Search for B+ meson decay to a1+ K0

We present a search for the decay \(B^+ \rightarrow a_1^+(1260) K^{*0}(892)\). The data, collected with the \mbox{\slshape B\kern-0.1em{\smaller A}\kern-0.1em B\kern-0.1em{\smaller A\kern-0.2em R}} detector at the SLAC National Accelerator Laboratory, represent 465 million \(B\overline{B}\) pairs pr...

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Bibliographic Details
Published in:arXiv.org 2010-07
Main Authors: The BABAR Collaboration, P del Amo Sanchez et al
Format: Article
Language:English
Subjects:
Confidence intervals
Particle decay
Online Access:Get full text
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Summary:We present a search for the decay \(B^+ \rightarrow a_1^+(1260) K^{*0}(892)\). The data, collected with the \mbox{\slshape B\kern-0.1em{\smaller A}\kern-0.1em B\kern-0.1em{\smaller A\kern-0.2em R}} detector at the SLAC National Accelerator Laboratory, represent 465 million \(B\overline{B}\) pairs produced in \(e^+e^-\) annihilation at the energy of the \(\Upsilon(4s)\). We find no significant signal and set an upper limit at 90\%\ confidence level on the product of branching fractions {\cal B}(B^+ \rightarrow a_1^+(1260) K^{*0}(892)) \times {\cal B}(a_1^+(1260) \rightarrow \pi^+ \pi^- \pi^+) of \(1.8 \times 10^{-6}\).
ISSN:2331-8422
DOI:10.48550/arxiv.1007.2732