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First Observation of the Decay B{sup 0} {r_arrow} D{sup {asterisk}+}D {sup {asterisk}{minus}}

Journal Article · · Physical Review Letters
; ; ; ; ; ; ; ; ; ;  [1]; ; ; ;  [2]; ; ; ; ;  [3] more »; ; ; ; ;  [4]; ; ; ; ; ; ; ; ; ;  [5]; ; ; ; ; ;  [6]; ; ; ; ; ; ; ; ; ; ;  [7]; ; ; ; ; ;  [8]; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ;  [9]; ; ; ; ; ; « less
  1. Syracuse University, Syracuse, New York 13244 (United States)
  2. Vanderbilt University, Nashville, Tennessee 37235 (United States)
  3. Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061 (United States)
  4. Wayne State University, Detroit, Michigan 48202 (United States)
  5. California Institute of Technology, Pasadena, California 91125 (United States)
  6. University of California, San Diego, La Jolla, California 92093 (United States)
  7. University of California, Santa Barbara, California 93106 (United States)
  8. University of Colorado, Boulder, Colorado 80309-0390 (United States)
  9. Cornell University, Ithaca, New York 14853 (United States)
+ Show Author Affiliations

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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Related Subjects

66 PHYSICS
B MESONS
B NEUTRAL MESONS
BRANCHING RATIO
CP INVARIANCE
D MESONS
D MINUS MESONS
D PLUS MESONS
PARTICLE DECAY
PIONS MINUS
PIONS NEUTRAL
PIONS PLUS