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The Electromagnetic Calorimeter of the CMS experiment at the LHC includes about 76000 lead tungstate (PbWO4) scintillating crystals. The detector properties must be continuously monitored in order to ensure the extreme stability and precision required. This leads to a very large volume of non-event data to be accessed continuously by shifters, experts, automatic monitoring tasks, detector configuration for trigger and data acquisition systems and offline data reconstruction programs. This paper describes the measurements taken by the Detector Control System, the calibrations, the data handling strategy and the workflow as well as the architecture of the configuration and conditions databases and the web interface to access the data. An overview is given on the experience with detector commissioning, which have allowed a system test in realistic run conditions. [ABSTRACT FROM AUTHOR]

The Large Hadron Collider forward (LHCf) experiment has performed measurements of the neutral particles emitted to the very forward region of proton-proton collisions at LHC. This experiment is designed to explore very forward interaction at very high energy, which is relevant to interpretation of the data from cosmic-ray experiments. LHCf detector is well optimized to measure photons in the multi-TeV energy range, and to reconstruct neutral pions with two photons. It can also measure neutrons. The data acquisitions at 0.9 TeV and 7 TeV were completed in 2010. In this paper, single photon energy spectra obtained at 0.9 TeV and transverse energy spectra of neutral pions obtained at 7 TeV will be presented. The results are compared with expectations by hadronic interaction models used for air-shower simulations. We found none of these models agree with the obtained data in the photon energy spectra, while EPOS shows a good agreement in the transverse energy spectra of neural pions. Impacts on cosmic-ray and QCD physics are also discussed. [ABSTRACT FROM AUTHOR]

ALICE (A Large Ion Collider Experiment) is the dedicated heavy-ion experiment at the LHC. In fall 2010, Pb-Pb collisions were recorded at a center-of-mass energy of 2.76 TeV per nucleon pair, about 14 times higher than the energy achieved in A-A collisions at RHIC. The study of the produced hot and dense matter with an unprecedented energy density allows the characterization of the quark-gluon plasma, the deconfined state of quarks and gluons, predicted by QCD. The study of in-medium partonic energy loss allows insights into the density of the medium and the energy-loss mechanisms. This paper presents results based on inclusive spectra as well as two and more-particle correlations of charged particles. These are well suited to assess in-medium effects, ranging from the suppression of particles (RAA) and away-side jets (IAA) at high pT to longrange phenomena attributed to collective effects like the ridge at low pT. The analysis is discussed and the results are presented in the context of earlier RHIC measurements where appropriate. [ABSTRACT FROM AUTHOR]

Double Chooz experiment will search for a disappearance of the reactor neutrinos from Chooz reactor cores in Ardenne, France, in order to detect the yet unknown neutrino oscillation angle θ13. The far detector was completed in 2010 and data-taking has started in spring 2011. Status of data-taking is presented and some performance plots from physics data are shown in this paper for the first time. Also the prospect of experimental sensitivity is presented, in light of recent indication from T2K for a non-zero θ13 value. [ABSTRACT FROM AUTHOR]

In this Sixth International School on Field Theory and Gravitation, I was invited to give this talk to the students and researchers of Field Theory mainly about LHC - The Large Hadron Collider and results. I will try to summarize the main daily life of the high energy physics and give an idea about the experiments and the expectations for the near future. I will comment the present results and the prospects to LHC/CMS. [ABSTRACT FROM AUTHOR]

The unprecedented center-of-mass energy available at the LHC offers unique opportunities for studying the properties of the strongly-interacting QCD matter created in PbPb collisions at extreme temperatures and very low parton momentum fractions. With its high precision, large acceptance for tracking and calorimetry, and a trigger scheme that allows analysis of each minimum bias PbPb event in the high-level trigger, CMS is fully equipped to study dimuon production in the high multiplicity environment of nucleus-nucleus collisions. Such probes are especially relevant for these studies since they are produced at early times and propagate through the medium, mapping its evolution. The capabilities of the CMS experiment to study dimuon production in pp and PbPb collisions based on LHC runs in 2010 and 2011 will be reviewed. In particular, CMS is able to measure prompt and non-prompt J/ψs, but also the first 3 γ states, differentially in pT and rapidity. In heavy ions, the observation of quarkonia at [formula] TeV will be presented, and the Z boson inclusive and differential measurement as probe of the initial state will be detailed. [ABSTRACT FROM AUTHOR]

Current attempts to understand supersymmetry (susy) breaking are focused on the idea that we are not in the ground state of the universe but, instead, in a metastable state that will ultimately decay to an exactly susy ground state. It is interesting to ask how experiments at the Large Hadron Collider (LHC) will shed light on the properties of this future supersymmetric universe. In particular we ask how we can determine whether this final state has the possibility of supporting atoms and molecules in a susy background. [ABSTRACT FROM AUTHOR]

We present the construction of a low energy effective theory for the TeV-scale super-symmetry breaking scenario, in which there is no Higgsino in the spectrum as a result of minimal construction which respects the symmetry breaking structure. Then we propose a new spin-2 resonance at a TeV scale, which can be introduced in a manifestly supersymmetric way by using an analogy of Hidden Local Symmetry. Possible signatures at the LHC experiments are discussed. This talk is based on the work done in Ref. [1]. [ABSTRACT FROM AUTHOR]

In the Relativistic Heavy Ion Collider era the high-pT particle emerging from hard scattering became an important tool of exploration of excited nuclear medium formed in ultra-relativistic heavy ion collisions. Discovery of anomalous suppression of high-pT particle yield [1] together with an observation of disappearance of back-to-back hadron correlation in central Au+Au collisions in 2002 [2] were the key results interpreted as a manifestation of the deconfined QCD medium in heavy ion collisions. Analysis of the high-pT particle and jet production is already a standard experimental technique providing a test bench for pQCD description of the point-like constituent scattering in p+p collisions and sensitive probes of the excited nuclear medium in A+A collisions. [ABSTRACT FROM AUTHOR]