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Model-Independent Study of Structure in B+ → D+DK+ Decays

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Schmelling,  M.
Division Prof. Dr. James A. Hinton, MPI for Nuclear Physics, Max Planck Society;

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Citation

LHCb Collaboraton, Aaij, R., Abellan Beteta, C., Ackernley, T., Adeva, B., Adinolfi, M., et al. (2020). Model-Independent Study of Structure in B<sup>+</sup> → D<sup>+</sup>D<sup-</sup>K<sup>+</sup> Decays. Physical Review Letters, 125(24): 242001. doi:10.1103/PhysRevLett.125.242001.


Cite as: https://hdl.handle.net/21.11116/0000-0008-2C6C-F
Abstract
The only anticipated resonant contributions to B+ -> D+D-K+ decays are charmonium states in the D+D- channel. A model-independent analysis, using LHCb proton-proton collision data taken at centerof-mass energies of root s = 7, 8, and 13 TeV, corresponding to a total integrated luminosity of 9 fb(-1), is carried out to test this hypothesis. The description of the data assuming that resonances only manifest in decays to the D+D- pair is shown to be incomplete. This constitutes evidence for a new contribution to the decay, potentially one or more new charm-strange resonances in the D-K+ channel with masses around 2.9 GeV/c(2).