MEASUREMENT OF THE INCLUSIVE ELECTRON SPECTRUM IN CHARMLESS SEMILEPTONIC B DECAYS NEAR THE KINEMATIC ENDPOINT
A preliminary result on the study of the inclusive electron spectrum in B {yields} X{sub u}e{nu} decays above the kinematic limit for the dominant B {yields} X{sub c}e{nu} transitions is presented. This study is performed at the PEP-II asymmetric B Factory, where B meson pairs are produced in the decay of the {Upsilon}(4S) resonance. For the electron momentum range of 2.3-2.6 GeV/c in the {Upsilon}(4S) rest frame, the partial branching ratio is measured to be {Delta}{Beta}(B {yields} X{sub u}e{nu}) = (0.152 {+-} 0.014 {+-} 0.014) {center_dot} 10{sup -3}.
- Research Organization:
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Sponsoring Organization:
- USDOE Office of Energy Research (ER) (US)
- DOE Contract Number:
- AC03-76SF00515
- OSTI ID:
- 799945
- Report Number(s):
- SLAC-PUB-9282; TRN: US200308%%437
- Resource Relation:
- Other Information: PBD: 26 Jul 2002
- Country of Publication:
- United States
- Language:
- English
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