Speaker
Prof.
Yury Kolomensky
(University of California, Berkeley)
Description
We search for a light CP-odd Higgs boson, A^0, in the radiative
decay of Y(3S) --> gamma A^0, A^0 --> tau+ tau-,
tau+ --> e+ nu_e nubar_tau or tau+ --> mu+ nu_mu nubar_tau.
The data sample contains 122 million Y(3S) events collected
with the BaBar detector. We find no evidence for a narrow structure
in the studied mass region of 4.03 < m_{A^0} < 10.10 GeV/c^2 and set
the 90% C.L. upper limits on the branching fraction product
BR(Y(3S) --> gamma A^0) x BR(A^0 --> tau+ tau-) in that mass
range. We also set an upper limit on the tau-decays of the recently
discovered eta_b meson.
