Measurement of B(Λc +→pK-π+)

D. E. Jaffe, G. Masek, H. P. Paar, E. M. Potter, S. Prell, V. Sharma, D. M. Asner, A. Eppich, J. Gronberg, T. S. Hill, D. J. Lange, R. J. Morrison, R. A. Briere, B. H. Behrens, W. T. Ford, A. Gritsan, J. Roy, J. G. Smith, J. P. Alexander, R. BakerC. Bebek, B. E. Berger, K. Berkelman, F. Blanc, V. Boisvert, D. G. Cassel, M. Dickson, P. S. Drell, K. M. Ecklund, R. Ehrlich, A. D. Poland, P. Gaidarev, L. Gibbons, B. Gittelman, S. W. Gray, D. L. Hartill, B. K. Heltsley, P. I. Hopman, C. D. Jones, D. L. Kreinick, M. Lohner, A. Magerkurth, T. O. Meyer, N. B. Mistry, C. R. Ng, E. Nordberg, J. R. Patterson, D. Peterson, D. Riley, J. G. Thayer, P. G. Thies, B. Valant-Spaight, A. Warburton, P. Avery, C. Prescott, A. I. Rubiera, J. Yelton, J. Zheng, G. Brandenburg, A. Ershov, Y. S. Gao, D. Y J Kim, R. Wilson, T. E. Browder, Y. Li, J. L. Rodriguez, H. Yamamoto, T. Bergfeld, B. I. Eisenstein, J. Ernst, G. E. Gladding, G. D. Gollin, R. M. Hans, E. Johnson, I. Karliner, M. A. Marsh, M. Palmer, C. Plager, C. Sedlack, M. Selen, J. J. Thaler, J. Williams, K. W. Edwards, R. Janicek, P. M. Patel, A. J. Sadoff, R. Ammar, P. Baringer, A. Bean, D. Besson, P. Brabant, M. Cervantes, I. Kravchenko, R. P. Stutz, X. Zhao, S. Anderson, V. V. Frolov, Y. Kubota, S. J. Lee, R. Mahapatra, J. J. O'Neill, R. Poling, T. Riehle, A. Smith, J. Urheim, S. Ahmed, M. S. Alam, S. B. Athar, L. Jian, L. Ling, A. H. Mahmood, M. Saleem, S. Timm, F. Wappler, A. Anastassov, J. E. Duboscq, K. K. Gan, C. Gwon, T. Hart, K. Honscheid, D. Hufnagel, H. Kagan, R. Kass, J. Lorenc, T. K. Pedlar, H. Schwarthoff, E. Von Toerne, M. M. Zoeller, S. J. Richichi, H. Severini, P. Skubic, A. Undrus, S. Chen, J. Fast, J. W. Hinson, J. Lee, N. Menon, D. H. Miller, E. I. Shibata, I. P J Shipsey, V. Pavlunin, D. Cronin-Hennessy, Y. Kwon, A. L. Lyon, E. H. Thorndike, C. P. Jessop, H. Marsiske, M. L. Perl, V. Savinov, D. Ugolini, X. Zhou, T. E. Coan, V. Fadeyev, I. Korolkov, Y. Maravin, I. Narsky, R. Stroynowski, J. Ye, T. Wlodek, Marina Artuso, R. Ayad, C. Boulahouache, K. Bukin, E. Dambasuren, S. Karamov, S. Kopp, G. Majumder, G. C. Moneti, R. Mountain, S. Schuh, Tomasz Skwarnicki, Sheldon Stone, G. Viehhauser, J. C. Wang, A. Wolf, J. Wu, S. E. Csorna, I. Danko, K. W. McLean, Sz Márka, Z. Xu, R. Godang, K. Kinoshita, I. C. Lai, S. Schrenk, G. Bonvicini, D. Cinabro, L. P. Perera, G. J. Zhou, G. Eigen, E. Lipeles, M. Schmidtler, A. Shapiro, W. M. Sun, A. J. Weinstein, F. Würthwein

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15 Scopus citations

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)%.

Original languageEnglish (US)
Article number072005
Pages (from-to)1-18
Number of pages18
JournalPhysical Review D
Volume62
Issue number7
StatePublished - Oct 1 2000

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ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Nuclear and High Energy Physics
  • Mathematical Physics
  • Physics and Astronomy (miscellaneous)

Cite this

Jaffe, D. E., Masek, G., Paar, H. P., Potter, E. M., Prell, S., Sharma, V., Asner, D. M., Eppich, A., Gronberg, J., Hill, T. S., Lange, D. J., Morrison, R. J., Briere, R. A., Behrens, B. H., Ford, W. T., Gritsan, A., Roy, J., Smith, J. G., Alexander, J. P., ... Würthwein, F. (2000). Measurement of B(Λc +→pK-π+). Physical Review D, 62(7), 1-18. [072005].