Code

The code behind my research: what is public on GitHub, and what I share on request.

Open science

Code on GitHub

The code, data and figures behind my work. If you use them, please cite the repository.

Diffractive vector-meson production

Code, data and figures for ρ, φ, J/ψ and ψ(2S) production in the colour-dipole picture (arXiv:2609.39647).

Vector-Meson-Production-LFQM Code · data · figures

Pion- and kaon-to-photon TDAs

Leading-twist vector and axial π⁺ → γ and K⁺ → γ transition distribution amplitudes. Paper in preparation.

Pion-Kaon-Photon-TDAs-LFQM Figures · code on request

The deuteron on the light front

Twenty deuteron models as light-front wave functions: form factors, structure functions, GPDs and TMDs, compared with data.

Deuteron-Light-Front Figures · code on request

Curve Fit Bench

A free online curve fitter and data fitter for physicists: 440+ physical models, automatic model selection and uncertainties, all in the browser. With Shivani Malvi.

curvefitbench.github.io/app Free online app

Private repositories

Available on request

The code for these projects is kept private for now. It can be provided only on request, and I am happy to share it along with the notes.

TMDs and PDFs of the ρ meson

Mathematica notebooks for the transverse-momentum-dependent and collinear distributions of the spin-1 ρ meson (Phys. Rev. D 113, 036030 (2026); arXiv:2511.10981).

🔒 Private Request the code

Gravitational form factors of the ρ meson

The energy-momentum tensor of the ρ meson on the light front: its gravitational form factors and mechanical distributions.

🔒 Private Request the code

Mechanical structure of the kaon

Gravitational form factors and the pressure and shear-force distributions inside the charged kaon in the light-front quark model.

🔒 Private Request the code

Generalized distribution amplitude of the pion

The pion's generalized distribution amplitude from the light-front quark model.

🔒 Private Request the code

E1 radiative transitions of mesons

Electric-dipole radiative transitions of charmonium, bottomonium, D and B mesons in the light-front quark model.

🔒 Private Request the code

M2 and E3 multipoles in quarkonium

Magnetic-quadrupole and electric-octupole amplitudes in charmonium and bottomonium radiative transitions in the light-front quark model.

🔒 Private Request the code

Meson decays, from the pion to bottomonium

Decays of mesons from the pion to bottomonium in the light-front quark model, compared with the PDG.

🔒 Private Request the code

How to ask

Write to puhansatyajit@gmail.com, or use the contact page, saying who you are and what you would like to use the code for. If you follow research ethics, I will be happy to work with you and to share the code along with the notes.