Precision $e^-$ beam polarimetry at an $e^+e^-$ B factory using tau-pair events
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...
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2025-07-01
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| Series: | SciPost Physics Proceedings |
| Online Access: | https://scipost.org/SciPostPhysProc.17.011 |
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| author | Caleb Miller |
| author_facet | Caleb Miller |
| author_sort | Caleb Miller |
| collection | DOAJ |
| description | 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 $± 0.0024_{stat} ± 0.0029_{sys}$. 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. |
| format | Article |
| id | doaj-art-d5e19b4fb1ce4ca9a2892f77d398d04d |
| institution | Matheson Library |
| issn | 2666-4003 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | SciPost |
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| series | SciPost Physics Proceedings |
| spelling | doaj-art-d5e19b4fb1ce4ca9a2892f77d398d04d2025-07-23T09:47:24ZengSciPostSciPost Physics Proceedings2666-40032025-07-011701110.21468/SciPostPhysProc.17.011Precision $e^-$ beam polarimetry at an $e^+e^-$ B factory using tau-pair eventsCaleb MillerA 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 $± 0.0024_{stat} ± 0.0029_{sys}$. 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.https://scipost.org/SciPostPhysProc.17.011 |
| spellingShingle | Caleb Miller Precision $e^-$ beam polarimetry at an $e^+e^-$ B factory using tau-pair events SciPost Physics Proceedings |
| title | Precision $e^-$ beam polarimetry at an $e^+e^-$ B factory using tau-pair events |
| title_full | Precision $e^-$ beam polarimetry at an $e^+e^-$ B factory using tau-pair events |
| title_fullStr | Precision $e^-$ beam polarimetry at an $e^+e^-$ B factory using tau-pair events |
| title_full_unstemmed | Precision $e^-$ beam polarimetry at an $e^+e^-$ B factory using tau-pair events |
| title_short | Precision $e^-$ beam polarimetry at an $e^+e^-$ B factory using tau-pair events |
| title_sort | precision e beam polarimetry at an e e b factory using tau pair events |
| url | https://scipost.org/SciPostPhysProc.17.011 |
| work_keys_str_mv | AT calebmiller precisionebeampolarimetryataneebfactoryusingtaupairevents |