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Role of near threshold resonances in intermediate energy nuclear physics

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Abstract

The presence of a resonance close to the threshold strongly effects the dynamics of the interacting particles at low energies. Production of 12C, the element for life, in 4He burning in Sun is a classic example of such a situation. In intermediate energy nuclear physics, this situation arises in the interactions of a η-meson with a nucleon and that of a K −-meson with a proton at low energies, where, both these systems have a resonance or a bound state near their thresholds, resulting in a strong attractive interaction. If putting these mesons in nuclear environment produces a strong attraction, it is possible that, in nature there may exist η- and K −-nuclear bound states. Such a tantalizing possibility has led to experimental and theoretical programmes to search for them. These efforts have produced positive results. This paper gives a brief critical overview of these studies, emphasizing especially the efforts led by Bhabha Atomic Research Centre (BARC).

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Authors and Affiliations

  1. UM-DAE Centre for Excellence in Basic Sciences, Mumbai University, Mumbai, 400 098, India

    B K JAIN

  2. Department of Physics and Astronomy, Louisiana State University, Baton Rouge, LA, 70803, USA

    N J UPADHYAY

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  1. B K JAIN
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  2. N J UPADHYAY
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Correspondence to B K JAIN.

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JAIN, B.K., UPADHYAY, N.J. Role of near threshold resonances in intermediate energy nuclear physics. Pramana - J Phys 83, 749–759 (2014). https://doi.org/10.1007/s12043-014-0868-5

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  • DOI: https://doi.org/10.1007/s12043-014-0868-5

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