Publications [#309246] of Seog Oh

Papers Published

1. Aaltonen; T; al, E, Search for a Very Light ${CP}$-Odd {H}iggs Boson in Top Quark Decays from $p\overline{p}$ Collisions at $\sqrt{s}=1.96\text{\,}\text{\,}\mathrm{TeV}$, Phys. Rev. Lett., vol. 107 no. 3 (July, 2011), pp. 031801, American Physical Society [doi]
   (last updated on 2026/01/19)

   Abstract:
   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 τ+ τ-. Using a data sample corresponding to an integrated luminosity of 2.7  fb(-1) collected by the CDF II detector in pp 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).