期刊
PHYSICS LETTERS B
卷 755, 期 -, 页码 426-432出版社
ELSEVIER
DOI: 10.1016/j.physletb.2016.02.049
关键词
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资金
- ERC advanced grant Higgs@LHC
- European Union FP7 ITN INVISIBLES and MassTeV
- Spanish MICINN's Consolider-Ingenio Programme under grant Multi-Dark [CSD2009-00064]
- France-US PICS [06482]
- LIA-TCAP of CNRS
- [FPA2010-17747]
A resonance with a mass of approximately 750 GeV has recently been observed at the LHC in its diphoton decay. If this state is not simply a statistical fluctuation which will disappear with more data, it could have important implications not only for particle physics but also for cosmology. In this note, we analyze the implications of such a resonance for the dark matter (DM). Assuming a spin-1/2 DM particle, we first verify that indeed the correct relic density can be obtained for a wide range of the particle mass and weak scale coupling, that are compatible with present data. We then show that the combination of near future direct and indirect detection experiments will allow to probe the CP-nature of the mediator resonance, i.e. discriminate whether it is a scalar or a pseudoscalar like particle. (C) 2016 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license.
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