Search for Higgs bosons decaying to aa in the μμττ final state in pp collisions at √s = 8  TeV with the ATLAS experiment

ATLAS Collaboration, for complete list of authors see http://dx.doi.org/10.1103/PhysRevD.92.052002Title in Web of Science: Search for Higgs bosons decaying to aa in the mu mu tau tau final state in pp collisions at root s=8 TeV with the ATLAS experiment
A search for the decay to a pair of new particles of either the 125 GeV Higgs boson (h) or a second charge parity (CP)-even Higgs boson (H) is presented. The data set corresponds to an integrated luminosity of 20.3 fb−1 of pp collisions at √s=8 TeV recorded by the ATLAS experiment at the LHC in 2012. The search was done in the context of the next-to-minimal supersymmetric standard model, in which the new particles are the lightest neutral pseudoscalar Higgs bosons (a). One of the two a bosons is required to decay to two muons while the other is required to decay to two τ leptons. No significant excess is observed above the expected backgrounds in the dimuon invariant mass range from 3.7 to 50 GeV. Upper limits are placed on the production of h→aa relative to the standard model gg→h production, assuming no coupling of the a boson to quarks. The most stringent limit is placed at 3.5% for ma=3.75 GeV. Upper limits are also placed on the production cross section of H→aa from 2.33 to 0.72 pb, for fixed ma=5 GeV with mH ranging from 100 to 500 GeV.

Bergeås Kuutmann, Elin,1980-Uppsala universitet,Högenergifysik(Swepub:uu)elibe340 (author)
Brenner, RichardUppsala universitet,Högenergifysik(Swepub:uu)richbren (author)
Buszello, Claus P.Uppsala universitet,Högenergifysik(Swepub:uu)clabu867 (author)
Ekelöf, TordUppsala universitet,Högenergifysik(Swepub:uu)tordeke (author)
Ellert, MattiasUppsala universitet,Högenergifysik(Swepub:uu)mel03009 (author)
Ferrari, Arnaud,1973-Uppsala universitet,Högenergifysik(Swepub:uu)arfer499 (author)
Isaksson, CharlieUppsala universitet,Högenergifysik(Swepub:uu)chais294 (author)
Madsen, AlexanderUppsala universitet,Högenergifysik(Swepub:uu)alema566 (author)
Öhman, HenrikUppsala universitet,Högenergifysik(Swepub:uu)henoh739 (author)
Pelikan, DanielUppsala universitet,Högenergifysik(Swepub:uu)danpe883 (author)
Rangel-Smith, CamillaUppsala universitet,Högenergifysik(Swepub:uu)camra302 (author)
Zwalinski, L. (author)
Uppsala universitetHögenergifysik (creator_code:org_t)

By the author/editor: Aad, G.; Bergeås Kuutmann ...; Brenner, Richard; Buszello, Claus ...; Ekelöf, Tord; Ellert, Mattias; show more...; Ferrari, Arnaud, ...; Isaksson, Charli ...; Madsen, Alexande ...; Öhman, Henrik; Pelikan, Daniel; Rangel-Smith, Ca ...; Zwalinski, L.; show less...

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