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By N.N. Bogoliubov

On the finish of 1960 we made plans to write down a monograph concerning the normal rules of quantum box idea and their experimental implications. We meant essentially to provide an account of the growth of the speculation of dispersion kinfolk because the visual appeal of the ebook of Bogolubov, Medvedev and Polivanov ([BMP]. As an advent we would have liked to incorporate a assessment of many of the ways to axiomatic box idea. This advent needed to hide not just the formula of Bogolubov, Medvedev and Polivanov, in response to the equipment of practical derivatives of the 5-matrix and the situation of microcausality, but in addition the sector formula linked to the names of Wightman, Haag, Lehmann, Symanzik, Zimmermann, and others. during the paintings the initiatives (and with them the dimensions) of the creation grew better and bigger, till it constructed into this booklet.

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This is illustrated in Fig. 9. The other advantage is that m eff can be linked to characteristic SUSY parameters like MSUSY , the mass of the highest colored object, MLSP , the LSP mass, and their mass difference ΔM; see Fig. 5. Typically m eff will m T ≡ 2E Tmiss pTl (1 − cos(Δφ)), where pTl is the transverse momentum of the lepton and Δφ the difference in the azimuthal angle between the lepton and the E Tmiss direction. The m T variable has an end-point for backgrounds containing a single leptonically decaying W boson, while signal events contain additional E Tmiss due to the LSPs, leading to an excess at large m T .

H 1 and h 2 , with M p = −1, couple quarks and leptons to their mirror partners but do not survive in the low-energy spectrum. The four-dimensional theory has the same content as the standard model at lowenergy, but with the two spin-0 doublets h 1 and h 2 making possible the gauge/BE-Higgs unification that is one of the most interesting features of supersymmetric theories. (75) for charged leptons and quarks together with their mirror and spin-0 partners, with √ √ √ m e = h e v1 / 2 , m d = h d v1 / 2 , m u = h u v2 / 2 .

LHC data, trigger and detector/object performance relevant for SUSY searches, are treated in Sect. 1. Commonly used discriminating variables for the design of the signal regions are then discussed in Sect. 2 and methods to estimate the remaining background in these signal regions are described in Sect. 3. Finally, the limit setting tools and SUSY models used for interpretations are briefly reviewed in Sects. 5, respectively. Fig. 5 Typical decay of a colored SUSY particle at LHC. The two cases shown at the bottom of the SUSY spectrum correspond to the two considered LSP types ferent decays are possible depending on the sparticle mass spectrum, generating long decay chains.

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