Satyajit Puhan - pion

Extraction of Pion GPDs — Prof. C. R. Ji's Group

2026-04-17T00:00:00+00:00

Talk Title: Extraction of Pion GPDs

Mode: Zoom Meeting | Group: Prof. C. R. Ji's Research Group, NCSU, USA

Abstract</h2>
In this talk, I present our recent work on the data-driven extraction of the unpolarized quark Generalized Parton Distributions (GPDs) of the pion at zero skewness. Using a global fit to experimental pion electromagnetic form factor and PDF data, we determine the pion GPDs through a flexible parameterization embedded in a GPD framework with collinear PDFs and a profile function encoding transverse dynamics. Impact-parameter-space interpretations of the spatial parton distributions are discussed, revealing the internal structure of the lightest QCD bound state. The results provide essential input for future experiments at EIC, JLab 12 GeV, COMPASS, and AMBER.

Pion GFFs at JINR-BLTP — Dubna, Moscow

2025-08-15T00:00:00+00:00

Talk Title: Gravitational form factor of pion
Mode: In person at Interplay of gravity and strong interactions at BLTP, JINR, Dubna, Moscow
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About This Talk</h2>
I presented my recent work on extracting the gravitational form factors (GFFs) of the pion and discussed approaches for their experimental extraction. This talk was part of the "Interplay of gravity and strong interactions" program at the Bogoliubov Laboratory of Theoretical Physics (BLTP), Joint Institute for Nuclear Research (JINR), Dubna, Moscow.

Internal structure of pion, kaon, and ρ meson — JINR Seminar

2025-03-28T00:00:00+00:00

Talk Title: Internal structure of pion, kaon, and ρ meson in light front dynamics
Mode: Zoom Meeting | Place: JINR, Dubna, Moscow
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Abstract</h2>
The talk focuses on studying the internal structure of pion, kaon, and ρ mesons within light-front models. We systematically explore transverse momentum-dependent parton distributions (TMDs), generalised parton distributions (GPDs), form factors (FFs), and parton distribution functions (PDFs) for these particles.
Additionally, the mechanical properties of the pion and kaon are investigated by calculating pressure and shear distributions through GPDs. The charge radii of these particles are predicted as well, providing insight into their spatial structure.
To further understand the behaviour of the pion and kaon in nuclear environments, these distributions are studied in medium using the chiral SU(3) quark mean field model. The PDFs are evolved to higher Q² scales to facilitate comparison with experimental data.
The upcoming Electron-Ion Collider and NICA will serve as crucial platforms to test and refine these theoretical predictions.

Pion and Kaon Structure at HHIQCD 2024 — Kyoto University

2024-11-01T00:00:00+00:00

Talk Title: Structural analysis of Pion and Kaon with distribution functions
Mode: In person at HHIQCD, Kyoto University, Japan
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Abstract</h2>
Pion and kaon are one of the simplest meson structures to study the distribution function. In this work, we have calculated the time reversal quark transverse momentum-dependent parton distribution functions (TMDs) in the light-front based holographic model (LFHM) and quark model (LFQM) up to twist-4.
We have presented the three dimensional structure of T-even TMDs for both the particles in both models. The transverse structure have been discussed with the help of two dimensional contour plot distribution in momentum space and average quark momenta in both the models. The T-even TMDs have also been compared for both the models and evolved to higher Q² to compare with available TMDs extraction data for the case of pion.
The collinear parton distribution functions (PDFs) have also been investigated. The unpolarized f₁(x) PDF have been evolved through DGLAP evolution from Q² = 1 GeV² to 16 GeV² and found significant behavior with experimental results. The spatial structure have also been studied through leading twist GPDs and have been implicated to understand the form factors (FFs).

Pion Structure at ICTS-TIFR 2024 — Bengaluru

2024-02-01T00:00:00+00:00

Talk Title: Structural analysis of pion with distribution functions (TMDs, GPDs and GDAs)
Mode: In person at ICTS, Bengaluru, India
Watch the Talk on YouTube →</a>
About This Talk</h2>
I presented my research on identifying the internal structure of the pion using three complementary types of distribution functions: Transverse Momentum Dependent distributions (TMDs), Generalized Parton Distributions (GPDs), and Generalized Distribution Amplitudes (GDAs).
This talk was part of the program at the International Centre for Theoretical Sciences (ICTS-TIFR), Bengaluru, India.