“…In addition a short presentation of the recent data on the heavy quark content of the photon is given. Related topics - the polarized (spin dependent) structure functions for the real and virtual photon, the structure function of the electron and the photonic content of the proton are also shortly mentioned.…”
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“…The physics includes signals which probe QGP (Quark-Gluon Plasma), namely the $\phi$, J/$\psi$ and $\psi^\prime$ vector mesons and thermal dimuons, and reference signals, namely the (unseparated) $\rho$ and $\omega$ mesons, and Drell-Yan dimuons. …”
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“…The purpose of the experiment is to study the isospin symmetry in the light quark sea of the proton. Its violation is one possible explanation of recent unexpected muon deep inelastic scattering experimental results which disagree with the Gottfried sum rule. \\ \\ The experiment makes use of the large acceptance muon spectrometer used previously by NA10 and NA38. …”
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“…V/sub cb/ is obtained by using Heavy Quark Effective Theory calculations for F(1). The semi-leptonic branching ratio BR(b to cl nu ) is also used to extract V/sub cb/. …”
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“…Should Einstein's general relativity be quantized in the usual way even though it is not renormalizable the way the spin 1/2 lepto-quark - spin 1 gauge force boson local field theories are? …”
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“…This note describes a study of the detection of single electroweak t-quark production using the CMS detector at the LHC. …”
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“…In the opposite hemisphere the data exhibit several features predicted by hard scattering quark- parton models: coplanarity and short-range rapidity correlation for the large transverse momentum secondaries as well as a transverse momentum sharing distribution similar to that observed in deep inelastic electro-production and in e/sup +/e/sup -/ collisions. (18 refs).…”
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“…It will provide nuclear collisions at a center-of- mass energy 30 times higher then the present Relativistic Heavy Ion Collider, opening a new era for this field, in which particle production will be dominated by hard processes, and the energy densities will possibly be high enough to treat the generated quark- gluon plasma as an ideal gas. While RHIC is providing a wealth of interesting data, many physicists are working hard to prepare the experiments which will run at the LHC. …”
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“…The most challenging measurements of the Higgs boson properties is the determination of the Yukawa coupling to the top quark. To complement the $\ttbar H\rightarrow \ttbar\bb$ channel, which is the most significant in the low Higgs mass region ($m_H\sim 120$~GeV), we introduce a feasibility study of the $\ttbar H$ channel with the Higgs decaying to a pair of $\tau$ leptons. …”
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“…Given the big cross section for \ttbar production in proton-proton collisions at 14\TeV, the LHC with its high luminosity will be, among others,a top factory, allowing a precision measurement of the top quark mass. Based on a detailed simulation of the CMS detector, the following top mass reconstruction accuracies are possible in the respective final states with the present knowledge of experimental and theoretical uncertainties. …”
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“…One of the most troublesome contributions to the NNLO QCD corrections to B -> X_s gamma originates from three-loop matrix elements of four-quark operators. A part of this contribution that is proportional to the QCD beta-function coefficient beta_0 was found in 2003 as an expansion in m_c/m_b. …”
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“…We then consider neutralino pair annihilation into quark-antiquark pairs that dominates wide ranges of the mSUGRA parameter space. …”
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“…The characterisation of the Quark-Gluon Plasma produced in ultra-relativistic heavy-ion colli- sions is the main goal of the ALICE experiment at the CERN LHC. …”
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“…Jet quenching is one of the established signatures of the Quark Gluon Plasma, and this phenomenon has been studied extensively in high energy heavy ion experiments over the last decade. …”
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“…The ALICE experiment at the CERN LHC is designed to study the physics of strongly interacting matter, and in particular the properties of the Quark-Gluon Plasma, using proton-proton, proton-nucleus and nucleus-nucleus collisions. …”
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“…The long term plan of ALICE (A Large Ion Collider Experiment) at the CERN Large Hadron Collider (LHC) is a detailed investigation and characterisation of the Quark-Gluon Plasma (QGP). ALICE has devised a comprehensive upgrade strategy to enhance its physics capabilities and to exploit the LHC running conditions after the second long shutdown of the LHC scheduled in 2019-20. …”
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“…Measurements presented, when representing potential backgrounds, will also be useful to studies of top quark and Higgs production, as well as new physics searches that deal with similar backgrounds.…”
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“…The first observation of resolved $\chi_{b1}(3P)$ and $\chi_{b2}(3P)$ peaks and the measurement of their masses through their decays to $\Upsilon(3S)\gamma$ is also reported.For the ATLAS collaboration, recent results in measurements of pair b-quark production and the measurement of quarkonium production in $pp$ collisions at $5.02$ TeV are reviewed. …”
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“…There are two prominent experimental signatures of quark–gluon plasma creation in ultra-relativistic heavy-ion collisions: the jet quenching phenomenon and the azimuthal-momentum space-anisotropy of final-state particle emission. …”
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“…Possible phase transition of strongly interacting matter from hadron to a quark-gluon plasmastate have in the past received considerable interest. …”
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