Measurement of kinematic and nuclear dependence of R= sigma L/ sigma T in deep inelastic electron scattering.
We report results on a precision measurement of the ratio R=σ_L/σ_T in deep inelastic electron-nucleon scattering in the kinematic range 0.2≤x≤0.5 and 1≤Q^2≤10 (GeV/c)^2. Our results show, for the first time, a clear falloff of R with increasing Q^2. Our R results are in agreement with QCD predictions only when corrections for target mass effects and some additional higher twist effects are included. At small x, the data on R favor structure functions with a large gluon contribution. We also report results on the differences R_A-R_D and the cross section ratio σ^A/σ^D between Fe and Au nuclei and the deuteron. Our results for R_A-R_D are consistent with zero for all x, Q^2 indicating that possible contributions to R from nuclear higher twist effects and spin-0 constituents in nuclei are not different from those in nucleons. The ratios σ^A/σ^D from all recent experiments, at all x, Q^2 values, are now in agreement.

title: First measurements of inclusive muon neutrino charged current differential cross sections on argon.
abstract: The ArgoNeuT Collaboration presents the first measurements of inclusive muon neutrino charged current differential cross sections on argon. Obtained in the NuMI neutrino beam line at Fermilab, the flux-integrated results are reported in terms of outgoing muon angle and momentum. The data are consistent with the Monte Carlo expectation across the full range of kinematics sampled, 0°<θ(μ)<36° and 0<P(μ)<25 GeV/c. Along with confirming the viability of liquid argon time projection chamber technology for neutrino detection, the measurements allow tests of low-energy neutrino scattering models important for interpreting results from long baseline neutrino oscillation experiments designed to investigate CP violation and the orientation of the neutrino mass hierarchy.

title: Working Group Report: Neutrinos

title: A Proposal for a Precision Measurement of the Decay K+ --> pi+ neutrino antineutrino and Other Rare K+ Processes at Fermilab Using the Main Injector

title: Measurement of neutrino oscillations with the MINOS detectors in the NuMI beam.
abstract: This Letter reports new results from the MINOS experiment based on a two-year exposure to muon neutrinos from the Fermilab NuMI beam. Our data are consistent with quantum-mechanical oscillations of neutrino flavor with mass splitting |Deltam2| = (2.43+/-0.13) x 10(-3) eV2 (68% C.L.) and mixing angle sin2(2theta) > 0.90 (90% C.L.). Our data disfavor two alternative explanations for the disappearance of neutrinos in flight: namely, neutrino decays into lighter particles and quantum decoherence of neutrinos, at the 3.7 and 5.7 standard-deviation levels, respectively.

title: Measurement of the background in the NEMO 3 double beta decay experiment
abstract: In the double beta decay experiment NEMO 3 a precise knowledge of the background in the signal region is of outstanding importance. This article presents the methods used in NEMO 3 to evaluate the backgrounds resulting from most if not all possible origins. It also illustrates the power of the combined tracking-calorimetry technique used in the experiment.

title: Renormalization flow in lattice QED.
abstract: An investigation of pure U(1) gauge theory is made based on block-spin transformations for configurations of lattice size 16/sup 4/ down to size 8/sup 4/ and 4/sup 4/. Even operators (five types in the first three representations) and ten renormalized couplings are determined on these smaller lattices. This allows the mapping of the renormalization flow. An interesting fixed-point structure and results on the leading critical exponent are found.

title: Even and odd critical exponents of lattice QED.
abstract: The theory is simulated for Villain's action on ${16}^{4}$ lattices. Block-spin transformations of two different types to ${8}^{4}$, ${4}^{4}$, and ${2}^{4}$ are performed. We estimate the leading even and odd critical exponents and discuss the fixed-point structure of the theory.

title: Four-dimensional pure compact U(1) gauge theory on a spherical lattice.
abstract: We investigate the confinement-Coulomb phase transition in the four-dimensional (4D) pure compact U(1) gauge theory on spherical lattices. The action contains the Wilson coupling {beta} and the double-charge coupling {gamma}. The lattice is obtained from the 4D surface of the 5D cubic lattice by its radial projection onto a 4D sphere, and made homogeneous by means of appropriate weight factors for individual plaquette contributions to the action. On such lattices the two-state signal, impeding the studies of this theory on toroidal lattices, is absent for {gamma}{le}0. Furthermore, here a consistent finite-size scaling behavior of several bulk observables is found, with the correlation length exponent {nu} in the range {nu}=0.35{minus}0.40. These observables include Fisher zeros, specific-heat, and cumulant extrema as well as pseudocritical values of {beta} at fixed {gamma}. The most reliable determination of {nu} by means of the Fisher zeros gives {nu}=0.365(8). The phase transition at {gamma}{le}0 is thus very probably of second order and belongs to the universality class of a non-Gaussian fixed point.

title: Properties of phase transitions of the lattice SU(2) Higgs model.
abstract: We discuss the phase structure of the lattice-gauge--Higgs model for the gauge group SU(2) and Higgs fields in the fundamental representation with a dynamical radial mode. We find that the confinement-Higgs phase transition is of first order for small phi/sup 4/ coupling lambda but weakens with increasing lambda. Correlations of bound-state operators on the phase-transition point at lambda = 0.5, ..beta.. = 2.25 on a 8/sup 3/ x 16 lattice show a scalar state with the mass of 0.2 inverse lattice spacings and a four-times-heavier vector isotriplet.

title: Complex actions for fermions in higher dimensions.
abstract: We discuss the generalization of the complex Langevin approach to fermionic path integrals for more than d = 1+1 dimensions. Whereas one found convincing results in dless than or equal to1+1 there are difficulties with the convergence properties of the complex processes even for free relativistic fermions for d = 2+1. Satisfactory results are obtained only for very small lattices or in a certain asymmetric limit of the coupling parameters.