منابع مشابه
Experimental considerations motivated by the diphoton excess at the LHC
We consider the immediate or near-term experimental opportunities offered by some scenarios that could explain the new diphoton excess at the LHC. If the excess is due to a new particle Xs at 750 GeV, additional new particles are required, providing further signals. If connected with naturalness, the Xs may be produced in top partner decays. Then a t ′t̄′ signal, with t′ → tXs and Xs → gg domina...
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In this thesis, we will conduct a search for physics beyond the Standard Model by introducing into it, via the effective Lagrangian approach, a new qqγγ contract interaction. The effects of this new interaction on the distribution of invariant masses of diphotons will be assessed via the production of Monte Carlo simulations at two values of the associated mass scale Λ, and a corresponding Mont...
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We analyze the potentiality of hadron colliders to search for large extra dimensions via the production of photon pairs. The virtual exchange of Kaluza–Klein gravitons can significantly enhance this processes provided the quantum gravity scale (MS) is in the TeV range. We studied in detail the subprocesses qq̄ → γγ and gg → γγ taking into account the complete Standard Model and graviton contribu...
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Discovery potentials for extra neutral interactions at the Large Hadron Collider in forthcoming experiments are analyzed using resonant leptoproduction. For this purpose we use high precision next-to-next-to-leading order (NNLO) determinations of the QCD background in this channel, at the tail of the Drell-Yan distributions, in the invariant mass region around 0.8 < Q < 2.5 TeV. We focus our an...
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In this contribution the new event generation framework SHERPA will be presented, which aims at a full simulation of events at current and future high-energy experiments. Some first results exemplify its capabilities. Experiments at particle colliders are the most prominent way of testing the basic structure of matter at shortest distances and the dynamics underlying the interactions of its fun...
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ژورنال
عنوان ژورنال: Journal of High Energy Physics
سال: 2016
ISSN: 1029-8479
DOI: 10.1007/jhep08(2016)018