Dark matter and collider phenomenology of universal extra dimensions

By D. Hooper, S. Profumo. 2007

381 citations recorded by the source corpus.

Abstract We review the phenomenology of models with flat, compactified extra dimensions where all of the Standard Model fields are allowed to propagate in the bulk, known as Universal Extra Dimensions (UED). UED make for an interesting TeV-scale physics scenario, featuring a tower of Kaluza–Klein (KK) states approximately degenerate in mass at the scale set by the inverse size of the compactification radius. KK parity, the four-dimensional remnant of momentum conservation in the extra dimensions, implies two basic consequences: (1) contributions to Standard Model observables arise only at loop level, and KK states can only be pair-produced at colliders, and (2) the lightest KK particle (LKP) is stable, providing a suitable particle dark matter candidate. After a theoretical overview on extra dimensional models, and on UED in particular, we introduce the model particle spectrum and the constraints from precision electroweak tests and current colliders data. We then give a detailed overview of the LKP dark matter phenomenology, including the LKP relic abundance, and direct and indirect searches. We then discuss the physics of UED at colliders, with particular emphasis on the signatures predicted for the Large Hadron Collider and at a future Linear Collider, as well as on the problem of discriminating between UED and other TeV-scale new physics scenarios, particularly supersymmetry. We propose a set of reference benchmark models, representative of different viable UED realizations. Finally, we collect in the Appendix all the relevant UED Feynman rules, the scattering cross sections for annihilation and coannihilation processes in the early universe and the production cross section for strongly interacting KK states at hadron colliders.

Subfields: Artificial Intelligence, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/419705c125bac821d8ebe99bc4795c7b9a47afa1

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Artificial Intelligence

1. S. Profumo
2. L. Strigari
3. G. Dūda
4. K. Garrett
5. D. Hooper
6. P. Ullio
7. Bryan R. Webber
8. K. Hamilton

In Nuclear and High Energy Physics

1. Atlas Collaboration
2. Cms Collaboration
3. L. Strigari
4. S. Profumo
5. T. Bringmann
6. S. Gieseke
7. Simon Plätzer
8. P. Nason

Citations in the corpus

• Maverick dark matter at colliders (2010, background): “Most of these have studied WIMP candidates within specific theoretical frameworks such as supersymmetry [2–4] or models with warped [5–7] or universal [8–11] extra dimensions.”
• Galactic Searches for Dark Matter (2012, background): “Dark matter candidates also arise from theories of universal extra dimensions (Cheng et al., 2002; Hooper and Profumo, 2007), as well as many others (Duffy and van Bibber, 2009; Feng, 2010b) (see the recent reviews of Bertone et al. (2005) and Bertone (2010) for a more complete list of dark matter…”
• Observation of an anomalous positron abundance in the cosmic radiation (2008, background): “High energy antiparticles such as positrons[5, 6, 7, 8, 9, 10, 11, 12, 13] and antiprotons[2, 14] can be produced during the annihilation or decay of these dark matter particles in our galaxy.”
• Dark Matter: A Primer (2010, background): “Additional motivations for extra dimensional theories of dark matter include proton stability and the cancellation of gauge anomalies from three generations of fermions [54].”
• An Introduction to Particle Dark Matter (2019, background): “…belong to an SU(2) multiplet, then we expect well-defined combinations of ¯ ZZ , ¯ WW final states; • In Universal Extra Dimension (UED) theories [30], DM is the Kaluza-Klein KK-1 The decay/annihilation rate of DM can be constrained indirectly in several ways, a possible classification being the…”
• DarkSUSY 6: an advanced tool to compute dark matter properties numerically (2018, background): “universal extra dimensions [19] or little Higgs models [20]) and have the additional advantage that the observed DM abundance can be understood from a simple thermal production mechanism in the early universe.”
• Scalar multiplet dark matter (2009, neutral): “40 10 v1 [ he p- ph ] 2 4 M ar”
• Herwig++ physics and manual (2008, methodology): “Following similar lines to supersymmetry, the model included in Herwig++ is of a minimal type and has a single compact extra dimension of radius R [51].”