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

McCracken, Michael E.

doi:10.1103/PhysRevD.92.072002

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

Journal Article · Fri Oct 09 00:00:00 EDT 2015 · Physical Review. D, Particles, Fields, Gravitation and Cosmology

DOI:https://doi.org/10.1103/PhysRevD.92.072002· OSTI ID:1222995

McCracken, Michael E. ^[1]

Washington & Jefferson College, Washington, PA (United States); Carnegie Mellon Univ., Pittsburgh, PA (United States). et al.

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.

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Research Organization:: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP)

Contributing Organization:: CLAS Collaboration

Grant/Contract Number:: AC05-84ER40150; FG02-87ER40315

OSTI ID:: 1222995

Alternate ID(s):: OSTI ID: 1223339

Report Number(s):: JLAB-PHY-15-2113; DOE/OR/23177-3478; arXiv:1507.03859; FG02-87ER40315

Journal Information:: Physical Review. D, Particles, Fields, Gravitation and Cosmology, Vol. 92, Issue 07; Related Information: JLab experiment number: E04-021; ISSN 1550-7998

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 12 works

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