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包含电子离子对撞机数据对强合确定在全球PDF匹配中的影响

L A Harland-Lang¹, T Cridge^2,3, P Newman⁴

¹Department of Physics and Astronomy, University College London, London, WC1E 6BT UK.

The European physical journal. C, Particles and fields

|March 6, 2026

概括

即将推出的电子离子碰撞器 (EIC) 将大大改善强合常数的测量. 预计EIC数据对于精确测定质子将至关重要.

科学领域:

高能物理学的高能物理学
量子色态动力学是一个量子色态动力学.
碰撞器的物理学

背景情况:

强合常数 (αs) 是量子染色力学的一个基本参数.
精确确定αs对于理解强力和质子结构至关重要.
电子离子对撞机 (EIC) 是一个计划中的设施,旨在探测子的结构.

研究的目的:

调查电子离子碰撞器 (EIC) 数据对强合常数 (αs) 确定的影响.
评估来自EIC的不同实验不确定性预测对全球匹配的影响.
为了探索由于数据紧张而导致的αs确定中的潜在偏差.

主要方法:

生成模拟EIC电子质子散射的伪数据.
包括保守和乐观的实验不确定性场景.
在全球MSHT框架内同时安装以提取质子和分子分布函数 (PDF) 和αs.
通过将不一致性注入伪数据来分析数据紧张性.

主要成果:

保守的EIC不确定性预测对αs确定性的适度但不可忽视的影响.
乐观的EIC不确定性预测对αs确定性的重大影响.
当EIC数据与现有数据集之间存在紧张关系时,在αs提取中可能出现明显的偏差.

结论:

在提高强合常数的精度方面,EIC具有显著的前景.
仔细考虑理论不确定性和错误定义对于可靠的αs确定至关重要.
欧洲信息委员会的潜在影响强调了需要强大的分析方法来处理潜在的数据不一致.

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