The B− → D+ K− π− decay is observed in a data sample corresponding to 3.0 fb^−1 of pp collision data recorded by the LHCb experiment during 2011 and 2012. Its branching fraction is measured to be B(B− → D+ K− π−) = (7.31 ± 0.19 ± 0.22 ± 0.39) × 10^−5 where the uncertainties are statistical, systematic and from the branching fraction of the normalization channel B− → D+ π− π−, respectively. An amplitude analysis of the resonant structure of the B− → D+ K− π− decay is used to measure the contributions from quasi-two-body B− → D0∗(2400)0 K−, B− → D2∗(2460)0 K−, and B− → DJ∗(2760)0 K− decays, as well as from nonresonant sources. The DJ∗(2760)0 resonance is determined to have spin 1.

R. Aaij, B. Adeva, M. Adinolfi, A. Affolder, Z. Ajaltouni, S. Akar, et al. (2015). First Observation and Amplitude Analysis of the B− → D+ K− π− Decay. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 91(9), 1-24 [10.1103/PhysRevD.91.092002].

First Observation and Amplitude Analysis of the B− → D+ K− π− Decay

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

Abstract

The B− → D+ K− π− decay is observed in a data sample corresponding to 3.0 fb^−1 of pp collision data recorded by the LHCb experiment during 2011 and 2012. Its branching fraction is measured to be B(B− → D+ K− π−) = (7.31 ± 0.19 ± 0.22 ± 0.39) × 10^−5 where the uncertainties are statistical, systematic and from the branching fraction of the normalization channel B− → D+ π− π−, respectively. An amplitude analysis of the resonant structure of the B− → D+ K− π− decay is used to measure the contributions from quasi-two-body B− → D0∗(2400)0 K−, B− → D2∗(2460)0 K−, and B− → DJ∗(2760)0 K− decays, as well as from nonresonant sources. The DJ∗(2760)0 resonance is determined to have spin 1.
2015
R. Aaij, B. Adeva, M. Adinolfi, A. Affolder, Z. Ajaltouni, S. Akar, et al. (2015). First Observation and Amplitude Analysis of the B− → D+ K− π− Decay. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 91(9), 1-24 [10.1103/PhysRevD.91.092002].
R. Aaij; B. Adeva; M. Adinolfi; A. Affolder; Z. Ajaltouni; S. Akar; J. Albrecht; F. Alessio; M. Alexander; S. Ali; G. Alkhazov; P. Alvarez Cartelle; A...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/480594
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