Work

A novel scheme for the wave function renormalization of the composite operators

Year: 2015

Type: article

Abstract: We propose a novel renormalization scheme for the hadronic operators.The renormalization factor of the operator in this scheme is normalized by the correlation function at tree level in coordinate space.If we focus on the pseudo scalar operator, then its renormalization factor is related to the mass renormalization factor of the fermion through the partially conserved axialvector current relation.Using the renormalization factor for the pseudo scalar operator in our scheme, we obtain the mass anomalous dimension of the SU(3) gauge theory coupled to N f = 12 massless fundamental fermions, which has an infrared fixed point (IRFP).The mass anomalous dimension at the IRFP is estimated as γ * m = 0.044 +0.025 -0.024 (stat.)+0.057 -0.032 (syst.).. . . . . . . . .

Source: Progress of Theoretical and Experimental Physics

DOI: 10.1093/ptep/ptv045

Author: E. Itou

Institution: High Energy Accelerator Research Organization

Language: English

Topic: Quantum Chromodynamics and Particle Interactions

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $979

Funder: Yukawa Institute for Theoretical Physics, Kyoto University