%0 Journal Article
%T Search for a Very Light CP-Odd Higgs Boson in Top Quark Decays from p p-bar Collisions at sqrt(s)=1.96 TeV
%A CDF Collaboration (Aaltonen, T. et al
%A Cabrera, S.
%J Physical Review Letters
%D 2011
%V 107
%N 3
%I Amer Physical Soc
%@ 0031-9007
%G English
%F CDFCollaborationAaltonen+Cabrera2011
%O WOS:000292597400004
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=695), last updated on Tue, 09 Aug 2011 09:54:33 +0000
%X We present the results of a search for a very light CP-odd Higgs boson a(1)(0) originating from top quark decays t -> H(+/-)b -> W(+/-(*)) a(1)(0)b, and subsequently decaying into tau(+)tau(-). Using a data sample corresponding to an integrated luminosity of 2.7 fb(-1) collected by the CDF II detector in p (p) over bar collisions at 1.96 TeV, we perform a search for events containing a lepton, three or more jets, and an additional isolated track with transverse momentum in the range 3 to 20 GeV/c. Observed events are consistent with background sources, and 95% C.L. limits are set on the branching ratio of t -> H(+/-)b for various masses of H(+/-) and a(1)(0).
%R 10.1103/PhysRevLett.107.031801
%U http://arxiv.org/abs/arXiv:1104.5701
%U https://doi.org/10.1103/PhysRevLett.107.031801
%P 031801-8pp