Search for D0→p¯e+ and D0→pe-

P. Rubin,N. Lowrey,S. Mehrabyan,M. Selen,J. Wiss,R. Mitchell,M. Shepherd,D. Besson,T. Pedlar,D. Cronin-Hennessy,K. Gao,J. Hietala,Y. Kubota,T. Klein,R. Poling,A. Scott,P. Zweber,S. Dobbs,Z. Metreveli,K. Seth,B. Tan,A. Tomaradze,J. Libby,L. Martin,A. Powell,G. Wilkinson,H. Mendez,J. Ge,D. Miller,I. Shipsey,B. Xin,G. Adams,D. Hu,B. Moziak,J. Napolitano,K. Ecklund,Q. He,J. Insler,H. Muramatsu,C. Park,E. Thorndike,F. Yang,M. Artuso,S. Blusk,S. Khalil,J. Li,R. Mountain,K. Randrianarivony,N. Sultana,T. Skwarnicki,S. Stone,J. Wang,L. Zhang,G. Bonvicini,D. Cinabro,M. Dubrovin,A. Lincoln,M. Smith,P. Zhou,J. Zhu,P. Naik,J. Rademacker,D. Asner,K. Edwards,J. Reed,A. Robichaud,G. Tatishvili,E. White,R. Briere,H. Vogel,P. Onyisi,J. Rosner,J. Alexander,D. Cassel,J. Duboscq,R. Ehrlich,L. Fields,L. Gibbons,R. Gray,S. Gray,D. Hartill,B. Heltsley,D. Hertz,J. Hunt,J. Kandaswamy,D. Kreinick,V. Kuznetsov,J. Ledoux,H. Mahlke-Krüger,J. Patterson,D. Peterson,D. Riley,A. Ryd,A. Sadoff,X. Shi,S. Stroiney,W. Sun,T. Wilksen,J. Yelton

PHYSICAL REVIEW D（2009）

引用 16|浏览92

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摘要

We search for simultaneous baryon and lepton number violating decays of the D-0 meson. Specifically, we use 281 pb(-1) of data taken on the psi(3770) resonance with the CLEO-c detector at the CESR collider to look for decays D-0 -> (p) over bare(+), (D) over bar (0) -> pe(-) , and (D) over bar (0) -> pe(-). We find no significant signals and set the following branching fraction upper limits: D-0 -> (p) over bare(+) + ((D) over bar (0) -> (p) over bare(+)) < 1.1 x 10(-5) and D-0 -> pe(-)((D) over bar (0) -> pe(-)) < 1.0 x 10(-5), both at the 90% confidence level.

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