Work

Transverse spin correlation of back-to-back dihadrons in unpolarized collisions

Year: 2025

Type: article

Abstract: The spin correlation of back-to-back dihadrons emerges in unpolarized high-energy collision, empowering unpolarized experiments to shed light on the spin-dependent fragmentation functions. This work investigates the transverse spin correlation of back-to-back dihadrons in unpolarized e + e − , p p , and γ p collisions, which serves as a novel probe of the chiral-odd fragmentation function H 1 T ( z ) . We compute the transverse spin correlation at the partonic level and establish a connection with helicity amplitudes. Measuring this observable in future experiments can reveal valuable information on the hadronization of transversely polarized quarks.

Source: Physical review. D/Physical review. D.

DOI: 10.1103/physrevd.111.054035

Authors: Lei Yang, Yu-Kun Song, Shu-Yi Wei

Institutions: Shandong University, University of Jinan

Language: English

Topic: Quantum Chromodynamics and Particle Interactions

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Funders: National Natural Science Foundation of China, Natural Science Foundation of Shandong Province