Skip to main content
OSTI.GOVU.S. Department of Energy Office of Scientific and Technical Information
U.S. Department of Energy
Office of Scientific and Technical Information
 

Search for the Decays {ital B}{sup 0}{r_arrow}{ital D}{sup ({asterisk})+}{ital D}{sup ({asterisk}){minus}}

Journal Article · · Physical Review Letters
; ; ; ; ;  [1]; ; ; ; ; ; ; ; ; ; ; ;  [2]; ; more »; ; ; ; ; ;  [3]; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ;  [4]; ; ; ; ; ; ; ;  [5]; ; ; ; ; ;  [6]; ; ; ;  [7]; ; ; ; ; ; ; ; ; ; ; ;  [8];  [9]; ; ; ; ;  [10] « less
  1. University of California, San Diego, La Jolla, California 92093 (United States)
  2. University of California, Santa Barbara, California 93106 (United States)
  3. University of Colorado, Boulder, Colorado 80309-0390 (United States)
  4. Cornell University, Ithaca, New York 14853 (United States)
  5. University of Florida, Gainesville, Florida 32611 (United States)
  6. Harvard University, Cambridge, Massachusetts 02138 (United States)
  7. University of Hawaii at Manoa, Honolulu, Hawaii 96822 (United States)
  8. University of Illinois, Champaign-Urbana, Illinois 61801 (United States)
  9. Carleton University, Ottawa, Ontario, K1S 5B6 (Canada)
  10. McGill University, Montreal, Quebec, (Canada)
+ Show Author Affiliations

Using the CLEO-II data set we have searched for the decays B{sup 0}{r_arrow}D{sup (*)+}D{sup (* ){minus}} . We observe one candidate signal event for the decay B{sup 0}{r_arrow}D{sup *+}D{sup *{minus}} with an expected background of 0.022{plus_minus}0.011 events. This yield corresponds to a branching fraction of B(B{sup 0}{r_arrow}D{sup *+}D{sup *{minus}} )=[5.3{sup +7.1}{sub {minus}3.7}(stat ){plus_minus}1.0(syst)]{times} 10{sup {minus}4} and an upper limit of B(B{sup 0}{r_arrow}D{sup *+}D{sup *{minus}} ){lt}2.2{times}10{sup {minus}3} at the 90% C.L. We see no significant excess of signal above the expected background level in the other modes, and we calculate the 90% C.L.upper limits on the branching fractions to be B(B{sup 0}{r_arrow}D{sup *{plus_minus}}D{sup {minus_plus}}){lt}1.8{times}10{sup {minus}3} and B(B{sup 0}{r_arrow}D{sup +}D{sup {minus}}){lt}1.2{times}10{sup {minus}3} . {copyright} {ital 1997} {ital The American Physical Society}

OSTI ID:
548797
Journal Information:
Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 5 Vol. 79; ISSN 0031-9007; ISSN PRLTAO
Country of Publication:
United States
Language:
English

Similar Records

New Measurement of {ital B} {r_arrow} {ital D}{sup {asterisk}}{ital {pi}} Branching Fractions
Journal Article · Sat Feb 28 23:00:00 EST 1998 · Physical Review Letters · OSTI ID:627561
First evidence for the decay {ital K{sub L}}{r_arrow}{ital e}{sup {bold +}}{ital e}{sup {bold {minus}}}{bold {mu}}{sup {bold +{mu}}}{sup {bold {minus}}}
Journal Article · Sat Jun 01 00:00:00 EDT 1996 · Physical Review Letters · OSTI ID:285986
Search for the Decays B{sup 0}{sub s} , B{sup 0}{sub d} {r_arrow} e{sup {plus_minus}}{mu}{sup {minus_plus} } and Pati-Salam Leptoquarks
Journal Article · Mon Nov 30 23:00:00 EST 1998 · Physical Review Letters · OSTI ID:300158

Related Subjects

66 PHYSICS
ASYMMETRY
B NEUTRAL MESONS
BRANCHING RATIO
CP INVARIANCE
D MESONS
EIGENSTATES
SIGNALS
VIOLATIONS
WEAK HADRONIC DECAY