Measurements of b-hadron masses are performed with the exclusive decay modes B +→J/ψK +, B 0→J/ψK +, B0→J/ψKS0, Bs0→J/ψφ and Λb0→J/ψΛ using an integrated luminosity of 35pb -1 collected in pp collisions at a centre-of-mass energy of 7 TeV by the LHCb experiment. The momentum scale is calibrated with J/ψ→μ +μ - decays and verified to be known to a relative precision of 2 ×10 -4 using other two-body decays. The results are more precise than previous measurements, particularly in the case of the Bs0 and Λb0 masses.
|Número de páginas||8|
|Publicación||Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics|
|Estado||Published - 28 feb 2012|
|Publicado de forma externa||Sí|
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics