Recent results of the searches for Supersymmetry in final states with one or two leptons at CMS are presented. Many Supersymmetry scenarios, including the Constrained Minimal Supersymmetric extension of the Standard Model (CMSSM), predict a substantial amount of events containing leptons, while the largest fraction of Standard Model background events -which are QCD interactions -gets strongly reduced by requiring isolated leptons. The analyzed data was taken in 2011 and corresponds to an integrated luminosity of approximately L = 1 fb −1 . The center-of-mass energy of the pp collisions was √ s = 7 TeV.

CMS is a general purpose experiment, designed to study the physics of pp collisions at 14 TeV at the Large Hadron Collider (LHC). It currently involves more than 2000 physicists from more than 150 institutes and 37 countries. The LHC will provide extraordinary opportunities for particle physics based on its unprecedented collision energy and luminosity when it begins operation in 2007.The principal aim of this report is to present the strategy of CMS to explore the rich physics programme offered by the LHC. This volume demonstrates the physics capability of the CMS experiment. The prime goals of CMS are to explore physics at the TeV scale and to study the mechanism of electroweak symmetry breaking-through the discovery of the Higgs particle or otherwise. To carry out this task, CMS must be prepared to search for new particles, such as the Higgs boson or supersymmetric partners of the Standard Model particles, from the start-up of the LHC since new physics at the TeV scale may manifest itself with modest data samples of the order of a few fb −1 or less. The analysis tools that have been developed are applied to study in great detail and with all the methodology of performing an analysis on CMS data specific benchmark processes upon which to gauge the performance of CMS. These processes cover several Higgs boson decay channels, the production and decay of new particles such as Z and supersymmetric particles, B s production and processes in heavy ion collisions. The simulation of these benchmark processes includes subtle effects such as possible detector miscalibration and misalignment. Besides these benchmark processes, the physics reach of CMS is studied for a large number of signatures arising in the Standard Model and also in theories beyond the Standard Model for integrated luminosities ranging from 1 fb −1 to 30 fb −1 . The Standard Model processes include QCD, B-physics, diffraction, detailed studies of the top quark properties, and electroweak physics topics such as the W and Z 0 boson properties. The production and decay of the Higgs particle is studied for many observable decays, and the precision with which the Higgs boson properties can be derived is determined. About ten different supersymmetry benchmark points are analysed using full simulation. The CMS discovery reach is evaluated in the SUSY parameter space covering a large variety of decay signatures.

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A y-ray spectraswpic study of the high spin states of the nucleus ' 5' Dy has been performed using the reaction '0RPd(dsCa,4n)'"Dy at a bombarding energy of 205 MeV. Gamma rays were detected using the TESSA) multi-detector array. A set of discrete-line States forming a rotational band has been observed in the data and has been shown to extend up to a spin of around 6Ofi and an excitation energy of about 30MeV. The y-ray energy data is consistent with dynamic moment of inertia P of (85 f 3)h2 MeV-', indicating a large quadrupole deformation. A measurement of the collectivity of the band has been made using the Doppler Shift attenuation method, with the data for the lower spin states yielding a qlladrupole moment of e,,= (J813)e b. This is in excellent agreement with the calculated value of 17.6 e b for a superdeformed shape with a major-to-minor axis ratio of 2 : l . The data for the dynamic moment of inertia are consistent with the calculated high-j configuration for the superdeformed band, and the variation of 9' ' ' with frequency is reproduced by both cranked Nilssan and Woods-Saxon models. The intensity pattern for the band indicates that the superdeformed states are populated with an anomalously high intensity at spins close to the fission limit, suggesting that there is some enhanced population mechanism. The hand is observed to de-excite suddenly at around I = 26h, although the linking transitions between these States and the yrast States have not been Observed. Evidence is presented for the existence of non-yrast superdeformed bands in the p r a y continuum.The intensity of these bands is measured and compared with the results of Monte Carlo simulations. NUCLEAR REACnONS "Pd("Ca,4n) E ("Ca) = 205 MeV; measured E,, I,, y-y coincidence and angular correlations. '''Dy; deduced levels, decays; assigned E,, J and n. Superdeformed band; quadrupole moment. *licmscopic structure, comparison with Nilssan and Woods-Saxon models. Feeding mechanisms. Comparison with results of Monte Carlo simulations.