Search for a light pseudoscalar Higgs boson in the dimuon decay channel in pp collisions at √s=7TeV

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dc.date.accessioned2022-04-29T04:47:24Z
dc.date.accessioned2022-12-20T02:20:47Z
dc.date.available2022-04-29T04:47:24Z
dc.date.available2022-12-20T02:20:47Z
dc.date.created2022-04-29T04:47:24Z
dc.date.issued2012-09-20
dc.identifierPhysical Review Letters, v. 109, n. 12, 2012.
dc.identifier1079-7114
dc.identifier0031-9007
dc.identifierhttp://hdl.handle.net/11449/226973
dc.identifier10.1103/PhysRevLett.109.121801
dc.identifier2-s2.0-84866662104
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/5407108
dc.description.abstractThe dimuon invariant mass spectrum is searched in the range between 5.5 and 14GeV for a light pseudoscalar Higgs boson a, predicted in a number of new physics models, including the next-to-minimal supersymmetric standard model. The data sample used in the search corresponds to an integrated luminosity of 1.3fb-1 collected in pp collisions at √s=7TeV with the CMS detector at the LHC. No excess is observed above the background predictions and upper limits are set on the cross section times branching fraction σ×B(pp→a→μ+μ-) in the range of 1.5-7.5pb. These results improve on existing bounds on the abb̄ coupling for ma<mΥ(1S) and are the first significant limits for ma>mΥ(3S). Constraints on the supersymmetric parameter space are presented in the context of the next-to-minimal model. © 2012 CERN. Published by the American Physical Society under the terms of the http://creativecommons.org/licenses/by/3.0/ Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
dc.languageeng
dc.relationPhysical Review Letters
dc.sourceScopus
dc.titleSearch for a light pseudoscalar Higgs boson in the dimuon decay channel in pp collisions at √s=7TeV
dc.typeArtículos de revistas


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