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22-28 July 2018
Kellogg Hotel and Conference Center
EST timezone

Updates of Nucleon Form Factors from Clover-on-HISQ Formulation

Jul 26, 2018, 9:30 AM
20m
106 (Kellogg Hotel and Conference Center)

106

Kellogg Hotel and Conference Center

219 S Harrison Rd, East Lansing, MI 48824
Hadron Structure Hadron Structure

Speaker

Dr Yong-Chull Jang (Brookhaven National Laboratory)

Description

We update the nucleon axial, electric, and magnetic form factors obtained from Clover-on-HISQ lattice formulation. Previous results from the $2+1+1$-flavor HISQ ensembles are extended by analyzing more ensembles to cover $a \approx 0.15, 0.12, 0.09, 0.06\,\mathrm{fm}$, $M_\pi \approx 310, 220, 130\,\mathrm{MeV}$, and $ 3.3 < M_\pi L < 5.5$. All data are bias corrected with the AMA method. With higher statistics, we control excited-states contamination by including four states in two-point correlator fits and three states in three-point correlator fits. The axial and electromagnetic charge radii and the magnetic moment after chiral-continuum-finite volume extrapolation are compared with phenomenological data.

Primary author

Dr Yong-Chull Jang (Brookhaven National Laboratory)

Co-authors

Dr Boram Yoon (Los Alamos National Laboratory) Prof. Huey-Wen Lin (MSU) Dr Rajan Gupta (Los Alamos National Lab) Dr Tanmoy Bhattacharya (Los Alamos National Laboratory)

Presentation Materials