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Evidence for the decay B+c→J/ψ3π+2π−
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LHCb Collaboration (Including: Back, J. J., Blake, Thomas, 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.). (2014) Evidence for the decay B+c→J/ψ3π+2π−. Journal of High Energy Physics, Volume 2014 (Number 5). Article number 148. doi:10.1007/JHEP05(2014)148 ISSN 1029-8479.
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WRAP_art3A10.10072FJHEP05%28201429148.pdf - Published Version - Requires a PDF viewer. Available under License Creative Commons Attribution. Download (638Kb) | Preview |
Official URL: http://dx.doi.org/10.1007/JHEP05(2014)148
Abstract
Evidence is presented for the decay B+c → J/ψ 3π+2π− using proton-proton collision data, corresponding to an integrated luminosity of 3 fb−1, collected with the LHCb detector. A signal yield of 32 ± 8 decays is found with a significance of 4.5 standard deviations. The ratio of the branching fraction of the B+c → J/ψ3π+2π− decay to that of the B+c → J/ψ π+ decay is measured to be
B(B+c → J/ψ 3π+2π−)/B(B+c → J/ψ π+� = 1.74 ± 0.44 ± 0.24
where the first uncertainty is statistical and the second is systematic.
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