Measurements are presented of the CP violation observables S and C in the decays of B0 and anti-B0 mesons to the J/ψ K0S final state. The data sample corresponds to an integrated luminosity of 3.0 fb^−1 collected with the LHCb experiment in proton-proton collisions at center-of-mass energies of 7 and 8 TeV, and contains a total of 41560 selected B0 and anti-B0 decays. The analysis of the time evolution of these decays yields S = 0.731 ± 0.035(stat) ± 0.020(syst) and C = −0.038 ± 0.032(stat) ± 0.005(syst). In the standard model, S equals sin(2β) to a good level of precision. The values are consistent with the current world averages and with the standard model expectations.

Aaij, R., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., Albrecht, J., et al. (2015). Measurement of CP Violation in B0 → J/ψ K0S Decays. PHYSICAL REVIEW LETTERS, 115(3), 1-9 [10.1103/PhysRevLett.115.031601].

Measurement of CP Violation in B0 → J/ψ K0S Decays

Capriotti, L.;CARBONE, ANGELO;FERRARI, FABIO;GALLI, DOMENICO;MUSSINI, MANUEL;PATRIGNANI, CLAUDIA;PERAZZINI, STEFANO;VAGNONI, VINCENZO MARIA;ZANGOLI, MARIA;
2015

Abstract

Measurements are presented of the CP violation observables S and C in the decays of B0 and anti-B0 mesons to the J/ψ K0S final state. The data sample corresponds to an integrated luminosity of 3.0 fb^−1 collected with the LHCb experiment in proton-proton collisions at center-of-mass energies of 7 and 8 TeV, and contains a total of 41560 selected B0 and anti-B0 decays. The analysis of the time evolution of these decays yields S = 0.731 ± 0.035(stat) ± 0.020(syst) and C = −0.038 ± 0.032(stat) ± 0.005(syst). In the standard model, S equals sin(2β) to a good level of precision. The values are consistent with the current world averages and with the standard model expectations.
2015
Aaij, R., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., Albrecht, J., et al. (2015). Measurement of CP Violation in B0 → J/ψ K0S Decays. PHYSICAL REVIEW LETTERS, 115(3), 1-9 [10.1103/PhysRevLett.115.031601].
Aaij, R., Adeva, B.; Adinolfi, M.; Affolder, A.; Ajaltouni, Z.; Akar, S.; Albrecht, J.; Alessio, F.; Alexander, M.; Ali, S.; Alkhazov, G.; Cartelle, P...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/515024
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