The 39th International Symposium on Lattice Field Theory (Lattice 2022)

Muon g-2 with overlap valence fermions

12 Aug 2022, 17:40

20m

CP1-HSZ/0.001 (CP1-HSZ) - HS3 (CP1-HSZ)

Oral Presentation QCD in searches for physics beyond the Standard Model QCD in searches for physics beyond the Standard Model

Speaker

Gen Wang (Centre de Physique Théorique de Marseille)

Description

We present a lattice calculation of the window contribution ($t_0=0.4\mathrm{fm}$, $t_1=1.0\mathrm{fm}$, $\mathrm{\Delta }=0.15\mathrm{fm}$) of the leading order hadronic vacuum polarization contribution to the muon g-2 using overlap valence fermions on 4 physical-point ensembles. Two 2+1 flavor ensembles use the domain wall fermion (DWF) and Iwasaki gauge actions at $a=0.084$ and 0.114 fm, and two 2+1+1 flavor ensembles use the highly improved staggered quark (HISQ) actions and Symanzik gauge actions at $a=0.088$ and 0.121 fm. For $a_{\mathrm{c}\mathrm{o}\mathrm{n},l}^{\mathrm{W}}$, we find that our results on the two smaller lattice spacings are consistent with those using the unitary setup, but those at the two coarser lattice spacings have small differences.

Presentation materials

Lattice_2022_Gen.pdf