RT Journal Article
T1 Effective lifetime measurements in the B0s→K+K−, B0→K+π−and B0s→π+K−decays
A1 LHCb Collaboration, 
A1 Adeva Andany, Bernardo
A1 Álvarez Cartelle, Paula
A1 Dosil Suárez, Álvaro
A1 Gallas Torreira, Abraham Antonio
A1 Hernando Morata, José Ángel
A1 Pazos Álvarez, Antonio
A1 Pérez Trigo, Eliseo
A1 Plo Casasus, Máximo
A1 Romero Vidal, Antonio
A1 Saborido Silva, Juan José
A1 Sanmartín Sedes, Brais
A1 Santamarina Ríos, Cibrán
A1 Seco Miguélez, Marcos Antonio
A1 Vázquez Regueiro, Pablo
A1 Vázquez Sierra, Carlos
A1 Vieites Díaz, María
AB Measurements of the effective lifetimes in the B0s→K+K−, B0→K+π−and B0s→π+K−decays are presented using 1.0fb−1of ppcollision data collected at a centre-of-mass energy of 7TeV by the LHCb experiment. The analysis uses a data-driven approach to correct for the decay time acceptance. The measured effective lifetimes areτB0s→K+K−=1.407±0.016(stat)±0.007(syst)ps,τB0→K+π−=1.524±0.011(stat)±0.004(syst)ps,τB0s→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 B0s→K+K−decay and provides constraints on contributions from physics beyond the Standard Model to the B0smixing phase and the width difference  Γs.
PB Elsevier
SN 0370-2693
YR 2014
FD 2014
LK http://hdl.handle.net/10347/21716
UL http://hdl.handle.net/10347/21716
LA eng
NO Collaboration, L. (2014). Effective lifetime measurements in the B0s→K+K−, B0→K+π−and B0s→π+K−decays .Physics Letters B, 736, 446-454
DS Minerva
RD 28 abr 2026