Scholarlink

<p>The cone isolation criterion used in large-pt photon experiments generates logarithms of the cone radius in the theoretical cross sections. When a small radius is used, unitarity is violated as the inclusive cross section is smaller than the isolated one. We show that unitarity is restored when these logarithms are resummed. We also study a criterion which offers a more precise description of the experimental procedure: no isolation is imposed in a very small cone inside the standard one. In this case as well unitarity is violated and the resummation of logarithms is required.</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

Isolated photon cross section and resummation of the logarithms of the cone radius

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年10月1日

查看全文
  • M. Fontannaz,
  • J. Ph. Guillet

摘要

The cone isolation criterion used in large-pt photon experiments generates logarithms of the cone radius in the theoretical cross sections. When a small radius is used, unitarity is violated as the inclusive cross section is smaller than the isolated one. We show that unitarity is restored when these logarithms are resummed. We also study a criterion which offers a more precise description of the experimental procedure: no isolation is imposed in a very small cone inside the standard one. In this case as well unitarity is violated and the resummation of logarithms is required.