Extra-dimensional gravity and dijet production at gamma gamma colliders

Details Extra-dimensional gravity and dijet production at gamma gamma colliders Extra-dimensional gravity and dijet production at gamma gamma colliders

1999-10-14

arxiv.org/abs/hep-ph/9910346v1

Phys.Rev.D61:117701,2000

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, LaTex, 1 figure (postscript) included in submission

Scientific paper

10.1103/PhysRevD.61.117701

In this note, we consider dijet production at gamma gamma colliders as a probe of recently proposed, large extra-dimensional gravity models. The exchange of virtual, spin-2 graviton towers (Kaluza-Klein excitations) significantly modifies the cross section, as compared to the Standard Model predictions. We find that, in order to maximize the value of the effective scale that can be probed at a given center-of-mass energy, a very severe p_T cut should be applied; in general, a p_T equal to approximately 46% of the e^+ e^- beam energy gives the highest reach. We find that we can probe the effective mass scale from about 2.7 TeV to 11.1 TeV, depending on the center-of-mass energy and assumptions about the model.

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