Measuring the Beam Polarizations and the Luminosity at Photon-Photon Colliders

Abstract

We present methods to measure the beam polarizations and the luminosity of $\gamma \gamma$ colliders at TeV energy scale. The beam polarizations of a $\gamma \gamma$ collider can easily be monitored by comparing the numbers of events of the processes $\gamma \gamma$ $\to$ ${\ell }^{+}{\ell }^{-}$ and $\gamma \gamma$ $\to$ $W^{+}{W}^{-}$, where $\ell$ means $e$ or $\mu$. The luminosity of a $\gamma \gamma$ collider is also measurable by the event rate of $W$ boson pair productions and the light lepton pair productions.

16 pages and 7 figures attached as PostScript files, LaTeX, HUPD-9217 (Revised for 4 points: 2 are important, see the top of the file for details.)

Cited by in corpus (9)

• TESLA Technical Design Report, Part VI, Chapter 1: The Photon Collider at TESLA
• An Interaction Region for Gamma-Gamma and Gamma-Electron Collisions at TESLA/SBLC
• The Littlest Higgs boson at a photon collider
• Electroweak O(alpha) Corrections to W+W- Pair Production in Polarized gamma-gamma Collisions
• Measuring the two-photon decay width of Intermediate-mass Higgs at a photon-photon collider
• Measurement of gamma-gamma and gamma-electron luminosities at photon colliders
• Higgs, SUSY and the Standard Model at $\gamma \gamma$ Colliders
• Pair production of the lightest chargino at $\gamma \gamma$-collider
• eeγproduction at photon-photon colliders at complete electroweak NLO accuracy