QCD Shortdistance 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 shortdistance and large Nc constraints and reproduces many hadronic observables. We show how there exists in general a problem between QCD shortdistance constraints for Green Functions and those for form factors and crosssections following from the quarkcounting 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 shortdistance and large Nc constraints and reproduces many hadronic observables. We show how there exists in general a problem between QCD shortdistance constraints for Green Functions and those for form factors and crosssections following from the quarkcounting 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:
http://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
 11266708
 DOI
 10.1088/11266708/2003/04/055
 language
 English
 LU publication?
 yes
 id
 9e7762c8abd3461aa501d8799c48b6a4 (old id 308507)
 date added to LUP
 20070824 08:25:04
 date last changed
 20190106 05:46:00
@article{9e7762c8abd3461aa501d8799c48b6a4, 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 shortdistance and large Nc constraints and reproduces many hadronic observables. We show how there exists in general a problem between QCD shortdistance constraints for Green Functions and those for form factors and crosssections following from the quarkcounting 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 = {11266708}, keyword = {1/N expansion,chiral lagrangians,phenomenological models,QCD}, language = {eng}, number = {4: 055}, publisher = {Springer}, series = {Journal of High Energy Physics}, title = {QCD Shortdistance constraints and hadronic approximations}, url = {http://dx.doi.org/10.1088/11266708/2003/04/055}, year = {2003}, }