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Transverse energy-energy correlators in the color-glass condensate at the electron-ion collider

2024; American Physical Society; Volume: 109; Issue: 9 Linguagem: Inglês

10.1103/physrevd.109.094012

2470-0037

Zhong-Bo Kang, Jani Penttala, F. Zhao, Yiyu Zhou,

Particle physics theoretical and experimental studies

We investigate the transverse energy-energy correlators (TEEC) in the small- x regime at the upcoming Electron-Ion Collider (EIC). Focusing on the back-to-back production of electron-hadron pairs in both e p and e A collisions, we establish a factorization formula given in terms of the hard function, quark distributions, soft functions, and TEEC jet functions, where the gluon saturation effect is incorporated. Numerical results for TEEC in both e p and e A collisions are presented, together with the nuclear modification factor R A . Our analysis reveals that TEEC observables in deep inelastic scattering provide a valuable approach for probing gluon saturation phenomena. Our findings underscore the significance of measuring TEEC at the EIC, emphasizing its efficacy in advancing our understanding of gluon saturation and nuclear modifications in high-energy collisions. Published by the American Physical Society 2024