Limits on variations of the quark masses, QCD scale, and fine structure constant

2004/02/10 by V. V. Flambaum, Derek B. Leinweber, D. B. Leinweber +2 · 3 citations
Physics and Astronomy · #Advanced Frequency and Time Standards #Atomic and Subatomic Physics Research #Cold Atom Physics and Bose-Einstein Condensates #astro-ph #hep-ph #physics.atom-ph

paper · pdf · doi:10.1103/physrevd.69.115006

published as Phys.Rev.D69:115006,2004 · 8 pages, 1 figure, uses revtex4

arxiv created 2004/02/10 · openalex publication_date 2004/06/02 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We perform calculations of the dependence of nuclear magnetic moments on quark masses and obtain limits on the variation of the fine structure constant \ensuremathα and (m_q/\ensuremathΛ_QCD) from recent measurements of hydrogen hyperfine (21 cm) and molecular rotational transitions in quasar absorption systems, atomic clock experiments with hyperfine transitions in H, Rb, Cs, Yb⁺, Hg⁺, and optical transition in Hg⁺. Experiments with Cd⁺, deuterium/hydrogen, molecular SF₆, and Zeeman transitions in ³He/Xe are also discussed.

Citations

• Search for Time Variation of the Fine Structure Constant
• Constraints on the variations of the fundamental couplings

Cited by

• Probing variations in fundamental constants with radio and optical quasar absorption-line observations
• Limits on Variations in Fundamental Constants from 21-cm and Ultraviolet Quasar Absorption Lines
• Corrections to the fine structure constant in D-dimensional space from the generalized uncertainty principle
• Search for new physics with atoms and molecules