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

Large discrepancies between quasi-free neutron-neutron (nn) cross sectiondata from neutron-deuteron (nd) breakup and theoretical predictions based onstandard nucleon-nucleon (NN) and three-nucleon (3N) forces are pointed out.The nn 1S0 interaction is shown to be dominant in that configuration and has tobe increase to bring theory and data into agreement. Using the next-to-leadingorder (NLO) 1S0 interaction of chiral perturbation theory (chiPT) wedemonstrate that the nn QFS cross section only slightly depends on changes ofthe nn scattering length but is very sensitive to variations of the effectiverange parameter. In order to account for the reported discrepancies one mustdecrease the nn effective range parameter by about 12 % from its value impliedby 19charge symmetry and charge independence of nuclear forces.

The nn quasi-free nd breakup cross section: discrepancies to theory and implications on the 1S0 nn force