Volume 380 - Particles and Nuclei International Conference 2021 (PANIC2021) - QCD, spin physics and chiral dynamics
Prospects for the measurement of the $b$-quark mass at the ILC
S. Tairafune*, J. Fuster, A. Irles, G. Rodrigo, M. Vos, H. Yamamoto and R. Yonamine
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Pre-published on: March 02, 2022
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Abstract
Quark masses are one of the important parameters of the Standard Model, and ¥(b¥)-quark mass has been measured at various energy scales so far, and these results agree with QCD running mass prediction. This paper reports an assessment result of ¥(b¥)-quark mass measurement in future high-energy electron-positron colliders through the ILD full detector simulation. We present prospects for the measurement of the ratio of the three-jet rates ¥(R_3^{bl}¥) as the observable to extract ¥(b¥)-quark mass and estimated dominant uncertainties. It turns out that the precision of ¥(b¥)-quark mass is 1 GeV for the ILC 250 GeV run with the luminosity of 2 ab¥(^{-1}¥). Based on this result, we also estimated the ¥(b¥)-quark mass precision for the Giga-Z option, and it is 0.12 GeV. Thus, it is ¥(¥sim¥)3 times superior to the precision of LEP and SLD measurements.
DOI: https://doi.org/10.22323/1.380.0382
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