A search for the decay B0s → D*∓ π± is presented using a data sample corresponding to an integrated luminosity of 1.0 fb^−1 of pp collisions collected by LHCb. This decay is expected to be mediated by a W-exchange diagram, with little contribution from rescattering processes, and therefore a measurement of the branching fraction will help us to understand the mechanism behind related decays such as B0s → π+ π− and B0s → D antiD. Systematic uncertainties are minimized by using B0 → D*∓ π± as a normalization channel. We find no evidence for a signal, and set an upper limit on the branching fraction of B(B0s → D*∓ π±) < 6.1(7.8) x 10^−6 at 90% (95%) confidence level.

Aaij, R., Abellan Beteta, C., Adeva, B., Adinolfi, M., Adrover, C., Affolder, A., et al. (2013). Search for the Decay B0s → D*∓ π±. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 87(7), 1-8 [10.1103/PhysRevD.87.071101].

Search for the Decay B0s → D*∓ π±

CARBONE, ANGELO;A. Di Canto;GALLI, DOMENICO;PATRIGNANI, CLAUDIA;PERAZZINI, STEFANO;VAGNONI, VINCENZO MARIA;ZANGOLI, MARIA;
2013

Abstract

A search for the decay B0s → D*∓ π± is presented using a data sample corresponding to an integrated luminosity of 1.0 fb^−1 of pp collisions collected by LHCb. This decay is expected to be mediated by a W-exchange diagram, with little contribution from rescattering processes, and therefore a measurement of the branching fraction will help us to understand the mechanism behind related decays such as B0s → π+ π− and B0s → D antiD. Systematic uncertainties are minimized by using B0 → D*∓ π± as a normalization channel. We find no evidence for a signal, and set an upper limit on the branching fraction of B(B0s → D*∓ π±) < 6.1(7.8) x 10^−6 at 90% (95%) confidence level.
2013
Aaij, R., Abellan Beteta, C., Adeva, B., Adinolfi, M., Adrover, C., Affolder, A., et al. (2013). Search for the Decay B0s → D*∓ π±. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 87(7), 1-8 [10.1103/PhysRevD.87.071101].
Aaij, R.; Abellan Beteta, C.; Adeva, B.; Adinolfi, M.; Adrover, C.; Affolder, A.; Ajaltouni, Z.; Albrecht, J.; Alessio, F.; Alexander, M.; Ali, S.; Al...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/136192
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