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

CLAS Collaboration, M. E. McCracken*, M. Bellis, K. P. Adhikari, D. Adikaram, Z. Akbar, S. Anefalos Pereira, R. A. Badui, J. Ball, N. A. Baltzell, M. Battaglieri, V. Batourine, I. Bedlinskiy, A. S. Biselli, S. Boiarinov, W. J. Briscoe, W. K. Brooks, V. D. Burkert, T. Cao, D. S. CarmanA. Celentano, S. Chandavar, G. Charles, L. Colaneri, P. L. Cole, M. Contalbrigo, O. Cortes, V. Crede, A. D'Angelo, N. Dashyan, R. De Vita, E. De Sanctis, A. Deur, C. Djalali, G. E. Dodge, R. Dupre, A. El Alaoui, L. El Fassi, E. Elouadrhiri, P. Eugenio, G. Fedotov, S. Fegan, R. Fersch, A. Filippi, J. A. Fleming, B. Garillon, M. Mayer, D. P. Watts, N. Zachariou, L. Zana, J. Zhang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

We present a search for ten baryon number violating decay modes of. 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 (Lambda -> ml) and conserve either the sum or the difference of baryon and lepton number (B +/- L). The tenth decay mode (Lambda ->(p) over bar pi(+)) represents a difference in baryon number of two units and no difference in lepton number. We observe no significant signal and set upper limits on the branching fractions of these reactions in the range (4-200) x 10(-7) at the 90% confidence level.

Original languageEnglish
Article number072002
Number of pages12
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume92
Issue number7
DOIs
Publication statusPublished - 9 Oct 2015

Keywords

  • OSCILLATIONS

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