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Physical Review D

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Collider bounds on indirect dark matter searches: The $W W$ final state

Nicolas Lopez¹, Linda M. Carpenter², Randel Cotta³, Meghan Frate³, Ning Zhou³, and Daniel Whiteson³

¹Massachussets Institute of Technology, Cambridge, Massachusetts 02139, USA
²The Ohio State University, Columbus, Ohio 43210, USA
³Department of Physics and Astronomy, University of California, Irvine, California 92697, USA

Phys. Rev. D 89, 115013 – Published 16 June, 2014

DOI: https://doi.org/10.1103/PhysRevD.89.115013

Abstract

We describe an effective theory of interaction between pairs of dark matter particles (denoted $χ$ ) and pairs of $W$ bosons. Such an interaction could accommodate $χ \bar{χ} \to W W$ processes, which are a major focus of indirect dark matter experiments, as well as $p p \to W^{*} \to W χ \bar{χ}$ processes, which would predict excesses at the LHC in the $W + E_{T}$ final-state. We reinterpret an ATLAS $W + E_{T}$ analysis in the hadronic mode and translate the bounds to the space of indirect detection signals. We also reinterpret the $W + E_{T}$ analysis in terms of Kaluza-Klein graviton emission through the processes $W^{*} \to W G$ and $Z^{*} \to Z G$ in which $G$ is invisible. Finally, the final state is interpreted in terms of a $W^{'}$ model where $W^{'} \to W Z$ , with $W$ decaying hadronically and $Z$ decaying to neutrinos.

Article Text

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