单点电荷关联函数作为odderon的探针
One-point charge correlator as a probe for the odderon
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中文总结 AI 辅助
本文提出横向极化深度非弹性散射中的单点电荷关联函数作为自旋相关odderon的新探针,通过定义横向单自旋不对称性,并在小x框架下给出电子-离子对撞机运动学的估计,以提供定量约束。
中文摘要 AI 辅助
我们提出在横向极化深度非弹性散射中的单点电荷关联函数(OPCC)作为自旋相关odderon的新探针。OPCC是一种红外和共线安全的可观测量,仅由末态带电粒子的电荷和角度信息构成。由于电荷权重在电荷共轭下为奇,C偶性pomeron对OPCC的贡献在小-$x$ eikonal极限下严格为零,而C奇性自旋相关odderon的贡献则保留。我们通过将自旋相关的OPCC归一化到非极化的带电强子单点能量关联函数来定义横向单自旋不对称性。在小$x$下,该不对称性简化为自旋相关odderon与pomeron贡献之比。我们提供了在电子-离子对撞机运动学下,基于小-$x$偶极子框架并包含Balitsky--Kovchegov演化的该不对称性的示例性估计,以指导实验研究。使用横向极化质子束对OPCC不对称性进行专门测量,将为目前尚未约束的自旋相关odderon提供新的定量限制。
英文摘要
We propose the one-point charge correlator (OPCC) in transversely polarized deep inelastic scattering as a new probe of the spin-dependent odderon. The OPCC is an infrared and collinear safe observable constructed solely from the charge and angular information of final-state charged particles. Because the charge weight is odd under charge conjugation, the contribution of the C-even pomeron to the OPCC vanishes identically in the small-$x$ eikonal limit, whereas the contribution of the C-odd spin-dependent odderon survives. We define a transverse single-spin asymmetry by normalizing the spin-dependent OPCC to the unpolarized charged-hadron one-point energy correlator. At small $x$, this asymmetry reduces to a ratio of spin-dependent odderon and pomeron contributions. We provide illustrative estimates of this asymmetry for Electron-Ion Collider kinematics within the small-$x$ dipole framework with Balitsky--Kovchegov evolution to guide experimental studies. Dedicated measurements of the OPCC asymmetry with a transversely polarized proton beam would provide new quantitative constraints on the currently unconstrained spin-dependent odderon.
发表机构
- Northwestern University(西北大学)
- Stony Brook University(石溪大学)
- University of California, Los Angeles(加州大学洛杉矶分校)
- Mani L. Bhaumik Institute for Theoretical Physics, University of California, Los Angeles(加州大学洛杉矶分校马尼·L·巴乌米克理论物理研究所)
- Center for Frontiers in Nuclear Science, Stony Brook University(石溪大学核科学前沿中心)
- Université Paris-Saclay(巴黎萨克雷大学)
- CNRS/IN2P3, IJCLab(法国国家科学研究中心/法国原子能和替代能源委员会,IJCLab)
- Department of Physics and Astronomy, University of California, Los Angeles(加州大学洛杉矶分校物理与天文学系)
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