Constraints On The sbar-s Asymmetry Of The Proton In Chiral Effective Theory
Pre-published on:
May 04, 2017
Published on:
May 09, 2017
Abstract
We investigate the $s-\bar s$ asymmetry in the proton in chiral effective theory. Unlike previous meson cloud model calculations, which accounted for kaon loop contributions with on-shell intermediate states alone, this work includes off-shell terms and contact interactions, which impact the shape of the $s-\bar s$ difference. We use the hyperon production data and the latest results from global PDF fits to constrain the parameters within Pauli-Villars regularization procedure, which preserves chiral symmetry and Lorentz invariance. We also extract the correction to the NuTeV anomaly from strange asymmetry effect.
DOI: https://doi.org/10.22323/1.281.0294
How to cite
Metadata are provided both in
article format (very
similar to INSPIRE)
as this helps creating very compact bibliographies which
can be beneficial to authors and readers, and in
proceeding format which
is more detailed and complete.