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Title: Nucleon spin-averaged forward virtual Compton tensor at large Q 2

Abstract

The nucleon spin-averaged forward virtual Compton tensor determines important physical quantities such as electromagnetically-induced mass differences of nucleons, and two-photon exchange contributions in hydrogen spectroscopy. It depends on two kinematic variables: $$\nu$$, the virtual photon energy in the proton rest frame, and $Q^2$, the photon's invariant four-momentum squared. Using the operator product expansion, we calculate the tensor's large-$Q^2$ behavior for $$\nu=0$$, including for the first time the full spin-2 contribution and correcting a previous result for the spin-0 contribution. Implications for the proton radius puzzle are discussed.

Authors:
;
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1345627
Report Number(s):
FERMILAB-PUB-16-465-T; WSU-HEP-1607; arXiv:1611.09917
Journal ID: ISSN 2470-0010; PRVDAQ; 1501008
DOE Contract Number:
AC02-07CH11359
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review D; Journal Volume: 95; Journal Issue: 9
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Hill, Richard J., and Paz, Gil. Nucleon spin-averaged forward virtual Compton tensor at large Q2. United States: N. p., 2017. Web. doi:10.1103/PhysRevD.95.094017.
Hill, Richard J., & Paz, Gil. Nucleon spin-averaged forward virtual Compton tensor at large Q2. United States. doi:10.1103/PhysRevD.95.094017.
Hill, Richard J., and Paz, Gil. Mon . "Nucleon spin-averaged forward virtual Compton tensor at large Q2". United States. doi:10.1103/PhysRevD.95.094017. https://www.osti.gov/servlets/purl/1345627.
@article{osti_1345627,
title = {Nucleon spin-averaged forward virtual Compton tensor at large Q2},
author = {Hill, Richard J. and Paz, Gil},
abstractNote = {The nucleon spin-averaged forward virtual Compton tensor determines important physical quantities such as electromagnetically-induced mass differences of nucleons, and two-photon exchange contributions in hydrogen spectroscopy. It depends on two kinematic variables: $\nu$, the virtual photon energy in the proton rest frame, and $Q^2$, the photon's invariant four-momentum squared. Using the operator product expansion, we calculate the tensor's large-$Q^2$ behavior for $\nu=0$, including for the first time the full spin-2 contribution and correcting a previous result for the spin-0 contribution. Implications for the proton radius puzzle are discussed.},
doi = {10.1103/PhysRevD.95.094017},
journal = {Physical Review D},
number = 9,
volume = 95,
place = {United States},
year = {Mon May 01 00:00:00 EDT 2017},
month = {Mon May 01 00:00:00 EDT 2017}
}