Abstract
An amplitude analysis of the final state structure in the decay mode is performed using of data collected by the LHCb experiment in 7 TeV center-of-mass energy collisions produced by the LHC. A modified Dalitz plot analysis of the final state is performed using both the invariant mass spectra and the decay angular distributions. Resonant structures are observed in the mass spectrum as well as a significant nonresonant -wave contribution over the entire mass range. The largest resonant component is the , accompanied by , , and four additional resonances. The overall branching fraction is measured to be , where the first uncertainty is statistical, the second systematic, and the third due to the ratio of the number of to mesons produced. The mass and width of the are measured to be and , respectively. The final state fractions of the other resonant states are also reported.
16 More- Received 5 February 2013
DOI:https://doi.org/10.1103/PhysRevD.87.072004
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© 2013 CERN, for the LHCb collaboration