Accurate evaluation of hadronic uncertainties in spin-independent WIMP-nucleon scattering: Disentangling two- and three-flavor effects

By Andreas Crivellin, M. Hoferichter, M. Procura. 2013

143 citations recorded by the source corpus.

We show how to avoid unnecessary and uncontrolled assumptions usually made in the literature about soft SU(3) flavor symmetry breaking in determining the two-flavor nucleon matrix elements relevant for direct detection of weakly interacting massive particles (WIMPs). Based on SU(2) chiral perturbation theory, we provide expressions for the proton and neutron scalar couplings fp,nu and fp,nd with the pion-nucleon σ term as the only free parameter, which should be used in the analysis of direct detection experiments. This approach for the first time allows for an accurate assessment of hadronic uncertainties in spin-independent WIMP-nucleon scattering and for a reliable calculation of isospin-violating effects. We find that the traditional determinations of Vfpu−fnu and fpd−fnd are off by a factor of 2.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/cb53219e06be1a7646df2fefeb2392d3a3e7886d

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In Nuclear and High Energy Physics

1. M. Raidal
2. G. Arcadi
3. Abdelhak Djouadi
4. Andreas Crivellin
5. S. Davidson
6. G. M. Pruna
7. A. Karam
8. A. Signer

Citations in the corpus

• FLAG Review 2019 (2019, unknown): “[953].”
• Renormalisation-group improved analysis of μ → e processes in a systematic effective-field-theory approach (2017, methodology): “Following [43], the values of the up- and down-quark scalar couplings f (u/d) Sp/n from [44] (based on the two-flavour chiral perturbation theory framework of [45]) are used.”
• Dark Matter through the Higgs portal (2019, background): “The parameters f u,d,s can be determined from pion–nucleon scattering [271–273].”
• Dark matter and neutrino masses from a scale-invariant multi-Higgs portal (2015, background): “303 [101, 112] is the nucleon form factor (see also [113–115]).”