SciPost Submission Page
Probing lepton flavor violation via $e\tau$ production in an effective framework at a future electron-positron circular collider
by Seyed Mohsen Etesami, Reza Jafari, Mojtaba Mohammadi Najafabadi and Seddigheh Tizchang
Submission summary
| Authors (as registered SciPost users): | Reza Jafari |
| Submission information | |
|---|---|
| Preprint Link: | scipost_202112_00046v2 (pdf) |
| Date accepted: | 2024-12-18 |
| Date submitted: | 2024-12-06 12:14 |
| Submitted by: | Jafari, Reza |
| Submitted to: | SciPost Physics Proceedings |
| Proceedings issue: | 16th International Workshop on Tau Lepton Physics (TAU2021) |
| Ontological classification | |
|---|---|
| Academic field: | Physics |
| Specialties: |
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| Approach: | Phenomenological |
Abstract
In the standard model framework, lepton flavor is conserved in the interactions, however, it can be violated in certain scenarios beyond the standard model. In this study, we consider $e^{\pm}\tau^{\mp}$ production through a four-Fermi lepton flavor violation interaction at the future electron-positron circular collider (FCC-ee). To constrain the Wilson coefficients at four center-of-mass energies ($157.5$), ($162.5$), ($240$), and ($365$) GeV that have been proposed for the FCC-ee, a standard model effective field theory (SMEFT) is used. The main sources of background are accounted for, and the study incorporates realistic detector effects. To enhance the results, we combine the individual constraints obtained at each center-of-mass energy. We show that the combined limits improve the sensitivity to lepton flavor violation couplings by a factor of approximately three compared to the individual results and are competitive with the Belle II prospects.
Author comments upon resubmission
List of changes
All comments have been considered and corrected in the revised version of the proceeding file, listed below:
1- In the Abstract section: "that proposed for the FCC-ee" is corrected by "that have been proposed for the FCC-ee"
2- In the Introduction part: "charged leptons flavor" is replaced by "charged lepton's flavor"
3- In the Introduction part: "three level interactions" is changed to "tree-level interactions"
- There were a few other grammatical issues that were corrected.
Current status:
Editorial decision:
For Journal SciPost Physics Proceedings: Publish
(status: Editorial decision fixed and (if required) accepted by authors)