Showing papers in "Physics Letters B in 2009"

TL;DR: In this article, a Generalized Uncertainty Principle (GUP) consistent with string theory, Doubly Special Relativity and black hole physics was proposed, and it was shown that this can predict an upper bound on the quantum gravity parameter in the GUP, from current observations.

TL;DR: In this article, indirect astrophysical signatures of secluded models of WIMP dark matter, characterized by a weak-scale rate for annihilation into light MeV-scale mediators which are metastable to decay into Standard Model states, are analyzed.

TL;DR: In this article, the authors investigated the quantum theory using renormalization group methods and found a relationship between the spectral index and the Higgs mass that is sharply varying for m h ∼ 120 − 135 GeV (depending on the top mass).

TL;DR: In this article, the authors present recent results for the Landau-gauge gluon and ghost propagators in SU (3 ) lattice gluodynamics obtained on a sequence of lattices with linear extension ranging from L = 64 to L = 96 at β = 5.70, thus reaching “deep infrared” momenta down to 75 MeV.

TL;DR: In this paper, it was shown that the Higgs mass mH lies in the interval mmin < mH < mmax, where mmin = [136.7 + (mt− 171.2)× 1.95] GeV, mmax = [184.5 + (m− 171 2)× 0.5]GeV and mt is the mass of the top quark, and the predictions of the spectral index of scalar fluctuati ons and of the tensor-to-scalar ratio practically do not depend on

TL;DR: In this article, the authors considered the non-relativistic Ho\v{r}ava-Lifshitz four-dimensional theory of gravity and showed that it has the same Newtonian and post-Newtonian limits as GR and thus, it passes the classical tests.

TL;DR: In this article, a new analysis of hadron production in central collisions of heavy nuclei is presented, using the statistical model, which is motivated by the availability of final measurements both for the SPS (beam energies 20 − 160 A GeV ) and for the RHIC energies ( s N N = 130 and 200 GeV) and by updates in the hadron mass spectrum.

TL;DR: In this article, a cosmological reconstruction scheme for modified F(R) gravity is developed in terms of e-folding (or, redshift), which can be applied to any FRW cosmology.

TL;DR: In this paper, the shape invariant potentials obtained by deforming the radial oscillator and the trigonometric/hyperbolic Poschl-Teller potentials in terms of their degree l polynomial eigen functions are presented.

TL;DR: In this paper, a class of theories which are scale invariant on quantum level in all orders of perturbation theory is constructed, leading to the existence of a massless dilaton.

TL;DR: In this paper, the minimal B-L extended standard model was investigated under a hypothesis of classically conformal theories, which naturally provided the seesaw mechanism for explaining tiny neutrino masses.

TL;DR: In this article, it was shown that in curved space-time, the cosmological constant Λ has a mild running behavior associated with quantum effects, which could be the very origin of the dynamical nature of the Dark Energy.

TL;DR: In this paper, the authors evaluate the relative likelihoods of these possibilities, on the basis of a global fit to the Standard Model made using the Gfitter package, using the information about the Higgs mass available directly from Higgs searches at LEP and now the Tevatron, and indirectly from precision electroweak data.

TL;DR: In this paper, the authors introduced a new infrared cut-off for the holographic dark energy and studied the correspondence between the quintessence, tachyon, K-essence and dilaton energy density in the flat FRW universe.

TL;DR: In this paper, a modification of this parameter set was proposed, which improved the description of the ground state properties of many nuclei and simultaneously provided an excellent description of excited states with collective character in spherical and deformed nuclei.

TL;DR: In this article, the authors derived conditions under which f(G) gravity models, whose Lagrangian densities f are written in terms of a Gauss-Bonnet term G, are cosmologically viable.

TL;DR: In this article, the authors demonstrate that the combination of the ideas of unimodular gravity, scale invariance, and the existence of an exactly massless dilaton leads to the evolution of the universe supported by present observations.

TL;DR: In this article, a Gaussian distribution of mass and charge is used to describe a regular, i.e. curvature singularity free, charged black hole in higher dimensions.

TL;DR: In this paper, a probe of two flavor D7-branes embedded in the AdS black hole background was used to find a critical temperature at which the system undergoes a second order phase transition.

TL;DR: In this article, it was shown that WIMP dark matter can annihilate via long-lived "WIMPonium" bound states in reasonable particle physics models of dark matter (DM).

TL;DR: In this article, a new method is proposed to calculate wave functions in k T -factorization in [H.-n. Li, S. Feng, J.P. Ma, Q. Wang, Phys. Lett. B 674 (2009) 182, arXiv:0808.0296].

TL;DR: In this paper, the mass and entropy of the black holes with general dynamical coupling constant were obtained in Horava-Lifshitz gravity in the HOG model, and it was shown that these black holes are thermodynamically stable in some parameter space and unstable in other parameter space.

TL;DR: In this paper, the authors obtained the Seiberg-Witten prepotentials for N = 2 SUSY gauge theories with N f 2 N c fundamental multiplets by decoupling 2 Nc − N f multiplets of heavy matter.

TL;DR: In this paper, the Collins and Sivers asymmetries of identified hadrons produced in deep-inelastic scattering of 160 GeV/c muons oil a transversely polarised (LiD)-Li-6 target at COMPASS are presented.

TL;DR: In this article, the authors present updated predictions for the total cross section for Higgs boson production by gluon-gluon fusion in hadron collisions, including the most advanced theoretical information available at present for this observable.

TL;DR: In this article, the influence of an interaction between dark energy and dark matter on the dynamics of galaxy clusters was investigated, and the Layser-Irvine equation was obtained in the presence of interactions.

TL;DR: In this article, the transverse momentum dependence of J / ψ production in heavy ion collisions is investigated in a transport model with both initial production and continuous regeneration of charmonia, which results in a p t suppression in central collisions, the gluon multi-scattering in the initial stage leads to a high p t enhancement, and the regeneration populates J/ ψ s at low p t region and induces a minimum in R AA ( p t ).

TL;DR: In this article, the authors obtained, using a reformulation of the tunneling mechanism, the Hawking black body spectrum with the appropriate temperature for a black hole for a spherically symmetric geometry that is asymptotically flat.

TL;DR: In this article, a local formulation with auxiliary scalars for arbitrary higher-derivative non-local gravity is developed and a natural unification of the early-time inflation epoch with a late-time acceleration stage can also be realized.

TL;DR: In this paper, the problem of pairing in the S 0 1 channel of finite nuclei is revisited and the authors use well-known techniques of Talmi and Moshinsky to expand the matrix elements in a series of separable terms.