彩色偶极子S -矩阵框架中正向快速强子碰撞中伴随的喷流+电弱规范玻色子的产生

IF 5.3 2区物理与天体物理 Q1 Physics and Astronomy

Physical Review D Pub Date : 2025-05-01 DOI:10.1103/physrevd.111.074041

Yan B. Bandeira, Victor P. Gonçalves, Wolfgang Schäfer

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引用次数: 0

摘要

在彩色偶极子s矩阵框架内推导了pp和pA碰撞中以正向速度产生电弱规范玻色子（G=W±，Z0,γ）射流的截面。在考虑规范玻色子的纵向和横向极化的情况下，给出了qp→GqX过程在横向动量空间中微分截面的完整表达式。我们证明了最终公式可以用未积分胶子分布来表示，并重现了先前使用其他框架推导出的相关射流+γ和射流+Z0产生的结果。此外，我们推导了光谱的背靠背相关极限，并证明了它可以用非极化和线性极化的横向动量胶子分布来表示。我们的研究结果改进了pp或pA碰撞中在前进速度下，在离质子碎片区不远的地方，包含射流和彩色中性粒子产生的描述，并且是研究非线性QCD效应在两粒子相关中的影响的主要成分。2025年由美国物理学会出版

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Associated jet+electroweak gauge boson production in hadronic collisions at forward rapidities in the color-dipole S -matrix framework

The cross section for the associated production of a jet with an electroweak gauge boson (G=W±,Z0,γ) at forward rapidities in pp and pA collisions is derived within the color-dipole S-matrix framework. We present the full expressions for the differential cross section of the qp→GqX process in the transverse momentum space, considering the longitudinal and transverse polarizations of the gauge boson. We demonstrate that the final formulas can be expressed in terms of the unintegrated gluon distribution and reproduce previous results for the associated jet+γ and jet+Z0 production, derived using other frameworks. Moreover, we derive the back-to-back correlation limit of the spectra and show that it can be expressed in terms of the unpolarized and linearly polarized transverse momentum gluon distributions. Our results improve the description of the inclusive jet plus color neutral particle production at forward rapidities, not far from the proton fragmentation region, in pp or pA collisions, and are the main ingredient to study the impact of nonlinear QCD effects in two-particle correlations.

Published by the American Physical Society

2025

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来源期刊

Physical Review D 物理-天文与天体物理

CiteScore

9.20

自引率

36.00%

发文量

审稿时长

2 months

期刊介绍： Physical Review D (PRD) is a leading journal in elementary particle physics, field theory, gravitation, and cosmology and is one of the top-cited journals in high-energy physics. PRD covers experimental and theoretical results in all aspects of particle physics, field theory, gravitation and cosmology, including: Particle physics experiments, Electroweak interactions, Strong interactions, Lattice field theories, lattice QCD, Beyond the standard model physics, Phenomenological aspects of field theory, general methods, Gravity, cosmology, cosmic rays, Astrophysics and astroparticle physics, General relativity, Formal aspects of field theory, field theory in curved space, String theory, quantum gravity, gauge/gravity duality.