Jet-Origin Identification and Its Application at an Electron-Positron Higgs Factory.
Phys Rev Lett
; 132(22): 221802, 2024 May 31.
Article
em En
| MEDLINE
| ID: mdl-38877918
ABSTRACT
To enhance the scientific discovery power of high-energy collider experiments, we propose and realize the concept of jet-origin identification that categorizes jets into five quark species (b,c,s,u,d), five antiquarks (b[over ¯],c[over ¯],s[over ¯],u[over ¯],d[over ¯]), and the gluon. Using state-of-the-art algorithms and simulated νν[over ¯]H,Hâjj events at 240 GeV center-of-mass energy at the electron-positron Higgs factory, the jet-origin identification simultaneously reaches jet flavor tagging efficiencies ranging from 67% to 92% for bottom, charm, and strange quarks and jet charge flip rates of 7%-24% for all quark species. We apply the jet-origin identification to Higgs rare and exotic decay measurements at the nominal luminosity of the Circular Electron Positron Collider and conclude that the upper limits on the branching ratios of Hâss[over ¯],uu[over ¯],dd[over ¯] and Hâsb,db,uc,ds can be determined to 2×10^{-4} to 1×10^{-3} at 95% confidence level. The derived upper limit for Hâss[over ¯] decay is approximately 3 times the prediction of the standard model.
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Base de dados:
MEDLINE
Idioma:
En
Revista:
Phys Rev Lett
/
Phys. rev. lett
/
Physical review letters
Ano de publicação:
2024
Tipo de documento:
Article
País de afiliação:
China