Results are presented from searches for the standard model Higgs boson in proton-proton collisions at root s = 7 and 8 TeV in the Compact Muon Solenoid experiment at the LHC, using data samples corresponding to integrated luminosities of up to 5.1 fb(-1) at 7 TeV and 5.3 fb(-1) at 8 TeV. The search is performed in five decay modes: gamma gamma, ZZ, W+W-, tau(+)tau(-), and b (b) over bar. An excess of events is observed above the expected background, with a local significance of 5.0 standard deviations, at a mass near 125 GeV, signalling the production of a new particle. The expected significance for a standard model Higgs boson of that mass is 5.8 standard deviations. The excess is most significant in the two decay modes with the best mass resolution, gamma gamma and ZZ; a fit to these signals gives a mass of 125.3 +/- 0.4(stat.) +/- 0.5(syst.) GeV. The decay to two photons indicates that the new particle is a boson with spin different from one. (C) 2012 CERN. Published by Elsevier B.V. All rights reserved

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.

A mistake in the computer program performing the power law fit of the numerical computation of the hadron attenuation ratio R M has been detected. The mistake affects all fits which include the Xe nucleus. Below we present corrected results for table 2 and Figs. 8-10.Based on the corrected calculation we revise our conclusion in ref. [1]. The A 2/3 power law for 1 − R M in the absorption model remains also after including the Xe nucleus in the (c,α) fit.

The production of the J/ip meson by photons 1 was observed almost immediately after its discovery in hadronic 2 and electron-positron 3 collisions. The early measurements 1 " 4 focused on the extraction of the ^-nucleon total cross section with use of the vector dominance model. More recently, there have been several attempts to describe # photoproduction by means of constituent models such as photon-gluon fusion. 5 We have studied the production of ip mesons by photons up to the highest available energy, 300 GeV, incident on both liquid hydrogen and deuterium targets. In particular, we measure, in open geometry, the reactions y+(p or d) -ip (JU + M* °r e+e~) + X.(1)The Fermilab broad-band photon beam struck a 41-cm liquid target. Noninteracting photons traversed the detector, and deposited their energy in an integrating quantameter. Forward-going dilepton final states were detected in a multiparticle spectrometer, consisting of two analyzing mag-edited by T. Kirk and H.

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