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Träfflista för sökning "WFRF:(Haisch Ulrich) "

Sökning: WFRF:(Haisch Ulrich)

  • Resultat 1-4 av 4
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1.
  • Abercrombie, Daniel, et al. (författare)
  • Dark Matter benchmark models for early LHC Run-2 Searches : Report of the ATLAS/CMS Dark Matter Forum
  • 2020
  • Ingår i: Physics of the Dark Universe. - : Elsevier BV. - 2212-6864. ; 27
  • Tidskriftsartikel (refereegranskat)abstract
    • This document is the final report of the ATLAS-CMS Dark Matter Forum, a forum organized by the ATLAS and CMS collaborations with the participation of experts on theories of Dark Matter, to select a minimal basis set of dark matter simplified models that should support the design of the early LHC Run-2 searches. A prioritized, compact set of benchmark models is proposed, accompanied by studies of the parameter space of these models and a repository of generator implementations. This report also addresses how to apply the Effective Field Theory formalism for collider searches and present the results of such interpretations.
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2.
  • Albert, Andreas, et al. (författare)
  • Recommendations of the LHC Dark Matter Working Group : Comparing LHC searches for dark matter mediators in visible and invisible decay channels and calculations of the thermal relic density
  • 2019
  • Ingår i: Physics of the Dark Universe. - : Elsevier BV. - 2212-6864. ; 26
  • Tidskriftsartikel (refereegranskat)abstract
    • Weakly-coupled TeV-scale particles may mediate the interactions between normal matter and dark matter. If so, the LHC would produce dark matter through these mediators, leading to the familiar “mono-X” search signatures, but the mediators would also produce signals without missing momentum via the same vertices involved in their production. This document from the LHC Dark Matter Working Group suggests how to compare searches for these two types of signals in case of vector and axial-vector mediators, based on a workshop that took place on September 19/20, 2016 and subsequent discussions. These suggestions include how to extend the spin-1 mediated simplified models already in widespread use to include lepton couplings. This document also provides analytic calculations of the relic density in the simplified models and reports an issue that arose when ATLAS and CMS first began to use preliminary numerical calculations of the dark matter relic density in these models.
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4.
  • Haisch, Ulrich, et al. (författare)
  • Determining the CP nature of spin-0 mediators in associated production of dark matter and t(t)over-bar pairs
  • 2017
  • Ingår i: Journal of High Energy Physics (JHEP). - 1126-6708 .- 1029-8479. ; :2
  • Tidskriftsartikel (refereegranskat)abstract
    • In the framework of spin-0 s-channel simplified models, we explore the possibility of assessing the structure of dark matter interactions through the associate production of dark matter and t (t) over bar pairs. To this purpose, final states with two leptons are considered and the kinematic properties of the dilepton system is studied. We develop a realistic analysis strategy and provide a detailed evaluation of the achievable sensitivity for the dark matter signal assuming integrated luminosities of 300 fb(-1) and 3 ab(-1) at the 14TeV LHC. Furthermore, upper limits on the mediator masses for which the two different CP hypotheses can be distinguished are derived. The obtained limits on the signal strengths are finally translated into constraints on the parameter space of two spin-0 simplified models including a scenario with an extended Higgs sector.
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  • Resultat 1-4 av 4

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