BaBar Collaboration (Including: Gershon, T. J., Harrison, P. F. and Latham, Thomas). (2013) Search for a low-mass scalar Higgs boson decaying to a tau pair in single-photon decays of Υ(1S). Physical Review D - Particles, Fields, Gravitation and Cosmology , Volume 88 (Number 7). Article number 071102. doi:10.1103/PhysRevD.88.071102 ISSN 1550-7998.

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Abstract

We search for a low-mass scalar CP-odd Higgs boson, A0, produced in the radiative decay of the upsilon resonance and decaying into a τ+τ- pair: Υ(1S)→γA0. The production of Υ(1S) mesons is tagged by Υ(2S) →π+π-Υ(1S) transitions, using a sample of (98.3±0.9)×106 Υ(2S) mesons collected by the BABAR detector. We find no evidence for a Higgs boson in the mass range 3.5≤m A0≤9.2 GeV, and combine these results with our previous search for the tau decays of the light Higgs in radiative Υ(3S) decays, setting limits on the coupling of A0 to the bb̄ 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.

Item Type:	Journal Article
Divisions:	Faculty of Science, Engineering and Medicine > Science > Physics
Journal or Publication Title:	Physical Review D - Particles, Fields, Gravitation and Cosmology
Publisher:	American Physical Society
ISSN:	1550-7998
Official Date:	10 October 2013
Dates:	Date Event 10 October 2013 Published 23 October 2012 Submitted
Volume:	Volume 88
Number:	Number 7
Article Number:	Article number 071102
DOI:	10.1103/PhysRevD.88.071102
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access

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