Molecular effects in low-energy muon transfer from muonic hydrogen to oxygen
Atomic Physics
2026-03-26 v1
Abstract
In the present study we determine from the available experimental data the cross section of muon transfer to molecular oxygen at low energies with account of the oxygen molecule structure. Building on an earlier work, the results highlight the role of the molecular structure effects and signifcantly improve the agreement with theoretical calculations of the muon transfer rate. An effcient computational model of the kinetics of processes involving muonic hydrogen atoms in gaseous mixture of H2 and O2 is developed and analyzed. The model is applied in the description of the FAMU experiment for the measurement of the hyperfine splitting in muonic hydrogen and the Zemach radius of the proton.
Cite
@article{arxiv.2603.24339,
title = {Molecular effects in low-energy muon transfer from muonic hydrogen to oxygen},
author = {I. Boradjiev and A. Adamczak and D. Bakalov and M. Baruzzo and R. Benocci and M. Bonesini and S. Capra and E. Christova and M. Clemenza and M. Danailov and P. Danev and E. Fasci and L. Gianfrani and A. D. Hillier and K. Ishida and A. Menegolli and E. Mocchiutti and S. Monzani and L. Moretti and C. Pizzolotto and R. Rossini and A. Sbrizzi and M. Stoilov and H. S. Tonchev and A. Vacchi and E. Vallazza and K. Yokoyama},
journal= {arXiv preprint arXiv:2603.24339},
year = {2026}
}
Comments
26 pages, 7 figures