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SUMMARY:Probing Neutral Triple Gauge Couplings via Zγ(ℓ+ℓ−γ) Produ
 ction at e+e− Colliders
DTSTART;VALUE=DATE-TIME:20241025T061500Z
DTEND;VALUE=DATE-TIME:20241025T063000Z
DTSTAMP;VALUE=DATE-TIME:20260423T003554Z
UID:indico-contribution-4364@cern.ch
DESCRIPTION:Speakers: Danning Liu (TDLI\, SJTU)\nRef. arXiv:2404.15937 [he
 p-ph]\n\nNeutral triple gauge couplings (nTGCs) are absent in the Standard
  Model (SM) and at the dimension-6 level in the Standard Model Effective F
 ield Theory (SMEFT)\, arising first from dimension-8 operators. As such\, 
 they provide a unique window for probing new physics beyond the SM. These 
 dimension-8 operators can be mapped to nTGC form factors whose structure i
 s consistent with the spontaneously-broken electroweak gauge symmetry of t
 he SM. In this work\, we study the probes of nTGCs in the reaction $e^{+}e
 ^{−}$→Zγ with Z→ℓ$^{+}$ℓ$^{−}$(ℓ=e\,μ) at an e$^{+}$e$^{
 −}$ collider. We perform a detector-level simulation and analysis of thi
 s reaction at the Circular Electron Positron Collider (CEPC) with collisio
 n energy $\\sqrt{s}$ = 240 GeV and an integrated luminosity of 20 ab$^{−
 1}$. We present the sensitivity limits on probing the new physics scales o
 f dimension-8 nTGC operators via measurements of the corresponding nTGC fo
 rm factors.\n\nhttps://indico.particle.mephi.ru/event/436/contributions/43
 64/
LOCATION: Petrovskiy 2
URL:https://indico.particle.mephi.ru/event/436/contributions/4364/
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