Open AccessHuge right-handed current effects inB→K*(Kπ)ell+ell−in supersymmetry
Author(s) -
Enrico Lunghi,
Joaquim Matias
Publication year - 2007
Publication title -
journal of high energy physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.998
H-Index - 261
eISSN - 1126-6708
pISSN - 1029-8479
DOI - 10.1088/1126-6708/2007/04/058
Subject(s) - physics , particle physics , supersymmetry , flavour , factorization , quantum chromodynamics , transverse plane , order (exchange) , neutral current , operator (biology) , nuclear physics , engineering , chemistry , structural engineering , finance , biochemistry , algorithm , gene , transcription factor , computer science , neutrino , economics , repressor
Transverse asymmetries in the decay B->K*(K pi)l+l- are an extremelysensitive probe of right-handed flavour-changing neutral currents. We show howto include the contribution from the chiral partner of the electromagneticoperator on the transverse asymmetries at NLO in QCD factorization. We thenconsider supersymmetric models with non-minimal flavour violation in thedown-squark sector. We include all the relevant experimental constraints andpresent a numerical formula for B->Xs gamma that takes into account the mostrecent NNLO calculations. We show that the flavour-changing parameters of thesemodels are poorly constrained by present data and allow for large effects onthe transverse asymmetries that we consider.Comment: 12 pages, 4 figures, version to appear on JHE
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