TY  - JOUR
PB  - SciPost Foundation
DO  - 10.21468/SciPostPhysProc.17.011
TI  - Precision $e^-$ beam polarimetry at an $e^+e^-$ B factory using tau-pair events
PY  - 2025/07/23
UR  - https://scipost.org/SciPostPhysProc.17.011
JF  - SciPost Physics Proceedings
JA  - SciPost Phys. Proc.
VL  - 
IS  - 17
SP  - 011
A1  - Miller, Caleb
AB  - 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.
ER  -

@Article{10.21468/SciPostPhysProc.17.011,
	title={{Precision $e^-$ beam polarimetry at an $e^+e^-$ B factory using tau-pair events}},
	author={Caleb Miller},
	journal={SciPost Phys. Proc.},
	pages={011},
	year={2025},
	publisher={SciPost},
	doi={10.21468/SciPostPhysProc.17.011},
	url={https://scipost.org/10.21468/SciPostPhysProc.17.011},
}