Nucleon spin-averaged forward virtual Compton tensor at large
Abstract
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:
-
- 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)
- Wayne State Univ., Detroit, MI (United States)
- Publication Date:
- Research Org.:
- Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- OSTI Identifier:
- 1345627
- Alternate Identifier(s):
- OSTI ID: 1358646
- 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
- Resource 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)
- 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. https://doi.org/10.1103/PhysRevD.95.094017
Hill, Richard J., and Paz, Gil. Thu .
"Nucleon spin-averaged forward virtual Compton tensor at large Q2". United States. https://doi.org/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 = {Thu May 25 00:00:00 EDT 2017},
month = {Thu May 25 00:00:00 EDT 2017}
}
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