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Phys. Rev. D 73, 055010 (2006) [19 pages]Anomalous gauge couplings of the Higgs boson at high energy photon colliders
Received 15 December 2005; published 22 March 2006
We study the sensitivity of testing the anomalous gauge couplings gHVV's of the Higgs boson in the formulation of linearly realized gauge symmetry via the processes gammagamma-->ZZ and gammagamma-->WWWW at polarized and unpolarized photon colliders based on e+e- linear colliders of c.m. energies 500 GeV, 1 TeV, and 3 TeV. Signals beyond the standard model (SM) and SM backgrounds are carefully studied. We propose certain kinematic cuts to suppress the standard model backgrounds. For an integrated luminosity of 1 ab-1, we show that (a) gammagamma-->ZZ can provide a test of gHgammagamma to the 3sigma sensitivity of O(10-310-2) TeV-1 at a 500 GeV ILC, and O(10-3) TeV-1 at a 1 TeV ILC and a 3 TeV CLIC, and (b) gammagamma-->WWWW at a 3 TeV CLIC can test all the anomalous couplings gHVV's to the 3sigma sensitivity of O(10-310-2) TeV-1. ©2006 The American Physical Society REFERENCES (31)
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