The B+ → D∗− K+ π+ decay potentially provides an excellent way to investigate charm meson spectroscopy. The decay is searched for in a sample of proton-proton collision data collected with the LHCb detector at center-of-mass energies of 7 and 8 TeV, corresponding to an integrated luminosity of 3 fb^−1. A clear signal is observed, and the ratio of its branching fraction to that of the B+ → D*− π+ π+ normalization channel is measured to be B(B+ → D*− K+ π+) / B(B+ → D*− π+ π+) = (6.39 ± 0.27 ± 0.48) × 10^−2, where the first uncertainty is statistical and the second is systematic. This is the first observation of the B+ → D∗− K+ π+ decay.

Aaij, R., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., Albrecht, J., et al. (2017). Observation of the B+ → D∗− K+ π+ Decay. PHYSICAL REVIEW D, 96(1), 1-10 [10.1103/PhysRevD.96.011101].

Observation of the B+ → D∗− K+ π+ Decay

BETTI, FEDERICO;Capriotti, L.;CARBONE, ANGELO;FERRARI, FABIO;GALLI, DOMENICO;MUSSINI, MANUEL;PATRIGNANI, CLAUDIA;PERAZZINI, STEFANO;VAGNONI, VINCENZO MARIA;ZUCCHELLI, STEFANO
2017

Abstract

The B+ → D∗− K+ π+ decay potentially provides an excellent way to investigate charm meson spectroscopy. The decay is searched for in a sample of proton-proton collision data collected with the LHCb detector at center-of-mass energies of 7 and 8 TeV, corresponding to an integrated luminosity of 3 fb^−1. A clear signal is observed, and the ratio of its branching fraction to that of the B+ → D*− π+ π+ normalization channel is measured to be B(B+ → D*− K+ π+) / B(B+ → D*− π+ π+) = (6.39 ± 0.27 ± 0.48) × 10^−2, where the first uncertainty is statistical and the second is systematic. This is the first observation of the B+ → D∗− K+ π+ decay.
2017
Aaij, R., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., Albrecht, J., et al. (2017). Observation of the B+ → D∗− K+ π+ Decay. PHYSICAL REVIEW D, 96(1), 1-10 [10.1103/PhysRevD.96.011101].
Aaij, R.; Adeva, B.; Adinolfi, M.; Ajaltouni, Z.; Akar, S.; Albrecht, J.; Alessio, F.; Alexander, M.; Ali, S.; Alkhazov, G.; Alvarez Cartelle, P.; Alv...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/604863
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