TeV-scale string resonances at hadron colliders

Details TeV-scale string resonances at hadron colliders TeV-scale string resonances at hadron colliders

Jan 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005phrvd..71a6005b&link_type=abstract

Physical Review D, vol. 71, Issue 1, id. 016005

Other

27

Compactification And Four-Dimensional Models, Gravity In More Than Four Dimensions, Kaluza-Klein Theory, Unified Field Theories, Alternative Theories Of Gravity, Models Beyond The Standard Model

Scientific paper

We construct tree-level four-particle open-string amplitudes relevant to dilepton and diphoton production at hadron colliders. We expand the amplitudes into string resonance (SR) contributions and compare the total cross-section through the first SR with the Z' search at the Tevatron. We establish a current lower bound based on the CDF Run I results on the string scale to be about 1.1-2.1TeV, and it can be improved to about 1.5-3 TeV with 2fb-1. At the LHC, we investigate the properties of signals induced by string resonances in dilepton and diphoton processes. We demonstrate the unique aspects of SR-induced signals distinguishable from other new physics, such as the angular distributions and forward-backward asymmetry. A 95% C.L. lower bound can be reached at the LHC for MS>8.2-10TeV with an integrated luminosity of 300fb-1. We emphasize the generic features and profound implications of the amplitude construction.

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