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Title: Two-point function of strangeness-carrying vector currents in two-loop chiral perturbation theory

Abstract

We calculate the correlator between two external vector currents having the quantum numbers of a charged kaon. We give the renormalized expression to two loops in standard chiral perturbation theory in the isospin limit, which, as a physical result, is finite and scale independent. Applications include a low energy theorem, valid at two loop order, of a flavor breaking combination of vector current correlators, as well as a determination of the phenomenologically relevant finite O(p{sup 6})-counterterm combination Q{sub V} by means of inverse moment finite energy sum rules. This determination is less sensitive to isospin-breaking effects than previous attempts. (c) 2000 The American Physical Society.

Authors:
 [1];  [2];  [3]
  1. Physics Department, University of Washington, Seattle, Washington 98195-1560 (United States)
  2. (Switzerland)
  3. Institute for Theoretical Physics, University of Zuerich, 8057 Zuerich, (Switzerland)
Publication Date:
OSTI Identifier:
20216472
Resource Type:
Journal Article
Journal Name:
Physical Review. D, Particles Fields
Additional Journal Information:
Journal Volume: 61; Journal Issue: 11; Other Information: PBD: 1 Jun 2000; Journal ID: ISSN 0556-2821
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; QUANTUM CHROMODYNAMICS; CORRELATION FUNCTIONS; CHIRAL SYMMETRY; STRANGENESS; PERTURBATION THEORY; RENORMALIZATION; ISOSPIN; FLAVOR MODEL; THEORETICAL DATA

Citation Formats

Duerr, Stephan, Particle Theory Group, Paul Scherrer Institute, 5232 Villigen,, and Kambor, Joachim. Two-point function of strangeness-carrying vector currents in two-loop chiral perturbation theory. United States: N. p., 2000. Web. doi:10.1103/PhysRevD.61.114025.
Duerr, Stephan, Particle Theory Group, Paul Scherrer Institute, 5232 Villigen,, & Kambor, Joachim. Two-point function of strangeness-carrying vector currents in two-loop chiral perturbation theory. United States. doi:10.1103/PhysRevD.61.114025.
Duerr, Stephan, Particle Theory Group, Paul Scherrer Institute, 5232 Villigen,, and Kambor, Joachim. Thu . "Two-point function of strangeness-carrying vector currents in two-loop chiral perturbation theory". United States. doi:10.1103/PhysRevD.61.114025.
@article{osti_20216472,
title = {Two-point function of strangeness-carrying vector currents in two-loop chiral perturbation theory},
author = {Duerr, Stephan and Particle Theory Group, Paul Scherrer Institute, 5232 Villigen, and Kambor, Joachim},
abstractNote = {We calculate the correlator between two external vector currents having the quantum numbers of a charged kaon. We give the renormalized expression to two loops in standard chiral perturbation theory in the isospin limit, which, as a physical result, is finite and scale independent. Applications include a low energy theorem, valid at two loop order, of a flavor breaking combination of vector current correlators, as well as a determination of the phenomenologically relevant finite O(p{sup 6})-counterterm combination Q{sub V} by means of inverse moment finite energy sum rules. This determination is less sensitive to isospin-breaking effects than previous attempts. (c) 2000 The American Physical Society.},
doi = {10.1103/PhysRevD.61.114025},
journal = {Physical Review. D, Particles Fields},
issn = {0556-2821},
number = 11,
volume = 61,
place = {United States},
year = {2000},
month = {6}
}