# Measurement of the effective $B_srightarrow K^+K^-$ lifetime

Abstract : A measurement of the effective $B_srightarrow K^+K^-$ lifetime is presented using approximately $37 pb^{-1}$ 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 $B_s$ meson system and is determined by two complementary approaches as $tau_{B_sto K^+K^-} = 1.440 pm 0.096 (stat) pm 0.008 (syst) pm 0.003 (model) ps$.
Document type :
Journal articles

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Submitted on : Monday, November 14, 2011 - 4:56:30 PM
Last modification on : Monday, January 24, 2022 - 4:16:02 PM

### Citation

R. Aaij, C. Abellan Beteta, B. Adeva, M. Adinolfi, C. Adrover, et al.. Measurement of the effective $B_srightarrow K^+K^-$ lifetime. Physics Letters B, Elsevier, 2012, 707, pp.349-356. ⟨10.1016/j.physletb.2011.12.058⟩. ⟨in2p3-00641056⟩

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