We present a study of the decays B0,+→J/ψωK0,+ using 383×106 BB̄ events obtained with the BABAR detector at PEP-II. We observe Y(3940)→J/ψω, with mass 3914.6-3.4+3.8(stat)±2. 0(syst)MeV/c2, and width 34-8+12(stat)±5(syst)MeV. The ratio of B0 and B+ decay to YK is 0.27-0.23+0.28(stat)-0.01+0.04(syst), and the relevant B0 and B+ branching fractions are reported.

Aubert, B., Bona, M., Boutigny, D., Karyotakis, Y., Lees, J., Poireau, V., et al. (2008). Observation of Y(3940)→J/ψω in B→J/ψωK at B. PHYSICAL REVIEW LETTERS, 101(8) [10.1103/PhysRevLett.101.082001].

Observation of Y(3940)→J/ψω in B→J/ψωK at B

CARPINELLI, Massimo;
2008

Abstract

We present a study of the decays B0,+→J/ψωK0,+ using 383×106 BB̄ events obtained with the BABAR detector at PEP-II. We observe Y(3940)→J/ψω, with mass 3914.6-3.4+3.8(stat)±2. 0(syst)MeV/c2, and width 34-8+12(stat)±5(syst)MeV. The ratio of B0 and B+ decay to YK is 0.27-0.23+0.28(stat)-0.01+0.04(syst), and the relevant B0 and B+ branching fractions are reported.
Articolo in rivista - Articolo scientifico
Atomic physics; BaBar detector; Branching fractions; Physics;
English
2008
101
8
082001
none
Aubert, B., Bona, M., Boutigny, D., Karyotakis, Y., Lees, J., Poireau, V., et al. (2008). Observation of Y(3940)→J/ψω in B→J/ψωK at B. PHYSICAL REVIEW LETTERS, 101(8) [10.1103/PhysRevLett.101.082001].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/389609
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