Toward High Precision Higgs-Boson Measurements at the International Linear e + e − Collider
/ Authors
S. Heinemeyer, S. Kanemura, H. Logan, A. Raspereza, T. Tait, H. Baer, Edmond L. Berger, A. Birkedal, J. Brient, M. Carena
and 24 more authors
J. Cembranos, S. Choi, S. Godfrey, J. Gunion, H. Haber, Tao Han, H. Heath, S. Hesselbach, J. Kalinowski, W. Kilian, G. Moortgat-Pick, S. Moretti, S. Mrenna, M. Mühlleitner, F. Petriello, J. Reuter, M. Ronan, P. Skands, A. Sopczak, M. Spira, Z. Sullivan, C. Wagner, G. Weiglein, P. Zerwas
/ Abstract
This report reviews the properties of Higgs bosons in the Standard Model (SM) and its various extensions. We give an extensive overview of the potential of the ILC operated at center-ofmass energies up to 1 TeV (including the γγ collider option) for the determination of the Higgs boson properties. This includes the measurement of the Higgs boson mass, its couplings to SM fermions and gauge bosons, and the determination of the spin and the CP quantum numbers of the Higgs. We also discuss extensions of the SM, including heavy SM-like Higgs bosons, heavy Higgs bosons in the framework of Supersymmetry (SUSY) and more exotic scenarios. We review recent theoretical developments in the field of Higgs boson physics, and the impact of Higgs boson physics on cosmology in several SUSY frameworks is considered. The important questions as to what the ILC can contribute to Higgs boson physics after the LHC, the LHC/ILC interplay and synergy, are addressed. The impact of the accelerator and detector performance on the precision of measurements are discussed in detail and we propose a strategy to optimize future analyses. Open questions arising for the various topics are listed, and further topics of study and corresponding roadmaps are suggested.