Evidence for the decay B[+ over c] → J/ψ 3π[superscript +]2π[superscript -]

• Main Authors: Counts, Ian Thomas Hunt (Contributor), Ilten, Philip James (Contributor), Williams, Michael (Contributor)
• Other Authors: Massachusetts Institute of Technology. Department of Physics (Contributor), Massachusetts Institute of Technology. Laboratory for Nuclear Science (Contributor)
• Format: Article
• Language: English
• Published: Springer-Verlag, 2014-09-11T15:48:54Z.
• Subjects: Article
• Online Access: Get fulltext

 Evidence is presented for the decay B[+ over c] → J/ψ 3π[superscript +]2π[superscript −] using proton-proton collision data, corresponding to an integrated luminosity of 3 fb[superscript −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[+ over c] → J/ψ 3π[superscript +]2π[superscript −] decay to that of the B[+ over c] → J/ψ π[superscript +] decay is measured to be B(B[+ over c] → J/ψ 3π[superscript +]2π[superscript −]/B(B[+ over c] → J/ψπ[superscript +] = 1.74 ± 0.44 ± 0.24, where the first uncertainty is statistical and the second is systematic.