%0 Journal Article
%T Search for the decay modes D-0 -> e(+) e(-), D-0 -> mu(+) mu(-), and D-0 -> e(+/-) μ-/+
%A BABAR Collaboration (Lees, J. P. et al
%A Martinez-Vidal, F.
%A Oyanguren, A.
%J Physical Review D
%D 2012
%V 86
%N 3
%I Amer Physical Soc
%@ 1550-7998
%G English
%F BABARCollaborationLees_etal2012
%O WOS:000306993800002
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=1120), last updated on Sun, 02 Sep 2012 12:29:52 +0000
%X We present searches for the rare decay modes D-0 -> e(+) e(-), D-0 -> mu(+) mu(-), and D-0 -> e(+/-) mu(-/+) in continuum e(+) e(-) -> c (c) over bar events recorded by the BABAR detector in a data sample that corresponds to an integrated luminosity of 468 fb(-1). These decays are highly Glashow-Iliopoulos-Maiani suppressed but may be enhanced in several extensions of the standard model. Our observed event yields are consistent with the expected backgrounds. An excess is seen in the D-0 -> mu(+) mu(-) channel, although the observed yield is consistent with an upward background fluctuation at the 5% level. Using the Feldman-Cousins method, we set the following 90% confidence level intervals on the branching fractions: B(D-0 -> e(+) e(-)) < 1.7 x 10(-7), B(D-0 -> mu(+) mu(-)) within [0.6,8.1] x 10(-7), and B(D-0 -> e(+/-) mu(-/+)) < 3.3 x 10(-7).
%R 10.1103/PhysRevD.86.032001
%U http://arxiv.org/abs/1206.5419
%U https://doi.org/10.1103/PhysRevD.86.032001
%P 032001-10pp