Year: 2025
Type: article
Abstract: Based on our recent analysis of the hadronic matrix element of the stress-energy tensor in covariant light-front dynamics, we extract the charmonium gravitational form factor D ( Q 2 ) from shear stress T 12 . This is in contrast to our recent work using the (light-front) energy density T + − . Indeed, by comparing these two currents, we identify terms that are responsible for the violation of the current conservation. Numerical results based on basis light-front quantization show that the violation effects are small, and the D term extracted from the two currents are close to each other, hence validating our previous work using T + − .
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Funders: National Natural Science Foundation of China, Chinese Academy of Sciences, Gansu Education Department, National Key Research and Development Program of China, Bureau of Frontier Sciences and Education, Chinese Academy of Sciences, Special Fund Project of Guiding Scientific and Technological Innovation Development of Gansu Province
OpenAlex ID: W4409801079