the upper bound on the leptonic branching ratio Br (B s → μ + μ - ) sets a strong constraint on the maximum value of Br (B → K μ + μ - ) in models with multiple Higgs doublets: with the current bound, Br (B → K μ + μ - ) cannot exceed the standard model prediction by more than 2.5%. The conclusions hold true even if the new physics couplings are complex. However, these constraints can be used to restrict new physics couplings only if the theoretical and experimental errors in Br (B → K μ + μ - ) are reduced to a few per cent. The constraints become relaxed in a general class of models with scalar/pesudoscalar operators.
Type of Medium:
Online Resource
ISSN:
0217-7323
,
1793-6632
DOI:
10.1142/S021773231003238X
Language:
English
Publisher:
World Scientific Pub Co Pte Ltd
Publication Date:
2010
detail.hit.zdb_id:
2008260-5
detail.hit.zdb_id:
622919-0
