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Title: Electromagnetic proton–neutron mass difference

Abstract

In this paper, we discuss the Cottingham formula and evaluate the proton–neutron electromagnetic mass difference exploiting the state-of-the-art phenomenological input.We decompose individual contributions to the mass splitting into Born, inelastic and subtraction terms. We evaluate the subtraction-function contribution connecting the input based on experimental data with the operator product expansion matched to QCD which allows us to avoid model dependence and to reduce errors of this contribution. We evaluate inelastic and Born terms accounting for modern low-$Q^2$ data.

Authors:
ORCiD logo [1]
  1. Johannes Gutenberg Univ., Mainz (Germany); Univ. of Kentucky, Lexington, KY (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP); German Research Foundation (DFG); National Institute of Standards and Technology (NIST); Universities Research Association
OSTI Identifier:
1546035
Report Number(s):
arXiv:1810.02502; FERMILAB-PUB-19-216-V
Journal ID: ISSN 2190-5444; oai:inspirehep.net:1697118
Grant/Contract Number:  
AC02-07CH11359; SC0019095
Resource Type:
Accepted Manuscript
Journal Name:
European Physical Journal Plus
Additional Journal Information:
Journal Volume: 135; Journal Issue: 6; Journal ID: ISSN 2190-5444
Publisher:
Springer
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Tomalak, Oleksandr. Electromagnetic proton–neutron mass difference. United States: N. p., 2020. Web. https://doi.org/10.1140/epjp/s13360-020-00413-9.
Tomalak, Oleksandr. Electromagnetic proton–neutron mass difference. United States. https://doi.org/10.1140/epjp/s13360-020-00413-9
Tomalak, Oleksandr. Tue . "Electromagnetic proton–neutron mass difference". United States. https://doi.org/10.1140/epjp/s13360-020-00413-9. https://www.osti.gov/servlets/purl/1546035.
@article{osti_1546035,
title = {Electromagnetic proton–neutron mass difference},
author = {Tomalak, Oleksandr},
abstractNote = {In this paper, we discuss the Cottingham formula and evaluate the proton–neutron electromagnetic mass difference exploiting the state-of-the-art phenomenological input.We decompose individual contributions to the mass splitting into Born, inelastic and subtraction terms. We evaluate the subtraction-function contribution connecting the input based on experimental data with the operator product expansion matched to QCD which allows us to avoid model dependence and to reduce errors of this contribution. We evaluate inelastic and Born terms accounting for modern low-$Q^2$ data.},
doi = {10.1140/epjp/s13360-020-00413-9},
journal = {European Physical Journal Plus},
number = 6,
volume = 135,
place = {United States},
year = {2020},
month = {5}
}

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