A measurement of the charm-mixing parameter y_CP using D0 → K+ K−, D0 → π+ π−, and D0 → K− π+ decays is reported. The D0 mesons are required to originate from semimuonic decays of B− and anti-B0 mesons. These decays are partially reconstructed in a data set of proton-proton collisions at center-of-mass energies of 7 and 8 TeV collected with the LHCb experiment and corresponding to an integrated luminosity of 3 fb^−1. The y_CP parameter is measured to be (0.57 ± 0.13(stat) ± 0.09(syst))%, in agreement with, and as precise as, the current world-average value.

Aaij, R., Abellán Beteta, C., Adeva, B., Adinolfi, M., Aidala, C., Ajaltouni, Z., et al. (2019). Measurement of the Charm-Mixing Parameter y_CP. PHYSICAL REVIEW LETTERS, 122(1), 1-10 [10.1103/PhysRevLett.122.011802].

Measurement of the Charm-Mixing Parameter y_CP

Betti, F.;Capriotti, L.;Carbone, A.;Ferrari, F.;Galli, D.;Patrignani, C.;Perazzini, S.;Pisani, F.;Vagnoni, V.;Zucchelli, S.
2019

Abstract

A measurement of the charm-mixing parameter y_CP using D0 → K+ K−, D0 → π+ π−, and D0 → K− π+ decays is reported. The D0 mesons are required to originate from semimuonic decays of B− and anti-B0 mesons. These decays are partially reconstructed in a data set of proton-proton collisions at center-of-mass energies of 7 and 8 TeV collected with the LHCb experiment and corresponding to an integrated luminosity of 3 fb^−1. The y_CP parameter is measured to be (0.57 ± 0.13(stat) ± 0.09(syst))%, in agreement with, and as precise as, the current world-average value.
2019
Aaij, R., Abellán Beteta, C., Adeva, B., Adinolfi, M., Aidala, C., Ajaltouni, Z., et al. (2019). Measurement of the Charm-Mixing Parameter y_CP. PHYSICAL REVIEW LETTERS, 122(1), 1-10 [10.1103/PhysRevLett.122.011802].
Aaij, R.; Abellán Beteta, C.; Adeva, B.; Adinolfi, M.; Aidala, C.A.; Ajaltouni, Z.; Akar, S.; Albicocco, P.; Albrecht, J.; Alessio, F.; Alexander, M.;...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/688114
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