Measurement of B(Lambda(+)(c)-> pK(-)pi(+)) - art. no. 072005

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 Foland, 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 O'Neill, JJ Poling, R Riehle, T Smith, A Urheim, J 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 Hufnagel, D Kagan, H Kass, R Lorenc, J Pedlar, TK Schwarthoff, H von Toerne, E Zoeller, MM Richichi, SJ Severini, H Skubic, P Undrus, A Chen, S Fast, J Hinson, JW Lee, J Menon, N Miller, DH Shibata, EI Shipsey, IPJ Pavlunin, V Cronin-Hennessy, D Kwon, Y Lyon, AL Thorndike, EH Jessop, CP Marsiske, H Perl, ML Savinov, V Ugolini, D Zhou, X Coan, TE Fadeyev, V Korolkov, I Maravin, Y Narsky, I Stroynowski, R Ye, J Wlodek, T Artuso, M Ayad, R Boulahouache, C Bukin, K Dambasuren, E Karamov, S Kopp, S Majumder, G Moneti, GC Mountain, R Schuh, S Skwarnicki, T Stone, S Viehhauser, G Wang, JC Wolf, A Wu, J Csorna, SE Danko, I McLean, KW Marka, S Xu, Z Godang, R Kinoshita, K Lai, IC Schrenk, S Bonvicini, G Cinabro, D Perera, LP Zhou, GJ Eigen, G Lipeles, E Schmidtler, M Shapiro, A Sun, WM Weinstein, AJ Wurthwein, F
Citation
De. Jaffe et al., Measurement of B(Lambda(+)(c)-> pK(-)pi(+)) - art. no. 072005, PHYS REV D, 6207(7), 2000, pp. 2005
Citations number
21
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW D
ISSN journal
0556-2821 → ACNP
Volume
6207
Issue
7
Year of publication
2000
Database
ISI
SICI code
0556-2821(20001001)6207:7<2005:MOBP-A>2.0.ZU;2-I
Abstract
The Lambda(c)(+)-->pK(-)pi(+) yield has been measured in a sample of two-je t continuum events containing both a charm tag ("(D) over bar") as well as an antiproton (e(+)e(-) --> (D) over bar (p) over bar X), with the antiprot on in the hemisphere opposite the (D) over bar (measurement of charge conju gate modes is implicit throughout). Under the hypothesis that such selectio n criteria tag e(+)e(-)-->(D) over bar (p) over bar Lambda(c)(+)X events, t he Lambda(c)(+)-->pK(-)pi(+) branching fraction can be determined by measur ing the pK(-)pi(+) yield in the same hemisphere as the antiprotons in our ( D) over bar (p) over bar X sample. Three types of (D) over bar charm tags a re used, pi(soft)(-) (from D*- --> (D) over bar(o) pi(soft)(-) electrons (f rom (D) over bar-->Xe- nu), and fully reconstructed (D) over bar(o) --> Kpi(-) or D- -->K+ pi(-)pi(-) or D-s(-) --> phi pi(-). Combining our results obtained from the three independent charm tags, we obtain B(Lambda(c)(+) - -> pK(-) pi(+)) = (5.0 +/- 0.5 +/- 1.2)%.