LHC Signals for a SuperUnified Theory of Dark Matter

By N. Arkani-Hamed, N. Weiner. 2008

289 citations recorded by the source corpus.

A new theory of WIMP Dark Matter has been proposed, motivated directly by striking Data from the PAMELA and ATIC collaborations. The WIMP is taken to be charged under a hidden gauge symmetry GDark, broken near the GeV scale; this also provides the necessary ingredients for the ``exciting and ``inelastic Dark Matter interpretations of the INTEGRAL and DAMA signals. In this short note we point out the consequences of the most straightforward embedding of this simple picture within low-energy SUSY, in which GDark breaking at the GeV scale arises naturally through radiative corrections, or Planck-suppressed operators. The theory predicts major additions to SUSY signals at the LHC. A completely generic prediction is that GDark particles can be produced in cascade decays of MSSM superpartners, since these end with pairs of MSSM LSP's that in turn decay into the true LSP and other particles in the dark sector. In turn, the lightest GeV-scale dark Higgses and gauge bosons eventually decay back into light SM states, and dominantly into leptons. Therefore, a large fraction of all SUSY events will contain at least two ``lepton jets'': collections of n ≥ 2 leptons, with small angular separations and GeV scale invariant masses. Furthermore, if the Dark Matter sector is directly charged under the Standard Model, the success of gauge coupling unification implies the presence of new long-lived colored particles that can be copiously produced at the LHC.

Subfields: Artificial Intelligence, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/f2856d6c6bd33fb200765c69d7c3d9db8dec115d

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Citations in the corpus

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A facility to search for hidden particles at the CERN SPS: the SHiP physics case (2015, methodology): “1 Setup In much the same way that supersymmetry can stabilize the electroweak scale against large quantum corrections, it can also stabilize the mass of a light Abelian vector boson [202].”
The 511 keV emission from positron annihilation in the Galaxy (2010, background): “This scenario has also been invoked to explain other observables such as the DAMA/LIBRA signal or the WMAP ”haze”23 (Hooper et al., 2007, Finkbeiner et al., 2008) and the PAMELA e+ excess (Arkani-Hamed and Weiner, 2008).”
Probing dark forces and light hidden sectors at low-energy e+e- colliders (2009, background): “The discussion of Section 3 is similar in spirit to the hadron collider phenomenology for Hidden Valleys [18, 19, 20] and Higgsed dark-sector models [8, 21, 22].”
The Dark Photon (2020, background): “…within the broad heading of string compactification (Abel and Schofield, 2004; Abel et al., 2008; Dienes et al., 1997; Goodsell, 2009; Goodsell et al., 2009; Heckman and Vafa, 2011), or in scenarios of SUSY breaking (Arkani-Hamed and Weiner, 2008) and hidden valley (Chan et al., 2012).”
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Non-abelian dark sectors and their collider signatures (2009, unknown): “[ 28 ] where DM is charged under the SM gauge group.”