Branching Fractions and CP Asymmetries in B0 -> pi0pi0, B+ -> pi+pi0 and B+ -> K+pi0 Decays and Isospin Analysis of the B -> pipi System
| dc.creator | The BABAR Collaboration | |
| dc.creator | Aubert, B. | |
| dc.date | 2004-12-13 | |
| dc.date.accessioned | 2026-07-07T11:58:00Z | |
| dc.date.available | 2026-07-07T11:58:00Z | |
| dc.description | Based on a sample of 227 million BBbar pairs collected by the BaBar detector at the PEP-II asymmetric-energy B Factory at SLAC, we measure the branching fraction B(B0 -> pi0pi0) = (1.17 +- 0.32 +- 0.10) x 1e-6, and the asymmetry C(pi0pi0) = -0.12 +- 0.56 +- 0.06. The B0 -> pi0pi0 signal has a significance of 5.0 sigma. We also measure B(B+ -> pi+pi0) = (5.8 +- 0.6 +- 0.4) x 1e-6, B(B+ -> K+pi0) = (12.0 +- 0.7 +- 0.6) x 1e-6, and the charge asymmetries A(pi+pi0) = -0.01 +- 0.10 +- 0.02 and A(K+pi0) = 0.06 +- 0.06 +- 0.01. Using isospin relations we find an upper bound on the angle difference |alpha - alpha(eff)| of 35 degrees at the 90% C.L. | |
| dc.description | 7 pages, 3 postscript figures, submitted to Phys. Rev. Lett | |
| dc.identifier | https://arxiv.org/abs/hep-ex/0412037 | |
| dc.identifier | http://arxiv.org/abs/hep-ex/0412037 | |
| dc.identifier | Phys.Rev.Lett.94:181802,2005 | |
| dc.identifier | doi:10.1103/PhysRevLett.94.181802 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/206080 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Branching Fractions and CP Asymmetries in B0 -> pi0pi0, B+ -> pi+pi0 and B+ -> K+pi0 Decays and Isospin Analysis of the B -> pipi System | |
| dc.type | text |