Branching fractions of the decays H_b → H_c π− π+ π− relative to H_b → H_c π− are presented, where H_b (H_c) represents anti-B0 (D+), B− (D0), anti-B0s (Ds+), and Λb0 (Λc+). The measurements are performed with the LHCb detector using 35 pb^−1 of data collected at √s = 7 TeV. The ratios of branching fractions are measured to be [B(anti-B0 → D+ π− π+ π−)]/[B(anti-B0 → D+ π−)] = 2.38 ± 0.11 ± 0.21, [B(B− → D0 π− π+ π−)]/[B(B− → D0 π−)] = 1.27 ± 0.06 ± 0.11, [B(anti-B0s → Ds+ π− π+ π−)]/[B(anti-B0s → Ds+ π−)] = 2.01 ± 0.37 ± 0.20, [B(Λb0 → Λc+ π− π+ π−)]/[B(Λb0 → Λc+ π−)] = 1.43 ± 0.16 ± 0.13. We also report measurements of partial decay rates of these decays to excited charm hadrons. These results are of comparable or higher precision than existing measurements.

R. Aaij, B. Adeva, M. Adinolfi, C. Adrover, A. Affolder, Z. Ajaltouni, et al. (2011). Measurements of the branching fractions for B(s) → D(s) π π π and Λb0 → Λc+ π π π. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 84(9), 1-19 [10.1103/PhysRevD.84.092001].

Measurements of the branching fractions for B(s) → D(s) π π π and Λb0 → Λc+ π π π

CARBONE, ANGELO;GALLI, DOMENICO;PATRIGNANI, CLAUDIA;PERAZZINI, STEFANO;VAGNONI, VINCENZO MARIA;
2011

Abstract

Branching fractions of the decays H_b → H_c π− π+ π− relative to H_b → H_c π− are presented, where H_b (H_c) represents anti-B0 (D+), B− (D0), anti-B0s (Ds+), and Λb0 (Λc+). The measurements are performed with the LHCb detector using 35 pb^−1 of data collected at √s = 7 TeV. The ratios of branching fractions are measured to be [B(anti-B0 → D+ π− π+ π−)]/[B(anti-B0 → D+ π−)] = 2.38 ± 0.11 ± 0.21, [B(B− → D0 π− π+ π−)]/[B(B− → D0 π−)] = 1.27 ± 0.06 ± 0.11, [B(anti-B0s → Ds+ π− π+ π−)]/[B(anti-B0s → Ds+ π−)] = 2.01 ± 0.37 ± 0.20, [B(Λb0 → Λc+ π− π+ π−)]/[B(Λb0 → Λc+ π−)] = 1.43 ± 0.16 ± 0.13. We also report measurements of partial decay rates of these decays to excited charm hadrons. These results are of comparable or higher precision than existing measurements.
2011
R. Aaij, B. Adeva, M. Adinolfi, C. Adrover, A. Affolder, Z. Ajaltouni, et al. (2011). Measurements of the branching fractions for B(s) → D(s) π π π and Λb0 → Λc+ π π π. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 84(9), 1-19 [10.1103/PhysRevD.84.092001].
R. Aaij; B. Adeva; M. Adinolfi; C. Adrover; A. Affolder; Z. Ajaltouni; J. Albrecht; F. Alessio; M. Alexander; G. Alkhazov; P. Alvarez Cartelle; A.A. A...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/106582
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