Precision study of $$ZZ\gamma $$ Z Z γ production including Z-boson leptonic decays at the ILC
نویسندگان
چکیده
منابع مشابه
Study of Hadronic Decays of the Z Boson at Lep
Each of the four LEP experiments has recorded around 4 million hadronic Z decays, mostly in the period between 1990 and 1995. The analysis of the main physics topics on this subject has been essentially completed, but a few specific points are still under investigation, especially in the QCD sector. This report summarizes four recent papers on the characteristics of the hadronic decays of the Z...
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We study radiative decay modes of the Z-boson into heavy quark bound states. We find that the widths for these decays are extremely small. We conclude that these decays will not be detectable for the time being unless there is a significant increase in the number of Z-bosons produced at the electronpositron colliders. Rare decays of the Z-boson have recently been studied at the ee colliders, CE...
متن کاملHadron Radiation in Leptonic Z Decays
The rate for the final state radiation of hadrons in leptonic Z decays is evaluated, using as input experimental data for σ(e+e− → hadrons) in the low energy region. Configurations with a lepton pair of large and a hadronic state of low invariant mass are dominant. A relative rate Γll̄had/Γll̄ = 6.3×10−4 is calculated. This result is about twice the prediction based on a parton model calculation ...
متن کاملStudy of the Z Boson at LEP
The Z line shape is measured at LEP with an accuracy at the per mille level. Usually it is described in the Standard Model of electroweak interactions with account of quantum corrections. Alternatively, one may attempt different model-independent approaches in order to extract quantities like mass and width of the Z boson. If a fit deviates from that in the standard approach, this may give hint...
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ژورنال
عنوان ژورنال: The European Physical Journal C
سال: 2016
ISSN: 1434-6044,1434-6052
DOI: 10.1140/epjc/s10052-016-3919-x