This title appears in the Scientific Report :
2015
Please use the identifier:
http://dx.doi.org/10.1140/epjc/s10052-015-3728-7 in citations.
Please use the identifier: http://hdl.handle.net/2128/9756 in citations.
Baryon chiral perturbation theory extended beyond the low-energy region
Baryon chiral perturbation theory extended beyond the low-energy region
We consider an extension of the one-nucleon sector of baryon chiral perturbation theory beyond the low-energy region. The applicability of this approach for higher energies is restricted to small scattering angles, i.e. the kinematical region, where the quark structure of hadrons cannot be resolved....
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Personal Name(s): | Epelbaum, E. |
---|---|
Gegelia, Jambul (Corresponding author) / Meißner, Ulf-G. / Yao, Deliang | |
Contributing Institute: |
Theorie der Starken Wechselwirkung; IAS-4 Theorie der starken Wechselwirkung; IKP-3 |
Published in: | The @European physical journal / C, 75 (2015) 10, S. 499 |
Imprint: |
Berlin
Springer
2015
|
DOI: |
10.1140/epjc/s10052-015-3728-7 |
PubMed ID: |
26516302 |
Document Type: |
Journal Article |
Research Program: |
Computational Science and Mathematical Methods |
Link: |
OpenAccess OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/9756 in citations.
We consider an extension of the one-nucleon sector of baryon chiral perturbation theory beyond the low-energy region. The applicability of this approach for higher energies is restricted to small scattering angles, i.e. the kinematical region, where the quark structure of hadrons cannot be resolved. The main idea is to re-arrange the low-energy effective Lagrangian according to a new power counting and to exploit the freedom of the choice of the renormalization condition for loop diagrams. We generalize the extended on-mass-shell scheme for the one-nucleon sector of baryon chiral perturbation theory by choosing a sliding scale, that is, we expand the physical amplitudes around kinematical points beyond the threshold. This requires the introduction of complex-valued renormalized coupling constants, which can be either extracted from experimental data, or calculated using the renormalization group evolution of coupling constants fixed in threshold region. |