The first observation of the decay B0 → D0 anti-D0 K+ π− is reported using proton-proton collision data corresponding to an integrated luminosity of 4.7 fb^−1 collected by the LHCb experiment in 2011, 2012 and 2016. The measurement is performed in the full kinematically allowed range of the decay outside of the D*− region. The ratio of the branching fraction relative to that of the control channel B0 → D*− D0 K+ is measured to be R = (14.2 ± 1.1 ± 1.0)% , where the first uncertainty is statistical and the second is systematic. The absolute branching fraction of B0 → D0 anti-D0 K+ π− decays is thus determined to be B(B0 → D0 anti-D0 K+ π−) = (3.50 ± 0.27 ± 0.26 ± 0.30) × 10^−4, where the third uncertainty is due to the branching fraction of the control channel. This decay mode is expected to provide insights to spectroscopy and the charm-loop contributions in rare semileptonic decays.

Aaij, R., Abellán Beteta, C., Ackernley, T., Adeva, B., Adinolfi, M., Afsharnia, H., et al. (2020). First Observation of the Decay B0 → D0 anti-D0 K+ π−. PHYSICAL REVIEW D, 102(5), 1-11 [10.1103/PhysRevD.102.051102].

First Observation of the Decay B0 → D0 anti-D0 K+ π−

Betti, F.;Capriotti, L.;Carbone, A.;Ferrari, F.;Galli, D.;Maccolini, S.;Manuzzi, D.;Patrignani, C.;Perazzini, S.;Pisani, F.;Zucchelli, S.;
2020

Abstract

The first observation of the decay B0 → D0 anti-D0 K+ π− is reported using proton-proton collision data corresponding to an integrated luminosity of 4.7 fb^−1 collected by the LHCb experiment in 2011, 2012 and 2016. The measurement is performed in the full kinematically allowed range of the decay outside of the D*− region. The ratio of the branching fraction relative to that of the control channel B0 → D*− D0 K+ is measured to be R = (14.2 ± 1.1 ± 1.0)% , where the first uncertainty is statistical and the second is systematic. The absolute branching fraction of B0 → D0 anti-D0 K+ π− decays is thus determined to be B(B0 → D0 anti-D0 K+ π−) = (3.50 ± 0.27 ± 0.26 ± 0.30) × 10^−4, where the third uncertainty is due to the branching fraction of the control channel. This decay mode is expected to provide insights to spectroscopy and the charm-loop contributions in rare semileptonic decays.
2020
Aaij, R., Abellán Beteta, C., Ackernley, T., Adeva, B., Adinolfi, M., Afsharnia, H., et al. (2020). First Observation of the Decay B0 → D0 anti-D0 K+ π−. PHYSICAL REVIEW D, 102(5), 1-11 [10.1103/PhysRevD.102.051102].
Aaij, R.; Abellán Beteta, C.; Ackernley, T.; Adeva, B.; Adinolfi, M.; Afsharnia, H.; Aidala, C.A.; Aiola, S.; Ajaltouni, Z.; Akar, S.; Albrecht, J.; A...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/797433
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