Nucleon spin-averaged forward virtual Compton tensor at large Q2

Hill, Richard J.; Paz, Gil

doi:10.1103/PhysRevD.95.094017

Title: Nucleon spin-averaged forward virtual Compton tensor at large $Q^{2}$

Journal Article · Thu May 25 00:00:00 EDT 2017 · Physical Review D

DOI:https://doi.org/10.1103/PhysRevD.95.094017· OSTI ID:1345627

Hill, Richard J. ^[1]; Paz, Gil ^[2]

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)

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.

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Research Organization:: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP)

Grant/Contract Number:: AC02-07CH11359; FG02-13ER41958; SC0009924

OSTI ID:: 1345627

Alternate ID(s):: OSTI ID: 1358646

Report Number(s):: FERMILAB-PUB-16-465-T; WSU-HEP-1607; arXiv:1611.09917; PRVDAQ; 1501008

Journal Information:: Physical Review D, Vol. 95, Issue 9; ISSN 2470-0010

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 21 works

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Cited By (5)

Ab initio calculation of nuclear-structure corrections in muonic atoms Ji, C.; Bacca, S.; Barnea, N. Journal of Physics G: Nuclear and Particle Physics, Vol. 45, Issue 9 https://doi.org/10.1088/1361-6471/aad3eb	journal	August 2018
Two-photon exchange correction to the Lamb shift and hyperfine splitting of S levels Tomalak, Oleksandr The European Physical Journal A, Vol. 55, Issue 5 https://doi.org/10.1140/epja/i2019-12743-1	journal	May 2019
Two-photon exchange correction to the hyperfine splitting in muonic hydrogen Tomalak, Oleksandr The European Physical Journal C, Vol. 77, Issue 12 https://doi.org/10.1140/epjc/s10052-017-5435-z	journal	December 2017
Muonic Lithium atoms: nuclear structure corrections to the Lamb shift Li Muli, Simone Salvatore; Poggialini, Anna; Bacca, Sonia SciPost Physics Proceedings, Issue 3 https://doi.org/10.21468/scipostphysproc.3.028	journal	January 2020
Two-photon exchange correction to the hyperfine splitting in muonic hydrogen Tomalak, O. arXiv https://doi.org/10.48550/arxiv.1708.02509	text	January 2017

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