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This is my contribution to the commemoration of my great friend Giuseppe ('Beppe') Nardulli who left us in June 2008. [ABSTRACT FROM AUTHOR]

This paper addresses the control optimization of a 4.5 K refrigerator used in the cryogenic system of the Large Hadron Collider (LHC) at CERN. First, the compressor station with the cold-box have been modeled and simulated under PROCOS (Process and Control Simulator), a simulation environment developed at CERN. Next, an appropriate parameter identification has been performed on the simulator to obtain a simplified model of the system in order to design an Internal Model Control (IMC) enhancing the regulation of the high pressure. Finally, a floating high pressure control is proposed using a cascade control to reduce operational costs. [ABSTRACT FROM AUTHOR]

The insertion regions located around the four interaction points of the Large Hadron Collider (LHC) are mainly composed of the low-β triplets, the separation dipoles and their respective electrical feed-boxes (DFBX). The low-β triplets are Nb-Ti superconductor quadrupole magnets, which operate at 215 T/m in superfluid helium at a temperature of 1.9 K. The commissioning and the first operation of these components have been performed. The thermo-mechanical behavior of the low-βtriplets and DFBX were studied. Cooling and control systems were tuned to optimize the cryogenic operation of the insertion regions. Hardware commissioning also permitted to test the system response. This paper summarizes the performance results and the lessons learned. [ABSTRACT FROM AUTHOR]

The superconducting magnets of the Large Hadron Collider (LHC) distributed over eight sectors of 3.3-km long are cooled at 1.9 K in pressurized superfluid helium. During the commissioning campaign of the sectors in 2008, cold standby periods at nominal operating temperature have allowed to measure the overall static heat inleaks reaching the magnet cold masses at 1.9 K by enthalpy balance in steady-state operation. In addition, during electrical powering of the different magnet circuits, helium II calorimetry based on precision thermometry has been implemented to assess with an accuracy of 100 mW/m the additional heat loads due to resistive heating and to detect possible abnormal heat dissipation during powering. This paper describes the method applied to perform these measurements, compares the results with the expected specified values and discusses the impact of the measured values on cryo-plant tuning and operational margins. [ABSTRACT FROM AUTHOR]

Fermilab is developing Nb3Sn quadrupole magnets for the planned upgrade of interaction regions of the Large Hadron Collider (LHC). Two distinctly different approaches have been employed, one using quadrupole-symmetric and one using dipole-symmetric collar laminations. This paper describes the design features of both collar types, collaring techniques for brittle Nb3Sn coils, and compares the advantages and disadvantages of the two approaches. Results of mechanical analysis for quadrupoles based on dipole-type and quadrupole-type collars are presented. Magnet construction issues and test results are reported. Test results include coil and component strain measurements during construction. Plans for the completion and test of the first dipole-symmetric assembly are described. [ABSTRACT FROM AUTHOR]

In this paper we study the charged particle and transverse energy production mechanism from AGS to LHC energies in the framework of nucleon and quark participants as well. A universal function which is a combination of logarithmic and power-law, describes the charged particle and transverse energy production both at nucleon and quark participant level quite well for the whole range of collision energies. We give the predictions for dNch/dη, dET/dη and the barometric observable, ET/Nch for Pb+Pb collisions at [formula]. [ABSTRACT FROM AUTHOR]

We present first results from the ATLAS Zero Degree Calorimeters (ZDC) based on 7 TeV pp collision data recorded in 2010. The ZDC coverage of ±∼350 μrad about the forward direction makes possible the measurement of neutral particles (primarily π0's and neutrons) over the kinematic region xF>=0.1 and out to pT<=1.2 GeV/c at large xF. The ATLAS ZDC is unique in that it provides a complete image of both electromagnetic and hadronic showers. This is illustrated with the reconstruction of π0's with energies of 0.7-3.5 TeV. We also discuss the waveform reconstruction algorithm which has allowed good time-of-flight resolution on leading neutrons emerging from the collisions despite the sparse (40 MHz) sampling of the calorimeter signals used. [ABSTRACT FROM AUTHOR]

The Large Hadron Collider (LHC) is presently undergoing beam commissioning in preparation for physics running in 2010 at a center of mass energy of 7 TeV. I will briefly describe the hadron physics capabilities of the ATLAS, CMS, and LHCb detectors, their performance with cosmic ray and early collision data, as well as their plans for physics with the first data. [ABSTRACT FROM AUTHOR]

We employ third family Yukawa unification, predicted by simple supersymmetric SO(10) models, to estimate the lightest MSSM Higgs boson mass. For μ > 0 (or μ < 0) and mt = 173.1GeV, the Higgs mass is estimated to lie close to 123-124 GeV. The theoretical uncertainty in this estimate is ±3 GeV. We highlight some LHC testable benchmark points which also display the presence of neutralino-stau coannihilation channel. [ABSTRACT FROM AUTHOR]

The helecity amplitudes of the subprocess gg → γγ via scalar unparticles intermediate states are calculated. The differential cross section is compared to that of the standard model. Phenomenological implications are also discussed. [ABSTRACT FROM AUTHOR]

This is an auspicious moment in experimental particle physics - there are large data samples at the Tevatron and a new energy regime being explored at the Large Hadron Collider with ever larger data samples. The coincidence of these two events suggests that we will soon be able to address the question: what lies beyond the standard model? Particle physics's current understanding of the universe is embodied in it. The model has been tested to extreme precision - better than a part in ten thousand - but we suspect that it is only an approximation, and that physics beyond this standard model will appear in the data of the Tevatron and LHC in the near future. This brief review touches on the status of searches for new physics at the time of the conference. [ABSTRACT FROM AUTHOR]

We calculate observables relevant for forward jets at LHC. The simulations are performed using Monte Carlo event generators. In particular we compare results from CASCADE based on high energy factorization and PYTHIA which is based on collinear factorization. [ABSTRACT FROM AUTHOR]

The role of multi Pomeron interactions in the formation of soft scattering unitarity models is summarized. GLMM predictions for LHC and beyond are presented and compared with other relevant models. [ABSTRACT FROM AUTHOR]

We confront soft Pomeron and gluon saturation models with the first LHC data on inclusive hadron production. We claim that while the first type of models are not able to describe some part of the LHC data, the Colour-Glass-Condensate (gluon saturation) approach gives an adequate description of the data. Here, we compare our published predictions with the recently available 7 TeV data. We firmly believe that if further experimental measurements confirm that the gluon saturation works, it will be a major discovery. [ABSTRACT FROM AUTHOR]

Improving our understanding and modeling of the underlying event in high energy collider environment is important for more precise measurements at the LHC. CDF Run II data for the underlying event associated with Drell-Yan lepton pair production and early ATLAS data measuring underlying event activity with respect to the leading transverse momentum track are presented. The data are compared with several QCD Monte Carlo models. It is seen that no current standard Monte Carlo tune adequately describes all the early ATLAS data and CDF data simultaneously. The underlying event observables presented here are particularly important for constraining the energy evolution of multiple parton interaction models. [ABSTRACT FROM AUTHOR]

ANTARES is an underwater detector located in the Mediterranean Sea, near the French city of Toulon, dedicated to the search for cosmic neutrinos. ANTARES is optimized to detect the Cherenkov signal from up-going relativistic particles, but could also observe massive exotic objects, such as magnetic monopoles and nuclearites. In this article we present a search strategy for nuclearites and determine the sensitivity to nuclearites of ANTARES detector in complete configuration, using a set of data taken in 2008. [ABSTRACT FROM AUTHOR]

In this contribution, the cross sections for the competing channels for the heavy quark production in heavy ion collisions at the LHC are compared and investigated in detail. [ABSTRACT FROM AUTHOR]

In this contribution we investigate the influence of nuclear effects in hadroproduction of quarkonium associated with a photon. At high energies, such processes provide a probe of the QCD dynamics as it is dependent on the nuclear gluon distribution, and could be usefull in constraining the behavior of the nuclear gluon distribution in proton-nucleus and nucleus-nucleus collisions. Here we study the influence of the shadowing effect, in the production of J/Ψ+γ at the LHC and estimate the pT dependence of the nuclear modification factors. The theoretical framework considered for J/Ψ+γ production is the non-relativistic QCD (NRQCD) factorization formalism. [ABSTRACT FROM AUTHOR]

In this work we investigate the influence of nuclear effects in the production of gluinos in nuclear collisions at the LHC, and estimate the transverse momentum dependence of the nuclear ratio RpA = d2σ(pA)dηdpT/Ad2σ(pp)dηdpT and RAA = d2σ(AA)dηdpT/A2d2σ(pp)dηdpT. We demonstrate that depending on the magnitude of the nuclear effects, the production of gluinos could be enhanced or supressed, compared to proton-proton collisions, which affect the detectability of gluinos in the pA and AA modes at the LHC. [ABSTRACT FROM AUTHOR]

A systematic measurement of the nuclear gluon distribution is of fundamental interest in understanding the parton structure of nuclei and to determine the initial conditions of the quark gluon plasma (QGP) predicted to be formed in central heavy ion collisions. At the moment the behavior of this distribution is completely undetermined by the fixed target experiments, with a possible improvement in the future electron-nucleus colliders. However, as the date of construction and start of operation of these colliders is still in debate, we need to obtain alternative searches to estimate the medium effects in the nuclear gluon distribution. An alternative is the study of the vector meson production in ultraperipheral heavy ion collisions at RHIC and LHC in order to constrain the nuclear medium effects present in the nuclear gluon distribution. In this contribution we present our main results for the J/Ψ photoproduction. [ABSTRACT FROM AUTHOR]

The Large Hadron Collider (LHC) now under commissioning at CERN is a 26.7 km collider based on several thousand high-field superconducting magnets, the majority of which operating in superfluid helium below 2 K and some isolated magnets operating in normal helium at 4.5 K. Four superconducting links (DSLs) of about 76 m in length and one of about 517 m in length, were designed, constructed and installed over a three year period. Their purpose is to transport current over long distances whenever underground LHC space constraints prevents to put power converters, current feed boxes and magnets in each others’ proximity. The four 76 m long DSLs transport current between current feed boxes and several of the isolated magnets, whereas the 517 m long DSL transports current between two current feed boxes. The links are comprised of cryogenic, vacuum-insulated, transfer lines housing one or more superconducting cables. The operating temperatures are about 5 K for the DSL part that houses the cable and about 60 K for the heat shield. Their commissioning and performance results at first operational experience in the beginning of 2008 are discussed. [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 context of a warped extra-dimension with Standard Model fields in the bulk, we obtain the general flavor structure of the couplings to fermions of both the Higgs scalar and the radion graviscalar. In the Flavor Anarchy paradigm, these couplings are generically misaligned with respect to the fermion mass matrix and moreover the off-diagonal couplings can be estimated parametrically as a function of fermion masses and the observed mixing angles. One can then study the flavor constraints and predictions arising from these couplings. [ABSTRACT FROM AUTHOR]

We review the recent noticeable progresses in black hole physics focusing on the up-coming super-collider, the LHC. We discuss the classical formation of black holes by particle collision, the greybody factors for higher dimensional rotating black holes, the deep implications of black hole physics to the ‘energy-distance’ relation, the security issues of the LHC associated with black hole formation and the newly developed Monte-Carlo generators for black hole events. [ABSTRACT FROM AUTHOR]

We have developed a new experimental setup based at the GANIL/SPIRAL facility in Caen, France to measure one-nucleon transfer reactions in inverse kinematics in order to study the evolution of the single particle structure of exotic nuclei. The setup couples together three state-of-the-art detection systems: the TIARA Si array, the large-acceptance magnetic spectrometer VAMOS and the high-efficiency segmented Ge γ-ray array EXOGAM. In a first experiment, the 24Ne(d,p)25Ne reaction has been studied to probe the N=16 shell closure. Details of the setup, data analysis and preliminary results are presented. © 2006 American Institute of Physics [ABSTRACT FROM AUTHOR]

The discovery of a neutral Higgs boson with large branching fractions into tau or muon pair final states would be a strong evidence of New Physics beyond the Standard Model. The discovery potential of these processes with the ATLAS detector at the Large Hadron Collider for integrated luminosities of 10 fb-1 and 30 fb-1 is presented. The studies are based on the analysis of fully simulated Monte Carlo samples. [ABSTRACT FROM AUTHOR]

The discovery of a charged Higgs boson would be definitive evidence of new physics beyond the Standard Model. The discovery potential of a MSSM charged Higgs boson with the ATLAS detector at the Large Hadron Collider is presented. The study is based on the analysis of signal and background simulated in detail through the experimental apparatus. [ABSTRACT FROM AUTHOR]