Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1999-05-11
Phys.Rev. D60 (1999) 115017
Physics
High Energy Physics
High Energy Physics - Phenomenology
Typos corrected and updated references, Rev-Tex, 11 pages with one figure
Scientific paper
10.1103/PhysRevD.60.115017
We show that new physics effects due to extra dimensions can dramatically affect Higgs pair production at photon colliders. We find that the cross section due to extra dimensions with the scale $M_S$ of new physics around 1.5 TeV, the cross section can be as large as 0.11 pb (1.5pb) for monochromatic photon collision, $\gamma \gamma \to HH$, with the collider energy $\sqrt{s} = 0.5 (1)$ TeV for Higgs mass of 100 (350) GeV. The cross section can be 3 fb (2.7 fb) for the same parameters for collisions using photon beams from electron or positron back scattered by laser. These cross sections are much larger than those predicted in the Standard Model. Higgs pair production at photon colliders can provide useful tests for new physics due to extra dimensions.
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