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Title: Search for baryon-number and lepton-number violating decays of Λ hyperons using the CLAS detector at Jefferson Laboratory

We present a search for ten baryon-number violating decay modes of Λ hyperons using the CLAS detector at Jefferson Laboratory. Nine of these decay modes result in a single meson and single lepton in the final state (Λ → mΙ) and conserve either the sum or the difference of baryon and lepton number (Β ± L). The tenth decay mode (Λ → p¯π+) represents a difference in baryon number of two units and no difference in lepton number. Furthermore, we observe no significant signal and set upper limits on the branching fractions of these reactions in the range (4 – 200) x 107 at the 90% confidence level.
  1. Washington & Jefferson College, Washington, PA (United States); Carnegie Mellon Univ., Pittsburgh, PA (United States). et al.
Publication Date:
OSTI Identifier:
Report Number(s):
JLAB-PHY--15-2113; DOE/OR/23177--3478; arXiv:1507.03859
Journal ID: ISSN 1550-7998; FG02-87ER40315
Grant/Contract Number:
Accepted Manuscript
Journal Name:
Physical Review. D, Particles, Fields, Gravitation and Cosmology
Additional Journal Information:
Journal Volume: 92; Journal Issue: 07; Related Information: JLab experiment number: E04-021; Journal ID: ISSN 1550-7998
American Physical Society (APS)
Research Org:
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Sponsoring Org:
USDOE Office of Energy Research (ER); USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Contributing Orgs:
CLAS Collaboration
Country of Publication:
United States