Torsion-rotational transitions in methanol as a probe of fundamental physical constants — electron and proton masses

Torsion-rotational transitions in methanol as a probe of fundamental physical constants — electron and proton masses
J. S. Vorotyntseva, S. A. Levshakov
arXiv:2405.04542v1 Announce Type: new
Abstract: We report on the using of torsion-rotational transitions in the CH3OH and (13)CH3OH molecules to evaluate possible variations of the physical constant mu=m_e/m_p – the electron-to-proton mass ratio – from spectral observations of emission lines detected in the microwave range towards the dense molecular cloud Orion-KL. An estimate of the upper limit on the relative changes in mu is obtained by two independent ways – with (13)CH3OH lines and with the combination of (13)CH3OH and CH3OH lines. The calculated upper limit Delta mu/mu arXiv:2405.04542v1 Announce Type: new
Abstract: We report on the using of torsion-rotational transitions in the CH3OH and (13)CH3OH molecules to evaluate possible variations of the physical constant mu=m_e/m_p – the electron-to-proton mass ratio – from spectral observations of emission lines detected in the microwave range towards the dense molecular cloud Orion-KL. An estimate of the upper limit on the relative changes in mu is obtained by two independent ways – with (13)CH3OH lines and with the combination of (13)CH3OH and CH3OH lines. The calculated upper limit Delta mu/mu