The Standard Model Higgs in $γγ$ Collisions

Details The Standard Model Higgs in $γγ$ Collisions The Standard Model Higgs in $γγ$ Collisions

2000-12-15

arxiv.org/abs/hep-ph/0012195v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

contribution to LCWS2000 at Fermilab

Scientific paper

10.1063/1.1394330

For a Higgs boson below the $W^\pm$ threshold, the $\gamma \gamma$ collider option of a future linear $e^+ e^-$ machine is compelling. In this case one can measure the ``gold-plated'' loop induced $\Gamma (H \longrightarrow \gamma \gamma)$ partial width to high precision, testing various extensions of the Standard Model. With recent progress in the expected $\gamma \gamma$ luminosity at TESLA, we find that for a Higgs of 115 GeV a statistical accuracy of the two photon partial width of 1.4 % is possible. The total width depends thus solely on the accuracy of $BR(H \longrightarrow \gamma \gamma)$ and is of ${\cal O} (10 %)$.

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