A4 Article in conference proceedings
Studying high pT momentum azimuthal anisotropies in unpolarized proton-proton collisions using transverse momentum dependent (TMD) parton distribution and fragmentation functions (2024)


Soudi, I., & Majumder, A. (2024). Studying high pT momentum azimuthal anisotropies in unpolarized proton-proton collisions using transverse momentum dependent (TMD) parton distribution and fragmentation functions. In A. Vossen, T. Mehen, M. Copeland, R. Hodges, G. Matousek, M. McEneaney, K. Parham, C. Pecar, & S. Schneider (Eds.), SPIN2023 : 25th International Symposium on Spin Physics (Article 164). Sissa. POS Proceedings of Science, 456. https://doi.org/10.22323/1.456.0164


JYU authors or editors


Publication details

All authors or editors: Soudi, Ismail; Majumder, Abhijit

Parent publication: SPIN2023 : 25th International Symposium on Spin Physics

Parent publication editors: Vossen, Anselm; Mehen, Thomas; Copeland, Marston; Hodges, Reed; Matousek, Gregory; McEneaney, Mathew; Parham, Katherine; Pecar, Connor; Schneider, Simon

Conference:

  • International Symposium on Spin Physics

Place and date of conference: Durham, Usa, 24.-29.9.2023

Journal or series: POS Proceedings of Science

eISSN: 1824-8039

Publication year: 2024

Publication date: 30/07/2024

Number in series: 456

Article number: 164

Publisher: Sissa

Publication country: Italy

Publication language: English

DOI: https://doi.org/10.22323/1.456.0164

Publication open access: Openly available

Publication channel open access: Open Access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/96857


Abstract

Recent experimental results have shown that small systems such as p-p and p-A collisions exhibit a non-zero azimuthal anisotropy even at large pT.However, no evidence of jet quenching has been observed in these collisions.
We investigate the possibility that the azimuthal anisotropy of high-pT hadrons can be generated by the intrinsic transverse momentum of the partons in the proton. After introducing transverse momentum dependent (TMD) parton distribution and fragmentation functions, additional polarization effects are allowed. Unpolarized protons can generate transversely polarized quarks or linearly polarized gluons through a distribution known as the Boer-Mulders' function.
The fragmentation of similarly polarized partons to unpolarized hadrons is called the Collins' function. We find that the high-pT azimuthal anisotropies can be obtained using these TMD distributions without modification to the angle integrated spectra.


Keywords: hadrons; polarisation; particle physics


Contributing organizations


Related projects


Ministry reporting: Yes

VIRTA submission year: 2024

Preliminary JUFO rating: 0


Last updated on 2025-12-03 at 21:06