Effects of TeV Scale Gravity on e^+e^- --> W^+ W^-

Details Effects of TeV Scale Gravity on e^+e^- --> W^+ W^- Effects of TeV Scale Gravity on e^+e^- --> W^+ W^-

2002-02-25

arxiv.org/abs/hep-ph/0202230v1

Phys.Lett. B534 (2002) 131-136

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages including figures

Scientific paper

10.1016/S0370-2693(02)01693-3

We study the process e^+e^- --> W^+W^- to probe low-scale gravity at high energy linear colliders. A characteristic signature of extra-dimensions models is the forward-backward asymmetry due to the interference of spin-2 graviton and spin-1 SM gauge boson exchange terms, even when right-polarised electron beam is used. Our analysis shows that larger than 5% asymmetry is possible at a linear collider with \sqrt{s}=500 (800) GeV if the mass scale, M_S is smaller than 2.7 (4.5) TeV. W^- polarisation factors measured with a few percent accuracy will also be able to put similar limits on M_S.

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