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.
Aaij, R., Beteta, C.a., Ackernley, T., Adeva, B., Adinolfi, M., Afsharnia, H., et al. (2021). Searches for 25 rare and forbidden decays of D+ and Ds+ mesons. JOURNAL OF HIGH ENERGY PHYSICS(6) [10.1007/JHEP06(2021)044].
Searches for 25 rare and forbidden decays of D+ and Ds+ mesons
Adinolfi, M.;Jr.;Archilli, F.;Carbone, A.;Carboni, G.;Cattaneo, M.;Chen, S.;D'Ambrosio, C.;De Capua, S.;Ferrari, F.;Fontana, M.;Gao, Y.;Li, Y.;Li, Y.;Mariani, S.;Pastore, A.;Petrucci, S.;Santovetti, E.Membro del Collaboration Group
;Vitali, G.;Wang, C.;Wang, J.;Wang, J.;Wang, J.;Wang, J.;Wang, Z.;Zhang, L.;Zhou, Y.;
2021-01-01
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
