Search for exclusive decays to and or with the L3 detector
Collaboration
15 pages
Published in:
- Phys.Lett.B 391 (1997) 481-490
Report number:
- CERN-PPE-96-152
Experiments:
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Abstract: (Elsevier)
A search for exclusive decays of B d 0 and B s 0 mesons has been performed in the channels B d 0 → J η , B s 0 → J η , B d 0 → J π 0 and B s 0 → J π 0 . The data sample consisted of more than three and half million hadrozic Z decays collected by the L3 experiment at LEP from 1991 through 1995. No candidate events have been observed for any of the modes thus determining upper limits at 90% confidence level: 3.2 × 10 −4 on Br(B d 0 → J π 0 ) and the first experimental limits: Br(B d 0 → J η ) < 1.2 × 10 −3 , Br(B s 0 → J η ) < 3.8 × 10 −3 , Br(B s 0 → J π 0 ) < 1.2 × 10 −3 .- electron positron: colliding beams
- electron positron: annihilation
- Z0: electroproduction
- Z0: hadronic decay
- B0: hadronic decay
- B/s0: hadronic decay
- J/psi(3100): leptonic decay
- eta: radiative decay
- pi0: radiative decay
- B0: branching ratio
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