Showing papers in "Nuclear Physics in 2006"

TL;DR: In this paper, the authors studied the performance of a SU (2 ) L fermion quintuplet with mass 4.4 TeV, accompanied by a charged partner 166 MeV heavier with life-time 1.8 cm, that manifests at colliders as charged tracks disappearing in π ± with 97.7% branching ratio.

TL;DR: In this article, the authors present new nucleosynthesis yields as functions of the stellar mass, metallicity, and explosion energy (corresponding to normal supernovae and hypernovae), and apply the results to the chemical evolution of the solar neighborhood.

TL;DR: In this paper, the experimental hadron yield ratios for central nucleus-nucleus collisions were analyzed in terms of thermal model calculations over a broad energy range, s N N = 27 − 200 GeV, and fits of the experimental data with the model calculations provided the thermal parameters, temperature and baryo-chemical potential at chemical freezeout.

TL;DR: In this article, a 4-dimensional SUSY version of an A4 model for tribimaximal neutrino mixing is presented and the A4 group starting from the modular group.

TL;DR: In this article, the authors presented new methods for the evaluation of one-loop tensor integrals, which have been used in the calculation of the complete electroweak oneloop corrections to e + e − → 4 fermions.

TL;DR: In this paper, it was shown that the dark-matter prediction is not a natural consequence of low-energy supersymmetry, but it requires special relations among parameters, highly sensitive to small variations.

TL;DR: In this article, the authors derived a procedure to count chiral primary states in N = 1 superconformal field theories in four dimensions, and the chiral primaries are counted by putting the N =1 field theory on S 3 × R.

TL;DR: In this article, the authors discuss high energy hadronic collisions within the theory of the color glass condensate and point out that the initial electric and magnetic fields produced in such collisions are longitudinal, which leads to a novel string like description of the collisions, and a large Chern-Simons charge density made immediately after the collision.

TL;DR: In this article, the transverse-momentum distribution of generic high-mass systems (lepton pairs, vector bosons, Higgs particles, etc) produced in hadron collisions is considered, and all-order resummation of the logarithmically-enhanced contributions in QCD perturbation theory is investigated.

TL;DR: In this article, the spin-chain/string Bethe ansatz paradigm was shown to behave qualitatively as wrapping interactions at weak coupling and at strong coupling in the near-BMN limit.

TL;DR: In this article, the authors present what they believe to be the best estimates of the chemical compositions of the solar photosphere and the most pristine meteorites, which they call pristine solar meteorites.

TL;DR: The cooling of a compact star depends very sensitively on the state of matter at supranuclear densities, which essentially controls the neutrino emission, as well as on the structure of the stellar outer layers which control the photon emission as mentioned in this paper.

TL;DR: In this article, the light-cone formulation of relativistic dynamics is used to construct cubic interaction vertices for higher spin fields propagating in flat space of dimension greater than or equal to four.

TL;DR: In this article, the strong coupling constant α s (n f ) at a heavy quark threshold was shown to be stable at four loops in the modified minimal subtraction scheme.

TL;DR: In this article, the authors review the present status of the nucleosynthesis models of low mass AGB stars and present the new challenge of AGB modeling, namely, the study of C-rich and s-rich very metal-poor stars.

TL;DR: In this paper, one loop corrections to single-inclusive particle production in parton-nucleus scattering at high energies are considered, treating the target nucleus as a color glass condensate.

TL;DR: In this paper, the custodial and parity symmetries are used to make the tree level contribution to the T parameter and the anomalous couplings of the bottom quark to the Z very small.

TL;DR: In this paper, the nuclear matrix elements M 0 ν of the neutrinoless double beta decay (0 ν β β ) of most nuclei with known 2 − β β β -decay rates are systematically evaluated using the quasiparticle random phase approximation (QRPA) and renormalized QRPA (RQrPA).

TL;DR: In this article, the authors study the sensitivity of this conclusion to different hydrodynamic assumptions on hadro-chemical and thermal freezeout after the sQGP hadronizes and show that if chemical freezeout occurs at the hadronization time, as required to reproduce the observed hadron yields, then, surprisingly, the differential elliptic flow, v 2 (p T ), for pions continues to increase with proper time in the late hadronic phase until thermal freeze-out and leads to a discrepancy with the v 2 p T ) data.

TL;DR: In this article, the major neutrino scattering, absorption, and production processes that together influence the outcome of core collapse and the cooling of protoneutron stars are described.

TL;DR: In this paper, the Kahler potentials are derived for reductions on SU ( 3 ) structure orientifolds and shown to consist of the logarithm of the two Hitchin functionals.

TL;DR: In this article, the authors considered four-dimensional supersymmetric compactifications of the E 8 × E 8 heterotic string on Calabi-Yau manifolds endowed with vector bundles with structure group SU ( N ) × U ( 1 ) and five-branes.

TL;DR: In this article, the embedding of the SM hypercharge into an orientifold gauge group is studied, and possible embeddings are classified, and a systematic construction of bottom-up configurations and top-down orientiferold vacua is achieved, solving the tadpole conditions in the context of Gepner orientifolds.

TL;DR: The European Commission, HPRN-CT2002-00311 (EURIDICE) this paper, FPA2004-00996, HU2002-0044, HUE2002-062, HPU2002-071, HUPOS03/013, GV04B-594 and GV05/015, this paper

TL;DR: In this article, a logarithmic conformal field model that extends the (p, q ) Virasoro minimal models is defined as the kernel of the two minimal-model screening operators.

TL;DR: In this paper, the see-saw mechanism was used to generate a fermion mass structure consistent with all quark and lepton masses and mixing angles in a model with an SU ( 3 ) f family symmetry.

TL;DR: In this article, a complete analysis of the electroweak precision observables is performed within a recently proposed minimal composite Higgs model, realized as a 5-dimensional warped compactification.

TL;DR: In this paper, anomalous dimensions of (super)conformal Wilson operators at weak and strong coupling making use of the integrability symmetry on both sides of the gauge/string correspondence and elucidate the origin of their single-logarithmic behavior for long operators/strings in the limit of large Lorentz spin.

TL;DR: In this article, the abundances of short-lived radionuclides in the early Solar System (ESS) are reviewed, as well as the methodology used in determining them, and the results are compared with the inventory estimated for a uniform galactic production model.

TL;DR: In this article, the authors review the nuclear astrophysics aspects of accreting neutron stars in X-ray binaries and summarize open astrophysical questions in light of recent observations and their relation to the underlying nuclear physics.