Authors:	Mihovilovič, Miha Achenbach, Patrick Beranek, Tobias Beričič, Jure Bernauer, Jan C. Böhm, Ralph Bosnar, Damir Cardinali, Matteo Correa, Loup Debenjak, Luka Denig, Achim Distler, Michael O. Esser, Anselm Ferretti Bondy, Maria Isabel Fonvieille, Helene Friedrich, Jan M. Friščić, Ivica Hoek, Matthias Kegel, Simon Merkel, Harald Middleton, Duncan George Müller, Ulrich Pochodzalla, Josef Schlimme, Björn S. Schoth, Matthias Schulz, Florian Sfienti, Concettina Širca, Simon Štajner, Samo Stöttinger, Y. Thiel, M. Tyukin, Alexey Vanderhaeghen, Mark Weber, Adrian B.
Title:	The proton charge radius extracted from the initial-state radiation experiment at MAMI
Online publication date:	27-Jun-2022
Year of first publication:	2021
Language:	english
Abstract:	We report on a comprehensive reinterpretation of the existing cross-section data for elastic electron-proton scattering obtained by the initial-state radiation technique, resulting in a significantly improved accuracy of the extracted proton charge radius. By refining the external energy corrections we have achieved an outstanding description of the radiative tail, essential for a detailed investigation of the proton finite-size effects on the measured cross sections. This development, together with a novel framework for determining the radius, based on a regression analysis of the cross sections employing a polynomial model for the form factor, led us to a new value for the charge radius, which is (0.878±0.011stat.±0.031sys.±0.002mod.)fm
DDC:	530 Physik 530 Physics
Institution:	Johannes Gutenberg-Universität Mainz
Department:	FB 08 Physik, Mathematik u. Informatik
Place:	Mainz
ROR:	https://ror.org/023b0x485
DOI:	http://doi.org/10.25358/openscience-7227
Version:	Published version
Publication type:	Zeitschriftenaufsatz
License:	CC BY
Information on rights of use:	https://creativecommons.org/licenses/by/4.0/
Journal:	The European physical journal : A, Hadrons and nuclei 57
Pages or article number:	107
Publisher:	Springer
Publisher place:	Berlin u.a.
Issue date:	2021
ISSN:	1434-601X
Publisher DOI:	10.1140/epja/s10050-021-00414-x
Appears in collections:	JGU-Publikationen