TY - JOUR
T1 - Probing Higgs self-coupling of a classically scale invariant model in e+e− → Zhh
T2 - Evaluation at physical point
AU - Fujitani, Y.
AU - Sumino, Y.
N1 - Funding Information:
The authors are grateful to H. Yokoya for useful advices for the simulation studies. The works of Y.F. and Y.S. are supported in part by Graduate Program on Physics for the Universe (GP-PU), Tohoku University , and by Grant-in-Aid for scientific research (No. 17K05404 ) from MEXT , Japan, respectively.
Publisher Copyright:
© 2018 The Authors
PY - 2018/4/10
Y1 - 2018/4/10
N2 - A classically scale invariant extension of the standard model predicts large anomalous Higgs self-interactions. We compute missing contributions in previous studies for probing the Higgs triple coupling of a minimal model using the process e+e−→Zhh. Employing a proper order counting, we compute the total and differential cross sections at the leading order, which incorporate the one-loop corrections between zero external momenta and their physical values. Discovery/exclusion potential of a future e+e− collider for this model is estimated. We also find a unique feature in the momentum dependence of the Higgs triple vertex for this class of models.
AB - A classically scale invariant extension of the standard model predicts large anomalous Higgs self-interactions. We compute missing contributions in previous studies for probing the Higgs triple coupling of a minimal model using the process e+e−→Zhh. Employing a proper order counting, we compute the total and differential cross sections at the leading order, which incorporate the one-loop corrections between zero external momenta and their physical values. Discovery/exclusion potential of a future e+e− collider for this model is estimated. We also find a unique feature in the momentum dependence of the Higgs triple vertex for this class of models.
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U2 - 10.1016/j.physletb.2018.01.067
DO - 10.1016/j.physletb.2018.01.067
M3 - Article
AN - SCOPUS:85044671524
SN - 0370-2693
VL - 779
SP - 46
EP - 51
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
ER -