{"title":"Charm- and Bottom-Quark Masses: Recent Sum Rule Results","authors":"J. Kühn","doi":"10.22323/1.303.0007","DOIUrl":null,"url":null,"abstract":"Recent experimental results on the cross section for electron-positron annihilation into hadrons \nin the low energy region between roughly 3 GeV and 10 GeV, combined with an improved \ndetermination of the strong coupling and increasingly precise theory results on sum rules have \nlead to determinations of charm- and bottom-quark masses with accuracies of around 10 MeV. \nThe final results, expressed in the MS scheme, have lead to $m_{c}$ (3 GeV) = 993(8) MeV and \n$m_{b}$ $(m_{b})$ = 4163(16) MeV, and are thus among the most precise determinations of these standard \nmodel parameters. These results are, furthermore, nicely consistent with completely independent \nlattice results and allow precise predictions for a number of experimental observables like Higgs \ndecays into charm- or bottom-quarks. A critical analysis of the theoretical and experimental un- \ncertainties of this analysis is presented in the following.","PeriodicalId":140132,"journal":{"name":"Proceedings of Loops and Legs in Quantum Field Theory — PoS(LL2018)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2018-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of Loops and Legs in Quantum Field Theory — PoS(LL2018)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.22323/1.303.0007","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
Recent experimental results on the cross section for electron-positron annihilation into hadrons
in the low energy region between roughly 3 GeV and 10 GeV, combined with an improved
determination of the strong coupling and increasingly precise theory results on sum rules have
lead to determinations of charm- and bottom-quark masses with accuracies of around 10 MeV.
The final results, expressed in the MS scheme, have lead to $m_{c}$ (3 GeV) = 993(8) MeV and
$m_{b}$ $(m_{b})$ = 4163(16) MeV, and are thus among the most precise determinations of these standard
model parameters. These results are, furthermore, nicely consistent with completely independent
lattice results and allow precise predictions for a number of experimental observables like Higgs
decays into charm- or bottom-quarks. A critical analysis of the theoretical and experimental un-
certainties of this analysis is presented in the following.