%0 Journal Article
%T Search for a low-mass scalar Higgs boson decaying to a tau pair in single-photon decays of Y(1S)
%A BABAR Collaboration (Lees, J. P. et al
%A Martinez-Vidal, F.
%A Oyanguren, A.
%A Villanueva-Perez, P.
%J Physical Review D
%D 2013
%V 88
%N 7
%I Amer Physical Soc
%@ 1550-7998
%G English
%F BABARCollaborationLees_etal2013
%O WOS:000326039300001
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=1632), last updated on Thu, 21 Nov 2013 19:09:58 +0000
%X We search for a low-mass scalar CP-odd Higgs boson, A(0), produced in the radiative decay of the upsilon resonance and decaying into a tau(+)tau(-) pair: Y(1S) -> gamma A(0). The production of Y(1S) mesons is tagged by Y(2S) -> pi(+)pi(-) Y(1S) transitions, using a sample of (98.3 +/- 0.9) x 10(6) Y(2S) mesons collected by the BABAR detector. We find no evidence for a Higgs boson in the mass range 3: 5 <= m(A)0 <= 9: 2 GeV, and combine these results with our previous search for the tau decays of the light Higgs in radiative Y(3S) decays, setting limits on the coupling of A(0) to the b (b) over bar quarks in the range 0.09-1.9. Our measurements improve the constraints on the parameters of the next-to-minimal-supersymmetric Standard Model and similar theories with low-mass scalar degrees of freedom.
%R 10.1103/PhysRevD.88.071102
%U http://arxiv.org/abs/1210.5669
%U https://doi.org/10.1103/PhysRevD.88.071102
%P 071102-8pp