The decays B +→ J / ψ 3 π +2 π - and B +→ ψ (2S) π +π +π - are observed for the first time using a data sample corresponding to an integrated luminosity of 3.0 fb- 1, collected by the LHCb experiment in proton–proton collisions at the centre-of-mass energies of 7 and 8TeV. The branching fractions relative to that of B +→ ψ (2S) K + are measured to be (Formula Presented.), where the first uncertainties are statistical and the second are systematic.
CITATION STYLE
Aaij, R., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., Albrecht, J., … Zucchelli, S. (2017). Observation of B +→ J / ψ 3 π +2 π - and B +→ ψ (2 S) π +π +π - decays. European Physical Journal C, 77(2). https://doi.org/10.1140/epjc/s10052-017-4610-6
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