Complementarity of Bs->mu+mu- and B-> K l+l- in New Physics searches

Abstract : 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.


http://hal.in2p3.fr/in2p3-00731289
Contributor : Marechal Françoise <>
Submitted on : Wednesday, September 12, 2012 - 3:00:05 PM
Last modification on : Wednesday, September 12, 2012 - 3:00:05 PM

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IN2P3 | LAL | CNRS

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D. Becirevic, N. Kosnik, F. Mescia, E. Schneider. Complementarity of Bs->mu+mu- and B-> K l+l- in New Physics searches. S. Narison. 16th International Conference in Quantum ChromoDynamics (QCD12), Jul 2012, Montpellier, France. Elsevier, 234, pp.177-180, 2013, <10.1016/j.nuclphysbps.2012.12.009>. <in2p3-00731289>

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