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. The signal significance is 8σ and the branching fraction is measured to be B(B+ → D+ K+ π−) = (5.31 ± 0.90 ± 0.48 ± 0.35) × 10^−6, where the uncertainties are statistical, systematic and due to the normalization mode B+ → D− K+ π+, respectively. The Dalitz plot appears to be dominated by broad structures. Angular distributions are exploited to search for quasi-two-body contributions from B+ → D∗2(2460)0 K+ and B+ → D+ K∗(892)0 decays. No significant signals are observed and upper limits are set on their branching fractions.

Aaij, R., Abellán Beteta, C., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., et al. (2016). First Observation of the Rare B+ → D+ K+ π− Decay. PHYSICAL REVIEW D, 93(5), 1-11 [10.1103/PhysRevD.93.051101].

First Observation of the Rare B+ → D+ K+ π− Decay

Capriotti, L.;CARBONE, ANGELO;FERRARI, FABIO;GALLI, DOMENICO;MUSSINI, MANUEL;PATRIGNANI, CLAUDIA;PERAZZINI, STEFANO;VAGNONI, VINCENZO MARIA;ZANGOLI, MARIA;ZUCCHELLI, STEFANO
2016

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. The signal significance is 8σ and the branching fraction is measured to be B(B+ → D+ K+ π−) = (5.31 ± 0.90 ± 0.48 ± 0.35) × 10^−6, where the uncertainties are statistical, systematic and due to the normalization mode B+ → D− K+ π+, respectively. The Dalitz plot appears to be dominated by broad structures. Angular distributions are exploited to search for quasi-two-body contributions from B+ → D∗2(2460)0 K+ and B+ → D+ K∗(892)0 decays. No significant signals are observed and upper limits are set on their branching fractions.
2016
Aaij, R., Abellán Beteta, C., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., et al. (2016). First Observation of the Rare B+ → D+ K+ π− Decay. PHYSICAL REVIEW D, 93(5), 1-11 [10.1103/PhysRevD.93.051101].
Aaij, R.; Abellán Beteta, C.; Adeva, B.; Adinolfi, M.; Affolder, A.; Ajaltouni, Z.; Akar, S.; Albrecht, J.; Alessio, F.; Alexander, M.; Ali, S.; Alkha...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/535498
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