The decay -> J/psi K (+) K (-) pi (+) is observed for the first time, using protonproton collisions collected with the LHCb detector corresponding to an integrated luminosity of 3 fb(-1). A signal yield of 78 +/- 14 decays is reported with a significance of 6.2 standard deviations. The ratio of the branching fraction of -> J/psi K (+) K (-) pi (+) decays to that of -> J/psi IEuro (+) decays is measured to be 0.53 +/- 0.10 +/- 0.05, where the first uncertainty is statistical and the second is systematic.
Titolo: | Observation of the decay -> J/psi K (+) K (-) pi (+) |
Autori: | |
Data di pubblicazione: | 2013 |
Rivista: | |
Digital Object Identifier (DOI): | http://dx.doi.org/10.1007/JHEP11(2013)094 |
Handle: | http://hdl.handle.net/11384/38637 |
Appare nelle tipologie: | 1.1 Articolo in rivista |
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