Large extra dimensions and dijet production in $γγ$ collisions

Details Large extra dimensions and dijet production in $γγ$ collisions Large extra dimensions and dijet production in $γγ$ collisions

1999-09-30

arxiv.org/abs/hep-ph/9909567v1

JHEP 9911:004,1999

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, LaTeX, 1 postscript figure

Scientific paper

10.1088/1126-6708/1999/11/004

We have studied dijet production in $\gamma \gamma$ collisions with a view to probing the physics of large extra dimensions. The exchange of virtual spin-2 Kaluza-Klein excitations is found to modify the dijet cross-section substantially from its Standard Model value and allows the effective string scale to be probed to values between 2.5 and 6.4 TeV in the unpolarised case. In the case where the photons are polarised, the limits are seen to improve by roughly 20%. Dijet production in $\gamma \gamma$ collisions is thus shown to be a very effective probe of large extra dimensions.

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