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

Here, 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:
 [1] ;  [2]
  1. Perimeter Institute for Theoretical Physics, Waterloo, ON (Canada); TRIUMF, Vancouver, BC (Canada); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); The Univ. of Chicago, Chicago, IL (United States)
  2. Wayne State Univ., Detroit, MI (United States)
Publication Date:
Report Number(s):
FERMILAB-PUB-16-465-T; WSU-HEP-1607; arXiv:1611.09917
Journal ID: ISSN 2470-0010; PRVDAQ; 1501008
Grant/Contract Number:
AC02-07CH11359; FG02-13ER41958; SC0009924
Type:
Accepted Manuscript
Journal Name:
Physical Review D
Additional Journal Information:
Journal Volume: 95; Journal Issue: 9; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
Research Org:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
OSTI Identifier:
1345627
Alternate Identifier(s):
OSTI ID: 1358646

Hill, Richard J., and Paz, Gil. Nucleon spin-averaged forward virtual Compton tensor at large Q2. United States: N. p., 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. 2017. "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 = {Here, 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 = {2017},
month = {5}
}