SciPost Submission Page
Feasibility of tau g-2 measurements in ultra-peripheral collisions of heavy ions
by Nazar Burmasov, Evgeny Kryshen, Paul Buehler, Roman Lavicka
Submission summary
| Authors (as registered SciPost users): | Evgeny Kryshen |
| Submission information | |
|---|---|
| Preprint Link: | https://arxiv.org/abs/2203.00990v2 (pdf) |
| Date accepted: | 2024-12-18 |
| Date submitted: | 2024-12-03 07:54 |
| Submitted by: | Kryshen, Evgeny |
| 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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| Approaches: | Experimental, Phenomenological |
Abstract
The anomalous magnetic moment of the tau lepton, a_tau = (g_tau - 2)/2, is a sensitive probe of new physics but is extremely difficult to measure precisely in contrast to electron and muon moments. The best experimental limits were set by the DELPHI collaboration more than 15 years ago in studies of the ditau production in the e+e -> e+e+tau+tau process. Ultra-peripheral collisions (UPCs) of heavy ions at the LHC may provide a unique opportunity to improve the a_tau constraints in the studies of Pb+Pb -> Pb+Pb+tau+tau process. We review recent proposals to study ditau production via semi-leptonic tau decays in Pb-Pb UPC with the available ATLAS and CMS data and discuss the feasibility to explore this process down to low transverse momenta of decay leptons with the ALICE and LHCb experiments.
Current status:
Editorial decision:
For Journal SciPost Physics Proceedings: Publish
(status: Editorial decision fixed and (if required) accepted by authors)