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arXiv 2307.16111hep-phhep-ex
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μ子对撞机上最小左右对称模型的双电荷标量粒子

Doubly-charged scalars of the Minimal Left-Right Symmetric Model at Muon Colliders

Mohamed Belfkir, Talal Ahmed Chowdhury, Salah Nasri

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AI总结：

本研究探究μ子对撞机探测最小左右对称模型双电荷标量粒子的前景，分析其产生与衰变过程，指出同电荷电子μ子对道灵敏度最高，极化束可提升灵敏度，并能对1.1-5TeV质量区间的相关汤川耦合设排除限。

摘要：

我们探究了在μ子对撞机上探测最小左右对称模型（MLRSM）双电荷标量粒子的前景。我们通过研究双电荷标量粒子的产生及其随后衰变为含同电荷轻子对的四带电轻子末态的过程，评估了μ子对撞机的探测能力。研究发现，含同电荷电子对与μ子对的道（即$e^{\pm}e^{\pm}μ^{\u2213}μ^{\u2213}$及其电荷共轭对）因标准模型背景最低而具有最高的灵敏度。此外，我们表明在μ子对撞机中使用完全极化的初始μ子束可提升对MLRSM双电荷标量粒子的探测灵敏度。进一步地，我们证实对于质量在$1.1-5$ TeV范围内的双电荷标量粒子，可对与MLRSM中微子区直接相关的三重态汤川耦合的大小设定排除限。

英文摘要：

We investigate the prospects of probing the doubly-charged scalars of the minimal Left-Right Symmetric model (MLRSM) at a muon collider. We assess its capability by studying the production of doubly-charged scalars and their subsequent decay into four charged lepton final states containing the same-charge lepton pairs. We find that the channels with same-charge electron and muon pairs, i.e., ($e^{\pm}e^{\pm}μ^{\mp}μ^{\mp}$ and its charge conjugated pairs), have the largest sensitivity due to the lowest Standard Model background. Besides, we show that the possibility of using fully polarized initial muon beams in the muon collider can enhance the detection sensitivity of doubly-charged scalars of the MLRSM. Furthermore, we show that one can put exclusion limits on the magnitudes of triplet Yukawa couplings that are directly related to the neutrino sector of the MLRSM for the mass range $1.1-5$ TeV of the doubly-charged scalars.

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