A search for high-mass resonances decaying to tau(+)tau(-) in pp collisions at root s=8 TeV with the ATLAS detector [Elektronisk resurs]

<p>ATLAS Collaboration, for complete list of authors see http://dx.doi.org/10.1007/JHEP07(2015)157</p>
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A search for high-mass resonances decaying into tau(+)tau(-) final states using proton-proton collisions at root s = 8 TeV produced by the Large Hadron Collider is presented. The data were recorded with the ATLAS detector and correspond to an integrated luminosity of 19.5-20.3 fb(-1). No statistically significant excess above the Standard Model expectation is observed; 95% credibility upper limits are set on the cross section times branching fraction of Z' resonances decaying into tau(+)tau(-) pairs as a function of the resonance mass. As a result, Z' bosons of the Sequential Standard Model with masses less than 2.02 TeV are excluded at 95% credibility. The impact of the fermionic couplings on the Z' acceptance is investigated and limits are also placed on a Z' model that exhibits enhanced couplings to third-generation fermions.

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Fler titlar av: Aad, G.; Bergeås, Elin Kuutma ...; Brenner, Richard; Buszello, Claus P.; Ekelöf, Tord; Ellert, Mattias; visa fler...; Ferrari, Arnaud; Isaksson, Charlie; Madsen, Alexander; Öhman, Henrik; Pelikan, Daniel; Rangel-Smith, Camill ...; Zwalinski, L.; Uppsala universitet ...; visa färre...
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