The three loop slope of the Dirac form factor and the 1S Lamb shift in hydrogen

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dc.creatorMelnikov, Kirill
dc.creatorvan Ritbergen, Timo
dc.date1999-11-09
dc.date1999-11-10
dc.date.accessioned2026-07-07T10:33:59Z
dc.date.available2026-07-07T10:33:59Z
dc.descriptionThe last unknown contribution to hydrogen energy levels at order m alpha ^7, due to the slope of the Dirac form factor at three loops, is evaluated in a closed analytical form. The resulting shift of the hydrogen nS energy level is found to be 3.016/n^3 kHz. Using the QED calculations of the 1S Lamb shift, we extract a precise value of the proton charge radius r_p=0.883 \pm 0.014 fm.
dc.description4 pages, 1 figure, revtex
dc.identifierhttps://arxiv.org/abs/hep-ph/9911277
dc.identifierhttp://arxiv.org/abs/hep-ph/9911277
dc.identifierPhys.Rev.Lett.84:1673-1676,2000
dc.identifierdoi:10.1103/PhysRevLett.84.1673
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/179319
dc.subjectHigh Energy Physics - Phenomenology
dc.titleThe three loop slope of the Dirac form factor and the 1S Lamb shift in hydrogen
dc.typetext

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