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http://hdl.handle.net/2445/130866
Title: | Search for lepton-number violating processes in B+ → h−l+l+ decays |
Author: | Garra Ticó, Jordi Graugés Pous, Eugeni BABAR Collaboration |
Keywords: | Física de partícules Experiments Leptons (Física nuclear) Particle physics Experiments Leptons (Nuclear physics) |
Issue Date: | 19-Apr-2012 |
Publisher: | American Physical Society |
Abstract: | We have searched for the lepton-number violating processes B + → h − ℓ + ℓ + with h − = K − / π − and ℓ + = e + / μ + , using a sample of 471 ± 3 million B ¯¯¯ B events collected with the BABAR detector at the PEP-II e + e − collider at the SLAC National Accelerator Laboratory. We find no evidence for these decays and place 90%-confidence-level upper limits on their branching fractions B ( B + → π − e + e + ) < 2.3 × 10 − 8 , B ( B + → K − e + e + ) < 3.0 × 10 − 8 , B ( B + → π − μ + μ + ) < 10.7 × 10 − 8 , and B ( B + → K − μ + μ + ) < 6.7 × 10 − 8 . |
Note: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevD.85.071103 |
It is part of: | Physical Review D, 2012, vol. 85, num. 7, p. 71103(R) |
URI: | http://hdl.handle.net/2445/130866 |
Related resource: | https://doi.org/10.1103/PhysRevD.85.071103 |
ISSN: | 1550-7998 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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