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 present results on the light, strange and charm nucleon scalar and tensorcharges from lattice QCD, using simulations with $N_f=2$ flavors of twistedmass Clover-improved fermions with a physical value of the pion mass. Bothconnected and disconnected contributions are included, enabling us to extractthe isoscalar, strange and charm charges for the first time directly at thephysical point. Furthermore, the renormalization is computed non-perturbativelyfor both isovector and isoscalar quantities. We investigate excited stateeffects by analyzing several sink-source time separations and by employing aset of methods to probe ground state dominance. Our final results for thescalar charges are $g_S^u = 5.20(42)(15)(12)$, $g_S^d = 4.27(26)(15)(12)$,$g_S^s=0.33(7)(1)(4)$, $g_S^c=0.062(13)(3)(5)$ and for the tensor charges$g_T^u = 0.782(16)(2)(13)$, $g_T^d = -0.219(10)(2)(13)$,$g_T^s=-0.00319(69)(2)(22)$, $g_T^c=-0.00263(269)(2)(37)$ in the $\overline{\rmMS}$ scheme at 2~GeV. The first error is statistical, the second is thesystematic error due to the renormalization and the third the systematicarising from possible contamination due to the excited states.

Nucleon scalar and tensor charges using lattice QCD simulations at the physical value of the pion mass