Measurement of B(Λc+→pK-π+) Article

Jaffe, DE, Masek, G, Paar, HP et al. (2000). Measurement of B(Λc+→pK-π+) . PHYSICAL REVIEW D, 62(7), 1-18. 10.1103/PhysRevD.62.072005

cited authors

  • Jaffe, DE; Masek, G; Paar, HP; Potter, EM; Prell, S; Sharma, V; Asner, DM; Eppich, A; Gronberg, J; Hill, TS; Lange, DJ; Morrison, RJ; Briere, RA; Behrens, BH; Ford, WT; Gritsan, A; Roy, J; Smith, JG; Alexander, JP; Baker, R; Bebek, C; Berger, BE; Berkelman, K; Blanc, F; Boisvert, V; Cassel, DG; Dickson, M; Drell, PS; Ecklund, KM; Ehrlich, R; Poland, AD; Gaidarev, P; Gibbons, L; Gittelman, B; Gray, SW; Hartill, DL; Heltsley, BK; Hopman, PI; Jones, CD; Kreinick, DL; Lohner, M; Magerkurth, A; Meyer, TO; Mistry, NB; Ng, CR; Nordberg, E; Patterson, JR; Peterson, D; Riley, D; Thayer, JG; Thies, PG; Valant-Spaight, B; Warburton, A; Avery, P; Prescott, C; Rubiera, AI; Yelton, J; Zheng, J; Brandenburg, G; Ershov, A; Gao, YS; Kim, DYJ; Wilson, R; Browder, TE; Li, Y; Rodriguez, JL; Yamamoto, H; Bergfeld, T; Eisenstein, BI; Ernst, J; Gladding, GE; Gollin, GD; Hans, RM; Johnson, E; Karliner, I; Marsh, MA; Palmer, M; Plager, C; Sedlack, C; Selen, M; Thaler, JJ; Williams, J; Edwards, KW; Janicek, R; Patel, PM; Sadoff, AJ; Ammar, R; Baringer, P; Bean, A; Besson, D; Brabant, P; Cervantes, M; Kravchenko, I; Stutz, RP; Zhao, X; Anderson, S; Frolov, VV; Kubota, Y; Lee, SJ; Mahapatra, R

authors

abstract

  • The Λc+→pK-π+ yield has been measured in a sample of two-jet continuum events containing both a charm tag ("D̄") as well as an antiproton (e+e-→D̄p̄X), with the antiproton in the hemisphere opposite the D̄ (measurement of charge conjugate modes is implicit throughout). Under the hypothesis that such selection criteria tag e+e-→D̄p̄Λc+X events, the Λc+→pK-π+ branching fraction can be determined by measuring the pK-π+ yield in the same hemisphere as the antiprotons in our D̄p̄X sample. Three types of D charm tags are used, πsoft- (from D*-→D̄0πsoft-), electrons (from D̄→Xe-v), and fully reconstructed D̄0→K+π- or D- →K+π-π- or Ds-→φπ-. Combining our results obtained from the three independent charm tags, we obtain B(Λc+→pK-π +)=(5.0±0.5±1.2)%. ©2000 The American Physical Society.

publication date

  • October 1, 2000

published in

Digital Object Identifier (DOI)

start page

  • 1

end page

  • 18

volume

  • 62

issue

  • 7