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Göttingen 2012 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 11: QCD (Theorie) 1

T 11.4: Vortrag

Dienstag, 28. Februar 2012, 17:30–17:45, VG 3.103

Jets in LHC SearchesChristoph Englert1,2, Erik Gerwick3,4, Tilman Plehn1, •Peter Schichtel1, and Steffen Schumann1,31Institut für Theoretische Physik, Universität Heidelberg, Germany — 2Institute for Particle Physics Phenomenology, Department of Physics, Durham University, United Kingdom — 3II. Physikalisches Institut, Universität Göttingen, Germany — 4SUPA, School of Physics & Astronomy, The University of Edinburgh, Scotland

Jets with missing energy is a striking signature for new physics at the LHC. It confronts us with large Standard Model backgrounds like Z/W+jets and QCD jet. We can describe these backgrounds in terms of staircase scaling of the exclusive number of jets. The theoretical errors for this scaling are well under control. We can furthermore test staircase scaling and its relation to Poisson scaling in photon plus jets production. In inclusive new physics analyses the effective mass yields complementary information. We use a log-likelihood analysis for SUSY benchmark points to show the power of our approach.

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