Title
Search for a light pseudoscalar Higgs boson in the dimuon decay channel in pp collisions at <tex>$\sqrt{s}$</tex>=7 TeV Search for a light pseudoscalar Higgs boson in the dimuon decay channel in pp collisions at <tex>$\sqrt{s}$</tex>=7 TeV
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
article
Publication
New York, N.Y. ,
Subject
Physics
Source (journal)
Physical review letters. - New York, N.Y.
Volume/pages
109(2012) :12 , 15 p.
ISSN
0031-9007
Article Reference
121801
Carrier
E-only publicatie
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
The dimuon invariant mass spectrum is searched in the range between 5.5 and 14 GeV 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: 3 fb(-1) collected in pp collisions at root s = 7 TeV 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 sigma x B(pp -> a -> mu(+) mu(-)) in the range of 1.5-7.5 pb. These results improve on existing bounds on the ab (b) over bar coupling for m(a) < m(gamma(1s)) and are the first significant limits for m(a) > m(gamma(3S)). Constraints on the supersymmetric parameter space are presented in the context of the next-to-minimal model.
Full text (open access)
https://repository.uantwerpen.be/docman/irua/b1218d/3121.pdf
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