| dc.contributor.author | Ammar, Raymond G. | |
| dc.contributor.author | Bean, Alice | |
| dc.contributor.author | Besson, David Zeke | |
| dc.contributor.author | Davis, Robin E. P. | |
| dc.contributor.author | Kwak, Nowhan | |
| dc.contributor.author | Zhao, X. | |
| dc.date.accessioned | 2007-04-09T23:36:48Z | |
| dc.date.available | 2007-04-09T23:36:48Z | |
| dc.date.issued | 2001-03 | |
| dc.identifier.citation | Alexander, JP; Baker, R, et al. Measurement of the relative branching fraction of gamma r(4S) to charged and neutral B-meson pairs. PHYSICAL REVIEW LETTERS. March 2001. 86(13) : 2737-2741 | |
| dc.identifier.uri | http://hdl.handle.net/1808/1314 | |
| dc.description.abstract | We analyze 9.7 X 10(6) B (B) over bar pairs recorded with the CLEO detector to determine the production ratio of charged to neutral B-meson pairs produced at the Y(4S) resonance. We measure the rates for B-0 --> J/psiK((*)0) and B+ --> J/psiK((*)+) decays and use the world-average B-meson lifetime ratio to extract the relative widths f(+-)/f(00) = Gamma (Y(4S)-->B+B-)/Gamma (Y(4S)-->B-0(B) over bar (0)) = 1.04 +/- 0.07(stat) +/- 0.04(syst). With the assumption that f(+-) + f(00) = 1, we obtain f(00) = 0.49 +/- 0.02(stat) +/- 0.01(syst) and f(+-) = 0.51 +/- 0.02(stat) +/- 0.01(syst). This production ratio and its uncertainty apply to all exclusive B-meson branching fractions measured at the Y(4S) resonance. | |
| dc.language.iso | en_US | |
| dc.publisher | AMERICAN PHYSICAL SOC | |
| dc.relation.isversionof | http://publish.aps.org/ | |
| dc.title | Measurement of the relative branching fraction of gamma r(4S) to charged and neutral B-meson pairs | |
| dc.type | Article | |
| dc.rights.accessrights | openAccess | |
