Space-time variation of the s and c quark masses

Abstract

Space-time variation of fundamental physical constants in expanding Universe is predicted by a number of popular models. The masses of second generation quarks are larger than first generation quark masses by several orders of magnitude, therefore space-time variation in quark masses may significantly vary between each generation. We evaluate limits on variation in the s and c quark masses from Big Bang nucleosynthesis, Oklo natural nuclear reactor, Yb+, Cs and Rb clock data. The construction of 229Th nuclear clock is expected to enhance these limits by several orders of magnitude. Furthermore, constraints are obtained on an oscillating scalar or pseudoscalar cold dark matter field, as interactions of the field with quarks produce variations in quark masses.

References in corpus (10)

• Searching for dilaton dark matter with atomic clocks
• Search for ultralight scalar dark matter with atomic spectroscopy
• Enhanced effect of temporal variation of the fine structure constant in diatomic molecules
• Coupled Variations of Fundamental Couplings and Primordial Nucleosynthesis
• Galaxy UV-luminosity function and reionization constraints on axion dark matter
• Measurement of the ${}^{229}$Th isomer energy with a magnetic micro-calorimeter
• Dependence of nuclear binding on hadronic mass variation
• Enhanced effect of quark mass variation in 229Th and limits from Oklo data
• On Th229 and time-dependent fundamental constants
• Measuring the stability of fundamental constants with a network of clocks

Cited by in corpus (3)

• Constraints on the Variation of Physical Constants, Equivalence Principle Violation, and a Fifth Force from Atomic Experiments
• Variation of the quadrupole hyperfine structure and nuclear radius due to an interaction with scalar and axion dark matter
• Constraints on the Variation of the QCD Interaction Scale ${\Lambda }_{\text{QCD}}$