Light scalar meson and decay constant in SU(3) gauge theory with eight dynamical flavors-Reference-Cited by-同舟云学术

Light scalar meson and decay constant in SU(3) gauge theory with eight dynamical flavors

Published:2024-09-04 Issue:5 Volume:110 Page:
ISSN:2470-0010
Container-title:Physical Review D
language:en
Short-container-title:Phys. Rev. D

Author:

Brower R. C.¹,Owen E.¹^ORCID,Rebbi C.¹^ORCID,Culver C.²^ORCID,Schaich D.²^ORCID,Cushman K. K.³^ORCID,Fleming G. T.³^ORCID,Gasbarro A.⁴,Hasenfratz A.⁵^ORCID,Neil E. T.⁵^ORCID,Ingoldby J.⁶^ORCID,Jin X. Y.⁷^ORCID,Osborn J. C.⁷^ORCID,Rinaldi E.⁸^ORCID,Vranas P.⁹^ORCID,Weinberg E.¹¹⁰,Witzel O.¹¹^ORCID,

Affiliation:

1. Boston University

2. University of Liverpool

3. Yale University

4. University of Bern

5. University of Colorado

6. Abdus Salam International Centre for Theoretical Physics

7. Argonne National Laboratory

8. Interdisciplinary Theoretical and Mathematical Sciences Program (iTHEMS)

9. Lawrence Berkeley National Laboratory

10. NVIDIA Corporation

11. Universität Siegen

Abstract

The SU(3) gauge theory with Nf=8 nearly massless Dirac fermions has long been of theoretical and phenomenological interest due to the near-conformality arising from its proximity to the conformal window. One particularly interesting feature is the emergence of a relatively light, stable flavor-singlet scalar meson σ(JPC=0++) in contrast to the Nf=2 theory QCD. In this work, we study the finite-volume dependence of the σ meson correlation function computed in lattice gauge theory and determine the σ meson mass and decay constant extrapolated to the infinite-volume limit. We also determine the infinite-volume mass and decay constant of the flavor-nonsinglet scalar meson a0.

Published by the American Physical Society

2024

Funder

U.S. Department of Energy

Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung

H2020 European Research Council

Science and Technology Facilities Council

Lawrence Livermore National Laboratory

Office of Science

Boston University

Massachusetts Green High Performance Computing Center

National Science Foundation