Higgs Self-Coupling in gamma-gamma Collisions

Abstract

To establish the Higgs mechanism experimentally, one has to determine the Higgs self-interaction potential responsible for the electroweak symmetry breaking. This requires a measurement of the trilinear and quadrilinear self-couplings of the Higgs particle, as predicted by the Standard Model (SM). We propose to measure the trilinear Higgs self-coupling in gamma-gamma collisions just above the kinematic threshold E_thr = 2M_H, where M_H is the Higgs mass. Our calculation reveals that the sensitivity of the cross-section sigma(gamma gamma -> HH) to the Higgs self-coupling is maximal near the 2M_H threshold for M_H = 115-150 GeV, and is larger than the sensitivities of sigma(e+e- -> ZHH) and sigma(e+e- -> nu nu HH) to this coupling for 2E_e < 700 GeV. We envisage to (a) study gamma gamma -> H by constructing an X-band e-e- linac and a terawatt laser system in order to produce Compton-scattered gamma-ray beams for a 160-GeV photon collider (2E_e = 200 GeV); (b) add a positron source and repeat all measurements done at LEP and SLC with much better precision; and (c) subsequently install 70-MeV/m rf cavities in order to study e+e- -> H+Z, e+e- -> tt and gamma gamma -> H+H at 2E_e = 350 GeV. The total length of the linac would be about 7 km.

14 pages, 5 figures, LaTeX. Submitted to Phys. Rev. D

References in corpus (12)

• Towards High-Precision Predictions for the MSSM Higgs Sector
• ANALYTICAL EXPRESSIONS FOR RADIATIVELY CORRECTED HIGGS MASSES AND COUPLINGS IN THE MSSM
• Effective potential methods and the Higgs mass spectrum in the MSSM
• CompHEP - a package for evaluation of Feynman diagrams and integration over multi-particle phase space. User's manual for version 33
• New Physics Effect on the Higgs Self-Coupling
• Examining the Higgs boson potential at lepton and hadron colliders: a comparative analysis
• Higgs decays in the Two Higgs Doublet Model: Large quantum effects in the decoupling regime
• Full order alpha electroweak corrections to double Higgs-strahlung at the linear collider
• Final results from DELPHI on the searches for SM and MSSM Neutral Higgs bosons
• Higgs self coupling measurement in e+e- collisions at center-of-mass energy of 500 GeV
• Can the trilinear Higgs self-coupling be measured at future linear colliders?
• Critical Issues in Linear Colliders

Cited by in corpus (27)

• The Anatomy of Electro-Weak Symmetry Breaking. I: The Higgs boson in the Standard Model
• Physics at the e+ e- Linear Collider
• A Model of TeV Scale Physics for Neutrino Mass, Dark Matter and Baryon Asymmetry and its Phenomenology
• Multi-Higgs boson production in the Standard Model and beyond
• Higgs boson pair production in new physics models at hadron, lepton, and photon colliders
• gamma-UPC: Automated generation of exclusive photon-photon processes in ultraperipheral proton and nuclear collisions with varying form factors
• Higgs boson pair production at a photon-photon collision in the two Higgs doublet model
• Effects of the anomalous Higgs couplings on the Higgs boson production at the Large Hadron Collider
• Pair Production of Two-Higgs-Doublet_Model Light Higgs Bosons in $\gamma \gamma$ Collisions
• Neutral Higgs boson pair production in photon-photon annihilation in the Two Higgs Doublet Model
• Single Higgs-boson production through gamma-gamma scattering within the general 2HDM
• A feasibility study of the measurement of Higgs pair creation at a Photon Linear Collider
• Testing electroweak scale seesaw models at $e^{-}\gamma$ and $\gamma \gamma$ colliders
• Measuring the Higgs Boson Self-coupling at High Energy e^+e^- Colliders
• Non-decoupling effects in supersymmetric Higgs sectors
• Discovery potential of Higgs boson pair production through 4$\ell$+$E/$ final states at a 100 TeV collider
• XCC: An X-ray FEL-based $\gamma \gamma$ Compton Collider Higgs Factory
• Introduction to the Photon Collider
• Testing Higgs Physics at the Photon Collider
• Composite Higgs revealed in Higgs pair photo-production at future colliders
• Higgs Boson Self-Coupling at High Energy $\gamma \gamma$ Collider
• An SLC-type $e^{+}{e}^{-}/\gamma \gamma$ facility at a Future Circular Collider
• Two-photon physics at future electron-positron colliders
• Imaginary part of the zero angle light-by-light scattering tensor
• Ultimate parameters of the photon collider at the ILC
• Di-Higgs production ($\gamma \gamma \to hh$) in Composite Models
• Introduction to Photon 2007