SciPost Submission Page
Searches for New Physics that couple with third generation fermions
by Valeria D’Amante on behalf of the CMS Collaboration
Submission summary
| Authors (as registered SciPost users): | Valeria D'Amante |
| Submission information | |
|---|---|
| Preprint Link: | scipost_202406_00047v1 (pdf) |
| Date accepted: | 2025-01-07 |
| Date submitted: | 2024-06-19 19:59 |
| Submitted by: | D'Amante, Valeria |
| Submitted to: | SciPost Physics Proceedings |
| Proceedings issue: | 17th International Workshop on Tau Lepton Physics (TAU2023) |
| Ontological classification | |
|---|---|
| Academic field: | Physics |
| Specialties: |
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| Approach: | Experimental |
Abstract
The τ lepton, with a mass of 1776.86±0.12 MeV, is unique in its ability to decay into hadrons and a neutrino. Approximately one-third of τ decays produce an electron or a muon and two neutrinos, denoted as τe and τμ. The remaining decays, mainly involving hadrons and a tau neutrino, are denoted as τh. At the CERN LHC, searches involving τ leptons are crucial for studying the decay of Higgs bosons to τ pairs, probing Yukawa couplings, and CP properties of the Higgs. These measurements support Standard Model (SM) tests and searches for Beyond Standard Model (BSM) physics, including new or heavy Higgs bosons, leptoquarks, supersymmetric particles, or gauge bosons. The τ lepton polarization in Z boson decays is also significant for probing the SM. Despite its potential as a portal to new physics, the τ lepton’s decay products, especially neutrinos and hadrons, make its reconstruction and identification challenging at the LHC. At the CMS experiment, neutrinos contribute to Missing Transverse Energy (MET), and hadronically decaying τ leptons are often misidentified as jets, complicating the separation of τ -involved processes from background processes.
Current status:
Editorial decision:
For Journal SciPost Physics Proceedings: Publish
(status: Editorial decision fixed and (if required) accepted by authors)
Reports on this Submission
Report #1 by Swagato Banerjee (Referee 1) on 2024-11-25 (Invited Report)
Report
Tau leptons are crucial to probe the Standard Model (SM) and to search for Beyond Standard Model (BSM) physics involving leptons. At the CMS experiment, neutrinos from τ leptons contribute to Missing Transverse Energy (MET), and hadronically decaying τ leptons are often misidentified as jets, complicating the separation of τ -involved processes from background processes. During Run 2, there was limited optimization at the trigger level in this area, but in Run 3 new machine-learning based algorithms have been improved for the online (trig- ger) reconstruction. CL exclusion limits (expected and observed) are derived from 2016–2018 data, for the physics models studied in this analysis: sequential standard model (SSM), nonuniversal gauge interaction model (NUGIM), a quantum black hole (QBH) interpretation, t-channel leptoquark (LQ), and effective field interpretation (EFT).
The overall scientific quality of this contribution is high. Perhaps one typo could be corrected if the authors choose to do so: do not capitalize "Implemented in software" in 2nd last sentence in Section 1.
Recommendation
Publish (surpasses expectations and criteria for this Journal; among top 10%)