Scholarlink

<p>We study the estimation of anomalous charged triple gauge couplings (cTGCs) parameterized in a model-independent Standard Model effective field theory (SMEFT) framework via <i>WW</i> production followed by semi-leptonic decay at the <i>e</i><sup>+</sup><i>e</i><sup>−</sup> colliders. The anomalous part of cTGCs, <i>WWV</i> (<i>V</i> = <i>γ</i>, <i>Z</i>), are given in terms of Wilson coefficients of three CP-conserving and two CP-violating dimension-6 operators in the HISZ basis. We adopt the optimal observable technique (OOT) to extract the sensitivity of these anomalous couplings and compare it with the latest experimental limits on anomalous couplings studied at the LHC. The limits on the anomalous couplings obtained via OOT are significantly tighter than the ones obtained using standard <i>χ</i><sup>2</sup> analysis. The impact of different combinations of the helicity of <i>W</i> boson pair in determining the optimal sensitivity is analyzed. The constraints on CP-violating operators from the electron electric dipole moment (EDM) are also discussed.</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

Optimal sensitivity of anomalous charged triple gauge couplings through W boson helicity at the e+e− colliders

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年7月29日

查看全文
  • Sahabub Jahedi,
  • Jayita Lahiri,
  • Amir Subba

摘要

We study the estimation of anomalous charged triple gauge couplings (cTGCs) parameterized in a model-independent Standard Model effective field theory (SMEFT) framework via WW production followed by semi-leptonic decay at the e+e− colliders. The anomalous part of cTGCs, WWV (V = γ, Z), are given in terms of Wilson coefficients of three CP-conserving and two CP-violating dimension-6 operators in the HISZ basis. We adopt the optimal observable technique (OOT) to extract the sensitivity of these anomalous couplings and compare it with the latest experimental limits on anomalous couplings studied at the LHC. The limits on the anomalous couplings obtained via OOT are significantly tighter than the ones obtained using standard χ2 analysis. The impact of different combinations of the helicity of W boson pair in determining the optimal sensitivity is analyzed. The constraints on CP-violating operators from the electron electric dipole moment (EDM) are also discussed.