NLO corrections to Vector Dark Matter Direct Detection - An update

Santos, Rui; Glaus, Seraina; Mühlleitner, M.; Müller, Jonas; Patel, Shruti

doi:10.22323/1.376.0046

Cited by 1 publication

(2 citation statements)

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“…[29] and updated in ref. [37]. Note that the vector DM model presented in our previous work does not show the tree-level suppression present in the PNGDM, hence the cross section is now calculated by taking the NLO amplitude squared whereas in vector DM model the LO times NLO term was taken.…”

Section: Ew Corrections To the Si Cross Sectionmentioning

confidence: 99%

“…One possible solution is the expansion of the QED subset in terms of the external quark momentum p q yielding an IR safe result as discussed in ref. [37]. However, the U(1) symmetry of the potential leads to the complete cancellation of the QED subset, such that no IR divergencies are present in the final renormalized amplitude of the lower vertex corrections.…”

Section: Lower Vertex (Lov) Correctionsmentioning

confidence: 99%

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Electroweak corrections in a pseudo Nambu-Goldstone Dark Matter model revisited

Glaus

Mühlleitner

Müller

et al. 2020

J. High Energ. Phys.

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Having so far only indirect evidence for the existence of Dark Matter a plethora of experiments aims at direct detection of Dark Matter through the scattering of Dark Matter particles off atomic nuclei. For the correct interpretation and identification of the underlying nature of the Dark Matter constituents higher-order corrections to the cross section of Dark Matter-nucleon scattering are important, in particular in models where the tree-level cross section is negligibly small. In this work we revisit the electroweak corrections to the dark matter-nucleon scattering cross section in a model with a pseudo Nambu-Goldstone boson as the Dark Matter candidate. Two calculations that already exist in the literature, apply different approaches resulting in different final results for the cross section in some regions of the parameter space leading us to redo the calculation and analyse the two approaches to clarify the situation. We furthermore update the experimental constraints and examine the regions of the parameter space where the cross section is above the neutrino floor but which can only be probed in the far future.

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Section: Ew Corrections To the Si Cross Sectionmentioning

confidence: 99%

Section: Lower Vertex (Lov) Correctionsmentioning

confidence: 99%