Search for a low-mass scalar Higgs boson decaying to a tau pair in single-photon decays of Y(1S)
Abstract
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 τ^+τ^- pair: Υ(1S) → γA^0. The production of Υ(1S) mesons is tagged by Υ(2S) → π^+π^-Υ(1S) transitions, using a sample of (98.3 ± 0.9) × 10^6 Υ(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 Υ(3S) decays, setting limits on the coupling of A^0 to the bb̅ 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.
Additional Information
© 2013 American Physical Society. Received 23 October 2012; published 10 October 2013. We are grateful for the excellent luminosity and machine conditions provided by our PEP-II colleagues, and for the substantial dedicated effort from the computing organizations that support BABAR. The collaborating institutions wish to thank SLAC for its support and kind hospitality. This work is supported by DOE and NSF (USA), NSERC (Canada), CEA and CNRS-IN2P3 (France), BMBF and DFG (Germany), INFN (Italy), FOM (The Netherlands), NFR (Norway), MES (Russia), MICIIN (Spain), and STFC (United Kingdom). Individuals have received support from the Marie Curie EIF (European Union), the A. P. Sloan Foundation (USA) and the Binational Science Foundation (USA-Israel).Attached Files
Published - PhysRevD.88.071102.pdf
Submitted - 1210.5669v1.pdf
Files
1210.5669v1.pdf
Additional details
Identifiers
- Eprint ID
- 42698
- Resolver ID
- CaltechAUTHORS:20131125-145911867
Related works
- Describes
- http://arxiv.org/abs/1210.5669 (URL)
Funding
- Department of Energy (DOE)
- NSF
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- Commissariat à l'Energie Atomique (CEA)
- BMBF
- Istituto Nazionale di Fisica Nucleare (INFN)
- Stichting voor Fundamenteel Onderzoek der Materie (FOM)
- Norwegian Research Council
- Ministry of Education and Science of the Russian Federation
- MICINN (Spain)
- Science and Technology Facilities Council (STFC)
- Marie Curie Fellowship
- Alfred P. Sloan Foundation
- Binational Science Foundation (USA-Israel)
- Centre National de la Recherche Scientifique (CNRS)
- Institut National de Physique Nucléaire et de Physique des Particules (IN2P3)
- Deutsche Forschungsgemeinschaft (DFG)
Dates
- Created
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2013-11-26Created from EPrint's datestamp field
- Updated
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2021-11-10Created from EPrint's last_modified field