Investigation of Semileptonic B Meson Decay to P-Wave Charm Mesons
- SLAC
We have studied semileptonic B meson decays with a P-wave charm meson in the final state using 3.29 x 10{sup 6} B{bar B} events collected by the CLEO II detector at the Cornell Electron-positron Storage Ring. We find a value for the exclusive semileptonic product branching fraction: {Beta}(B{sup -} {yields} D{sub 1}{sup 0}{ell}{sup -}{bar {nu}}{sub {ell}}){Beta}(D{sub 1}{sup 0} {yields} D*{sup +}{pi}{sup -}) = (0.373 {+-} 0.085 {+-} 0.052 {+-} 0.024)% and an upper limit for {Beta}(B{sup -} {yields} D*{sub 2}{sup 0}{ell}{sup -}{bar {nu}}{sub {ell}}){Beta}(D*{sub 2}{sup 0} {yields} D*{sup +}{pi}{sup -}) < 0.16% (90% C.L.). These results indicate that at least 20% of the total B semileptonic rate is unaccounted for by the observed exclusive decays, B{sup -} {yields} D{sup 0}{ell}{sup -}{bar {nu}}, B{sup -} {yields} D*{sup 0}{ell}{sup -}{bar {nu}}, B{sup -} {yields} D{sub 1}{sup 0}{ell}{sup -}{bar {nu}}, and B{sup -} {yields} D*{sub 2}{sup 0}{ell}{sup -}{bar {nu}}.
- Research Organization:
- Stanford Linear Accelerator Center, Menlo Park, CA (US)
- Sponsoring Organization:
- USDOE Office of Science (US)
- DOE Contract Number:
- AC03-76SF00515
- OSTI ID:
- 813340
- Report Number(s):
- SLAC-PUB-9836
- Country of Publication:
- United States
- Language:
- English
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