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Generalized Chou-Yang Model and Hadronic Radii

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Abstract

Generalized Chou-Yang model (GCYM) predicts electromagnetic form factors of several hadrons with varying magnitude of strangeness. By using these form factors, the root mean square (RMS) radii of the hadrons such as (π, p, ϕ, Λ, Σ+, Σ−and Ω−)are computed. It is found that there is consistency among the predicted RMS radii of pion and proton by GCYM (and other models) and experimental results. For all hadrons experimental results are not available. Also we find that results of GCYM and from other models are somewhat inconsistent for hadrons other than pion and proton. Though GCYM and other models do not agree for most of the hadrons but they have one similarity that the computed RMS radii seem decreasing with the increase in the strangeness level, separately for mesons as well as for baryons. The experimental results of hadrons other than pion and proton are needed to check the suitability of GCYM and other models as well as in probing the trend of decreasing radii with increase in strangeness content.

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Acknowledgements

This work is partially based upon PhD thesis work of Ms. Sarwat Zahra, sponsored by Higher Education Commission (HEC), Pakistan.

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Authors and Affiliations

  1. Township Campus, University of Education, Lahore, 54770, Pakistan

    Sarwat Zahra

  2. Centre for High Energy Physics, University of the Punjab, Lahore, 54590, Pakistan

    Haris Rashid, Talab Hussain & Abrar Ahmad Zafar

  3. Chandbagh College Muridke, Muridke, Pakistan

    Fazal-e-Aleem

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  1. Sarwat Zahra
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  2. Haris Rashid
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  3. Fazal-e-Aleem
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  4. Talab Hussain
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  5. Abrar Ahmad Zafar
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Correspondence to Talab Hussain.

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Zahra, S., Rashid, H., Fazal-e-Aleem et al. Generalized Chou-Yang Model and Hadronic Radii. Int J Theor Phys 59, 1547–1552 (2020). https://doi.org/10.1007/s10773-020-04422-3

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