• S C Vaidya

      Articles written in Pramana – Journal of Physics

    • An experimental limit on the coupling of a light neutral pseudoscalar particle to hadrons

      D Indumathi C V K Baba A Roy S C Vaidya

      More Details Abstract Fulltext PDF

      Detailed results of an experiment, looking for a short-lived neutral particle decaying by ane+e pair in the decay of the 3.68 MeV (3/2) state in13C, whose decay is predominantly M1, are presented. An upper limit of 7 × 10−5 has been placed on the branching ratio for decay through such a particle with a mass in the range 1.7 to 1.9 MeV/c2. This leads to an upper limit of 10−6 for the coupling of such a particle to nucleons. Such a limit rules out the explanation of thee+ ande peaks recently observed in heavy ion collisions, as due to the decay of a neutral particle.

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