Journal article

Observation of X(3872) production in pp collisions at root s=7 TeV

Aaij, R.; Abellan Beteta, C.; Adeva, B.; Adinolfi, M.; Adrover, C.; Affolder, A.; Ajaltouni, Z.; Albrecht, J.; Alessio, F.; Alexander, M.

Using 34.7 pb(-1) of data collected with the LHCb detector, the inclusive production of the X(3872) meson in pp collisions at root s = 7 TeV is observed for the first time. Candidates are selected in the X(3872) -> J/psi pi(+)pi(-) decay mode, and used to measure


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