Prospects for Yukawa unified SO(10) SUSY GUTs at the CERN LHC

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2008-10-01

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Baer, Howard
Kraml, Sabine
Sekmen, Sezen
Summy, Heaya

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The requirement of t-b-tau Yukawa coupling unification is common in simple grand unified models based on the gauge group SO( 10), and it also places a severe constraint on the expected spectrum of superpartners. For Yukawa-unified models with mu > 0, the spectrum is characterized by three mass scales: i). first and second generation scalars in the multi-TeV range, ii). third generation scalars, mu and m(A) in the few-TeV range and iii). gluinos in the similar to 350 - 500GeV range with chargino masses around 100 - 160GeV. In such a scenario, gluino pair production should occur at large rates at the CERN LHC, followed by gluino three-body decays into neutralinos or charginos. Discovery of Yukawa-unified SUSY at the LHC should hence be possible with only 1 fb(-1) of integrated luminosity, by tagging multi-jet events with 2-3 isolated leptons, without relying on missing E-T. A characteristic dilepton mass edge should easily be apparent above Standard Model background. Combining dileptons with b-jets, along with the gluino pair production cross section information, should allow for gluino and neutralino mass reconstruction. A secondary corroborative signal should be visible at higher integrated luminosity in the (chi) over tilde (+/-)(1)(chi) over tilde (0)(2) --> 3l channel, and should exhibit the same dilepton mass edge as in the gluino cascade decay signal.

Subject Keywords

Nuclear and High Energy Physics

URI

https://hdl.handle.net/11511/67560

Journal

JOURNAL OF HIGH ENERGY PHYSICS

DOI

https://doi.org/10.1088/1126-6708/2008/10/079

Collections

Department of Physics, Article

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Citation Formats

H. Baer, S. Kraml, S. Sekmen, and H. Summy, “Prospects for Yukawa unified SO(10) SUSY GUTs at the CERN LHC,” JOURNAL OF HIGH ENERGY PHYSICS, pp. 0–0, 2008, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/67560.