With a sample of 232×106 Υ(4S)→BB̄ events collected with the BABAR detector, we study the decays of B mesons to pp̄h final states, where h=π+, KS0, K*0, or K*+. We report evidence for the B0→pp̄K*0 decay, with a branching fraction (1.47±0. 45(stat)±0.40(syst))×10-6, and for the B+→ηcK*+ decay, with the branching fraction of B(B+→ηcK*+) ×B(ηc→pp̄)=(1.57-0.45+0.56(stat)-0.36+0.46(syst)) ×10-6, and provide improved measurements of the branching fractions of the other modes of this type. We also report the measurements of the charge asymmetry consistent with zero in the B+→pp̄π+, B0→pp̄K*0, and B+→pp̄K*+ modes. No evidence is found for the pentaquark candidate Θ+ in the mass range 1.52 to 1.55GeV/c2, decaying into pKS0, or the glueball candidate fJ(2220) in the mass range 2.2<mpp̄<2.4GeV/c2, and branching fraction limits are established for both at the 10-7 level. © 2007 The American Physical Society.

Aubert, B., Bona, M., Boutigny, D., Karyotakis, Y., Lees, J., Poireau, V., et al. (2007). Evidence for the B0→pp̄K*0 and B+→ηcK*+ decays and study of the decay dynamics of B meson decays into pp̄h final states. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 76(9), 1-18 [10.1103/PhysRevD.76.092004].

Evidence for the B0→pp̄K*0 and B+→ηcK*+ decays and study of the decay dynamics of B meson decays into pp̄h final states

PATRIGNANI, CLAUDIA;
2007

Abstract

With a sample of 232×106 Υ(4S)→BB̄ events collected with the BABAR detector, we study the decays of B mesons to pp̄h final states, where h=π+, KS0, K*0, or K*+. We report evidence for the B0→pp̄K*0 decay, with a branching fraction (1.47±0. 45(stat)±0.40(syst))×10-6, and for the B+→ηcK*+ decay, with the branching fraction of B(B+→ηcK*+) ×B(ηc→pp̄)=(1.57-0.45+0.56(stat)-0.36+0.46(syst)) ×10-6, and provide improved measurements of the branching fractions of the other modes of this type. We also report the measurements of the charge asymmetry consistent with zero in the B+→pp̄π+, B0→pp̄K*0, and B+→pp̄K*+ modes. No evidence is found for the pentaquark candidate Θ+ in the mass range 1.52 to 1.55GeV/c2, decaying into pKS0, or the glueball candidate fJ(2220) in the mass range 2.2
2007
Aubert, B., Bona, M., Boutigny, D., Karyotakis, Y., Lees, J., Poireau, V., et al. (2007). Evidence for the B0→pp̄K*0 and B+→ηcK*+ decays and study of the decay dynamics of B meson decays into pp̄h final states. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 76(9), 1-18 [10.1103/PhysRevD.76.092004].
Aubert, B; Bona, M.; Boutigny, D.; Karyotakis, Y.; Lees, J.P.; Poireau, V.; Prudent, X.; Tisserand, V.; Zghiche, A.; Garra Tico, J.; Grauges, E.; Lope...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/551204
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