Short description.
Tau reconstruction is a challenging topic.
Main observables.
A_FB, tau polarisation, A_LR
People.
Daniel JeansPhysics Motivation: measure the coupling between Z and left handed tau, and the coupling between Z and right handed tau. This is going to be very useful to constrain some of the contact interactions, or to test models such as gaugeHiggs unification.
Search Channel: e+e → tau tau, tau → 1prong / 3prong, Ecm = 500 GeV.
Detector Benchmark: highly boosted tau reconstruction; in 3prong channel, interesting to test the limit of track separation; in 1prong channel, interesting to test PFA performance.
Main observables.
final observables: gL, gR, (for Ztautau couplings); cross section for e+e → tau_L tau_R / tau_R tau_L.
intermediate observables: efficiency of tau reconstruction, efficiency of tau decay mode identification, tau polarization
ILD note
ILDPHYSPUB2019004 can be found on the ILD notes page (and at arXiv:1912.08403 [hepex]).
Related figures used in the IDR
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People.
Daniel Jeans and Keita Yumino, reviewed by Mikael Berggren
References.
Daniel Jeans, “h>tau tau” [LCWS16, ILD0418]
S. Kawada et al., "A study of the measurement precision of the Higgs boson decaying into tau pairs at the ILC", https://arxiv.org/abs/1509.01885