Constraining Variations in the Fine-structure Constant, Quark Masses and the Strong Interaction

M. T. Murphy, V. V. Flambaum, J. K. Webb +3

We present evidence for variations in the fine-structure constant from Keck/HIRES spectra of 143 quasar absorption systems over the redshift range 0.2 < z_abs < 4.2. This includes…