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Proton spin structure and generalized polarizabilities in the strong quantum chromodynamics regime

Publication ,  Journal Article
Ruth, D; Zielinski, R; Gu, C; Allada (Cummings), M; Badman, T; Huang, M; Liu, J; Zhu, P; Allada, K; Zhang, J; Camsonne, A; Chen, JP; Aniol, K ...
Published in: Nature Physics
December 1, 2022
Published version (DOI)

The strong interaction is not well understood at low energies or for interactions with low momentum transfer. Chiral perturbation theory gives testable predictions for the nucleonic generalized polarizabilities, which are fundamental quantities describing the nucleon’s response to an external field. We report a measurement of the proton’s generalized spin polarizabilities extracted with a polarized electron beam and a polarized solid ammonia target in the region where chiral perturbation theory is expected to be valid. The investigated structure function g2 characterizes the internal spin structure of the proton. From its moments, we extract the longitudinal–transverse spin polarizability δLT and twist-3 matrix element and polarizability d2¯. Our results provide discriminating power between existing chiral perturbation theory calculations and will help provide a better understanding of this strong quantum chromodynamics regime.

Duke Scholars

Haiyan Gao
Author Haiyan Gao Physics

Published In

Nature Physics

DOI

10.1038/s41567-022-01781-y

EISSN

1745-2481

ISSN

1745-2473

Publication Date

December 1, 2022

Volume

18

Issue

12

Start / End Page

1441 / 1446

Related Subject Headings

  • Fluids & Plasmas
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 02 Physical Sciences
  • 01 Mathematical Sciences
 

Citation

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Ruth, D., Zielinski, R., Gu, C., Allada (Cummings), M., Badman, T., Huang, M., … Zheng, X. (2022). Proton spin structure and generalized polarizabilities in the strong quantum chromodynamics regime. Nature Physics, 18(12), 1441–1446. https://doi.org/10.1038/s41567-022-01781-y
Ruth, D., R. Zielinski, C. Gu, M. Allada (Cummings), T. Badman, M. Huang, J. Liu, et al. “Proton spin structure and generalized polarizabilities in the strong quantum chromodynamics regime.” Nature Physics 18, no. 12 (December 1, 2022): 1441–46. https://doi.org/10.1038/s41567-022-01781-y.
Ruth D, Zielinski R, Gu C, Allada (Cummings) M, Badman T, Huang M, et al. Proton spin structure and generalized polarizabilities in the strong quantum chromodynamics regime. Nature Physics. 2022 Dec 1;18(12):1441–6.
Ruth, D., et al. “Proton spin structure and generalized polarizabilities in the strong quantum chromodynamics regime.” Nature Physics, vol. 18, no. 12, Dec. 2022, pp. 1441–46. Scopus, doi:10.1038/s41567-022-01781-y.
Ruth D, Zielinski R, Gu C, Allada (Cummings) M, Badman T, Huang M, Liu J, Zhu P, Allada K, Zhang J, Camsonne A, Chen JP, Slifer K, Aniol K, Annand J, Arrington J, Averett T, Baghdasaryan H, Bellini V, Boeglin W, Brock J, Carlin C, Chen C, Cisbani E, Crabb D, Daniel A, Day D, Duve R, Fassi LE, Friedman M, Fuchey E, Gao H, Gilman R, Glamazdin S, Gueye P, Hafez M, Han Y, Hansen O, Shabestari MH, Hen O, Higinbotham D, Horn T, Iqbal S, Jensen E, Kang H, Keith CD, Kelleher A, Keller D, Khanal H, Korover I, Kumbartzki G, Li W, Lichtenstadt J, Lindgren R, Long E, Malace S, Markowitz P, Maxwell J, Meekins DM, Meziani ZE, McLean C, Michaels R, Mihovilovič M, Muangma N, Camacho CM, Musson J, Myers K, Oh Y, Carmignotto MP, Perdrisat C, Phillips S, Piasetzky E, Pierce J, Punjabi V, Qiang Y, Reimer PE, Roblin Y, Ron G, Rondon O, Russo G, Saenboonruang K, Sawatzky B, Shahinyan A, Shneor R, Širca S, Sjoegren J, Solvignon-Slifer P, Sparveris N, Sulkosky V, Wesselmann F, Yan W, Yang H, Yao H, Ye Z, Yurov M, Zhang Y, Zhao YX, Zheng X. Proton spin structure and generalized polarizabilities in the strong quantum chromodynamics regime. Nature Physics. 2022 Dec 1;18(12):1441–1446.

Published In

Nature Physics

DOI

10.1038/s41567-022-01781-y

EISSN

1745-2481

ISSN

1745-2473

Publication Date

December 1, 2022

Volume

18

Issue

12

Start / End Page

1441 / 1446

Related Subject Headings

  • Fluids & Plasmas
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 02 Physical Sciences
  • 01 Mathematical Sciences