A phenomenological determination of the pion-nucleon scattering lengths from pionic hydrogen

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dc.creatorEricson, T. E. O.
dc.creatorLoiseau, B.
dc.creatorWycech, S.
dc.date2004-11-17
dc.date.accessioned2026-07-07T12:39:33Z
dc.date.available2026-07-07T12:39:33Z
dc.descriptionA model independent expression for the electromagnetic corrections to a phenomenological hadronic pion-nucleon scattering length, extracted from pionic hydrogen, is obtained. In a non-relativistic approach and using an extended charge distribution, these corrections are derived up to terms of order (alpha)**2 log(alpha) in the limit of a short-range hadronic interaction. We infer a charged pion-proton scattering length of 0.0870(5) in units of inverse pion mass, which gives for the charged pion-proton-neutron coupling, through the GMO relation, a value of 14.04(17).
dc.descriptionInvited talk at the 10th International Symposium on Meson-Nucleon Physics and the Structure of the Nucleon (MENU 2004), Beijing, China, August 29 - September 4, 2004
dc.identifierhttps://arxiv.org/abs/hep-ph/0411230
dc.identifierhttp://arxiv.org/abs/hep-ph/0411230
dc.identifierInt.J.Mod.Phys.A20:1650-1655,2005
dc.identifierdoi:10.1142/S0217751X05023128
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/219148
dc.subjectHigh Energy Physics - Phenomenology
dc.titleA phenomenological determination of the pion-nucleon scattering lengths from pionic hydrogen
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