Yayınlanmış 1 Ocak 2012
| Sürüm v1
Dergi makalesi
Açık
Search for a Light Pseudoscalar Higgs Boson in the Dimuon Decay Channel in pp Collisions at root s=7 TeV
Yazarlar/Oluşturanlar
- 1. Yerevan Phys Inst, Yerevan 375036, Armenia
- 2. OeAW, Inst Hochenergiephys, Vienna, Austria
Açıklama
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.
Dosyalar
bib-0a5eea0c-20bf-4561-a26d-4d6da02bd3ab.txt
Dosyalar
(413 Bytes)
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md5:8cc3558f004ce91d9befd4b85cdec545
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