We present a study of the decays B0,+→J/ ψπ+π-π0K0,+, using 467×106 BB̄ pairs recorded with the BABAR detector. We present evidence for the decay mode X(3872)→J/ψω, with product branching fractions B(B+→X(3872)K+)×B(X(3872)→J/ ψω)=[0.6±0.2(stat)±0.1(syst)]×10-5, and B(B0→X(3872)K0)×B(X(3872)→J/ψω)=[0.6±0.3(stat) ±0.1(syst)]×10-5. A detailed study of the π+π-π0 mass distribution from X(3872) decay favors a negative-parity assignment.

Sanchez, P., Lees, J., Poireau, V., Prencipe, E., Tisserand, V., Tico, J., et al. (2010). Evidence for the decay X(3872)→J/ψω. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 82(1) [10.1103/PhysRevD.82.011101].

Evidence for the decay X(3872)→J/ψω

CARPINELLI, Massimo
Membro del Collaboration Group
;
2010

Abstract

We present a study of the decays B0,+→J/ ψπ+π-π0K0,+, using 467×106 BB̄ pairs recorded with the BABAR detector. We present evidence for the decay mode X(3872)→J/ψω, with product branching fractions B(B+→X(3872)K+)×B(X(3872)→J/ ψω)=[0.6±0.2(stat)±0.1(syst)]×10-5, and B(B0→X(3872)K0)×B(X(3872)→J/ψω)=[0.6±0.3(stat) ±0.1(syst)]×10-5. A detailed study of the π+π-π0 mass distribution from X(3872) decay favors a negative-parity assignment.
Articolo in rivista - Articolo scientifico
BABAR detector
English
Carpinelli Massimo (The BABAR Collaboration)
Sanchez, P., Lees, J., Poireau, V., Prencipe, E., Tisserand, V., Tico, J., et al. (2010). Evidence for the decay X(3872)→J/ψω. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 82(1) [10.1103/PhysRevD.82.011101].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/389340
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