Measurements are presented of the CP violation observables S and C in the decays of B0 and ¯B0mesons to the J/ψK0S final state. The data sample corresponds to an integrated luminosity of 3.0  fb−1collected with the LHCb experiment in proton-proton collisions at center-of-mass energies of 7 and 8 TeV, and contains a total of 41 560 selected B0 and ¯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.

Measurement of CP Violation in B0 →j/ψ KS0 Decays / Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Alvarez Cartelle, P., Alves, A.A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Anderson, J., Andreotti, M., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 115:3(2015). [10.1103/PhysRevLett.115.031601]

Measurement of CP Violation in B0 →j/ψ KS0 Decays

Capriotti, L.;Casse, G.;SARTI, ALESSIO;SCIUBBA, Adalberto;
2015

Abstract

Measurements are presented of the CP violation observables S and C in the decays of B0 and ¯B0mesons to the J/ψK0S final state. The data sample corresponds to an integrated luminosity of 3.0  fb−1collected with the LHCb experiment in proton-proton collisions at center-of-mass energies of 7 and 8 TeV, and contains a total of 41 560 selected B0 and ¯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
Branching fraction CP violation Flavor physics Rare decay Hadron-Hadron scattering (experiments)
01 Pubblicazione su rivista::01a Articolo in rivista
Measurement of CP Violation in B0 →j/ψ KS0 Decays / Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Alvarez Cartelle, P., Alves, A.A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Anderson, J., Andreotti, M., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 115:3(2015). [10.1103/PhysRevLett.115.031601]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/836052
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