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Electric and Magnetic Tau Dipole Moments Revisited

by G. A. González-Sprinberg

This is not the latest submitted version.

Submission summary

Authors (as registered SciPost users): Gabriel Gonzalez-Sprinberg
Submission information
Preprint Link: https://arxiv.org/abs/2406.15286v1  (pdf)
Date submitted: 2024-06-24 18:45
Submitted by: Gonzalez-Sprinberg, Gabriel
Submitted to: SciPost Physics Proceedings
Proceedings issue: 17th International Workshop on Tau Lepton Physics (TAU2023)
Ontological classification
Academic field: Physics
Specialties:
  • High-Energy Physics - Experiment
  • High-Energy Physics - Theory
  • High-Energy Physics - Phenomenology
Approaches: Theoretical, Experimental, Phenomenological

Abstract

Precise measurements of magnetic and electric dipole moments are important tests of the Standard Model and beyond Standard Model physics, particularly for the electron and the muon. However, the situation presents distinctive challenges when dealing with the tau lepton due to its very short lifetime and relatively high mass. Here, we review the theoretical predictions and experimental measurements of both the anomalous magnetic and electric dipole moments of the tau lepton.

Current status:
Has been resubmitted

Reports on this Submission

Report #1 by Anonymous (Referee 1) on 2024-11-26 (Invited Report)

Strengths

1. This is a timely review. It is relevant for searches for BSM and coincides with the running of Belle II.

2. It is a brief but thorough review of the history and current status of EDM and MDM of the tau lepton.

3. It is generally well-written.

Weaknesses

1. Some English needs to be improved.

Report

This is a conference proceeding publication. The paper is in the right place.

Requested changes

1. The second sentence in the Introduction needs two specific fixes for English: remove "of" in "of the electron" and remove the comma in the sentence.

2. The third line in the Introduction is unclear. Does "the results" refer to the measurements, the theory, or both? Presumably, the word "former" refers to the Tau magnetic dipole moment, but there is some ambiguity. Perhaps what was meant was something like "However, progress in the tau system has been slow and measurements of dipole moments of the tau are not aligned with SM predictions."

3. Page 2, right below equation (2): "EDM tensor structure is a chirality flipping magnitude". Is the tensor structure a magnitude? Did you mean it corresponds to a magnitude? Please make this a bit clearer.

Recommendation

Publish (meets expectations and criteria for this Journal)

  • validity: good
  • significance: good
  • originality: good
  • clarity: good
  • formatting: good
  • grammar: reasonable

Author:  Gabriel Gonzalez-Sprinberg  on 2024-11-29  [id 5006]

(in reply to Report 1 on 2024-11-26)
Category:
validation or rederivation

Thanks for the comments, that have been fully taken into account.

  1. changes done

  2. ambiguity eliminated in this sentence "However, the measurements for both the magnetic and electric DMs of the tau slowly evolved, and the measurements are still very far from the SM predictions, in particular for the former \cite{pdg}."

  3. the word magnitude, which induces some confusion, is eliminated: "EDM tensor structure flips chirality and then it is proportional to the chirality flipping particle's mass."

These changes appear in the replacement for arXiv 2406.15286 that is to be announced at Mon, 2 Dec 2024 01:00:00 GMT.

Attachment:

SciPost_Proceedings_TAU2023_GAGS2.pdf

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