Measurement of B(<inf>c</inf>+pK-+)

The c+pK-+ yield has been measured in a sample of two-jet continuum events containing both a charm tag ("D") as well as an antiproton (e+e-DpX), with the antiproton in the hemisphere opposite the D (measurement of charge conjugate modes is implicit throughout). Under the hypothesis that such selection criteria tag e+e-Dpc+X events, the c+pK-+ branching fraction can be determined by measuring the pK-+ yield in the same hemisphere as the antiprotons in our DpX sample. Three types of D charm tags are used, soft- (from D*-D0soft-), electrons (from DXe-v), and fully reconstructed D0K+- or D- K+-- or Ds--. Combining our results obtained from the three independent charm tags, we obtain B(c+pK- +)=(5.00.51.2)%. 2000 The American Physical Society.

Jaffe, D. E., Masek, G., Paar, H. P., Potter, E. M., Prell, S., Sharma, V., ... Mahapatra, R.

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||A

Measurement of B(c⁺pK^-⁺) Academic Article