Branching fraction measurements of charmless B0 → K *0h+1 h- 2 (h1,2 = K, π) decays are pre-sented, using a data sample of 383 million σ(4S) → BB decays collected with the BABAR detector at the PEP-II asymmetric-energy B-meson factory at SLAC. The results are: B(B0 → K*0K+K-) = (27.5 ± 1.3 ± 2.2) × 10-6, B(B0 → K z.ast;0+K-) = (4.6 ± 1.1 ± 0.8) × 10-6 and B(B0 → Kz.ast;0+π-) = (54.5 ± 2.9 ± 4.3) × 10-6. The first errors quoted are statistical and the second are systematic. An upper limit is set for B(B0 → Kz.ast;0+π-) < 2.2 × 10-6 at 90% confidence level. We also present measurements of CP-violating asymmetries for the observed decays.
Measurements of the branching fractions of B0→ K *0K+K-, B0→ K*0 π+K-, B0→ K *0K+π-, and B0→ K *0π+ π- / De Nardo, G.; Fabozzi, F.; Lista, L.; Monorchio, D.; Sciacca, C.; Et, Al.. - In: PHYSICAL REVIEW. D. PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-2368. - (2007).
Measurements of the branching fractions of B0→ K *0K+K-, B0→ K*0 π+K-, B0→ K *0K+π-, and B0→ K *0π+ π-
De Nardo G.;Lista L.;Sciacca C.;
2007
Abstract
Branching fraction measurements of charmless B0 → K *0h+1 h- 2 (h1,2 = K, π) decays are pre-sented, using a data sample of 383 million σ(4S) → BB decays collected with the BABAR detector at the PEP-II asymmetric-energy B-meson factory at SLAC. The results are: B(B0 → K*0K+K-) = (27.5 ± 1.3 ± 2.2) × 10-6, B(B0 → K z.ast;0+K-) = (4.6 ± 1.1 ± 0.8) × 10-6 and B(B0 → Kz.ast;0+π-) = (54.5 ± 2.9 ± 4.3) × 10-6. The first errors quoted are statistical and the second are systematic. An upper limit is set for B(B0 → Kz.ast;0+π-) < 2.2 × 10-6 at 90% confidence level. We also present measurements of CP-violating asymmetries for the observed decays.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
