Diphoton signals for low scale gravity in extra dimensions
Apr, 199914 pages
Published in:
- Phys.Rev.D 61 (2000) 015005
e-Print:
- hep-ph/9904266 [hep-ph]
PDG: Mass Limits on
Report number:
- UCD-HEP-99-8
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Abstract: (arXiv)
Gravity can become strong at the TeV scale in the theory of extra dimensions. An effective Lagrangian can be used to describe the gravitational interactions below a cut-off scale. In this work, we study the diphoton production in , , and collisions in the model of low scale gravity. Since in the standard model photon-photon scattering only occurs via box diagrams, the cross section is highly suppressed. Thus, photon-photon scattering opens an interesting opportunity for studying the new gravity interaction, which allows tree-level photon couplings. In addition, we also examine the diphoton production at hadronic and colliders. We derive the limits on the cut-off scale from the available diphoton data and also estimate the sensitivity reach in Run II at the Tevaton and at the future linear colliders.- photon photon: interaction
- anti-p p: interaction
- electron positron: interaction
- photon: pair production
- gravitation: effect
- space-time: higher-dimensional
- channel cross section: energy dependence
- differential cross section: angular dependence
- numerical calculations: interpretation of experiments
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