QCD Short-distance constraints and hadronic approximations
(2003) In Journal of High Energy Physics- Abstract
- This paper discusses a general class of ladder resummation inspired hadronic approximations. It is found that this approach naturally reproduces many successes of single meson per channel saturation models (e.g. VMD) and NJL based models. In particular the existence of a constituent quark mass and a gap equation follows naturally. We construct an approximation that satisfies a large set of QCD short-distance and large N-c constraints and reproduces many hadronic observables. We show how there exists in general a problem between QCD short-distance constraints for Green Functions and those for form factors and cross-sections following from the quark-counting rule. This problem while expected for Green functions that do not vanish in purely... (More)
- This paper discusses a general class of ladder resummation inspired hadronic approximations. It is found that this approach naturally reproduces many successes of single meson per channel saturation models (e.g. VMD) and NJL based models. In particular the existence of a constituent quark mass and a gap equation follows naturally. We construct an approximation that satisfies a large set of QCD short-distance and large N-c constraints and reproduces many hadronic observables. We show how there exists in general a problem between QCD short-distance constraints for Green Functions and those for form factors and cross-sections following from the quark-counting rule. This problem while expected for Green functions that do not vanish in purely perturbative QCD also persists for many Green functions that are order parameters. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/308507
- author
- Bijnens, Johan LU ; Gamiz, E ; Lipartia, Edisher LU and Prades, J
- organization
- publishing date
- 2003
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- 1/N expansion, chiral lagrangians, phenomenological models, QCD
- in
- Journal of High Energy Physics
- issue
- 4: 055
- publisher
- Springer
- external identifiers
-
- wos:000183526800055
- scopus:23044441054
- ISSN
- 1029-8479
- DOI
- 10.1088/1126-6708/2003/04/055
- language
- English
- LU publication?
- yes
- id
- 9e7762c8-abd3-461a-a501-d8799c48b6a4 (old id 308507)
- date added to LUP
- 2016-04-01 11:41:28
- date last changed
- 2024-01-07 16:50:43
@article{9e7762c8-abd3-461a-a501-d8799c48b6a4, abstract = {{This paper discusses a general class of ladder resummation inspired hadronic approximations. It is found that this approach naturally reproduces many successes of single meson per channel saturation models (e.g. VMD) and NJL based models. In particular the existence of a constituent quark mass and a gap equation follows naturally. We construct an approximation that satisfies a large set of QCD short-distance and large N-c constraints and reproduces many hadronic observables. We show how there exists in general a problem between QCD short-distance constraints for Green Functions and those for form factors and cross-sections following from the quark-counting rule. This problem while expected for Green functions that do not vanish in purely perturbative QCD also persists for many Green functions that are order parameters.}}, author = {{Bijnens, Johan and Gamiz, E and Lipartia, Edisher and Prades, J}}, issn = {{1029-8479}}, keywords = {{1/N expansion; chiral lagrangians; phenomenological models; QCD}}, language = {{eng}}, number = {{4: 055}}, publisher = {{Springer}}, series = {{Journal of High Energy Physics}}, title = {{QCD Short-distance constraints and hadronic approximations}}, url = {{http://dx.doi.org/10.1088/1126-6708/2003/04/055}}, doi = {{10.1088/1126-6708/2003/04/055}}, year = {{2003}}, }