New weakly-coupled forces hidden in low-energy QCD
New weakly-coupled forces hidden in low-energy QCD
复制标题
低能QCD中隐藏的新弱耦合力
DOI：
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
S. Tulin
中科院分区：
文献类型：
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作者：
S. Tulin
是否有可能在 QCD 尺度上检测到主要与夸克相互作用的新弱耦合力？这项工作研究了与重子数耦合的新 MeV-GeV 规范玻色子的实验特征，重点关注 100 MeV-GeV 质量范围，即非微扰 QCD 范围。这种状态可以在轻介子 ( η 、 η ′ 、 phi 、 ω ) 的罕见辐射衰变中作为 π 0 γ 共振进行搜索，这是其从 140 MeV 到 620 MeV 的主要衰变模式。这是一个新的发现窗口，用于发现现有暗光子搜索未涵盖的标准模型之外的力。
Is it possible to detect a new weakly coupled force at the QCD scale that interacts primarily with quarks? This work investigates experimental signatures of a new MeV–GeV gauge boson that couples to the baryon number, with attention to the 100 MeV–GeV mass range that is the regime of nonperturbative QCD. Such a state can be searched for in rare radiative decays of light mesons ( η , η ′ , ϕ , ω ) as a π 0 γ resonance, which is its leading decay mode from 140 to 620 MeV. This is a new discovery window for forces beyond the Standard Model that is not covered by existing dark photon searches.