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Probing lepton flavor violation via $e\tau$ production in an effective framework at a future electron-positron circular collider
by S. M. Etesami, R. Jafari, M. Mohammadi Najafabadi and S. Tizchang
This is not the latest submitted version.
Submission summary
| Authors (as registered SciPost users): | Reza Jafari |
| Submission information | |
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| Preprint Link: | scipost_202112_00046v1 (pdf) |
| Date submitted: | 2021-12-20 11:40 |
| Submitted by: | Jafari, Reza |
| Submitted to: | SciPost Physics Proceedings |
| Proceedings issue: | 16th International Workshop on Tau Lepton Physics (TAU2021) |
| Ontological classification | |
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| 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 some beyond the standard model scenarios. 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 of $157.5$, $162.5$, $240$ and $365$ GeV that proposed for the FCC-ee, a standard model effective field theory is considered. The main source of backgrounds are taken into account and the study is performed by including realistic effects of the detector. To improve the result, we combine the individual constraints obtained for each center of mass energy. We show that, the combined limits increase the sensitivity to lepton flavor violation couplings by a factor of around three with respect to the individual results and are comparable to the Belle II prospects.
Current status:
Reports on this Submission
Report #1 by Swagato Banerjee (Referee 1) on 2024-11-30 (Invited Report)
Report
Charged lepton flavor violation in e+e- -> e+- tau-+ production via four-fermion interaction are studied at the future electron-positron circular collider at center-of-mass energies of 157.5, 162.5, 240 and 365 GeV with the integrated luminosities of 5,5,5, and 1.5 ab−1, respectively. The combined limits are found to increase the sensitivity to lepton flavor violation couplings by a factor of around three with respect to the individual results and are comparable to the prospects at the Belle II experiment with 50 ab−1 of luminosity.
The scientific quality of the contribution is high. Minor corrections are requested.
Requested changes
Abstract: that proposed for the FCC-ee, -> that have been proposed for the FCC-ee,
Introduction: charged leptons flavor -> charged lepton's flavor
Introduction: at three level interactions -> at tree level interactions
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