Ebook theory and phenomenology of sparticles an account of four dimensional n 1 supersymmetry in high ener you can look with digital edition or print. This is one of the digital editions of theory and phenomenology of sparticles an account of four dimensional n 1 supersymmetry in high ener you can find this on the internet.

An accord specifying a unique set of conventions for supersymmetric extensions of the Standard Model together with generic file structures for 1) supersymmetric model specifications and input parameters, 2) electroweak scale supersymmetric mass and coupling spectra, and 3) decay tables is presented, to provide a universal interface between spectrum calculation programs, decay packages, and high energy physics event generators. 1 skands@fnal.gov. See home.fnal.gov/∼skands/slha/ for updates and examples.

Physics at the Large Hadron Collider (LHC) and the International e + e − Linear Collider (ILC) will be complementary in many respects, as has been demonstrated at previous generations of hadron and lepton colliders. This report addresses the possible interplay between the LHC and ILC in testing the Standard Model and in discovering and determining the origin of new physics. Mutual benefits for the physics programme at both machines can occur both at the level of a combined interpretation of Hadron Collider and Linear Collider data and at the level of combined analyses of the data, where results obtained at one machine can directly influence the way analyses are carried out at the other machine. Topics under study comprise the physics of weak and strong electroweak symmetry breaking, supersymmetric models, new gauge theories, models with extra dimensions, and electroweak and QCD precision physics. The status of the work that has been carried out within the LHC / LC Study Group so far is summarised in this report. Possible topics for future studies are outlined.4

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We describe the physics potential of e + e − linear colliders in this report. These machines are planned to operate in the first phase at a center-of-mass energy of 500 GeV, before being scaled up to about 1 TeV. In the second phase of the operation, a final energy of about 2 TeV is expected. The machines will allow us to perform precision tests of the heavy particles in the Standard Model, the top quark and the electroweak bosons. They are ideal facilities for exploring the properties of Higgs particles, in particular in the intermediate mass range. New vector bosons and novel matter particles in extended gauge theories can be searched for and studied thoroughly. The machines provide unique opportunities for the discovery of particles in supersymmetric extensions of the Standard Model, the spectrum of Higgs particles, the supersymmetric partners of the electroweak gauge and Higgs bosons, and of the matter particles. High precision analyses of their properties and interactions will allow for extrapolations to energy scales close to the Planck scale where gravity becomes significant. In alternative scenarios, like compositeness models, novel matter particles and interactions can be discovered and investigated in the energy range above the existing colliders up to the TeV scale. Whatever scenario is realized in Nature, the discovery potential of e + e − linear colliders and the high-precision with which the properties of particles and their interactions can be analysed, define an exciting physics programme complementary to hadron machines.

The physics programme and the design are described of a new collider for particle and nuclear physics, the Large Hadron Electron Collider (LHeC), in which a newly built electron beam of 60 GeV, to possibly 140 GeV, energy collides with the intense hadron beams of the LHC. Compared to the first ep collider, HERA, the kinematic range covered is extended by a factor of twenty in the negative four-momentum squared, Q 2 , and in the inverse Bjorken x, while with the design luminosity of 10 33 cm −2 s −1 the LHeC is projected to exceed the integrated HERA luminosity by two orders of magnitude. The physics programme is devoted to an exploration of the energy frontier, complementing the LHC and its discovery potential for physics beyond the Standard Model with high precision deep inelastic scattering measurements. These are designed to investigate a variety of fundamental questions in strong and electroweak interactions. The LHeC thus continues the path of deep inelastic scattering (DIS) into unknown areas of physics and kinematics. The physics programme also includes electron-deuteron and electron-ion scattering in a (Q 2 1/x) range extended by four orders of magnitude as compared to previous lepton-nucleus DIS experiments for novel investigations of neutron's and nuclear structure, the initial conditions of Quark-Gluon Plasma formation and further quantum chromodynamic phenomena. The LHeC may be realised either as a ring-ring or as a linac-ring collider. Optics and beam dynamics studies are presented for both versions, along with technical design considerations on the interaction region, magnets including new dipole prototypes, cryogenics, RF, and further components. A design study is also presented of a detector suitable to perform high precision DIS measurements in a wide range of acceptance using state-ofthe art detector technology, which is modular and of limited size enabling its fast installation. The detector includes tagging devices for electron, photon, proton and neutron detection near to the beam pipe. Civil engineering and installation studies are presented for the accelerator and the detector. The LHeC can be built within a decade and thus be operated while the LHC runs in its high-luminosity phase. It so represents a major opportunity for progress in particle physics exploiting the investment made in the LHC.

The Large Hadron–Electron Collider (LHeC) is designed to move the field of deep inelastic scattering (DIS) to the energy and intensity frontier of particle physics. Exploiting energy-recovery technology, it collides a novel, intense electron beam with a proton or ion beam from the High-Luminosity Large Hadron Collider (HL-LHC). The accelerator and interaction region are designed for concurrent electron–proton and proton–proton operations. This report represents an update to the LHeC’s conceptual design report (CDR), published in 2012. It comprises new results on the parton structure of the proton and heavier nuclei, QCD dynamics, and electroweak and top-quark physics. It is shown how the LHeC will open a new chapter of nuclear particle physics by extending the accessible kinematic range of lepton–nucleus scattering by several orders of magnitude. Due to its enhanced luminosity and large energy and the cleanliness of the final hadronic states, the LHeC has a strong Higgs physics programme and its own discovery potential for new physics. Building on the 2012 CDR, this report contains a detailed updated design for the energy-recovery electron linac (ERL), including a new lattice, magnet and superconducting radio-frequency technology, and further components. Challenges of energy recovery are described, and the lower-energy, high-current, three-turn ERL facility, PERLE at Orsay, is presented, which uses the LHeC characteristics serving as a development facility for the design and operation of the LHeC. An updated detector design is presented corresponding to the acceptance, resolution, and calibration goals that arise from the Higgs and parton-density-function physics programmes. This paper also presents novel results for the Future Circular Collider in electron–hadron (FCC-eh) mode, which utilises the same ERL technology to further extend the reach of DIS to even higher centre-of-mass energies.

In this Brief Report we investigate the production of charged heavy particles via y y fusion at high energy pp colliders. We revise previous claims that the y y cross section is comparable to or larger than that for the corresponding Drell-Yan process at high energies. Indeed we find that the y y contribution to the total production cross section at pp is far below the Drell-Yan cross section. As far as the individual elastic, semielastic, and inelastic contributions to the y y process are concerned we find that they are all of the same order of magnitude.PACS numberk): 13.85. Qk, 14.60.Hi, 14.80.Cp, 14.80.L~The detection of a fundamental charged scalar particle would certainly lead beyond the realm of the standard model (SM). These particles can arise either in the context of supersymmetric models, as superpartners of quarks and leptons [I], or in extended Higgs sectors, e.g., in two-Higgs-doublet models [2] (with or without supersymmetry) or in models with Higgs triplets [3]. In general, the different charged scalars will have different interactions at the tree level. For instance, sleptons do not couple to quarks in contrast with H* in the two-Higgsdoublet model, while one charged Higgs boson in triplet models does not couple to matter at all but has an unconventional H + W-2' vertex. Hence a model-independent production mechanism is welcome. Such a modelindependent interaction is clearly given by the scalar QED part of the underlying theory. For example, the y y fusion processes y y -+~+~-, T + T -,are uniquely calculable for given mass of the produced particles. At pp colliders we also have, however, the possibility of qZj annihilation Drell-Yan processes: q q +~+~-, T + i --, . . . . (2)There has been a claim in the literature that the y y fusion exceeds the Drell-Yan (DY) cross sections at pp by orders of magnitude [4]. This would create the interesting possibility of producing charged heavy scalars at hadronic colliders or, for that mater, any charged particle which does not have strong interactions.Apart from the charged scalars mentioned above there exist various candidates for charged fermions. These fer-mions can be either fourth generation leptons, charginos, or exotic leptons in extended gauge theories such as E, [5]. Current limits on the masses of all exotic charged particles which couple to the Z with full strength are -Mz/2. In the case of H* there exist additional constraints (clearly model dependent) from the experimental studies of the b +s y decay. In one variation of the model, mH* < 110 GeV is ruled out for large values of tar@ and for m,=150 GeV [6]. However, in the two-Higgsdoublet models with supersymmetry (SUSY) these constraints are much weaker [7]. (The same analysis also shows that there are no limits on the chargino masses from the b +s y rate.) The calculation for y y + L +Lat pp colliders has been done recently [8]. The result in [8] is that the y y cross section is comparable to the correyonding Drell-Yan process at high energies, e.g., at d s =40 TeV for m~ -100 GeV. At energie...