Nucleon Decay Matrix Elements with N_f=0 and 2 Domain-Wall Quarks
Yasumichi Aoki (for the RBC collaboration)
TL;DR
This paper calculates nucleon decay matrix elements using domain-wall fermions, employing non-perturbative renormalization, and investigates both quenched and dynamical quark effects on key parameters.
Contribution
It provides the first non-perturbative renormalization of three-quark operators for nucleon decay with domain-wall fermions, including dynamical quark effects.
Findings
Non-perturbative renormalization of operators achieved
Dynamical quark effects on alpha and beta parameters analyzed
Comparison between quenched and unquenched results presented
Abstract
The nucleon decay matrix elements of three-quark operators are calculated with domain-wall fermions. Operators are renormalized non-perturbatively to match the MS bar (NDR) scheme at NLO. Quenched simulation studies involve both direct measurement of the matrix elements and the chiral Lagrangian parameters, alpha and beta. We also report on the dynamical quark effects on these parameters.
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Taxonomy
TopicsQuantum Chromodynamics and Particle Interactions · Superconducting Materials and Applications · Particle accelerators and beam dynamics