Measurement of the generalized forward spin polarizabilities of the neutron

M. Amarian, L. Auerbach, T. Averett, J. Berthot, P. Bertin, W. Bertozzi, T. Black, E. Brash, D. Brown, E. Burtin, J. Calarco, G. Cates, Z. Chai, J. P. Chen, S. Choi, E. Chudakov, E. Cisbani, C. W. de Jager, A. Deur, R. DiSalvoS. Dieterich, P. Djawotho, J. M. Finn, K. Fissum, H. Fonvieille, S. Frullani, H. Gao, J. Gao, F. Garibaldi, A. Gasparian, S. Gilad, R. Gilman, A. Glamazdin, C. Glashausser, E. Goldberg, J. Gomez, V. Gorbenko, J. O. Hansen, B. Hersman, R. Holmes, G. M. Huber, E. Hughes, B. Humensky, S. Incerti, M. Iodice, S. Jensen, X. Jiang, C. Jones, G. Jones, M. Jones, C. Jutier, A. Ketikyan, I. Kominis, W. Korsch, K. Kramer, K. Kumar, G. Kumbartzki, M. Kuss, E. Lakuriqi, G. Laveissiere, J. Lerose, M. Liang, N. Liyanage, G. Lolos, S. Malov, J. Marroncle, K. McCormick, R. Mckeown, Z. E. Meziani, R. Michaels, J. Mitchell, Z. Papandreou, T. Pavlin, G. G. Petratos, D. Pripstein, D. Prout, R. Ransome, Y. Roblin, D. Rowntree, M. Rvachev, F. Sabatie, A. Saha, K. Slifer, P. Souder, T. Saito, S. Strauch, R. Suleiman, K. Takahashi, S. Teijiro, L. Todor, H. Tsubota, H. Ueno, G. Urciuoli, R. van der Meer, P. Vernin, H. Voskanian, B. Wojtsekhowski, F. Xiong, W. Xu, J. C. Yang, B. Zhang, P. A. Zolnierczuk

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65 Scopus citations


The generalized forward spin polarizabilities of the neutron were measured. The forward spin polarizabilities γ0 and δLT of the neutron were found to be extracted for the first time in a Q2 range from 0.1 to 0.9 GeV2. As γ0 was sensitive to nucleon resonance and δLT was insensitive to the δ resonance resonance, it was the expected that the pair of forward spin polarizabilites should provide benchmark test. The results show significant disagreement with the next-to-leading-order relativistic baryon chiral perturbation theory calculation.

Original languageEnglish
Article number152301
Pages (from-to)152301-1-152301-4
JournalPhysical Review Letters
Issue number15
StatePublished - Oct 8 2004

Bibliographical note

Funding Information:
We would like to acknowledge the outstanding support of the Jefferson Lab staff. We thank V. Bernard, D. Drechsel, T. Hemmert, B. Holstein, C. W. Kao, Ulf-G. Meissner, L. Tiator, M. Vanderhaeghen, and their collaborators for theoretical support and helpful discussions. This work was supported by the U.S. Department of Energy (DOE), the U.S. National Science Foundation, the European INTAS Foundation, the Italian INFN, and the French CEA, CNRS, and Conseil Régional d’Auvergne. The Southeastern Universities Research Association operates the Thomas Jefferson National Accelerator Facility for the DOE under Contract No. DE-AC05-84ER40150.

ASJC Scopus subject areas

  • General Physics and Astronomy


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