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Complementarity of Bs->mu+mu- and B-> K l+l- in New Physics searches
Becirevic D., Kosnik N., Mescia F., Schneider E.
Dans Nuclear Physics B - Proceedings Supplements - 16th International Conference in Quantum ChromoDynamics (QCD12), Montpellier : France (2012) - http://hal.in2p3.fr/in2p3-00731289
Physique/Physique des Hautes Energies - Expérience
Physique/Physique des Hautes Energies - Réseau
Physique/Physique des Hautes Energies - Phénoménologie
Complementarity of Bs->mu+mu- and B-> K l+l- in New Physics searches
D. Becirevic1, N. Kosnik2, 3, F. Mescia, E. Schneider4
1 :  LPT - Laboratoire de Physique Théorique d'Orsay [Orsay]
CNRS : UMR8627 – Université Paris XI - Paris Sud
Bâtiment 210 Université Paris XI 91405 Orsay Cedex
France
2 :  J. Stefan Institute
Ljubljana
Jamova 39, P.O. Box 3000, Ljubljana
Slovénie
3 :  LAL - Laboratoire de l'Accélérateur Linéaire
http://www.lal.in2p3.fr/
CNRS : UMR8607 – IN2P3 – Université Paris XI - Paris Sud
Centre Scientifique d'Orsay B.P. 34 91898 ORSAY Cedex
France
4 :  University of Trento [Trento]
http://www.unitn.it/en
University of Trento
via Belenzani, 12 I-38122 Trento
Italie
Groupe Théorie
This year, LHC provided a very stringent bound on Br(Bs->mu+mu-), bringing it closer to the value predicted by the Standard Model (SM). Bs->mu+mu- was believed to be the golden mode at LHCb to find SUSY because a large enhancement was expected in the regime of moderate and large values of tanb. Other scenarios are still possible and a correlation with other decay channels is needed. We show that a complementary information on New Physics (NP) can be obtained model-indepedently from the B-> K l+l- decay mode. We provide a prediction Br(B-> K l+l-) based on the first lattice QCD results for all three relevant form factors, f0(q^2), f+(q^2) and fT(q^2). We were then able to provide the model-independent bounds on the complex couplings to scalar and pseudoscalr operators in the b->s sector.

Communications avec actes
2013
07/2012
Nuclear Physics B - Proceedings Supplements
non spécifiée
234
S. Narison
177-180
Elsevier

16th International Conference in Quantum ChromoDynamics (QCD12)
Montpellier
France
02/07/2012
06/07/2012

LAL 12-333
Contributed to the 16th International Conference in Quantum ChromoDynamics (QCD12), Montpellier, France, 2-6 Jul 2012
Lien vers le texte intégral : 
http://fr.arXiv.org/abs/1209.0969