Abstract
A study of decays is performed for the first time using data corresponding to an integrated luminosity of collected by the LHCb experiment in collisions at center-of-mass energies of 7 and 8 TeV. Evidence for the decay is reported with a significance of 4.0 standard deviations, giving . Here denotes a branching fraction while and are the production cross sections for and mesons. An indication of weak annihilation is found for the region , with a significance of 2.4 standard deviations.
- Received 21 July 2016
DOI:https://doi.org/10.1103/PhysRevD.94.091102
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© 2016 CERN, for the LHCb Collaboration