https://doi.org/10.1140/epjp/s13360-025-06401-1
Regular Article
Higgs decay to 
in the minimal supersymmetric standard model and its nonholomorphic extension
Department of Physics, Comsats University Islamabad, 44000, Islamabad, Pakistan
Received:
21
December
2024
Accepted:
5
May
2025
Published online:
16
May
2025
Recent measurements of 
from CMS and ATLAS indicate an excess over standard model (SM) predictions, suggesting the presence of new physics. In this work, we investigate the decay within the minimal supersymmetric standard model (MSSM) and its nonholomorphic extension, the NHSSM. Calculations are performed using the FeynArts/FormCalc setup, utilizing the pre-existing model file for MSSM and generating the NHSSM model file with the support of SARAH. For the parameter space examined in this study, MSSM contributions to can significantly surpass SM predictions reaching to the value 
, thereby bringing 
closer to the experimental value. The SM-predicted value deviates from the experimental value by 
. However, the MSSM contributions can reduce this deviation to less than 
. In contrast, NHSSM contributions remain negligible and do not produce sizable corrections to the decay width.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2025
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
