First Observation of the Decay B{sup 0} {r_arrow} D{sup {asterisk}+}D {sup {asterisk}{minus}}
Journal Article
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· Physical Review Letters
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- 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, Boulder, Colorado 80309-0390 (United States)
- Cornell University, Ithaca, New York 14853 (United States)
We have observed four fully reconstructed B{sup 0}{r_arrow}D{sup {asterisk}+}D{sup {asterisk}{minus}} candidates in 5.8{times}10{sup 6} {Upsilon}(4S){r_arrow}B{ovr B} decays recorded with the CLEO detector. The background is estimated to be 0.31{plus_minus}0.10 thinspthinspevents. The probability that the background could produce four or more signal candidates with the observed distribution among D{sup {asterisk}+} and D{sup {asterisk}{minus}} decay modes is 1.1{times}10{sup {minus}4} . The measured decay rate, B(B{sup 0}{r_arrow}D{sup {asterisk}+}D{sup {asterisk} {minus}})=[6.2{sup +4.0}{sub {minus}2.9}( stat){plus_minus}1.0(syst) ]{times}10{sup {minus}4} , is large enough for this decay mode to be of interest for the measurement of a time-dependent CP asymmetry. {copyright} {ital 1999} {ital The American Physical Society}
- OSTI ID:
- 347061
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 15 Vol. 82; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
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