Hadronization and Color Transparency

TL;DR

This paper reviews hadron production in nuclear environments using a string-breaking model and quantum-kinetic transport, demonstrating good agreement with experimental data and proposing new avenues to observe color transparency effects.

Contribution

It introduces a linear time-dependence for hadron formation and final state interactions, successfully matching experimental data without parameter tuning.

Findings

Linear time-dependence describes hadronization data well

Good agreement with HERMES and JLAB data

Proposes new experiments to observe color transparency effects

Abstract

In this article we review our work on the production of hadrons in the nuclear environment. We work with a string-breaking model for the initial production of hadrons and with a quantum-kinetic transport model (GiBUU) to describe the final state interactions of the newly formed (pre)hadrons. The latter are determined both by the formation times and by the time-development of the hadron-hadron cross section. We first show that only a linear time-dependence is able to describe the available hadronization data. We then compare with detailed data from HERMES and JLAB; very good agreement is reached in all reactions studied without any tuning of parameters. We also repeat predictions of spectra for pions and kaons at JLAB@12GeV. We finally explain the absence of CT effects in the recent experiment on proton transparencies in quasielastic (QE) events on nuclei. We propose to look instead for CT effects on protons in semi-inclusive DIS (SIDIS) events.