Parity Doubling and the S Parameter below the Conformal Window

被引：31

作者：

Appelquist, T. ^{[1
]}

Babich, R. ^{[2
]}

Brower, R. C. ^{[2
]}

Cheng, M. ^{[3
]}

Clark, M. A. ^{[4
]}

Cohen, S. D. ^{[2
]}

Fleming, G. T. ^{[1
]}

Kiskis, J. ^{[5
]}

Lin, M. F. ^{[1
]}

Neil, E. T. ^{[1
]}

Osborn, J. C. ^{[6
]}

Rebbi, C. ^{[2
]}

Schaich, D. ^{[2
]}

Vranas, P. M. ^{[3
]}

机构：

[1] Yale Univ, Dept Phys, Sloane Lab, New Haven, CT 06520 USA

[2] Boston Univ, Dept Phys, Boston, MA 02215 USA

[3] Lawrence Livermore Natl Lab, Phys Sci Directorate, Livermore, CA 94550 USA

[4] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA

[5] Univ Calif Davis, Dept Phys, Davis, CA 95616 USA

[6] Argonne Leadership Comp Facil, Argonne, IL 60439 USA

来源：

PHYSICAL REVIEW LETTERS | 2011年 / 106卷 / 23期

基金：

美国国家科学基金会;

关键词：

PHYSICS; QCD;

D O I：

10.1103/PhysRevLett.106.231601

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We describe a lattice simulation of the masses and decay constants of the lowest-lying vector and axial resonances, and the electroweak S parameter, in an SU(3) gauge theory with N(f) = 2 and 6 fermions in the fundamental representation. The spectrum becomes more parity doubled and the S parameter per electroweak doublet decreases when N(f) is increased from 2 to 6, motivating study of these trends as N(f) is increased further, toward the critical value for transition from confinement to infrared conformality.

引用

页数：4

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