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Search for factorization-suppressed B-->chi(c)K(*) decays.
B Aubert1, R Barate, D Boutigny
1Laboratoire de Physique des Particules, F-74941 Annecy-le-Vieux, France.
Physical Review Letters
|May 21, 2005
Summary
Researchers searched for specific B meson decays into chi(c0) and chi(c2) particles, which then decay into J/psi gamma. No significant signal was observed, leading to the establishment of upper limits for these decay branching fractions.
Area of Science:
- Particle Physics
- High-Energy Physics
- Experimental Physics
Background:
- B mesons are crucial for studying CP violation and fundamental particle interactions.
- Factorization-suppressed decays offer unique insights into the Standard Model.
- Previous searches have explored various B meson decay modes.
Purpose of the Study:
- To search for the factorization-suppressed decays B-->chi(c0)K(*) and B-->chi(c2)K(*).
- To investigate the decay modes where chi(c0) and chi(c2) decay into J/psi gamma.
- To set upper limits on the branching fractions for these rare decays.
Main Methods:
- Utilized a data sample of 124 x 10^6 BBbar events.
- Data collected using the BABAR detector at the PEP-II storage ring.
- Analysis focused on identifying specific decay signatures and reconstructing particle momenta.
Main Results:
- No significant signal was observed for the targeted B-->chi(c0)K(*) and B-->chi(c2)K(*) decays.
- Upper bounds for the branching fractions of these decays were established.
- The results constrain theoretical models predicting these decay rates.
Conclusions:
- The absence of a signal suggests these specific decay modes are highly suppressed or forbidden.
- The derived upper limits provide valuable data for refining theoretical predictions in particle physics.
- Further studies with larger datasets may be needed to probe even rarer decay channels.