publication . Preprint . 2012

Revisiting the $\Gamma(K \to e \nu)/\Gamma(K \to \mu \nu)$ ratio in supersymmetric unified models

Fonseca , R. M.; Romao , J. C.; Teixeira , A. M.;
Open Access English
  • Published: 09 Jul 2012
  • Country: France
Abstract
It has been pointed out that supersymmetric extensions of the Standard Model can induce significant changes to the theoretical prediction of the ratio $\Gamma(K\rightarrow e\nu)/\Gamma (K\rightarrow\mu\nu)\equiv R_{K}$, through lepton flavour violating couplings. In this work we carry out a full computation of all one-loop corrections to the relevant $\nu\ell H^{+}$ vertex, and discuss the new contributions to $R_{K}$ arising in the context of different constrained (minimal supergravity inspired) models which succeed in accounting for neutrino data, further considering the possibility of accommodating a near future observation of a $\mu\to e\gamma$ transition. W...
Subjects
arXiv: High Energy Physics::Phenomenology
free text keywords: High Energy Physics - Phenomenology, Supersymmetry, neutrinos, meson decays, flavour violation, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], [ PHYS.HPHE ] Physics [physics]/High Energy Physics - Phenomenology [hep-ph]
Related Organizations
Funded by
FCT| SFRH/BD/47795/2008
Project
SFRH/BD/47795/2008
PHENOMENOLOGY OF SUPERSYMMETRIC GRAND UNIFIED THEORIES
  • Funder: Fundação para a Ciência e a Tecnologia, I.P. (FCT)
  • Project Code: SFRH/BD/47795/2008
  • Funding stream: SFRH | Doutoramento
,
FCT| CERN/FP/83503/2008
Project
CERN/FP/83503/2008
Physics Beyond the Standard Model in the Era of the LHC
  • Funder: Fundação para a Ciência e a Tecnologia, I.P. (FCT)
  • Project Code: 83503
  • Funding stream: 3599-PPCDT
,
EC| UNILHC
Project
UNILHC
UNIFICATION IN THE LHC ERA
  • Funder: European Commission (EC)
  • Project Code: 237920
  • Funding stream: FP7 | SP3 | PEOPLE
,
EC| INVISIBLES
Project
INVISIBLES
INVISIBLES
  • Funder: European Commission (EC)
  • Project Code: 289442
  • Funding stream: FP7 | SP3 | PEOPLE
,
FCT| PTDC/FIS/102120/2008
Project
PTDC/FIS/102120/2008
Phenomenology of supersymmetric models - impact for colliders and flavour violation
  • Funder: Fundação para a Ciência e a Tecnologia, I.P. (FCT)
  • Project Code: 102120
  • Funding stream: 3599-PPCDT
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