Measurement of the effective $B_s^0\to K^{+}{K}^{-}$ lifetime

Abstract

A measurement of the effective $B_s^0\to K^{+}{K}^{-}$ lifetime is presented using approximately $37p{b}^{-1}$ of data collected by LHCb during 2010. This quantity can be used to put constraints on contributions from processes beyond the Standard Model in the $B_s^0$ meson system and is determined by two complementary approaches as ${\tau }_{B_s^0\to K^{+}{K}^{-}}=1.440\pm 0.096(stat)\pm 0.008(syst)\pm 0.003(model)ps$.

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• First measurement of time-dependent CP violation in Bs -> K+K- decays
• Rare Decays and CP Violation in the $B_s$ System
• Measurement of mixing and CP violation parameters in two-body charm decays
• Theoretical update of $B$-Mixing and Lifetimes
• Determination of gamma and -2beta_s from charmless two-body decays of beauty mesons
• Testing the Standard Model and searching for New Physics with $B_d\to \pi \pi$ and $B_s\to KK$ decays
• Measurement of the effective $B_s^0\to K^{+}{K}^{-}$ lifetime
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• Heavy Flavour Physics at the LHC
• Rare B decays in the flip SU(5) Model
• Experimental constraints from flavour changing processes and physics beyond the Standard Model