Color transparency and the proton form factor: Evidence for the Feynman mechanism

Caplow-Munro, Olivia; Miller, Gerald A.

doi:10.1103/physrevc.104.l012201

Title: Color transparency and the proton form factor: Evidence for the Feynman mechanism

Journal Article · 13 July 2021 · Physical Review. C

DOI: https://doi.org/10.1103/physrevc.104.l012201 · OSTI ID:1807680

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Univ. of Washington, Seattle, WA (United States); University of Washington, Dept of Physics, Nuclear Theory Group
Univ. of Washington, Seattle, WA (United States)

A recent experiment by D. Bhetuwal et al. [Phys. Rev. Lett. 126, 082301 (2021)] used the (e,e'p) reaction on ¹²C to search for the effects of color transparency (the absence of final-state interactions). Color transparency was said to be ruled out. Observing the effects of color transparency depends on the ability of a putative point-like-configuration (PLC), formed in a high-momentum transfer coherent reaction, to escape the nucleus without expanding its size. Here, we study the expansion aspect of color transparency using superconformal baryon-meson symmetry and light-front holographic QCD. A new formalism is obtained and used to analyze the recent experiment. The resulting conclusion is that effects of expansion would not be sufficiently significant in causing final-state interactions to occur. Therefore, we conclude that a PLC was not formed. In conclusion, this means that the Feynman mechanism involving virtual photon absorption on a single high-momentum quark is responsible for the high-momentum electromagnetic form factor of the proton.

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Research Organization:: Univ. of Washington, Seattle, WA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Nuclear Physics (NP)

Grant/Contract Number:: FG02-97ER41014

OSTI ID:: 1807680

Journal Information:: Physical Review. C, Journal Name: Physical Review. C Journal Issue: 1 Vol. 104; ISSN 2469-9985

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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