Data-taking strategy for the precise measurement of the W boson mass with a threshold scan at circular electron positron colliders

Author:

Shen P. X.ORCID,Azzurri P.,Yu C. X.,Boonekamp M.,Kuo C. M.,Lai P. Z.,Li B.,Li G.,Li H. N.,Liang Z. J.,Liu B.,Qian J. M.,Shi L. S.

Abstract

AbstractCircular electron positron colliders, such as the CEPC and FCC-ee, have been proposed to measure Higgs boson properties precisely, test the Standard Model, search for physics beyond the Standard Model, and so on. One of the important goals of these colliders is to measure the W boson mass with great precision by taking data around the W-pair production threshold. In this paper, the data-taking scheme is investigated to maximize the achievable precisions of the W boson mass and width with a threshold scan, when various systematic uncertainties are taken into account. The study shows that an optimal and realistic data-taking scheme is to collect data at three center-of-mass energies and that precisions of 1.0 MeV and 3.4 MeV can be achieved for the mass and width of the W boson, respectively, with a total integrated luminosity of $$\mathscr {L}=3.2$$L=3.2 ab$$^{-1}$$-1 and several assumptions of the systematic uncertainty sources.

Funder

Beijing Municipal Science and Technology Commission project

Joint Large-Scale Scientific Facility Funds of the NSFC and CAS

National Natural Science Foundation of China

the Hundred Talents Program of the Chinese Academy of Sciences

National Key Program for S&T Research and Development of China

National Key Basic Research Program of China

Publisher

Springer Science and Business Media LLC

Subject

Physics and Astronomy (miscellaneous),Engineering (miscellaneous)

Cited by 3 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Physics Highlights at CEPC;Nuclear and Particle Physics Proceedings;2023-07

2. Top quark mass measurements at the $$t\bar{t}$$ threshold with CEPC;The European Physical Journal C;2023-04-01

3. The W mass and width measurement challenge at FCC-ee;The European Physical Journal Plus;2021-12

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