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Searches for the baryon- and lepton-number violating decays B0→Λ+cl−, B−→Λl−, and B−→¯¯¯Λl− Garra Ticó, Jordi Graugés Pous, Eugeni BABAR Collaboration Física de partícules Experiments Particle physics Experiments Searches for B mesons decaying to final states containing a baryon and a lepton are performed, where the baryon is either Λ c or Λ and the lepton is a muon or an electron. These decays violate both baryon and lepton number and would be a signature of physics beyond the standard model. No significant signal is observed in any of the decay modes, and upper limits in the range ( 3.2 - 520 ) × 10 − 8 are set on the branching fractions at the 90% confidence level. 2019-04-08T10:38:31Z 2019-04-08T10:38:31Z 2011-05-13 2019-04-08T10:38:31Z info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 1550-7998 https://hdl.handle.net/2445/131751 602006 eng Reproducció del document publicat a: https://doi.org/10.1103/PhysRevD.83.091101 Physical Review D, 2011, vol. 83, num. 9, p. 091101 https://doi.org/10.1103/PhysRevD.83.091101 (c) American Physical Society, 2011 info:eu-repo/semantics/openAccess 8 p. application/pdf American Physical Society Articles publicats en revistes (Física Quàntica i Astrofísica)