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arXiv · 2408.03600

T-odd Wigner Distributions in boost-invariant longitudinal position space and Spin-momentum correlation in proton

Tanmay Maji
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Abstract

The boost invariant longitudinal position space variable $\sigma$, which is the Fourier conjugate to skewness $\xi$, unravels the longitudinal impact parameter information in a proton. Here, we investigate the skewness sensitivity of T-odd leading twist GTMDs within the Dokshitzer Gribov Lipatov Altarelli Parisi (DGLAP) region, considering a momentum transfer to longitudinal as well as transverse direction. The $\sigma$-space distributions of the T-odd sector show oscillatory patterns that are sensitive to the square of the total momentum transfer $-t$, which is analogous to the diffraction scattering of waves in Optics. An additional effect on the diffraction pattern is reported, caused by interference between transverse momentum transfer $\bfd$ to the transverse momentum $\bfp$ of quarks. We also present the correlation of proton spin to the transverse momentum of constituents through Sivers and Boer-Mulders Wigner Distributions in boost invariant longitudinal position space.

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Tanmay Maji. 2024-08-07. T-odd Wigner Distributions in boost-invariant longitudinal position space and Spin-momentum correlation in proton. https://doi.org/10.1016/j.nuclphysa.2026.123407

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