Karlsruhe 2011 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 17: Beyond the Standard Model (Theorie) II

T 17.5: Vortrag

Mittwoch, 30. März 2011, 17:45–18:00, 30.23: 6-1

Gluino Pair Production at the LHC: The Threshold — •Matthias Kauth, Johann H. Kühn, Matthias Steinhauser, and Peter Marquard — Institut für Theoretische Teilchenphysik, KIT

The next-to-leading order analysis for the cross section for hadronic production of gluino pairs close to threshold is presented. Within the framework of non-relativistic QCD a significant enhancement compared to fixed order perturbation theory is observed which originates from the characteristic remnant of the 1S peak below the nominal pair threshold. The analysis includes all colour configurations of S-wave gluino pairs, i.e. singlet, symmetric and antisymmetric octet, decuplet and 27 representation. Matching coefficients involving real and virtual radiation are separately evaluated for all colour and spin configurations and initial states. We concentrate on the case of gluino decay rates comparable to the gluino binding energy. The non-relativistic dynamics of the gluino pair is solved by calculating the Green’s function in NLO. Numerical results for the Large Hadron Collider at √s=14 TeV and 7 TeV are presented.