First Observation of Inclusive {ital B} Decays to the Charmed Strange Baryons {Xi}{sup 0}{sub {ital c}} and {Xi}{sup +}{sub {ital c}}

Journal Article · Sat Nov 01 00:00:00 EST 1997 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.79.3599· OSTI ID:628713

Barish, B; Chadha, M; Chan, S; Eigen, G; Miller, J S; OGrady, C; Schmidtler, M; Urheim, J; Weinstein, A J; Wuerthwein, F ^[1]; Asner, D M; Bliss, D W; Brower, W S; Masek, G; Paar, H P; Prell, S; Sharma, V ^[2]; Gronberg, J; Hill, T S; Kutschke, R ; Lange, D J; Menary, S; Morrison, R J; Nelson, H N; Nelson, T K; Qiao, C; Richman, J D; Roberts, D; Ryd, A; Witherell, M S ^[3]; Balest, R; Behrens, B H; Cho, K; Ford, W T; Park, H; Rankin, P; Roy, J; Smith, J G ^[4]; Alexander, J P; Bebek, C; Berger, B E; Berkelman, K; Bloom, K; Cassel, D G; Cho, H A; Coffman, D M; Crowcroft, D S; Dickson, M; Drell, P S; Ecklund, K M; Ehrlich, R; Elia, R; Foland, A D; Gaidarev, P; Gittelman, B; Gray, S W; Hartill, D L; Heltsley, B K; Hopman, P I; Kandaswamy, J; Kim, P C; Kreinick, D L; Lee, T; Liu, Y; Ludwig, G S; Masui, J; Mevissen, J; Mistry, N B; Ng, C R; Nordberg, E; Ogg, M; Patterson, J R; Peterson, D; Riley, D; Soffer, A; Valant-Spaight, B; Ward, C ^[5]; Athanas, M; Avery, P; Jones, C D; Lohner, M; Prescott, C; Yelton, J; Zheng, J ^[6]; Brandenburg, G; Briere, R A; Gao, Y S; Kim, D Y; Wilson, R; Yamamoto, H ^[7]; Browder, T E; Li, F; Li, Y; Rodriguez, J L ^[8]; Bergfeld, T; Eisenstein, B I; Ernst, J; Gladding, G E; Gollin, G D; Hans, R M; Johnson, E; Karliner, I; Marsh, M A; Palmer, M; Selen, M; Thaler, J J; others, and

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1. California Institute of Technology, Pasadena, California 91125 (United States)
2. University of California, San Diego, La Jolla, California 92093 (United States)
3. University of California, Santa Barbara, California 93106 (United States)
4. University of Colorado, Boulder, Colorado 80309-0390 (United States)
5. Cornell University, Ithaca, New York 14853 (United States)
6. University of Florida, Gainesville, Florida 32611 (United States)
7. Harvard University, Cambridge, Massachusetts 02138 (United States)
8. University of Hawaii at Manoa, Honolulu, Hawaii 96822 (United States)

Using data collected in the region of the {Upsilon}(4S) resonance with the CLEO II detector operating at the Cornell Electron Storage Ring (CESR), we present the first observation of B mesons decaying into the charmed strange baryons {Xi}{sup 0}{sub c} and {Xi}{sup +}{sub c} . We find 79{plus_minus}27 {Xi}{sup 0}{sub c} and 125{plus_minus}28 {Xi}{sup +}{sub c} candidates from B decays, leading to product branching fractions of B({bar B}{r_arrow}{Xi}{sup 0}{sub c}X)B({Xi}{sup 0}{sub c}{r_arrow}{Xi}{sup {minus}}{pi}{sup +})= (0.144{plus_minus}0.048 {plus_minus}0.021) {times}10{sup {minus}3} and B({bar B}{r_arrow}{Xi}{sup +}{sub c}X)B({Xi}{sup +}{sub C}{r_arrow} {Xi}{sup {minus}}{pi}{sup +}{pi}{sup +}) =(0.453{plus_minus} 0.096{sup +0.085}{sub {minus}0.065}){times} 10{sup {minus}3} . {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 628713
• Journal Information: Physical Review Letters, Vol. 79, Issue 19; Other Information: PBD: Nov 1997
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
B MESONS
WEAK HADRONIC DECAY
UPSILON-10580 MESONS
XI C NEUTRAL BARYONS
XI C PLUS BARYONS
BRANCHING RATIO
STRANGE PARTICLES
STORAGE RINGS
BOUND STATE
QUARK MODEL
QUANTUM CHROMODYNAMICS