The decay B-0s→ ψ(2S)K+π-is observed using a data set corresponding to an integrated luminosity of 3.0fb-1collected by the LHCb experiment in pp collisions at centre-of-mass energies of 7 and 8 TeV. The branching fraction relative to the B0→ ψ(2S)K+π-decay mode is measured to be, where fs/fd indicates the uncertainty due to the ratio of probabilities for a b quark to hadronise into a B0sor B0meson. Using an amplitude analysis, the fraction of decays proceeding via an intermediate K*(892)0meson is measured to be 0.645±0.049(stat)±0.049(syst) and its longitudinal polarisation fraction is 0.524±0.056(stat)±0.029(syst). The relative branching fraction for this component is determined to be. In addition, the mass splitting between the B0sand B0mesons is measured as M(B0s)-M(B0)=87.45±0.44(stat)±0.09(syst)MeV/c2.

Observation of the decay B-0s→ ψ(2S)K+π- / 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: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 747:(2015), pp. 484-494. [10.1016/j.physletb.2015.06.038]

Observation of the decay B-0s→ ψ(2S)K+π-

Bizzeti A.;
2015

Abstract

The decay B-0s→ ψ(2S)K+π-is observed using a data set corresponding to an integrated luminosity of 3.0fb-1collected by the LHCb experiment in pp collisions at centre-of-mass energies of 7 and 8 TeV. The branching fraction relative to the B0→ ψ(2S)K+π-decay mode is measured to be, where fs/fd indicates the uncertainty due to the ratio of probabilities for a b quark to hadronise into a B0sor B0meson. Using an amplitude analysis, the fraction of decays proceeding via an intermediate K*(892)0meson is measured to be 0.645±0.049(stat)±0.049(syst) and its longitudinal polarisation fraction is 0.524±0.056(stat)±0.029(syst). The relative branching fraction for this component is determined to be. In addition, the mass splitting between the B0sand B0mesons is measured as M(B0s)-M(B0)=87.45±0.44(stat)±0.09(syst)MeV/c2.
2015
747
484
494
Observation of the decay B-0s→ ψ(2S)K+π- / 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: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 747:(2015), pp. 484-494. [10.1016/j.physletb.2015.06.038]
Aaij, R.; Adeva, B.; Adinolfi, M.; Affolder, A.; Ajaltouni, Z.; Akar, S.; Albrecht, J.; Alessio, F.; Alexander, M.; Ali, S.; Alkhazov, G.; Alvarez Car...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1209530
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