Scholarlink

<p>The transverse momentum dependent (TMD) factorization theorem accommodates various types of power corrections. Among them, the least studied are <i>q</i><sub><i>T</i></sub><i>/Q</i> corrections, which become significant at large values of transverse momentum. These corrections partially originate from higher-twist TMD distributions, which exhibit singularity at small transverse distances. We propose a decomposition that reveals this singularity explicitly, and makes the <i>q</i><sub><i>T</i></sub><i>/Q</i> correction manifest. As a concrete application, we consider the next-to-leading power correction for the angular distributions in Drell-Yan, and determine the leading <i>q</i><sub><i>T</i></sub><i>/Q</i> corrections. These corrections are significant for the angular distributions <i>A</i><sub>1</sub> and <i>A</i><sub>3</sub>, in complete agreement with the data.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Leading qT/Q correction for Drell-Yan process in TMD factorization

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年6月20日

查看全文
  • Arturo Arroyo-Castro,
  • Ignazio Scimemi,
  • Alexey Vladimirov

摘要

The transverse momentum dependent (TMD) factorization theorem accommodates various types of power corrections. Among them, the least studied are qT/Q corrections, which become significant at large values of transverse momentum. These corrections partially originate from higher-twist TMD distributions, which exhibit singularity at small transverse distances. We propose a decomposition that reveals this singularity explicitly, and makes the qT/Q correction manifest. As a concrete application, we consider the next-to-leading power correction for the angular distributions in Drell-Yan, and determine the leading qT/Q corrections. These corrections are significant for the angular distributions A1 and A3, in complete agreement with the data.