PT Journal
AU LHCb Collaboration (Aaij, Rea
   Garcia Martin, LM
   Henry, L
   Jashal, BK
   Martinez-Vidal, F
   Oyanguren, A
   Remon Alepuz, C
   Ruiz Vidal, J
   Sanchez Mayordomo, C
TI Searches for 25 rare and forbidden decays of D+ and Ds+ mesons
SO Journal of High Energy Physics
JI J. High Energy Phys.
PY 2021
BP 044
EP 24pp
VL 06
IS 6
DI 10.1007/JHEP06(2021)044
LA English
DE Charm physics; Flavour physics; Flavour Changing Neutral Currents; Hadron-Hadron scattering (experiments); Rare decay
AB 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.
ER