Measurements of the effective lifetimes in the Bs 0→K+K-,B0→K +π- and Bs0→π+K- decays are presented using 1.0fb -1 of pp collision data collected at a centre-of-mass energy of 7 TeV by the LHCb experiment. The analysis uses a data-driven approach to correct for the decay time acceptance. The measured effective lifetimes areτBs0→K+K-=1.407±0.016(stat)±0.007(syst) ps,τB0→K+π-=1.524±0.011(stat)±0.004(syst) ps,τBs0→π+K-=1.60±0.06(stat)±0.01(syst) ps. This is the most precise determination to date of the effective lifetime in the Bs0→K+K- decay and provides constraints on contributions from physics beyond the Standard Model to the Bs0 mixing phase and the width difference δΓs. © 2014 The Authors.

Effective lifetime measurements in the Bs 0→K+K-, B0→K+π-and B0 s→π+K-decays / R., A., B., A., M., A., A., A., Z., A., J., A., F., A., M., A., S., A., G., A., P., A., A. a., A., S., A., S., A., Y., A., L., A.n., L. b., A., J., A., R., A., M. b., A., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 736:(2014), pp. 446-454. [10.1016/j.physletb.2014.07.051]

Effective lifetime measurements in the Bs 0→K+K-, B0→K+π-and B0 s→π+K-decays

G. Casse;SARTI, ALESSIO;SCIUBBA, Adalberto;
2014

Abstract

Measurements of the effective lifetimes in the Bs 0→K+K-,B0→K +π- and Bs0→π+K- decays are presented using 1.0fb -1 of pp collision data collected at a centre-of-mass energy of 7 TeV by the LHCb experiment. The analysis uses a data-driven approach to correct for the decay time acceptance. The measured effective lifetimes areτBs0→K+K-=1.407±0.016(stat)±0.007(syst) ps,τB0→K+π-=1.524±0.011(stat)±0.004(syst) ps,τBs0→π+K-=1.60±0.06(stat)±0.01(syst) ps. This is the most precise determination to date of the effective lifetime in the Bs0→K+K- decay and provides constraints on contributions from physics beyond the Standard Model to the Bs0 mixing phase and the width difference δΓs. © 2014 The Authors.
2014
01 Pubblicazione su rivista::01a Articolo in rivista
Effective lifetime measurements in the Bs 0→K+K-, B0→K+π-and B0 s→π+K-decays / R., A., B., A., M., A., A., A., Z., A., J., A., F., A., M., A., S., A., G., A., P., A., A. a., A., S., A., S., A., Y., A., L., A.n., L. b., A., J., A., R., A., M. b., A., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 736:(2014), pp. 446-454. [10.1016/j.physletb.2014.07.051]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/665059
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