Physics beyond the Standard Model from hydrogen spectroscopy
- Ubachs, W.
- Koelemeij, J.C.J.
- Eikema, K.S.E.
- Salumbides, E.J.
DOIAbstract
AbstractSpectroscopy of hydrogen can be used for a search into physics beyond the Standard Model. Differences between the absorption spectra of the Lyman and Werner bands of H2 as observed at high redshift and those measured in the laboratory can be interpreted in terms of possible variations of the proton–electron mass ratio μ=mp/me over cosmological history. Investigation of ten such absorbers in the redshift range z=2.0–4.2 yields a constraint of |Δμ/μ|<5×10-6 at 3σ. Observation of H2 from the photospheres of white dwarf stars inside our Galaxy delivers a constraint of similar magnitude on a dependence of μ on a gravitational potential 104 times as strong as on the Earth’s surface. While such astronomical studies aim at finding quintesse...
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