Inclusive decays B{r_arrow}DX and B{r_arrow}D{sup *}X
more »
- University of Rochester, Rochester, New York 14627 (United States)
- Stanford Linear Accelerator Center, Stanford University, Stanford, California 94309 (United States)
- Southern Methodist University, Dallas, Texas 75275 (United States)
- Syracuse University, Syracuse, New York 13244 (United States)
- Vanderbilt University, Nashville, Tennessee 37235 (United States)
- Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061 (United States)
- Wayne State University, Detroit, Michigan 48202 (United States)
- California Institute of Technology, Pasadena, California 91125 (United States)
- University of California, San Diego, La Jolla, California 92093 (United States)
- University of California, Santa Barbara, California 93106 (United States)
- University of Colorado (United States)
We report new measurements of the differential and total branching ratios for inclusive B decay to D{sup 0}, D{sup +}, and D{sup *+} and the first measurement of the same quantities for inclusive B decay to D{sup *0}. Here B is the mixture of B{sub d} and B{sub u} from {Upsilon}(4S) decay. Furthermore, since more than one charm particle (or antiparticle) of the same kind can be produced in B decay, here {open_quotes}inclusive B branching ratio{close_quotes} is used to mean the average number of charm particles and their antiparticles of a certain species produced in B decay. We obtain the following results (the first error is statistical, the second systematic of this analysis, the third propagated from other measurements): B(B{r_arrow}D{sup 0}X)=(0.636{plus_minus}0.014{plus_minus}0.019{plus_minus}0.0 8), B(B{r_arrow}D{sup +}X)=(0.235{plus_minus}0.009{plus_minus}0.009{plus_minus}0.024), B(B{r_arrow}D{sup *0}X) =(0.247{plus_minus}0.012{plus_minus}0.018{plus_minus}0.018), B(B{r_arrow}D{sup *+}X)=(0.239{plus_minus}0.011{plus_minus}0.014{plus_minus}0. 09). The following ratio of branching ratios is not affected by most of the systematic errors: B(B{r_arrow}D{sup *0}X)/ B(B{r_arrow}D{sup *+}X)=(1.03{plus_minus}0.07{plus_minus}0.09{plus_minus}0.08). We also report the first measurement of the momentum-dependent D{sup *0} polarization and a new measurement of the D{sup *+} polarization in inclusive B decay. Using these measurements and other CLEO results and making some additional assumptions, we calculate the average number of c and {bar c} quarks produced in B decay to be {l_angle}n{sub c}{r_angle}=1.10{plus_minus}0.05. {copyright} {ital 1997} {ital The American Physical Society}
- OSTI ID:
- 628709
- Journal Information:
- Physical Review, D, Journal Name: Physical Review, D Journal Issue: 7 Vol. 56; ISSN PRVDAQ; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
Similar Records
The Inclusive Decays B -> DX and B -> D(*)X
Observation of the Radiative Decay {ital D}{sup *+}{r_arrow}{ital D}{sup +}{gamma}
First Observation of the Cabibbo Suppressed Decay {ital B}{sup {ital +}}{ital {r_arrow} {bar {ital D}}}{sup {ital 0}}{ital K}{sup +}
Technical Report
·
Thu May 08 20:00:00 EDT 2003
·
OSTI ID:813092
Observation of the Radiative Decay {ital D}{sup *+}{r_arrow}{ital D}{sup +}{gamma}
Journal Article
·
Fri May 01 00:00:00 EDT 1998
· Physical Review Letters
·
OSTI ID:627921
First Observation of the Cabibbo Suppressed Decay {ital B}{sup {ital +}}{ital {r_arrow} {bar {ital D}}}{sup {ital 0}}{ital K}{sup +}
Journal Article
·
Mon Jun 01 00:00:00 EDT 1998
· Physical Review Letters
·
OSTI ID:656281