Measurements of b-hadron masses are performed with the exclusive decay modes B+ → J/ψ K+, B0 → J/ψK*0, B0 → J/ψ K0S , B0s → J/ψ ϕ and Λb0 → J/ψ Λ 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 → μ+ μ− decays and verified to be known to a relative precision of 2 x 10^−4 using other two-body decays. The results are more precise than previous measurements, particularly in the case of the B0s and Λb0 masses.
Measurement of b-hadron Masses
CARBONE, ANGELO;GALLI, DOMENICO;PERAZZINI, STEFANO;VAGNONI, VINCENZO MARIA;
2012
Abstract
Measurements of b-hadron masses are performed with the exclusive decay modes B+ → J/ψ K+, B0 → J/ψK*0, B0 → J/ψ K0S , B0s → J/ψ ϕ and Λb0 → J/ψ Λ 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 → μ+ μ− decays and verified to be known to a relative precision of 2 x 10^−4 using other two-body decays. The results are more precise than previous measurements, particularly in the case of the B0s and Λb0 masses.File in questo prodotto:
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