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SUMMARY:Testing Gaugino Mass Unification Directly at the LHC - Brent Nelso
 n [Northeastern]
DTSTART:20091111T141500Z
DTEND:20091111T153000Z
UID:TALK19617@talks.cam.ac.uk
CONTACT:Claude Warnick
DESCRIPTION:We begin a systematic study of how gaugino mass unification ca
 n be probed at the CERN Large Hadron Collider (LHC) in a quasi-model indep
 endent manner. As a first step in that direction we focus our attention on
  the theoretically well-motivated mirage pattern of gaugino masses\, a one
 -parameter family of models of which universal (high scale) gaugino masses
  are a limiting case. We improve on previous methods to define an analytic
  expression for the metric on signature space and use it to study one-para
 meter deviations from universality in the gaugino sector\, randomizing ove
 r other soft supersymmetry-breaking parameters. We put forward three ensem
 bles of observables targeted at the physics of the gaugino sector\, allowi
 ng for a determination of this non-universality parameter without reconstr
 ucting individual mass eigenvalues or the soft supersymmetry-breaking gaug
 ino masses themselves. In this controlled environment we find that approxi
 mately 80% of the supersymmetric parameter space would give rise to a mode
 l for which our method will detect non-universality in the gaugino mass se
 ctor at the 10% level with an integrated luminosity of order 10 inverse fe
 mptobarns. We discuss strategies for improving the method and for adding m
 ore realism in dealing with the actual experimental circumstances of the L
 HC.
LOCATION:MR3\, Centre for Mathematical Sciences
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