We present results for B-meson decay modes involving a charm meson, protons, and pions using 455×106 BB⎯⎯⎯ pairs recorded by the BaBar detector at the SLAC PEP-II asymmetric-energy e+e− collider. The branching fractions are measured for the following ten decays: B⎯⎯⎯0→D0pp⎯⎯, B⎯⎯⎯0→D*0pp⎯⎯, B⎯⎯⎯0→D+pp⎯⎯π−, B⎯⎯⎯0→D*+pp⎯⎯π−, B−→D0pp⎯⎯π−, B−→D*0pp⎯⎯π−, B⎯⎯⎯0→D0pp⎯⎯π−π+, B⎯⎯⎯0→D*0pp⎯⎯π−π+, B−→D+pp⎯⎯π−π−, and B−→D*+pp⎯⎯π−π−. The four B− and the two five-body B⎯⎯⎯0 modes are observed for the first time. The four-body modes are enhanced compared to the three- and the five-body modes. In the three-body modes, the M(pp⎯⎯) and M(D(*)0p) invariant-mass distributions show enhancements near threshold values. In the four-body mode B⎯⎯⎯0→D+pp⎯⎯π−, the M(pπ−) distribution shows a narrow structure of unknown origin near 1.5  GeV/c2. The distributions for the five-body modes, in contrast to the others, are similar to the expectations from uniform phase-space predictions.

Sanchez, P.D.A., Lees, J.P., Poireau, V., Prencipe, E., Tisserand, V., Tico, J.G., et al. (2012). Observation and study of the baryonic B-meson decays B -> D(*) p(p)over-bar (pi)(pi). PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 85(9), 1-21 [10.1103/PhysRevD.85.092017].

Observation and study of the baryonic B-meson decays B -> D(*) p(p)over-bar (pi)(pi)

PATRIGNANI, CLAUDIA;
2012

Abstract

We present results for B-meson decay modes involving a charm meson, protons, and pions using 455×106 BB⎯⎯⎯ pairs recorded by the BaBar detector at the SLAC PEP-II asymmetric-energy e+e− collider. The branching fractions are measured for the following ten decays: B⎯⎯⎯0→D0pp⎯⎯, B⎯⎯⎯0→D*0pp⎯⎯, B⎯⎯⎯0→D+pp⎯⎯π−, B⎯⎯⎯0→D*+pp⎯⎯π−, B−→D0pp⎯⎯π−, B−→D*0pp⎯⎯π−, B⎯⎯⎯0→D0pp⎯⎯π−π+, B⎯⎯⎯0→D*0pp⎯⎯π−π+, B−→D+pp⎯⎯π−π−, and B−→D*+pp⎯⎯π−π−. The four B− and the two five-body B⎯⎯⎯0 modes are observed for the first time. The four-body modes are enhanced compared to the three- and the five-body modes. In the three-body modes, the M(pp⎯⎯) and M(D(*)0p) invariant-mass distributions show enhancements near threshold values. In the four-body mode B⎯⎯⎯0→D+pp⎯⎯π−, the M(pπ−) distribution shows a narrow structure of unknown origin near 1.5  GeV/c2. The distributions for the five-body modes, in contrast to the others, are similar to the expectations from uniform phase-space predictions.
2012
Sanchez, P.D.A., Lees, J.P., Poireau, V., Prencipe, E., Tisserand, V., Tico, J.G., et al. (2012). Observation and study of the baryonic B-meson decays B -> D(*) p(p)over-bar (pi)(pi). PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 85(9), 1-21 [10.1103/PhysRevD.85.092017].
Sanchez, P. Del Amo; Lees, J. P.; Poireau, V.; Prencipe, E.; Tisserand, V.; Tico, J. Garra; Grauges, E.; Martinelli, M.; Palano, A.; Pappagallo, M.; E...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/537428
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