(2009) Search for a low-mass Higgs Boson in upsilon(3S) -> gamma A(0), A(0) -> tau(+) tau(-) at BABAR. Physical Review Letters, Vol.103 (No.18). article no.181801 . doi:10.1103/PhysRevLett.103.181801

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Abstract

We search for a light Higgs boson A(0) in the radiative decay Upsilon(3S) -> gamma A(0), A(0) -> tau(+) tau(-), tau(+) -> e(+) nu(e)(nu) over bar (tau) or tau(+) -> mu(+) nu(mu)(nu) over bar (tau) . The data sample contains 122 X 10(6) Upsilon(3S) events recorded with the BABAR detector. We find no evidence for a narrow structure in the studied tau(+) tau(-) invariant mass region of 4.03 < m(tau+ tau-) < 10: 10 GeV= c(2). We exclude at the 90% confidence level (C.L.) a low-mass Higgs boson decaying to tau(+) tau(-) with a product branching fraction B(Upsilon(3S) -> A(0)) B(A(0) -> tau(+) tau(-)) > (1.5 - 16) X 10(-5) across the m(tau+ tau-) range. We also set a 90% C. L. upper limit on the tau(+) tau(-) decay of the eta(b) at B(eta(b) -> tau(+) tau(-)) < 8%.

Item Type:	Journal Article
Subjects:	Q Science > QC Physics
Divisions:	Faculty of Science > Physics
Journal or Publication Title:	Physical Review Letters
Publisher:	American Physical Society
ISSN:	0031-9007
Official Date:	30 October 2009
Dates:	Date Event 30 October 2009 Published
Volume:	Vol.103
Number:	No.18
Number of Pages:	7
Page Range:	article no.181801
DOI:	10.1103/PhysRevLett.103.181801
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access
Funder:	DOE, NSF (USA), NSERC (Canada), CEA, CNRS-IN2P3 (France), BMBF, DFG (Germany, INFN (Italy), FOM (The Netherlands), NFR (Norway), MES (Russia), MEC (Spain), STFC (United Kingdom), Marie Curie EIF (European Union), A. P. Sloan Foundation

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