Speaker
Description
The Standard Model (SM) of particle physics features a non-Abelian $SU(2)_{L} \times U(1)_{Y}$ gauge structure, necessitating the existence of triple and quartic interactions among the gauge bosons, known as triple gauge couplings (TGC) and quartic gauge couplings (QGC). These interactions are pivotal for testing the SM and exploring potential physics beyond it. The SM allows triple gauge boson interactions like $WWV$, $ZV\gamma$, and $ZZV$ ($V = \gamma, Z$). However, at the tree level, $ZZ\gamma$ and $Z\gamma\gamma$ couplings are zero due to the $Z$-boson's no electric charge. Deviations from SM predictions in these interactions can indicate new physics. This study aims to investigate these deviations using an effective theory approach, focusing on anomalous neutral triple gauge couplings (aNTGC) involving $ZZ\gamma$ and $Z\gamma\gamma$ vertices. The process $\mu^- \gamma \rightarrow \mu^- \gamma Z$ at a center-of-mass energy of 10 TeV has studied at the Muon Collider. Here, the photon in the initial state has chosen from the antimuon beam under Weizacker-Williams approximation(WWA). On the other hand, the decay of the $Z$-boson into a neutrino pair has considered in the final state($Z \rightarrow \nu_{l} \bar{\nu_{l}}$). This study emphasizes the examination of CP-violating couplings $C_{BB}/\Lambda^{4}$, $C_{WW}/\Lambda^{4}$, $C_{BW}/\Lambda^{4}$, and the CP-conserving coupling $C_{\tilde{B}W}/\Lambda^{4}$. A cut-based method is applied, and various kinematic variables are used to optimize signal and background events. The sensitivities are obtained at 95\% Confidence Level (C.L.) with an integrated luminosity of ${\cal L}_{int} = 10$ ab$^{-1}$. The sensitivities on the aNTGC surpass the latest experimental limits by a factor of 10-30 and are comparable with findings from existing phenomenological studies.
Details
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| Internet talk | Yes |
|---|---|
| Is this an abstract from experimental collaboration? | No |
| Name of experiment and experimental site | N/A |
| Is the speaker for that presentation defined? | No |
