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

Crivellin, Andreas; Hoferichter, Martin; Procura, Massimiliano (2014). Accurate evaluation of hadronic uncertainties in spin-independent WIMP-nucleon scattering: Disentangling two- and three-flavor effects. Physical review. D - particles, fields, gravitation, and cosmology, 89(5) Melville, N.Y.: American Physical Society 10.1103/PhysRevD.89.054021

[img] Text
PhysRevD.89.pdf - Published Version
Restricted to registered users only
Available under License Publisher holds Copyright.

Download (257kB) | Request a copy

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.

Item Type:

Journal Article (Original Article)

Division/Institute:

10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC)
08 Faculty of Science > Institute of Theoretical Physics

UniBE Contributor:

Crivellin, Andreas; Hoferichter, Martin and Procura, Massimiliano

Subjects:

500 Science > 530 Physics

ISSN:

1550-7998

Publisher:

American Physical Society

Language:

English

Submitter:

Esther Fiechter

Date Deposited:

24 Nov 2014 15:14

Last Modified:

26 Jun 2016 01:56

Publisher DOI:

10.1103/PhysRevD.89.054021

BORIS DOI:

10.7892/boris.60239

URI:

https://boris.unibe.ch/id/eprint/60239

Actions (login required)

Edit item Edit item
Provide Feedback