Showing papers in "Nuclear Physics in 2010"

TL;DR: In this paper, it was shown that all scattering amplitudes in the maximally supersymmetric N = 4 super-Yang-Mills theory possess dual superconformal symmetry.

TL;DR: In this paper, the conformal symmetry of the gauge theory, broken by cusp anomalies, was used to derive anomalous conformal Ward identities valid to all loops and show that they uniquely fix the form of the finite part of a Wilson loop with n cusps (up to an additive constant) for n=4n=4 and 5 and reduce the freedom in it to a function of conformal invariants for n⩾6n⩽6.

TL;DR: In this paper, the parton distributions of the nucleon from a global set of hard scattering data using the NNPDF methodology were determined using a neural network based parton parametrization.

TL;DR: In this article, the authors compare the trace anomaly, strangeness and baryon number fluctuations calculated in lattice QCD with expectations based on hadron resonance gas model and find that there is a significant discrepancy between the resonance gas and the lattice data.

TL;DR: In this article, a statistical model for the equation of state and the composition of supernova matter is presented, consisting of an ensemble of nuclei and interacting nucleons in nuclear statistical equilibrium.

TL;DR: In this article, the AGT relation of conformal blocks for the Virasoro and W-algebras in terms of Nekrasov's special functions is considered.

TL;DR: In this paper, a general framework for the inclusion of heavy quark mass contributions to deep-inelastic structure functions and their perturbative matching to structure functions computed in variable-mass schemes is discussed.

TL;DR: In this paper, the authors present a method to improve the description of 0+1 dimensional boost invariant dissipative dynamics in the presence of large momentum-space anisotropies by reorganizing the canonical hydrodynamic expansion of the distribution function around a momentum space anisotropic ansatz.

TL;DR: In this paper, an extensive study of FCNC and CP Violation within Supersymmetric (SUSY) theories with particular emphasis put on processes governed by b → s transitions and their correlations with processes governed with b → d transitions, s → d transition, D 0 − D ¯ 0 oscillations, lepton flavour violating decays, electric dipole moments and ( g − 2 ) μ.

TL;DR: In this paper, the authors construct global F-theory GUT models on del Pezzo surfaces in compact Calabi-Yau fourfolds realized as complete intersections of two hypersurface constraints, which allow for the phenomenologically relevant Yukawa couplings and GUT breaking to the MSSM via hypercharge flux while preventing dimension-4 proton decay.

TL;DR: In this paper, the authors consider the diffuse gamma ray data from Fermi first year observations and compare them to the gamma ray fluxes predicted by Dark Matter annihilation or decay (both from prompt emission and from Inverse Compton Scattering), for different observation regions of the sky and a range of Dark Matter masses, annihilation/decay channels and Dark Matter galactic profiles.

TL;DR: In this paper, the cosmic-ray excess observed by PAMELA in the positron fraction and by FERMI and HESS in HESS was interpreted in terms of DM annihilations or decays into leptonic final states.

TL;DR: In this paper, a determinantal formula for the one-point distribution of the solution h(x, t) valid for any x and t> 0 was obtained for the weakly asymmetric simple exclusion process with step initial conditions.

TL;DR: In this paper, the authors considered the total production cross section of heavy coloured particle pairs in hadronic collisions at the production threshold and derived an analytic expression for the two-loop soft anomalous dimension at threshold for all production processes of interest.

TL;DR: In this paper, the authors argue that features of hadron production in relativistic nuclear collisions, mainly at CERN-SPS energies, may be explained by the existence of three forms of matter: Hadronic Matter, Quarkyonic Matter, and a Quark-Gluon Plasma.

TL;DR: In this article, it is found that the vacuum acts as an inversely populated medium which is able to generate stimulated radiation, and without back reaction (not considered in this paper) this effect leads to the explosion.

TL;DR: In this paper, a computer program that incorporates besides the NLO QCD corrections to t t ¯ production and decay also mixed weak-QCDC corrections to the production amplitudes, and that allows for studies of correlated versus uncorrelated t t¯ events is presented.

TL;DR: In this paper, the authors use functional renormalization group methods to study gravity minimally coupled to a free scalar field and show that such a fixed point indeed exists within the truncations considered, lending strong support to the conjectured asymptotic safety.

TL;DR: In this article, it was shown that dimensional recurrence relation and analytical properties of the loop integrals as functions of complex variable D (space-time dimensionality) provide a regular way to derive analytical representations of loop integral.

TL;DR: In this article, the formation of chiral density waves in quarkyonic matter was studied, where cold, dense quarks experience confining forces and the number of colors, N c, is large, and the quark chemical potential, μ, is much larger than renormalization mass scale, Λ QCD.

TL;DR: In this paper, the authors derived the reaction rates for nuclei in the A = 14 to 40 region using a method based on Monte Carlo techniques, which has been described in the preceding paper (Paper I).

TL;DR: In this paper, the authors describe non-standard contributions to semileptonic processes in a model independent way in terms of an SU ( 2 ) L × U ( 1 ) Y invariant effective lagrangian at the weak scale, from which they derive the low-energy effective Lagrangian governing muon and beta decays.

TL;DR: In this paper, it was shown that in the presence of background fluxes, F-theory based constructions automatically achieve hierarchical Yukawa matrices in the quark and lepton sectors.

TL;DR: In this paper, the authors show that all master integrals appearing in the process of reduction of massless propagators at three and four loops can be analyzed in terms of trivial watermelon-like integrals.

TL;DR: In this article, the perturbative five loop anomalous dimension of the Konishi operator in N = 4 SYM theory was derived by evaluating finite size effects using Luscher formulas adapted to multimagnon states at weak coupling.

TL;DR: In this article, a partonic interpretation for the deeply virtual Compton scattering (DVCS) measurements of the H1 and ZEUS Collaborations in the small- x B region in terms of generalized parton distributions is given.

TL;DR: In this paper, a complete solution for the trilinear interactions of arbitrary spins s 1, s 2, s 3 in a flat background is presented, and the possibility to enlarge this construction to higher order interactions in the gauge field is discussed.

TL;DR: In this article, the dual descriptions for the Seiberg-Witten theory in the presence of surface operators were studied and the Nekrasov partition function for a four-dimensional N = 2 gauge theory with a surface operator is believed equal to the wave function of the corresponding integrable system, or the Hitchin system, and is identified with the conformal block with a degenerate field via the AGT relation.

TL;DR: In this article, the self energies and tadpoles of the neutral Higgs bosons of the NMSSM were calculated and the two-loop O( α t α s + α b α s ) corrections to the Higgs masses were computed.

TL;DR: In this article, the authors calculate the anomalous dimension of twist-two operators in the planar N = 4 SYM theory and employ the first finite-size correction for the AdS 5 × S 5 sigma model to determine the wrapping correction.