Scholarlink

<p>We present a comprehensive next-to-leading order (NLO) QCD sum rule analysis for light hybrid mesons with <i>J</i><sup><i>PC</i></sup> = 1<sup><i>−−</i></sup>, incorporating condensates up to dimension-8 and NLO corrections to the perturbative, gluon condensate, and four-quark condensate contributions. These corrections are found to be substantial and reveal the necessity of contributions beyond leading order. Employing both Laplace (LSR) and Gaussian (GSR) sum rules, our analysis predicts a mass in the conservative range of 2<i>.</i>1 – 2<i>.</i>4 GeV for the light 1<sup><i>−−</i></sup> hybrid. These predictions are significantly lower than previous leading-order (LO) estimates (around 2<i>.</i>9 GeV) and bridge the gap between QCD sum rules and other approaches. Our findings establish the <i>ϕ</i>(2170) resonance as a prime candidate for the light vector hybrid meson.</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

Revising the mass of light hybrid mesons: NLO QCD sum rules point to ϕ(2170) as a prime candidate

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年3月10日

查看全文
  • Shuang-Hong Li,
  • Zhuo-Ran Huang,
  • Wei Chen,
  • Hong-Ying Jin

摘要

We present a comprehensive next-to-leading order (NLO) QCD sum rule analysis for light hybrid mesons with JPC = 1−−, incorporating condensates up to dimension-8 and NLO corrections to the perturbative, gluon condensate, and four-quark condensate contributions. These corrections are found to be substantial and reveal the necessity of contributions beyond leading order. Employing both Laplace (LSR) and Gaussian (GSR) sum rules, our analysis predicts a mass in the conservative range of 2.1 – 2.4 GeV for the light 1−− hybrid. These predictions are significantly lower than previous leading-order (LO) estimates (around 2.9 GeV) and bridge the gap between QCD sum rules and other approaches. Our findings establish the ϕ(2170) resonance as a prime candidate for the light vector hybrid meson.