This title appears in the Scientific Report :
2000
Please use the identifier:
http://hdl.handle.net/2128/2381 in citations.
Please use the identifier: http://dx.doi.org/10.1103/PhysRevC.62.054006 in citations.
Radiative pion capture by a nucleon
Radiative pion capture by a nucleon
The differential cross sections for pi (-)p-->gamman and pi (+)n-->gammap are computed up to O(p(3)) in heavy baryon chiral perturbation theory (HBChPT). The expressions at O(p) and O(p(2)) have no free parameters. There are three unknown parameters at O(p(3)), low energy constants of the HBCh...
Saved in:
Personal Name(s): | Fearing, H. W. |
---|---|
Hemmert, T. R. / Lewis, R. / Unkmeir, C. | |
Contributing Institute: |
Institut für Kernphysik; IKP |
Published in: | Physical Review C Physical review / C, 62 62 (2000 2000) 5 5, S. 054006 054006 |
Imprint: |
Woodbury, NY
Inst.
2000
2000-10-20 2000-10-01 |
Physical Description: |
054006 |
DOI: |
10.1103/PhysRevC.62.054006 |
Document Type: |
Journal Article |
Research Program: |
Theoretische Kernphysik |
Series Title: |
Physical Review C
62 |
Subject (ZB): | |
Link: |
OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.1103/PhysRevC.62.054006 in citations.
The differential cross sections for pi (-)p-->gamman and pi (+)n-->gammap are computed up to O(p(3)) in heavy baryon chiral perturbation theory (HBChPT). The expressions at O(p) and O(p(2)) have no free parameters. There are three unknown parameters at O(p(3)), low energy constants of the HBChPT Lagrangian, which are determined by fitting to experimental data. Two acceptable fits are obtained, which can be separated by comparing with earlier dispersion relation calculations of the inverse process. Expressions for the multipoles, with emphasis on the p-wave multipoles, are obtained and evaluated at threshold. Generally the results obtained from the best of the two fits are in good agreement with the dispersion relation predictions. |