TY - JOUR AU - CDF Collaboration (Aaltonen, T. et al AU - Cabrera, S. PY - 2011 DA - 2011// TI - Search for a Very Light CP-Odd Higgs Boson in Top Quark Decays from p p-bar Collisions at sqrt(s)=1.96 TeV T2 - Phys. Rev. Lett. JO - Physical Review Letters SP - 031801 EP - 8pp VL - 107 IS - 3 PB - Amer Physical Soc AB - 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). SN - 0031-9007 UR - http://arxiv.org/abs/arXiv:1104.5701 UR - https://doi.org/10.1103/PhysRevLett.107.031801 DO - 10.1103/PhysRevLett.107.031801 LA - English N1 - WOS:000292597400004 ID - CDFCollaborationAaltonen+Cabrera2011 ER -