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The Pressure of Misalignment Axions: a Difference from WIMPs in Galaxy Formation?
Sacha Davidson
Two populations of axions can contribute to cold dark matter: the classical field produced via the misalignment mechanism, and the modes produced in the decay of strings. The class…
Of Contact Interactions and Colliders
Sacha Davidson, Sebastien Descotes-Genon, Patrice Verdier
The hierarchy of scales which would allow dimension-six contact interactions to parametrise New Physics may not be verified at colliders. Instead, we explore the feasability and us…
Estimated constraints on t-channel Leptoquark exchange from LHC contact interaction searches
Assia Bessaa, Sacha Davidson
The t-channel exchange of a first generation leptoquark could contribute to the cross-section for q q-bar to e+e-. The leptoquark is off-shell, so this process can be sensitive to…
Axions: Bose Einstein Condensate or Classical Field?
Sacha Davidson
The axion is a motivated dark matter candidate, so it would be interesting to find features in Large Scale Structures specific to axion dark matter. Such features were proposed for…
Including the Z in an Effective Field Theory for dark matter at the LHC
Sacha Davidson
An Effective Field Theory for dark matter at a TeV-scale hadron collider should include contact interactions of dark matter with the partons, the Higgs and the Z. This note estimat…