تقرير
Indirect Search for Lepton Flavour Violating Signals at the Future Electron-Proton Colliders
| العنوان: | Indirect Search for Lepton Flavour Violating Signals at the Future Electron-Proton Colliders |
|---|---|
| المؤلفون: | Barik, Anjan Kumar, Dey, Atri, Samui, Tousik |
| سنة النشر: | 2023 |
| المجموعة: | High Energy Physics - Experiment High Energy Physics - Phenomenology |
| مصطلحات موضوعية: | High Energy Physics - Phenomenology, High Energy Physics - Experiment |
| الوصف: | The search for lepton flavor violation (LFV) is a powerful probe to look for new physics beyond the Standard Model. We explored the possibility of searches for LFV $Z$ boson couplings to electron and muon pair at the upcoming electron-proton colliders, namely the Large Hadron Electron Collider (LHeC) and the Future Circular lepton-hadron Collider (FCC-eh). We employed the study via a single muon plus an associated jet channel to search for the LFV signal. We used a multivariate technique to obtain an improved signal-background analysis. By using the condition on nonobservation of any significant deviation of the signal over the expected background, we provide an upper limit on the LFV $Z$ boson coupling and corresponding branching ratio. We find that an upper limit of $2.0\times 10^{-7}$ and $1.5 \times 10^{-7}$ the can be set on BR($Z\to e \mu$) at 95\% C.L. with one year run of LHeC and FCC-eh, respectively, if the LFV coupling is governed by vector or axial-vector coupling. For tensor or axial-tensor coupling these limits can be improved to $2.9\times 10^{-8}$ and $1.5\times 10^{-8}$ for LHeC and FCC-eh machines, respectively. The projected numbers improve significantly over the existing limit of $2.6\times 10^{-7}$ set by ATLAS. Comment: 19 pages, 6 tables and 6 figures |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2306.10540 |
| رقم الأكسشن: | edsarx.2306.10540 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |