# name
First observation of the decay B+→π+μ+μ−

# metadata.dc.description.abstract[].value
A discovery of the rare decay B + → π + μ + μ − is presented. This decay is observed for the first time, with 5.2 σ significance. The observation is made using pp collision data, corresponding to an integrated luminosity of 1.0 fb−1, collected with the LHCb detector. The measured branching fraction is (2.3 ± 0.6 (stat.) ± 0.1 (syst.))×10−8, and the ratio of the B + → π + μ + μ − and B + → K + μ + μ − branching fractions is measured to be 0.053 ± 0.014 (stat.) ± 0.001 (syst.).

# metadata.dc.relation.ispartof[].value
Journal of High Energy Physics, 2012, vol. 1212 , num. 125, p. 1-18

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

# metadata.dc.title[].value
First observation of the decay B+→π+μ+μ−