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 calculate chiral corrections to the octet axial currents through ${\calO}(p^3)$ using baryon chiral perturbation theory (BCPT). The relativistic BCPTframework allows one to sum an infinite series of recoil corrections at a givenorder in the chiral expansion. We also include SU(3)-breaking operatorsoccuring at ${\cal O}(p^2)$ not previously considered. We determine thecorresponding low-energy constants (LEC's) from hyperon semileptonic decay datausing a variety of infrared regularization schemes. We find that the chiralexpansion of the axial currents does not display the proper convergencebehavior, regardless of which scheme is chosen. We explore the implications ofour analysis for determinations of the strange quark contribution to thenucleon spin, $\Delta s$.Comment: RevTex, 19 pages + 2 PS figure

Recoil order chiral corrections to baryon octet axial vector currents