First Measurement of Compton Scattering on ^3He at HIγS

Abstract

The world's first Compton scattering measurements on a ³He target were performed to probe neutron electromagnetic polarizabilities. Differential cross sections were measured at laboratory angles of 40^∘, 55^∘, 90^∘, 115^∘, 150^∘, using circularly polarized, quasi-monoenergetic photon beams at weighted mean energy values of 61.5 and 97.1 MeV from the High Intensity γ-ray Source at the Triangle Universities Nuclear Laboratory. Comparisons with chiral effective field theory show good agreement at 97.1 MeV but over-prediction at 61.5 MeV, motivating further theoretical development.

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BibTeX

@misc{zhou2026first,
  title = {{First Measurement of Compton Scattering on $^3\textHe$ at HI$γ$S}},
  author = {J. Zhou and E. Mancil and M. W. Ahmed and B. Crowe and G. Feldman and F. Q. L. Friesen and H. Gao and D. Godagama and H. W. Grießhammer and D. Hornidge and C. R. Howell and S. Jia and S. Estupinan Jimenez and H. J. Karwowski and M. A. Kovash and K. K. H. Leung and M. Lewis and Y. Liu and D. Markoff and C. Martin and J. McPherson and R. Mendez and S. F. Mikhailov and D. R. Phillips and M. H. Sikora and N. Walton and J. Wang and Y. K. Wu and B. Yu and Z. W. Zhao},
  howpublished = {arXiv},
  year = {2026},
  month = oct,
  doi = {10.48550/arxiv.2610.07579},
  eprint = {2610.07579},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2610.07579},
}

RIS

TY  - UNPB
TI  - First Measurement of Compton Scattering on ^3He at HIγS
AU  - J. Zhou
AU  - E. Mancil
AU  - M. W. Ahmed
AU  - B. Crowe
AU  - G. Feldman
AU  - F. Q. L. Friesen
AU  - H. Gao
AU  - D. Godagama
AU  - H. W. Grießhammer
AU  - D. Hornidge
AU  - C. R. Howell
AU  - S. Jia
AU  - S. Estupinan Jimenez
AU  - H. J. Karwowski
AU  - M. A. Kovash
AU  - K. K. H. Leung
AU  - M. Lewis
AU  - Y. Liu
AU  - D. Markoff
AU  - C. Martin
AU  - J. McPherson
AU  - R. Mendez
AU  - S. F. Mikhailov
AU  - D. R. Phillips
AU  - M. H. Sikora
AU  - N. Walton
AU  - J. Wang
AU  - Y. K. Wu
AU  - B. Yu
AU  - Z. W. Zhao
PY  - 2026
DA  - 2026/10/06
PB  - arXiv
DO  - 10.48550/arxiv.2610.07579
UR  - https://arxiv.org/abs/2610.07579
AB  - The world's first Compton scattering measurements on a ^3He target were performed to probe neutron electromagnetic polarizabilities. Differential cross sections were measured at laboratory angles of 40^∘, 55^∘, 90^∘, 115^∘, 150^∘, using circularly polarized, quasi-monoenergetic photon beams at weighted mean energy values of 61.5 and 97.1 MeV from the High Intensity γ-ray Source at the Triangle Universities Nuclear Laboratory. Comparisons with chiral effective field theory show good agreement at 97.1 MeV but over-prediction at 61.5 MeV, motivating further theoretical development.
ER  -

First Measurement of Compton Scattering on ³He at HIγS

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