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Roman Pasechnik

Senior lecturer

Typical working day..

Vector-like technineutron Dark Matter: is a QCD-type Technicolor ruled out by XENON100?

Author

  • Roman Pasechnik
  • Vitaly Beylin
  • Vladimir Kuksa
  • Grigory Vereshkov

Summary, in English

One of the specific predictions of a new strongly coupled dynamics at a TeV scale is the existence of stable vector-like technibaryon states so that the lightest neutral one could serve as a Dark Matter candidate. We study the latter hypothesis in the QCD-type technicolor with SU (3)(TC) confined group and one SU (2)(W) doublet of vector-like techniquarks consistent with electroweak precision constraints and test it against the existing Dark Matter astrophysics data. We discuss the most stringent Dark Matter constraints on weak interactions of technibaryons in SU (3)(TC) technicolor and possible implications of these findings for the cosmological evolution of relic technineutrons. We conclude that vector-like techniquark sectors with an odd group of confinement SU(2n + 1)(TC), n = 1, 2, ... and with ordinary vector-like weak SU (2)(W) interactions are excluded by XENON100 data under the assumption of technibaryon number conservation in the modern Universe allowing for an even technicolor group SU (2n)(TC) only.

Department/s

  • Theoretical Particle Physics

Publishing year

2014

Language

English

Publication/Series

European Physical Journal C. Particles and Fields

Volume

74

Issue

2

Document type

Journal article

Publisher

Springer

Topic

  • Subatomic Physics

Status

Published

ISBN/ISSN/Other

  • ISSN: 1434-6044