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http://hdl.handle.net/2445/140656
Title: | Production and Decay of Ξ0c at BABAR |
Author: | Graugés Pous, Eugeni BABAR Collaboration |
Keywords: | Física de partícules Experiments Particle physics Experiments |
Issue Date: | 30-Sep-2005 |
Publisher: | American Physical Society |
Abstract: | Using 116.1 fb − 1 of data collected by the BABAR detector, we present an analysis of Ξ 0 c production in B decays and from the c ¯ c continuum, with the Ξ 0 c decaying into Ω − K + and Ξ − π + final states. We measure the ratio of branching fractions B ( Ξ 0 c → Ω − K + ) / B ( Ξ 0 c → Ξ − π + ) to be 0.294 ± 0.018 ± 0.016 , where the first uncertainty is statistical and the second is systematic. The Ξ 0 c momentum spectrum is measured on and 40 MeV below the Υ ( 4 S ) resonance. From these spectra the branching fraction product B ( B → Ξ 0 c X ) × B ( Ξ 0 c → Ξ − π + ) is measured to be ( 2.11 ± 0.19 ± 0.25 ) × 10 − 4 , and the cross-section product σ ( e + e − → Ξ 0 c X ) × B ( Ξ 0 c → Ξ − π + ) from the continuum is measured to be ( 388 ± 39 ± 41 ) fb at a center-of-mass energy of 10.58 GeV. |
Note: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevLett.95.142003 |
It is part of: | Physical Review Letters, 2005, vol. 95, num. 14, p. 142003 |
URI: | http://hdl.handle.net/2445/140656 |
Related resource: | https://doi.org/10.1103/PhysRevLett.95.142003 |
ISSN: | 0031-9007 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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