Showing papers in "Nuclear Physics in 2012"

TL;DR: In this article, the electroweak phase transition (EWPhT) in extensions of the Standard Model with one real scalar singlet can be first-order for realistic values of the Higgs mass.

TL;DR: In this article, the authors investigated the impact of the recent LHC Higgs searches on the scale of supersymmetry breaking and showed that an upper bound of 127 GeV on the Higgs mass implies an upper upper bound on the scales of Split Supersymmetry of about 10 8 GeV, while no firm conclusion can yet be drawn for high-scale supersymmetric breaking.

TL;DR: In this paper, the total top-quark pair production cross section at the Tevatron and LHC was computed based on approximate NNLO results, and on the summation of threshold logarithms and Coulomb enhancements to all orders with next-to-next-toleading log-arithmic (NNLL) accuracy.

TL;DR: In this paper, the authors studied lepton mixing patterns derived from finite modular groups Γ N, requiring subgroups G ν and G e to be preserved in the neutrino and charged lepton sectors, respectively.

TL;DR: In this paper, the authors considered the Next-to-Minimal Supersymmetric Standard Model (NMSSM) with a SM-like Higgs boson near 125 GeV involving relatively light stops and gluinos below 1 TeV in order to satisfy naturalness requirements.

TL;DR: In this paper, the parton distributions of the nucleon from a global set of hard scattering data using the NNPDF methodology at LO and NNLO in perturbative QCD were determined.

TL;DR: In this article, K-nucleon interactions are investigated in the framework of coupled-channels dynamics based on the next-to-leading order chiral SU(3) meson-baryon effective Lagrangian.

TL;DR: In this paper, the influence of the hyperon potentials on the stiffness of the hadronic equation of state (EoS) was systematically investigated and it was shown that the maximum mass of purely nucleonic stars is very sensitive to the effective nucleon mass but only very little to the compression modulus.

TL;DR: In this article, the Lambda parameter and the missing lattice scale are determined via the kaon decay constant, for whose chiral extrapolation complementary strategies are compared. And they also give a value for the scale r 0 in physical units as well as an improved determination of the renormalization constant Z A.

TL;DR: In this article, Euclidean 5d supersymmetric gauge theories on the five-sphere with vector and hypermultiplets were constructed and the SUSY transformation and action were explicitly determined from the standard Noether procedure as well as from off-shell supergravity.

TL;DR: In this article, the light-cone approach to relativistic field dynamics is used to derive functions of parity invariant cubic interaction vertices for totally symmetric and mixed-symmetry massive and massless fields.

TL;DR: In this article, the suppression of bottomonium states in ultrarelativistic heavy ion collisions is studied. But the authors focus on the suppression as a function of centrality, rapidity, and transverse momentum.

TL;DR: In this article, the authors developed a reweighting method for incorporating new datasets in parton fits based on a Monte Carlo representation of PDFs, and showed how to construct an unweighted PDF replica set which is statistically equivalent to a given reweighted set.

TL;DR: In this article, the authors exploit the operator product expansion technique of conformal field theories to study the inflationary correlators enjoying the symmetries present during the de Sitter epoch.

TL;DR: In this article, a set of chirality inducing G(4)-fluxes in global F-theory compactifications on Calabi-Yau four-folds were constructed.

TL;DR: In this paper, the authors analyzed the experimental rate of neutrinoless double beta decay by exchanging virtual sterile neutrinos, that mix with the ordinary neutrino and are heavier than 200 MeV.

TL;DR: In this article, the D 3-brane tadpole and the induced chirality indices are computed directly in F-theory compactifications by identifying algebraic cycles in the Weierstrass equation of elliptic Calabi-Yau fourfolds.

TL;DR: In this article, the gravity dual to a class of three-dimensional N = 2 supersymmetric gauge theories on a U (1) × U(1)-invariant squashed three-sphere, with a non-trivial background gauge field, was presented.

TL;DR: In this article, a bound H-dibaryon in the SU ( 3 ) limit is found in the flavor-singlet J P = 0 + channel with the binding energy of about 26 MeV for the lightest quark mass M ps = 469 MeV.

TL;DR: In this article, a simple procedure for finding vacua of gauged supergravity models, based on the variation of the embedding tensor rather than on a direct minimization of the scalar potential, was discussed.

TL;DR: In this paper, a new type of constrained sequential dominance involving new vacuum alignments along the (1,2,0) T or (1 0,2) T directions in flavour space is proposed.

TL;DR: In this paper, a new cohomological formalism for the analysis of vertices of higher-spin fields of any symmetry and/or order of nonlinearity is proposed within the frame-like approach.

TL;DR: In this paper, all consistent parity-invariant cubic vertices are obtained for d ⩾ 4 in a closed form pointing out the key role of their flat-space counterparts.

TL;DR: In this paper, the AGT relation was interpreted as the Hubbard-Stratonovich duality relation to the case of 5d gauge theories. But the problem with extra poles in individual Nekrasov functions still exists, therefore, such a proof works only for β = 1, i.e. for q=t in MacDonaldʼs notation.

TL;DR: In this paper, the authors show that the lifetime and existence of a Bose-Einstein condensate depends on whether inelastic processes, that occur on the same time scale as elastic processes, increase or decrease the number of gluons.

TL;DR: In this paper, the integrand of the correlation function of four stress-tensor multiplets in N = 4 SYM at weak coupling was constructed using graph-theoretical tools.

TL;DR: In this article, the authors analyzed the spectrum of excitations around the Gubser-Klebanov-Polyakov (GKP) rotating string in the long string limit and constructed a parametric representation for their dispersion relations at any value of the string tension.

TL;DR: The modular properties of fractional level sl ˆ (2 ) -theories and the application of the Verlinde formula have a long and checkered history in conformal field theory as discussed by the authors.

TL;DR: In this article, the four-point correlation function of stress-tensor supermultiplets in N = 4 SYM was studied using Lagrangian insertions. And the authors showed that the resulting all-loop integrand possesses an unexpected complete symmetry under the exchange of the four external and all the internal (integration) points.

TL;DR: In this paper, the degree of fine-tuning needed in a generalised version of the NMSSM that follows from an underlying Z 4 or Z 8 R-symmetry was determined.