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27 April 2024

» arxiv » 1301.1693

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Lattice calculation of composite dark matter form factors
T. Appelquist ; R. C. Brower ; M. I. Buchoff ; M. Cheng ; S. D. Cohen ; G. T. Fleming ; J. Kiskis ; M. F. Lin ; E. T. Neil ; J. C. Osborn ; C. Rebbi ; D. Schaich ; C. Schroeder ; S. N. Syritsyn ; G. Voronov ; P. Vranas ; J. Wasem ;
Date:	8 Jan 2013
Abstract:	Composite dark matter candidates, which can arise from new strongly-coupled sectors, are well-motivated and phenomenologically interesting, particularly in the context of asymmetric generation of the relic density. In this work, we employ lattice calculations to study the electromagnetic form factors of electroweak-neutral dark-matter baryons for a three-color, QCD-like theory with Nf = 2 and 6 degenerate fermions in the fundamental representation. We calculate the (connected) charge radius and anomalous magnetic moment, both of which can play a significant role for direct detection of composite dark matter. We find minimal Nf dependence in these quantities. We generate mass-dependent cross-sections for dark matter-nucleon interactions and use them in conjunction with experimental results from XENON100, excluding dark matter candidates of this type with masses below 10 TeV.
Source:	arXiv, 1301.1693
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