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Searches for the baryon- and lepton-number violating decays B0→Λ+cl−, B−→Λl−, and B−→¯¯¯Λl−
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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.
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GARRA TICÓ, Jordi, GRAUGÉS POUS, Eugeni and BABAR Collaboration. Searches for the baryon- and lepton-number violating decays B0→Λ+cl−, B−→Λl−, and B−→¯¯¯Λl−. Physical Review D. 2011. Vol. 83, num. 9, pags. 091101. ISSN 1550-7998. [consulted: 8 of October of 2026]. Available at: https://hdl.handle.net/2445/131751