The decays B+ → J/ψ 3π+ 2π− and B+ → ψ(2S) π+ π+ π− are observed for the first time using a data sample corresponding to an integrated luminosity of 3.0 fb^−1, collected by the LHCb experiment in proton–proton collisions at the centre-of-mass energies of 7 and 8 TeV. The branching fractions relative to that of B+ → ψ(2S) K+ are measured to be B(B+ → J/ψ 3π+ 2π−) / B(B+ → ψ(2S) K+) = (1.88 ± 0.17 ± 0.09) × 10^−2, B(B+ → ψ(2S) π+ π+ π−) / B(B+ → ψ(2S) K+) = (3.04 ± 0.50 ± 0.26) × 10^−2, where the first uncertainties are statistical and the second are systematic.

Aaij, R., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., Albrecht, J., et al. (2017). Observation of B+ → J/ψ 3π+ 2π− and B+ → ψ(2S) π+ π+ π− Decays. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 77(2), 1-12 [10.1140/epjc/s10052-017-4610-6].

Observation of B+ → J/ψ 3π+ 2π− and B+ → ψ(2S) π+ π+ π− Decays

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

Abstract

The decays B+ → J/ψ 3π+ 2π− and B+ → ψ(2S) π+ π+ π− are observed for the first time using a data sample corresponding to an integrated luminosity of 3.0 fb^−1, collected by the LHCb experiment in proton–proton collisions at the centre-of-mass energies of 7 and 8 TeV. The branching fractions relative to that of B+ → ψ(2S) K+ are measured to be B(B+ → J/ψ 3π+ 2π−) / B(B+ → ψ(2S) K+) = (1.88 ± 0.17 ± 0.09) × 10^−2, B(B+ → ψ(2S) π+ π+ π−) / B(B+ → ψ(2S) K+) = (3.04 ± 0.50 ± 0.26) × 10^−2, where the first uncertainties are statistical and the second are systematic.
2017
Aaij, R., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., Albrecht, J., et al. (2017). Observation of B+ → J/ψ 3π+ 2π− and B+ → ψ(2S) π+ π+ π− Decays. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 77(2), 1-12 [10.1140/epjc/s10052-017-4610-6].
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/11585/578876
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