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Searches for 25 rare and forbidden decays of D+ and D+s mesons

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

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

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Citation

The LHCb collaboration, Aaij, R., Abellan Beteta, C., Ackernley, T., Adeva, B., Adinolfi, M., et al. (2021). Searches for 25 rare and forbidden decays of D+ and D+s mesons. Journal of high energy physics: JHEP, (6): 44. doi:10.1007/JHEP06(2021)044.


Cite as: https://hdl.handle.net/21.11116/0000-000A-3183-A
Abstract
A search is performed for rare and forbidden charm decays of the form
D+-> hl+l -/+, where h(+/-) is a pion or kaon and l((')+/-) is an
electron or muon. The measurements are performed using proton-proton
collision data, corresponding to an integrated luminosity of 1.6 fb(-1),
collected by the LHCb experiment in 2016. No evidence is observed for
the 25 decay modes that are investigated and 90 % confidence level
limits on the branching fractions are set between 1.4 x 10(-8) and 6.4 x
10(-6). In most cases, these results represent an improvement on
existing limits by one to two orders of magnitude.