Branching Fraction Measurements of B ->etac K Decays
| dc.creator | The BABAR Collaboration | |
| dc.creator | Aubert, B. | |
| dc.date | 2004-03-02 | |
| dc.date.accessioned | 2026-07-07T11:57:49Z | |
| dc.date.available | 2026-07-07T11:57:49Z | |
| dc.description | We study the decays B+ -> etac K+ and B0 -> etac K0, where the etac is reconstructed in the Ks K+ pi- and K+ K- pi0 decay modes. Results are based on a sample of 86 million BBbar pairs collected with the BaBar detector at the SLAC e+e- B Factory. We measure the branching fractions BR(B+ -> etac K+) = (1.34 +/- 0.09 +/- 0.13 +/- 0.41) x 10^{-3} and BR(B0 -> etac K0) = (1.18 +/- 0.16 +/- 0.13 +/- 0.37) x 10^{-3}, where the first error is statistical, the second is systematic, and the third reflects the etac branching fraction uncertainty. In addition, we search for B -> etac K events with etac -> 2(K+K-) and etac -> phi phi and determine the etac decay branching fraction ratios BR(etac -> 2(K+K-))/BR(etac -> K Kbar pi) = (2.3 +/- 0.7 +/- 0.6) x 10^{-2} and BR(etac -> phi phi)/BR(etac -> K Kbar pi) = (5.5 +/- 1.4 +/- 0.5) x 10^{-2}. | |
| dc.description | 8 pages, 8 postscript figures | |
| dc.identifier | https://arxiv.org/abs/hep-ex/0403007 | |
| dc.identifier | http://arxiv.org/abs/hep-ex/0403007 | |
| dc.identifier | Phys.Rev.D70:011101,2004 | |
| dc.identifier | doi:10.1103/PhysRevD.70.011101 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/206013 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Branching Fraction Measurements of B ->etac K Decays | |
| dc.type | text |