This title appears in the Scientific Report :
2016
Please use the identifier:
http://dx.doi.org/10.1016/j.physletb.2016.07.068 in citations.
Please use the identifier: http://hdl.handle.net/2128/13613 in citations.
The width of the Roper resonance in baryon chiral perturbation theory
The width of the Roper resonance in baryon chiral perturbation theory
We calculate the width of the Roper resonance at next-to-leading order in a systematic expansion of baryon chiral perturbation theory with pions, nucleons, and the delta and Roper resonances as dynamical degrees of freedom. Three unknown low-energy constants contribute up to the given order. One of...
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Personal Name(s): | Gegelia, Jambul |
---|---|
Meißner, Ulf-G. / Yao, De-Liang (Corresponding author) | |
Contributing Institute: |
Theorie der starken Wechselwirkung; IKP-3 Theorie der Starken Wechselwirkung; IAS-4 |
Published in: | Physics letters / B, 760 (2016) S. 736 - 741 |
Imprint: |
Amsterdam
North-Holland Publ.
2016
|
DOI: |
10.1016/j.physletb.2016.07.068 |
Document Type: |
Journal Article |
Research Program: |
TRR 110: Symmetrien und Strukturbildung in der Quantenchromodynamik Computational Science and Mathematical Methods |
Link: |
OpenAccess OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/13613 in citations.
We calculate the width of the Roper resonance at next-to-leading order in a systematic expansion of baryon chiral perturbation theory with pions, nucleons, and the delta and Roper resonances as dynamical degrees of freedom. Three unknown low-energy constants contribute up to the given order. One of them can be fixed by reproducing the empirical value for the width of the Roper decay into a pion and a nucleon. Assuming that the remaining two couplings of the Roper interaction take values equal to those of the nucleon, the result for the width of the Roper decaying into a nucleon and two pions is consistent with the experimental value. |