In the large N\_c limit, the variables required to analyze the low energy
structure of QCD in the framework of an effective field theory necessarily
include the degrees of freedom of the eta'. We evaluate the decay constants of
the pseudoscalar nonet to one loop within this extended framework and show
that, as a consequence of the anomalous dimension of the singlet axial current,
some of the effective coupling constants depend on the running scale of QCD.
The calculation relies on a simultaneous expansion in powers of momenta, quark
masses and 1/N\_c.
Talk given at the Workshop on Nonperturbative Methods in Quantum Field
Theory, NITP/CSSM, University of Adelaide, Australia, Feb. 1998.
%0 Journal Article
%1 Kaiser1998Pseudoscalar
%A Kaiser, R.
%A Leutwyler, H.
%D 1998
%K eta
%T Pseudoscalar decay constants at large N\_c
%U http://arxiv.org/abs/hep-ph/9806336
%X In the large N\_c limit, the variables required to analyze the low energy
structure of QCD in the framework of an effective field theory necessarily
include the degrees of freedom of the eta'. We evaluate the decay constants of
the pseudoscalar nonet to one loop within this extended framework and show
that, as a consequence of the anomalous dimension of the singlet axial current,
some of the effective coupling constants depend on the running scale of QCD.
The calculation relies on a simultaneous expansion in powers of momenta, quark
masses and 1/N\_c.
Talk given at the Workshop on Nonperturbative Methods in Quantum Field
Theory, NITP/CSSM, University of Adelaide, Australia, Feb. 1998.
@article{Kaiser1998Pseudoscalar,
abstract = {{In the large N\_c limit, the variables required to analyze the low energy
structure of QCD in the framework of an effective field theory necessarily
include the degrees of freedom of the eta'. We evaluate the decay constants of
the pseudoscalar nonet to one loop within this extended framework and show
that, as a consequence of the anomalous dimension of the singlet axial current,
some of the effective coupling constants depend on the running scale of QCD.
The calculation relies on a simultaneous expansion in powers of momenta, quark
masses and 1/N\_c.
Talk given at the Workshop on Nonperturbative Methods in Quantum Field
Theory, NITP/CSSM, University of Adelaide, Australia, Feb. 1998.}},
added-at = {2019-02-23T22:09:48.000+0100},
archiveprefix = {arXiv},
author = {Kaiser, R. and Leutwyler, H.},
biburl = {https://www.bibsonomy.org/bibtex/24013c218d987aa968d9b48b0c70cef4d/cmcneile},
citeulike-article-id = {10681931},
citeulike-linkout-0 = {http://arxiv.org/abs/hep-ph/9806336},
citeulike-linkout-1 = {http://arxiv.org/pdf/hep-ph/9806336},
day = 10,
eprint = {hep-ph/9806336},
interhash = {2158014606c542f0bd3e4d5bc162e2d4},
intrahash = {4013c218d987aa968d9b48b0c70cef4d},
keywords = {eta},
month = jun,
posted-at = {2012-05-18 14:04:35},
priority = {2},
timestamp = {2019-02-23T22:15:27.000+0100},
title = {{Pseudoscalar decay constants at large N\_c}},
url = {http://arxiv.org/abs/hep-ph/9806336},
year = 1998
}