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Parametrizing the line shapes of near-threshold resonances

  • The International Session-Conference of SNP PSD RAS “Physics of Fundamental Interactions”
  • Session 3—Physics of Flavors, Hadrons, Exotics
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Abstract

A parametrization is proposed for the line shapes of near-threshold resonances, which is based on the model of coupled channels and can include an arbitrary number of elastic and inelastic channels and bare poles. The proposed parametrization satisfies the requirements imposed by unitarity and analyticity, and is convenient for the data analysis embracing all available experimental information. The model parameters are physically meaningful, and their values can be found using different theoretical schemes.

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Authors and Affiliations

  1. National Research Nuclear University MEPhI, Moscow, 115409, Russia

    Yu. S. Kalashnikova, R. V. Mizuk & A. V. Nefediev

Authors
  1. Yu. S. Kalashnikova
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  2. R. V. Mizuk
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  3. A. V. Nefediev
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Corresponding author

Correspondence to A. V. Nefediev.

Additional information

Original Russian Text © Yu.S. Kalashnikova, R.V. Mizuk, A.V. Nefediev, 2017, published in Fizika Elementarnykh Chastits i Atomnogo Yadra, 2017, Vol. 48, No. 6.

Talk at the International Session–Conference on the Physics of Fundamental Interactions (JINR Section, Physics Department, Russian Academy of Sciences), Dubna, April 12–15, 2016.

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Kalashnikova, Y.S., Mizuk, R.V. & Nefediev, A.V. Parametrizing the line shapes of near-threshold resonances. Phys. Part. Nuclei 48, 849–850 (2017). https://doi.org/10.1134/S1063779617060235

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  • DOI: https://doi.org/10.1134/S1063779617060235

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