Further search for a neutral boson with a mass around 9 MeV/c(2)

  title={Further search for a neutral boson with a mass around 9 MeV/c(2)},
  author={F. de Boer and Klaus Bethge and H. Bokemeyer and R. van Dantzig and Johan van Klinken and V. I. Mironov and Klaus A. Mueller and K. E. Stiebing},
  • F. de Boer, Klaus Bethge, +5 authors K. E. Stiebing
  • Published 2001
  • Physics
  • Two dedicated experiments on internal pair conversion (IPC) of isoscalar M1 transitions were carried out in order to test a 9 MeV/c2 X-boson scenario. In the 7Li(p,e+e-)8Be reaction at 1.1 MeV proton energy to the predominantly T = 0 level at 18.15 MeV, a significant deviation from IPC was observed at large pair correlation angles. In the 11B(d,ne+e-)12C reaction at 1.6 MeV, leading to the 12.71 MeV 1+ level with pure T = 0 character, an anomaly was observed at ~9 MeV/c2. The compatibility of… CONTINUE READING

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