Showing papers in "Nuclear Physics in 2005"

TL;DR: In this paper, the most important experimental results from the first three years of nucleus-nucleus collision studies at RHIC were reviewed, with emphasis on results of the STAR experiment.

TL;DR: In this paper, the results of the PHENIX detector at the Relativistic Heavy Ion Collider (RHIC) were examined with an emphasis on implications for the formation of a new state of dense matter.

TL;DR: In this article, the main results obtained by the BRAHMS Collaboration on the properties of hot and dense hadronic and partonic matter produced in ultrarelativistic heavy ion collisions at RHIC are reviewed.

TL;DR: In the most central Au+Au collisions at the highest beam energy, evidence is found for the formation of a very high energy density system whose description in terms of simple hadronic degrees of freedom is inappropriate as discussed by the authors.

TL;DR: In this article, the authors proposed a composite Higgs in the framework of a five-dimensional AdS theory, where electroweak symmetry is broken dynamically via top loop effects, all flavour problems are solved, and contributions to electroweak precision observables are below experimental bounds.

TL;DR: In this article, the authors presented new recursion relations for tree amplitudes in gauge theory that give very compact formulas, in which all particles are on-shell and momentum conservation is preserved.

TL;DR: In this article, it was shown that an equilibrated but strongly coupled quark-gluon plasma has been made in such collisions and that its source is a color glass condensate.

TL;DR: For scalar box functions with at least one massless external leg, the authors showed that the coefficients can also be obtained from quadruple cuts, which are not useful in Minkowski signature.

TL;DR: In this article, the authors generalize various existing higher-loop Bethe ansatze for simple sec- tors of the integrable long-range dynamic spin chain describing planar N = 4 Super Yang-Mills Theory to the full psu(2,2|4) symmetry and, asymptotically, to arbitrary loop order.

TL;DR: In this article, the breaking of the chiral symmetry in QCD using a simple five-dimensional model was studied based on the AdS/CFT correspondence and the model gave definite predictions for the spectrum of vector mesons, their decay constants and interactions as a function of one parameter related to the quark condensate.

TL;DR: In this article, the effect of three-neutrino flavour oscillations on the decoupling process of neutrinos has been studied by solving the momentum-dependent kinetic equations for the neutrino spectra.

TL;DR: In this article, the authors explore some fundamental differences in the phenomenology, cosmology and model building of Split Supersymmetry compared with traditional low-scale supersymmetry.

TL;DR: The robust collective flow phenomena are well described by ideal hydrodynamics, with the equation of state (EoS) predicted by lattice simulations as discussed by the authors, but the transport properties turned out to be unexpected, with rescattering cross section one-to-two orders of magnitude larger than expected from perturbative QCD.

TL;DR: In this paper, a particularly symmetric model of neutrino mixings where, with good accuracy, the atmospheric mixing angle �23 is maximal, �13 = 0 and the solar angle satisfies sin 2 �12 = 1 (HPS) matrix is discussed.

TL;DR: In this paper, the two-nucleon system at N 3 LO was considered and the spectral function regularization for the multi-pion exchanges was employed to show that the three pion exchange contribution is negligibly small.

TL;DR: In this article, the anomalous dimensions of the quark-gluon vertex and quark, gluon and ghost fields are given for a general compact simple Lie group.

TL;DR: In this paper, the structure of soft supersymmetry breaking terms in KKLT models of flux compactification with low energy supersymmetric terms was examined and the modulus mediation is comparable to the anomaly mediation, yielding a quite distinctive sparticle spectrum.

TL;DR: In this paper, the complete electroweak O(α ) corrections have been calculated for the charged-current four-fermion production processes e + e − → ν τ τ + μ − ν ¯ μ, u d ¯ μ − ǫ c ¯, and u d¯ s c ¯.

TL;DR: In this article, the Higgs naturalness problem was investigated and the conditions for obtaining unification and dark matter were investigated, and the model recently proposed by Arkani-Hamed and Dimopoulos emerged as a very interesting option.

TL;DR: In this article, the leading correction to the shear viscosity in inverse powers of 't Hooft coupling using the α′-corrected low-energy effective action of type IIB string theory was derived.

TL;DR: The N = 1 effective action for generic type IIA Calabi-Yau orientifolds in the presence of background fluxes is computed from a Kaluza-Klein reduction as discussed by the authors.

TL;DR: In this paper, the authors compute the full three-loop coefficient functions for the structure functions F2 and FL in massless perturbative QCD and show that the expansion in powers of αs is very stable, for photon virtualities Q2≫1GeV2, over the full x-range accessible to fixed-target and collider measurements.

TL;DR: In this article, a symmetry principle was introduced to express lepton flavor violation in the charged lepton sector in terms of neutrino masses and mixing angles, and the dependence of the rates for flavor changing radiative lepton decays was explored.

TL;DR: In this article, the effective N = 1, D = 4 supergravity for the seven main moduli of type IIA orientifolds with D6 branes, compactified on T 6 /(Z2 × Z2) in the presence of general fluxes, was derived.

TL;DR: In this paper, a twistor string theory inspired formalism was proposed to calculate loop amplitudes in N = 4 super-Yang-Mills theory, where maximal helicity violating (MHV) tree amplitudes were used as vertices, using an off-shell prescription introduced by Cachazo, Svrcek and Witten.

TL;DR: In this article, two families of D1-D5-P states were considered and their gravity duals were found to cap off smoothly near r = 0, thus there are no horizons or closed timelike curves.

TL;DR: In this paper, a class of three-family Pati-salam models in a Z(6) Abelian symmetric orbifold with two discrete Wilson lines were constructed.

TL;DR: In this paper, the authors derived the couplings of the D-brane excitations to the bulk moduli of a compact Calabi-Yau orientifold and related the resulting Kahler geometry to the N = 1 special geometry of Lerche, Mayr and Warner.

TL;DR: In this paper, the authors count the number of bound states of BPS black holes on local Calabi-Yau three-folds involving a Riemann surface of genus g.