Measurements of b-hadron masses are performed with the exclusive decay modes B+ to J/ψ K+, B0 to J/ψ K∗0, B0 to J/ψ K0S , B0s toJ/ψφ and Λ0b to J/ψΛ using an integrated luminosity of 35 pb−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 to 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 B0s and Λ0b masses
Measurement of b-hadron masses
CARDINALE, ROBERTA;FONTANELLI, FLAVIO;PATRIGNANI, CLAUDIA;PETROLINI, ALESSANDRO;SANNINO, MARIO;
2012-01-01
Abstract
Measurements of b-hadron masses are performed with the exclusive decay modes B+ to J/ψ K+, B0 to J/ψ K∗0, B0 to J/ψ K0S , B0s toJ/ψφ and Λ0b to J/ψΛ using an integrated luminosity of 35 pb−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 to 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 B0s and Λ0b massesFile in questo prodotto:
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