Measurement of the product branching fraction B(c→ΘcX)XB(Θc→ΛX) Article

Ammar, R, Baringer, P, Brabant, P et al. (2000). Measurement of the product branching fraction B(c→ΘcX)XB(Θc→ΛX) . PHYSICAL REVIEW D, 62(9), 1-12. 10.1103/PhysRevD.62.092007

cited authors

  • Ammar, R; Baringer, P; Brabant, P; Bean, A; Besson, D; Bull, H; Davis, R; Holliday, J; Kotov, S; Kravchenko, I; Kwak, N; Robertson, I; Stutz, R; Zhao, X; Anderson, S; Frolov, VV; Kubota, Y; Lee, SJ; Mahapatra, R; O'Neill, JJ; Poling, R; Riehle, T; Smith, A; Ahmed, S; Alam, MS; Athar, SB; Jian, L; Ling, L; Mahmood, AH; Saleem, M; Timm, S; Wappler, F; Anastassov, A; Duboscq, JE; Gan, KK; Gwon, C; Hart, T; Honscheid, K; Kagan, H; Kass, R; Lorenc, J; Schwarthoff, H; Von Toerne, E; Zoeller, MM; Richichi, SJ; Severini, H; Skubic, P; Undrus, A; Bishai, M; Chen, S; Fast, J; Hinson, JW; Lee, J; Menon, N; Miller, DH; Shibata, EI; Shipsey, IPJ; Kwon, Y; Lyon, AL; Thorndike, EH; Jessop, CP; Lingel, K; Marsiske, H; Perl, ML; Savinov, V; Ugolini, D; Zhou, X; Coan, TE; Fadeyev, V; Korolkov, I; Maravin, Y; Narsky, I; Stroynovvski, R; Ye, J; Wlodek, T; Artuso, M; Ayad, R; Dambasuren, E; Kopp, S; Majumder, G; Moneti, GC; Mountain, R; Schuh, S; Skwarnicki, T; Stone, S; Titov, A; Viehhauser, G; Wang, JC; Wolf, A; Wu, J; Csorna, SE; McLean, KW; Marka, S; Xu, Z; Godang, R; Kinoshita, K; Lai, IC; Pomianowski, P; Schrenk, S; Bonvicini, G

authors

abstract

  • Based on a high statistics e+e-→cc̄ data sample, we report on the inclusive rate for charmed baryons to decay into Λ particles using charm-event tagging. We select e+e-→cc̄ events which have a clear anti-charm tag and measure the Λ content in the hemisphere opposite the tag (charge conjugate modes are implicit). This allows us to determine the product branching fraction BΛ=B(c→ΘcX)XB(Θ c→ΛX), where Θc represents a sum over all charmed baryons produced in e+e- fragmentation at √s=10.5 GeV, given our specific tags. We obtain BΛ=(1.87±0.03±0.33)%. ©2000 The American Physical Society.

publication date

  • November 1, 2000

published in

Digital Object Identifier (DOI)

start page

  • 1

end page

  • 12

volume

  • 62

issue

  • 9