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Precision $e^-$ Beam Polarimetry at an $e^+e^-$ B Factory using Tau-Pair Events
by Caleb Miller
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Submission summary
| Authors (as registered SciPost users): | Caleb Miller |
| Submission information | |
|---|---|
| Preprint Link: | scipost_202406_00020v1 (pdf) |
| Date accepted: | Jan. 30, 2025 |
| Date submitted: | June 11, 2024, 1:42 a.m. |
| Submitted by: | Miller, Caleb |
| 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
A novel technique for measuring the average beam polarization in $e^+e^-$ collisions, known as Tau Polarimetry, has been developed by the \babar~collaboration. This technique makes use of the relationship between the polarization of the beams, the resulting polarization of the $\tau^+\tau^-$ produced, and the kinematics of the decay products. Using this technique \babar~has measured the average $e^-$ beam polarization of PEP-II to be 0.0034 $\pm$ 0.0024$_{\textrm{stat}} \pm $0.0029$_{\textrm{sys}}$. This technique is expected to be used at Belle~II after a proposed polarization upgrade as the most precise method with which beam polarization can be determined.
Published as SciPost Phys. Proc. 17, 011 (2025)
Reports on this Submission
Report #1 by Swagato Banerjee (Referee 1) on 2024-11-24 (Invited Report)
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