Abstract
We have used the measured yield of leptons near the end point of the momentum spectrum from semileptonic B decay to obtain an upper limit on (bul)/(bcl) and a corresponding limit on Vub/Vcb.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 407-410 |
| Number of pages | 4 |
| Journal | Physical review letters |
| Volume | 59 |
| Issue number | 4 |
| DOIs | |
| State | Published - 1987 |
Bibliographical note
Funding Information:The authors are grateful to National Institutes of Health (Grant No. 1 F02 NS-51982-0" Bethesda, Md. U.S.A., and to the Multiple Sclerosis Society of Great Britain and Northern l-for financial support. * Present address: Department of Neurology, Stanford University and Neurol~ Veterans Administration Hospital, 3801 Miranda Avenue, Palo Alto, Calif. 94304, I r * * Present address: The Wellcome Research Laboratories, Langley Court, Beckr 3BS (Great Britain)