scholarly journals New features in the JHU generator framework: Constraining Higgs boson properties from on-shell and off-shell production

2020 ◽  
Vol 102 (5) ◽  
Author(s):  
Andrei V. Gritsan ◽  
Jeffrey Roskes ◽  
Ulascan Sarica ◽  
Markus Schulze ◽  
Meng Xiao ◽  
...  
Keyword(s):  
Higgs Boson ◽  
Shell Production

scholarly journals Constraints on the Higgs boson width from off-shell production and decay to Z-boson pairs

2014 ◽  
Vol 736 ◽  
pp. 64-85 ◽  
Author(s):  
V. Khachatryan ◽  
A.M. Sirunyan ◽  
A. Tumasyan ◽  
W. Adam ◽  
T. Bergauer ◽  
...  
Keyword(s):  
Higgs Boson ◽  
Z Boson ◽  
Shell Production

scholarly journals Measurements of the Higgs boson width and anomalous HVV couplings from on-shell and off-shell production in the four-lepton final state

2019 ◽  
Vol 99 (11) ◽  
Author(s):  
A. M. Sirunyan ◽  
A. Tumasyan ◽  
W. Adam ◽  
F. Ambrogi ◽  
E. Asilar ◽  
...  
Keyword(s):  
Higgs Boson ◽  
Final State ◽  
Shell Production

scholarly journals FURTHER STUDIES OF HIGGS PROPERTIES AT AN ILC γγ COLLIDER

2013 ◽  
Vol 28 (18) ◽  
pp. 1350085 ◽  
Author(s):  
XIAO-GANG HE ◽  
SIAO-FONG LI ◽  
HSIU-HSIEN LIN
Keyword(s):  
Angular Distribution ◽  
Higgs Boson ◽  
Standard Model ◽  
Decay Mode ◽  
Branching Ratio ◽  
Current Data ◽  
Decay Modes ◽  
The Standard Model ◽  
Shell Production

Recently the ATLAS and CMS experiments at the LHC have found a Higgs-like boson h with a mass around 125 GeV from several decay modes. The decay mode h →γγ is one of the most important modes in studying whether h is actually the Standard Model (SM) Higgs boson. Current data indicate that h→γγ has a branching ratio larger than the SM prediction for h being identified as the SM Higgs boson. To decide whether the h discovered at the LHC is the SM Higgs boson, more data are needed. We study how γγ collider can help to provide some of the most important information about the Higgs boson properties. We show that a γγ collider can easily verify whether the enhanced h →γγ observed at the LHC hold. Different models can be tested by studying Higgs boson decay to γZ. Studying angular distribution of the γγ through on-shell production of h and its subsequent decays into a γγ pair can decide whether the Higgs-like boson h at the LHC is a spin-0 or a spin-2 boson.

Higgs production through sterile neutrinos

2016 ◽  
Vol 31 (33) ◽  
pp. 1644007 ◽  
Author(s):  
Stefan Antusch ◽  
Eros Cazzato ◽  
Oliver Fischer
Keyword(s):  
Higgs Boson ◽  
Center Of Mass ◽  
Higgs Production ◽  
Electron Neutrino ◽  
Approximate Symmetry ◽  
Production Mechanism ◽  
Yukawa Couplings ◽  
Lepton Colliders ◽  
Shell Production ◽  
Resonant Contribution

In scenarios with sterile (right-handed) neutrinos with an approximate “lepton-number-like” symmetry, the heavy neutrinos (the mass eigenstates) can have masses around the electroweak scale and couple to the Higgs boson with, in principle, unsuppressed Yukawa couplings, while the smallness of the light neutrinos’ masses is guaranteed by the approximate symmetry. The on-shell production of the heavy neutrinos at lepton colliders, together with their subsequent decays into a light neutrino and a Higgs boson, constitutes a resonant contribution to the Higgs production mechanism. This resonant mono-Higgs production mechanism can contribute significantly to the mono-Higgs observables at future lepton colliders. A dedicated search for the heavy neutrinos in this channel exhibits sensitivities for the electron neutrino Yukawa coupling as small as [Formula: see text]. Furthermore, the sensitivity is enhanced for higher center-of-mass energies, when identical integrated luminosities are considered.

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