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Searches for B0(s)→J/ψppˉ and B+→J/ψppˉπ+ decays
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LHCb Collaboration (Including: Back, J. J., Craik, Daniel, Dossett, D., Gershon, T. J., Kreps, Michal, Latham, Thomas, Pilar, T., Poluektov, Anton, Reid, Matthew M., Silva Coutinho, R., Wallace, Charlotte, Whitehead, M. (Mark) and Williams, M. P.). (2013) Searches for B0(s)→J/ψppˉ and B+→J/ψppˉπ+ decays. Journal of High Energy Physics, Volume 2013 (Number 9). Article number 6. doi:10.1007/JHEP09(2013)006 ISSN 1029-8479.
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WRAP_LHCb_art%253A10.1007%252FJHEP09%25282013%2529006.pdf - Published Version Available under License Creative Commons Attribution. Download (885Kb) | Preview |
Official URL: http://dx.doi.org/10.1007/JHEP09(2013)006
Abstract
The results of searches for B0(s)→J/ψ pp¯ and B + → J/ψ p p¯ π+ decays are reported. The analysis is based on a data sample, corresponding to an integrated luminosity of 1.0 fb−1 of pp collisions, collected with the LHCb detector. An excess with 2.8 σ significance is seen for the decay B0s→J/ψ pp¯ and an upper limit on the branching fraction is set at the 90 % confidence level: B(B0s→J/ψ pp¯) < 4.8 × 10−6, which is the first such limit. No significant signals are seen for B0 → J/ψ pp¯ and B+ → J/ψ pp¯ π + decays, for which the corresponding limits are set: B(B0→J/ψ pp¯) < 5.2 × 10−7, which significantly improves the existing limit; and B(B+→J/ψ pp¯π+) < 5.0 × 10−7, which is the first limit on this branching fraction.
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