24–28 Oct 2022
University of Santiago de Compostela
Europe/Madrid timezone

J/ψ Near-Threshold Photoproduction off the Proton and Neutron with CLAS12

27 Oct 2022, 17:00
30m
Classroom 2, Facultad de Ciencias de la Comunicación (University of Santiago de Compostela)

Classroom 2, Facultad de Ciencias de la Comunicación

University of Santiago de Compostela

Campus Norte, Av. de Castelao, s/n, 15782 Santiago de Compostela, Spain
Oral Contribution P6 Hadron Structure, Spectroscopy, and Dynamics P6 Hadron Structure, Spectroscopy, and Dynamics

Speaker

Mr Richard Tyson (University of Glasgow)

Description

J/ψ near threshold photoproduction plays a key role in the physics program at the Thomas Jefferson National Accelerator Facility (JLab) 12 GeV upgrade due to the wealth of information it has to offer. J/ψ photoproduction proceeds through the exchange of gluons in the t-channel and is expected to provide unique insight about the nucleon gluonic form factor and the nucleon mass radius.

The JLab based CLAS Collaboration, which uses the CEBAF Large Acceptance Spectrometer (CLAS12), aims to measure the J/ψ near threshold photoproduction cross section using both a proton and a deuteron target. The latter further offers the possibility of comparing the proton and neutron gluonic form factors and mass radii in a first measurement of the ratio of the cross sections off a proton or neutron within the deuteron target. The analysis towards these measurements is ongoing and well advanced, with machine learning based techniques for particle and reaction identification already designed and tested on CLAS12 data taken towards these measurements.

This talk will describe the aims and experimental design for the measurement of J/ψ near threshold photoproduction off the proton and neutron with the CLAS12 detector along with the current stage of the data analysis.

Primary author

Mr Richard Tyson (University of Glasgow)

Presentation materials

There are no materials yet.