Showing papers in "Physics Letters B in 2000"

TL;DR: In this article, the authors propose a mechanism by which four-dimensional Newtonian gravity emerges on a 3-brane in 5D Minkowski space with an infinite size extra dimension.

TL;DR: In this article, the authors considered the cosmology of a 3-brane universe with a cosmological constant and showed that the Friedmann equation admits a first integral, analogous to the first Friedmann equations, which governs the evolution of the metric in the brane.

TL;DR: In this paper, it was shown that if the fermion mass is larger than half the curvature of the compact dimension, the zero mode can be localized on the hidden 3-brane in the Randall-Sundrum model.

TL;DR: In this article, the Bardeen model is interpreted as the gravitational field of a nonlinear magnetic monopole, i.e., as a magnetic solution to Einstein equations coupled to a non-linear electrodynamics.

TL;DR: In this article, the authors show how turning on Flux for RR (and NS-NS) field strengths on non-compact Calabi-Yau 3-folds can serve as a way to partially break supersymmetry from N=2 to N=1 by mass deformation.

TL;DR: In this article, exact solutions for static black holes localized on a three-brane in five-dimensional gravity in the Randall-Sundrum scenario were considered. But the results in this paper are restricted to the case where only one horizon is admitted, outside the Schwarzschild horizon.

TL;DR: In this article, a cumulative analysis of all the available data (DAMA/NaI-1 to 4; statistics of 57986 kg·day) has been performed in terms of WIMP annual modulation signature.

TL;DR: In this paper, the authors analyzed the data from the NA38/50 Collaboration within a thermal model including charm, and compared the calculated with measured yields to demonstrate the non-thermal origin of hidden charm production at SPS energy.

TL;DR: In this paper, the analytic relation between the MS and the pole quark masses is computed to O(α s 3 ) in QCD and the accuracy of the large β 0 approximation is critically examined and the implications of the obtained relation for semileptonic B decay are discussed.

TL;DR: In this article, a new approach to the cosmological constant problem is proposed, which makes essential use of an extra dimension, and the strong curvature region of the solutions may effectively cut off the size of the extra dimension and give rise to macroscopic 4D gravity.

TL;DR: In this article, the authors explore the consequences of placing the Standard Model gauge fields in the bulk of the recently proposed localized gravity model of Randall and Sundrum and find that the Kaluza-Klein excitations of these fields are necessarily strongly coupled and demonstrate that current precision electroweak data constrain the lowest states to lie above ≃23 TeV.

TL;DR: In this paper, a simple criterion to optimise coarse-grainings for exact renormalization group equations is given, aimed at improving the convergence of approximate solutions of flow equations.

TL;DR: The first GNO solar neutrino results for the measuring period GNO I, solar exposure time May 20, 1998 till January 12, 2000 were reported in this article, where counting results for solar runs SR1-SR19 were used till April 4, 2000.

TL;DR: In this paper, the authors considered the case where the Higgs potential is invariant under a discrete symmetry transformation, and derived strong constraints on the mass of the lightest CP-even Higgs boson (Mh) as a function of tanβ.

TL;DR: In this article, the authors explore the phenomenology of a stabilized modulus field in the Randall-Sundrum scenario, and find that if the large separation between branes arises from a small bulk scalar mass, then the modulus is likely to be lighter than the lowest Kaluza-Klein excitations of bulk fields, and consequently may be the first direct signature of the model.

TL;DR: In this article, the authors examined the cross sections for the elastic scattering of neutralinos χ on nucleons p,n, as functions of mχ in the constrained minimal supersymmetric standard model.

TL;DR: In the presence of internal magnetic fields, a D9 brane can acquire a D5 (or anti-D5) R-R charge, and can therefore contribute to the corresponding tadpole as discussed by the authors.

TL;DR: In this article, the authors consider an especially simple version of a thick domain wall in AdS space and investigate how four-dimensional gravity arises in this context, and demonstrate that there are no such resonances in the model they consider.

TL;DR: In this article, the mass spectrum of the Kaluza-Klein (KK) excitations of the gauge fields and their couplings to the boundaries of the fifth dimension were studied.

TL;DR: In this article, the authors explore the implications of focus point supersymmetry for the dark matter problem and show that, in the specific context of minimal supergravity, a cosmologically stable mixed gaugino-Higgsino state emerges as an excellent dark matter candidate.

TL;DR: In this paper, the authors address the issue of whether extra dimensions could have an infinite volume and yet reproduce the effects of observable four-dimensional gravity on a brane, and they suggest that all theories in which contributions to effective 4D gravity come predominantly from the bulk graviton exchange should encounter serious phenomenological difficulties.

TL;DR: In this paper, the authors studied the localization of various spin fields and the cosmological constant on a brane in five-dimensional anti de Sitter space, and showed that spin zero fields are localized on a positive-tension brane.

TL;DR: The analysis of the data collected by the NA50 experiment in 1998, reported in this paper, extends and clarifies the pattern of the previously observed J/ψ anomalous suppression.

TL;DR: In this article, the authors calculate the pressure in QCD with two and three light quarks on a lattice of size 16 3 × 4 using tree level improved gauge and fermion actions.

TL;DR: In this article, a non-relativistic particle model in the plane is proposed, based on the two-parameter central extension of the planar Galilei group.

TL;DR: In this article, the gravitino is the lightest superparticle (LSP) and R-parity is broken, but its lifetime is typically much longer than the age of the universe.

TL;DR: In this article, the authors examined the noncommutative counterpart of QED, called as nonCommutative QED (NC-QED), which admits the matter with only three varieties of charges, i.e., 0, +1 and −1.

TL;DR: In this article, the authors generalized the Penrose limit to show that any leading order solution of the low-energy field equations in any one of the five string theories has a plane wave solution as a limit.

TL;DR: In this paper, a minimal embedding of the Standard Model spectrum in a D-brane configuration of type I string theory is proposed, which is neither grand unified nor supersymmetric but leads to the right prediction of the weak angle for a string scale of the order of a few TeV.

TL;DR: In this article, an Einstein metric of constant negative curvature given an arbitrary boundary metric in three dimensions and a conformally flat one given a conformal flat boundary measure in other dimensions was obtained.