# name
Observation of B+ → J/ψ 3π ^+ 2π ^- and B ^+ → ψ (2S) π ^+ π ^+ π ^- decays

# metadata.dc.description.abstract[].value
The decays B ^+ → J/ψ 3π ^+ 2π ^- 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 8 TeV. The branching fractions relative to that of B ^+ → ψ (2S) K ^+ are measured to be dfrac B ( B ^+ → J/ψ 3π ^+ 2π ^- )B ( B ^+ → ψ (2S) K ^+ )= & ( 1.88± 0.17± 0.09)× 10^-2, dfrac B ( B ^+ → ψ (2S) π ^+ π ^+ π ^- )B ( B ^+ → ψ (2S) K ^+ )= & ( 3.04± 0.50± 0.26)× 10^-2, where the first uncertainties are statistical and the second are systematic.

# metadata.dc.publisher[].value
Società Italiana di Fisica & Springer Verlag

# metadata.dc.relation.ispartof[].value
European Physical Journal C, 2017, vol. 77, num. 72, p. 12-31

# metadata.dc.rights[].value
cc-by (c) Camboni, Alessandro et al., 2017

# metadata.dc.source[].value
Articles publicats en revistes (Física Quàntica i Astrofísica)

# metadata.dc.subject.other[].value
Large Hadron Collider (France and Switzerland)

# metadata.dc.title[].value
Observation of B+ → J/ψ 3π ^+ 2π ^- and B ^+ → ψ (2S) π ^+ π ^+ π ^- decays