Electric Polarizability of Charged Kaons from Lattice QCD Four-Point Functions

TL;DR

This paper investigates the electric polarizability of charged kaons using lattice QCD four-point functions as an alternative to the background field method, providing preliminary results from connected quark-line diagrams.

Contribution

It introduces a novel lattice QCD approach using four-point functions to determine kaon polarizability, bypassing the background field method.

Findings

Preliminary results obtained from connected quark-line diagrams.

Method successfully computes the elastic form factor (charge radius).

Demonstrates feasibility of using four-point functions for polarizability calculations.

Abstract

We study the electric polarizability of a charged kaon from four-point functions in lattice QCD as an alternative to the background field method. Lattice four-point correlation functions are constructed from quark and gluon fields to be used in Monte Carlo simulations. The elastic form factor (charge radius) is needed in the method which can be obtained from the same four-point functions at large current separations. Preliminary results from the connected quark-line diagrams are presented.