Measurement of the $D^{*\pm}$ Cross Section using a Soft-Pion Analysis in Two-Photon Processes

TL;DR

This paper reports the measurement of the differential cross section for $D^{* ext{±}}$ production in two-photon processes at TRISTAN, using a soft-pion analysis to improve understanding of charm quark production.

Contribution

The study introduces a novel soft-pion analysis method to measure $D^{* ext{±}}$ cross sections in two-photon interactions at TRISTAN energies.

Findings

Measured differential cross section at $ar{s} = 58.1$ GeV.

Used 198 pb$^{-1}$ of data for analysis.

Demonstrated the effectiveness of soft-pion analysis in charm production studies.

Abstract

The differential cross section of $d\sigma(e^+e^-\to e^+e^-D^{*\pm}X)/dP_T$ was measured using a soft-pion analysis of $D^{*\pm}\to \pi_s^\pm D^0(\bar{D^0})$ at TRISTAN. The average $\sqrt{s}$ was 58.1 GeV and the integrated luminosity used in this analysis was 198 pb$^{-1}$, respectively.