Idioma:

An improved Standard Model prediction of BR(B→τν) and its implications for New Physics

Bona, M. ; Ciuchini, M. ; Franco, E. ; Lubicz, V. ; Martinelli, G. ; Parodi, F. ; Pierini, M. ; Schiavi, C. ; Silvestrini, L. ; Sordini, V. ; Stocchi, A. ; Tarantino, C. ; Vagnoni, V.

Physics letters. B, 2010-04, Vol.687 (1), p.61-69 [Periódico revisado por pares]

Kidlington: Elsevier B.V

Texto completo disponível

Citações Citado por

Enviar para

Título:
An improved Standard Model prediction of BR(B→τν) and its implications for New Physics
Autor: Bona, M. ; Ciuchini, M. ; Franco, E. ; Lubicz, V. ; Martinelli, G. ; Parodi, F. ; Pierini, M. ; Schiavi, C. ; Silvestrini, L. ; Sordini, V. ; Stocchi, A. ; Tarantino, C. ; Vagnoni, V.
Assuntos: Elementary particles ; Exact sciences and technology ; Flavours ; Higgs bosons ; High Energy Physics - Phenomenology ; Leptonic B decays ; Mathematical analysis ; Mathematical models ; Minimal Flavour Violation ; Nuclear physics ; Permissible error ; Physics ; Supersymmetry ; The physics of elementary particles and fields ; Triangles ; Two-Higgs doublet models ; Unitarity Triangle analysis
É parte de: Physics letters. B, 2010-04, Vol.687 (1), p.61-69
Notas: ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
Descrição: The recently measured B→τν branching ratio allows to test the Standard Model by probing virtual effects of new heavy particles, such as a charged Higgs boson. The accuracy of the test is currently limited by the experimental error on BR(B→τν) and by the uncertainty on the parameters fB and |Vub|. The redundancy of the Unitarity Triangle fit allows to reduce the error on these parameters and thus to perform a more precise test of the Standard Model. Using the current experimental inputs, we obtain BR(B→τν)SM=(0.84±0.11)×10−4, to be compared with BR(B→τν)exp=(1.73±0.34)×10−4. The Standard Model prediction can be modified by New Physics effects in the decay amplitude as well as in the Unitarity Triangle fit. We discuss how to disentangle the two possible contributions in the case of minimal flavour violation at large tanβ and generic loop-mediated New Physics. We also consider two specific models with minimal flavour violation: the Type-II Two Higgs Doublet Model and the Minimal Supersymmetric Standard Model.
Editor: Kidlington: Elsevier B.V
Idioma: Inglês

Links

Voltar para lista de resultados

Realização: Logos de Redes Sociais:

An improved Standard Model prediction of BR(B→τν) and its implications for New Physics

Bona, M. ; Ciuchini, M. ; Franco, E. ; Lubicz, V. ; Martinelli, G. ; Parodi, F. ; Pierini, M. ; Schiavi, C. ; Silvestrini, L. ; Sordini, V. ; Stocchi, A. ; Tarantino, C. ; Vagnoni, V.

Kidlington: Elsevier B.V

Buscando em bases de dados remotas. Favor aguardar.