Abstract

We report a new extraction of nucleon resonance couplings using π− photo-production cross sections on the neutron. The world database for the process γn → π−p above 1 GeV has quadrupled with the addition of new differential cross sections from the CEBAF Large Acceptance Spectrometer (CLAS) at Jefferson Lab in Hall B. Differential cross sections from CLAS have been improved with a new final-state interaction determination using a diagrammatic technique taking into account the SAID phenomenological NN and πN final-state interaction amplitudes. Resonance couplings have been extracted and compared to previous determinations. With the addition of these new cross sections, significant changes are seen in the high-energy behavior of the SAID cross sections and amplitudes.

Highlights

  • The GW group is focusing on the study of NN and πN elastic scattering as well as on the study of γN → π(η)N reactions

  • We report a new extraction of nucleon resonance couplings using π− photoproduction cross sections on the neutron

  • The world database for the process γn → π− p above 1 GeV has quadrupled with the addition of new differential cross sections from the CEBAF Large Acceptance Spectrometer (CLAS) at Jefferson Lab in Hall B

Read more

Summary

Introduction

The GW group is focusing on the study of NN and πN elastic scattering as well as on the study of γN → π(η)N reactions. We report a new extraction of nucleon resonance couplings using π− photoproduction cross sections on the neutron. Differential cross sections from CLAS have been improved with a new final-state interaction determination using a diagrammatic technique taking into account the SAID phenomenological NN and πN final-state interaction amplitudes.

Results
Conclusion
Full Text
Paper version not known

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.