The rare decay B --> X(s) gamma gamma is studied in the standard model (SM) and in two different versions (Model I and Model II) of the two Higgs doublet model (2HDM). In the SM the branching ratio into hard photons is about 1 x 10(-7) and can be appreciably different in the 2HDM. We also introduce a forward-backward asymmetry which gives an additional handle to discriminate different models. (C) 1997 Elsevier Science B.V.
The B->X(s)gamma gamma rare decay / L., R., Ricciardi, G., A., S.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 396:(1997), pp. 231-237. [10.1016/S0370-2693(97)00084-1]
The B->X(s)gamma gamma rare decay
RICCIARDI, GIULIA;
1997
Abstract
The rare decay B --> X(s) gamma gamma is studied in the standard model (SM) and in two different versions (Model I and Model II) of the two Higgs doublet model (2HDM). In the SM the branching ratio into hard photons is about 1 x 10(-7) and can be appreciably different in the 2HDM. We also introduce a forward-backward asymmetry which gives an additional handle to discriminate different models. (C) 1997 Elsevier Science B.V.File in questo prodotto:
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