scholarly journals Light scalar and vector mesons in the large Nc limit from unitarized chiral perturbation theory

2006 ◽  
Author(s):  
José R. Pelaez
Keyword(s):  
Perturbation Theory ◽  
Chiral Perturbation Theory ◽  
Vector Mesons ◽  
Chiral Perturbation ◽  
Light Scalar

scholarly journals Chiral Perturbation Theory for Vector Mesons

1995 ◽  
Vol 75 (12) ◽  
pp. 2272-2275 ◽  
Author(s):  
Elizabeth Jenkins ◽  
Aneesh V. Manohar ◽  
Mark B. Wise
Keyword(s):  
Perturbation Theory ◽  
Chiral Perturbation Theory ◽  
Vector Mesons ◽  
Chiral Perturbation

scholarly journals Power counting in baryon chiral perturbation theory including vector mesons

2003 ◽  
Vol 575 (1-2) ◽  
pp. 11-17 ◽  
Author(s):  
Thomas Fuchs ◽  
Matthias R. Schindler ◽  
Jambul Gegelia ◽  
Stefan Scherer
Keyword(s):  
Perturbation Theory ◽  
Chiral Perturbation Theory ◽  
Power Counting ◽  
Vector Mesons ◽  
Chiral Perturbation

scholarly journals Quenched chiral perturbation theory for vector mesons

1997 ◽  
Vol 55 (5) ◽  
pp. 3092-3100 ◽  
Author(s):  
Michael Booth ◽  
George Chiladze ◽  
Adam F. Falk
Keyword(s):  
Perturbation Theory ◽  
Chiral Perturbation Theory ◽  
Vector Mesons ◽  
Chiral Perturbation

scholarly journals Dilaton chiral perturbation theory and applications

2022 ◽  
Vol 258 ◽  
pp. 08004
Author(s):  
Maarten Golterman ◽  
Yigal Shamir
Keyword(s):  
Perturbation Theory ◽  
Chiral Perturbation Theory ◽  
Large Mass ◽  
Fermion Mass ◽  
Lattice Data ◽  
Chiral Perturbation ◽  
Goldstone Bosons ◽  
Systematic Expansion ◽  
Light Scalar ◽  
Future Work

We review dilaton chiral perturbation theory (dChPT), the effective low-energy theory for the light sector of near-conformal, confining theories. dChPT provides a systematic expansion in both the fermion mass and the distance to the conformal window. It accounts for the pions and the light scalar, the approximate Nambu–Goldstone bosons for chiral and scale symmetry, respectively. A unique feature of dChPT is the existence of a large-mass regime in which the theory exhibits approximate hyperscaling, while the expansion nevertheless remains systematic. We discuss applications to lattice data, presenting successes as well as directions for future work.

scholarly journals LIGHT SCALARS AS TETRAQUARKS OR TWO-MESON STATES FROM LARGE-Nc AND UNITARIZED CHIRAL PERTURBATION THEORY

2004 ◽  
Vol 19 (39) ◽  
pp. 2879-2894 ◽  
Author(s):  
J. R. PELÁEZ
Keyword(s):  
Perturbation Theory ◽  
Scattering Amplitudes ◽  
Chiral Perturbation Theory ◽  
Low Energy ◽  
Effective Theory ◽  
Chiral Perturbation ◽  
Large N ◽  
Light Scalar ◽  
Meson States

By means of unitarized Chiral Perturbation Theory it is possible to obtain a remarkable description of meson–meson scattering amplitudes up to 1.2 GeV, and generate poles associated to scalar and vector resonances. Since Chiral Perturbation Theory is the QCD low energy effective theory, it is then possible to study its large-N c limit where [Formula: see text] states are easily identified. The vectors thus generated follow closely a [Formula: see text] behavior, whereas the light scalar poles follow the large-N c behavior expected for a dominant tetraquark or two-meson structure.

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