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

M. e. Mccracken M. Bellis K. p. Adhikari D. Adikaram Z. Akbar S. Anefalos Pereira R. a. Badui J. Ball 1 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. Carman A. Celentano S. Chandavar G. Charles 2 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 2 A. El Alaoui L. El Fassi E. Elouadrhiri P. Eugenio G. Fedotov S. Fegan R. Fersch A. Filippi J. a. Fleming B. Garillon 2 N. Gevorgyan G. p. Gilfoyle K. l. Giovanetti F. x. Girod 1 E. Golovatch R. w. Gothe K. a. Griffioen M. Guidal 2 L. Guo K. Hafidi H. Hakobyan C. Hanretty M. Hattawy 2 K. Hicks M. Holtrop S. m. Hughes Y. Ilieva D. g. Ireland B. s. Ishkhanov E. l. Isupov D. Jenkins H. Jiang H. s. Jo 2 D. Keller G. Khachatryan M. Khandaker A. Kim W. Kim A. Klein F. j. Klein V. Kubarovsky P. Lenisa K. Livingston H. y. Lu I. j. d. Macgregor M. Mayer B. Mckinnon M. d. Mestayer C. a. Meyer M. Mirazita V. Mokeev C. i. Moody K. Moriya C. Munoz Camacho P. Nadel-Turonski L. a. Net S. Niccolai 2 M. Osipenko A. i. Ostrovidov K. Park E. Pasyuk S. Pisano O. Pogorelko J. w. Price S. Procureur 1 Y. Prok B. a. Raue M. Ripani A. Rizzo G. Rosner P. Roy F. Sabatié 1 C. Salgado R. a. Schumacher E. Seder Y. g. Sharabian Iu. Skorodumina D. Sokhan N. Sparveris P. Stoler I. i. Strakovsky S. Strauch V. Sytnik Ye Tian M. Ungaro H. Voskanyan E. Voutier 2 N. k. Walford D. p. Watts X. Wei M. h. Wood N. Zachariou L. Zana J. Zhang Z. w. Zhao I. Zonta
Abstract : 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→mℓ) and conserve either the sum or the difference of baryon and lepton number (B±L). The tenth decay mode (Λ→p¯π+) 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)×10−7 at the 90% confidence level.
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Physical Review D, American Physical Society, 2015, 92 (7), pp.072002. 〈10.1103/PhysRevD.92.072002〉
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Soumis le : mardi 2 février 2016 - 17:28:10
Dernière modification le : mercredi 31 janvier 2018 - 12:12:38

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M. e. Mccracken, M. Bellis, K. p. Adhikari, D. Adikaram, Z. Akbar, et al.. Search for baryon-number and lepton-number violating decays of Λ hyperons using the CLAS detector at Jefferson Laboratory. Physical Review D, American Physical Society, 2015, 92 (7), pp.072002. 〈10.1103/PhysRevD.92.072002〉. 〈in2p3-01266460〉

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