31 October 2025 to 1 November 2025
North Lakhimpur University
Asia/Kolkata timezone
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Convergence properties of Mellin moments under sine-cosine PDF parametrizations

1 Nov 2025, 15:33
13m
Ranghar Auditorium

Ranghar Auditorium

NLU
Oral Track 01: High Energy Physics, Gravitation and Cosmology Oral Presentations

Speaker

Gyati Gyuth (NERIST)

Description

Abstract: We investigate the numerical convergence of Mellin moments of parton distribution functions (PDFs) when the conventional constant prefactor is replaced by sine-cosine expansions. Moments are computed for gluons and quarks using two theoretical parameter sets and compared with results from the standard parametrization. Our analysis demonstrates that trigonometric structures not only preserve the expected decrease of moments with increasing index but also improve numerical stability in small-x dominated integrals.

Keywords: Mellin moments, Parton Distribution functions, Trigonometric Parametrization, Quantum Chromodynamics, Small-x

Author

Gyati Gyuth (NERIST)

Co-authors

Dr Akbari Jahan (NERIST) Ms Hiinyo Antun (NERIST)

Presentation materials