Detector resolution correction for width of intermediate states in three particle decays

TL;DR

The paper introduces a method to incorporate detector resolution effects into partial wave analysis on an event-by-event basis, improving the accuracy of width measurements of intermediate states in three-particle decays.

Contribution

A novel method for accounting for detector resolution in partial wave analysis, demonstrated on specific J/psi decay channels.

Findings

Method effectively accounts for detector resolution effects.

Applicable to complex three-particle decay analyses.

Enhances precision in measuring intermediate state widths.

Abstract

We propose a method that allows to take into account detector resolution in the partial wave analysis event-by-event fit as a special case. Implementation of the method is discussed and the applicability of the method is studied for the $J/\psi \to K^{*\pm}K^{\mp} \to K^+K^-\pi^0$ and $J/\psi \to K_2(1430)^\pm K^{\mp} \to K^+K^-\pi^0$ decays.