-p00n near threshold and chiral symmetry breaking

J. Lowe, B. Bassalleck, H. Burkhardt, W. J. Fickinger, J. R. Hall, M. D. Hasinoff, D. Horvath, G. Koch, K. D. Larson, J. P. Miller, A. J. Noble, B. L. Roberts, D. K. Robinson, M. Sakitt, M. E. Sevior, N. W. Tanner, C. E. Waltham, T. M. Warner, D. M. Wolfe

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Total cross sections, angular, and mass distributions for the reaction -p00n have been measured for p-(lab)=7140 MeV/c above threshold. The threshold amplitude was used to determine a value for the chiral-symmetry-breaking parameter, of -0.980.52. The scattering lengths aI for isospin I=0 and 2 are derived from this result, together with a current-algebra sum rule. The results are a0=(0.2070.028)m-1 and a2=(-0.0220.011)m-1. These values are consistent with chiral symmetry broken by the Weinberg interaction and the effects of the f0(975) scalar meson.

Original languageEnglish
Pages (from-to)956-965
Number of pages10
JournalPhysical Review C
Issue number3
Publication statusPublished - Jan 1 1991


ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Lowe, J., Bassalleck, B., Burkhardt, H., Fickinger, W. J., Hall, J. R., Hasinoff, M. D., Horvath, D., Koch, G., Larson, K. D., Miller, J. P., Noble, A. J., Roberts, B. L., Robinson, D. K., Sakitt, M., Sevior, M. E., Tanner, N. W., Waltham, C. E., Warner, T. M., & Wolfe, D. M. (1991). -p00n near threshold and chiral symmetry breaking. Physical Review C, 44(3), 956-965. https://doi.org/10.1103/PhysRevC.44.956