• Open Access

HQET renormalization group improved Lagrangian at O(1/m3) with leading logarithmic accuracy: Spin-dependent case

Xabier Lobregat, Daniel Moreno, and Rudin Petrossian-Byrne
Phys. Rev. D 97, 054018 – Published 19 March 2018
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Abstract
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Article Text
  • INTRODUCTION
  • HQET LAGRANGIAN WITHOUT LIGHT FERMIONS
  • COMPTON SCATTERING
  • ANOMALOUS DIMENSIONS FOR 1/m3…
  • SOLUTION AND NUMERICAL ANALYSIS
  • COMPARISON WITH EARLIER WORK
  • CONCLUSIONS
  • ACKNOWLEDGMENTS
  • APPENDICES
    • References

    Abstract

    We obtain the renormalization group improved expressions of the Wilson coefficients associated to the O(1/m3) spin-dependent heavy quark effective theory Lagrangian operators, with leading logarithmic approximation, in the case of zero light quarks. We have employed the Coulomb gauge.

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    • Received 25 February 2018

    DOI:https://doi.org/10.1103/PhysRevD.97.054018

    Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.

    Published by the American Physical Society

    Physics Subject Headings (PhySH)

    1. Research Areas
    Effective field theoryPerturbation theoryQuark modelResummation methods
    Particles & Fields

    Authors & Affiliations

    Xabier Lobregat1,*, Daniel Moreno1,†, and Rudin Petrossian-Byrne2,‡

    • 1Grup de Física Teòrica, Dept. Física and IFAE-BIST, Universitat Autònoma de Barcelona, E-08193 Bellaterra (Barcelona), Spain
    • 2Rudolf Peierls Centre for Theoretical Physics, University of Oxford, 1 Keble Road, Oxford OX1 3NP, United Kingdom

    • *lobregat@ifae.es
    • †dmoreno@ifae.es
    • ‡rudin.petrossian-byrne@physics.ox.ac.uk

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    Issue

    Vol. 97, Iss. 5 — 1 March 2018

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