Observation of parity-violating neutron spin rotation in the n-139La p-wave resonance

K. Sakai, Y. Masuda, T. Adachi, K. Asahi, M. Doi, M. Harada, S. Ishimoto, M. Iinuma, J. Kura, A. Masaike, Y. Matsuda, K. Morimoto, S. Muto, K. Okumura, H. Sato, H. M. Shimizu, A. Yoshimi, Z. J. Zheng

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8 Citations (Scopus)


Parity-violating spin rotation of neutrons in a 139La target was observed in the vicinity of the 0.734 eV p-wave resonance. The measured angle of rotation, φpnc(E), shows a large enhancement around the resonance. The data are fitted with a theoretical function from the s-p mixing models of the parity-violation enhancement, yielding a parity mixing matrix element xW = 1.04 ± 0.40 meV which is in agreement with those previously obtained from the longitudinal asymmetry in the p-wave resonance cross section.

Original languageEnglish
Pages (from-to)11-14
Number of pages4
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Issue number1-2
Publication statusPublished - Jan 9 1997
Externally publishedYes


  • Meissner sheet
  • Neutron spin analyzer
  • Neutron spin rotation
  • Parity mixing matrix element
  • Parity violation enhancement
  • Polarized neutron

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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