English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We show how to avoid unnecessary and uncontrolled assumptions usually made inthe literature about soft SU(3) flavor symmetry breaking in determining thetwo-flavor nucleon matrix elements relevant for direct detection of WIMPs.Based on SU(2) Chiral Perturbation Theory, we provide expressions for theproton and neutron scalar couplings $f_u^{p,n}$ and $f_d^{p,n}$ with thepion-nucleon sigma-term as the only free parameter, which should be used in theanalysis of direct detection experiments. This approach for the first timeallows for an accurate assessment of hadronic uncertainties in spin-independentWIMP-nucleon scattering and for a reliable calculation of isospin-violatingeffects. We find that the traditional determinations of $f_u^p-f_u^n$ and$f_d^p-f_d^n$ are off by a factor of 2.

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