Work

The Transition Density Formalism in the First Compton Computation on $^4$He

Year: 2025

Type: conference-paper

Abstract: The method and results of the first theory description of 4He Compton scattering at nuclear energies is presented, with a focus on figures. It uses the same Compton kernels familiar from proton, deuteron and 3He Compton scattering in Chiral Effective Field Theory with explicit Delta degrees of freedom, applicable between about 50 and 130MeV. The result compares well to data from HIγS, MAXlab and Illinois. The sensitivity of the cross section on the (static) scalar-isoscalar polarisabilities of the nucleon is explored. The project is part of the synergetic international effort of experimentalists and theorists in Compton scattering on one- and few-nucleon systems. An interactive Mathematica notebook of these results is available from [email protected]. A publication [1] contains details and a comprehensive list of references.

Source: International Workshop on Chiral Dynamics (CD)

DOI: 10.22323/1.479.0079

Author: Harald Griesshammer

Institutions: George Washington University, Ruhr University Bochum

Language: English

Topic: Nuclear physics research studies

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Funders: U.S. Department of Energy, George Washington University, Deutsche Forschungsgemeinschaft, Science and Technology Facilities Council

Awards: G5295195422, G5583419562, EFFECTIVE FIELD THEORIES OF NUCLEAR PHYSICS