Europhys. Lett.
Volume 62, Number 5, June 2003
Page(s) 677 - 683
Section The physics of elementary particles and fields
Published online 01 May 2003
DOI: 10.1209/epl/i2003-00427-7
Europhys. Lett., 62 (5) , pp. 677-683 (2003)

Flavor symmetry breaking in strongly coupled N=1 supersymmetric SO(Nc) gauge theory with Nf=Nc-2

M. Yasuè

Department of Physics, Tokai University - 1117 KitaKaname Hiratsuka, Kanagawa 259-1292, Japan

(Received 17 January 2003; accepted in final form 2 April 2003)

In the SO(Nc) gauge theory with Nf quarks for Nf=Nc-2, its instanton effects indicate the signal of dynamical flavor symmetry breakdown of SU(Nf) to SO(Nf), which is not described by the conventional "magnetic" degrees of freedom. It is argued that this breaking is well described by our effective superpotential consisting of "electric" quarks and gluons instead of monopoles of SO(Nc). The low-energy particles include the Nambu-Goldstone superfields associated with this breakdown. The proposed superpotential is found to exhibit the holomorphic decoupling property and the anomaly-matching property on a residual chiral U(1) symmetry.

11.15.Tk - Other nonperturbative techniques.
11.30.Rd - Chiral symmetries.
11.30.Pb - Supersymmetry.

© EDP Sciences 2003