A widely used relativistic Fermi gas model and plane-wave impulse approximation approach are tested against electron-nucleus scattering data. Inclusive quasi-elastic cross section are calculated and compared with high-precision data for C, O, and Ca. A dependence of agreement between calculated cross section and data on a momentum transfer is shown. Results for the 12C(νμ, μ ) reaction are pres...

We compute the threshold-resummed cross section for pseudo-scalar MSSM Higgs boson production by gluon fusion at hadron colliders. The calculation is performed at next-to-next-to leading logarithmic accuracy. We present results for both the LHC and Tevatron Run II. We analyze the factorization and renormalization scale dependence of the results, finding that after performing the resummation the...

We investigate azimuthal correlations in deep inelastic diffractive scattering, e+ p → e+ p̃+X. The dependence of the ep cross section on the angle between the lepton plane and some direction in the hadronic final state has a simple relation with cross sections and interference terms of the subreaction γ∗+p → X+ p̃. Its measurement can be used to constrain the cross section for longitudinally pol...

We critically examine the possibility of determining the parity of the Θ + (1540) from the reactions N N → Θ + Y (Y = Λ, Σ) recently discussed in the literature. Specifically, we study the energy dependence of those observables that were suggested to be the most promising ones to unravel the parity of the Θ + , namely the spin correlation coefficient A xx , and the spin transfer coefficient D x...

We study the spectroscopic properties of thin films of potassium ytterbium gadolinium double tungstates, KYb0.57Gd0.43(WO4)2, and potassium ytterbium lutetium double tungstates, KYb0.76Lu0.24(WO4)2, specifically at the central absorption line near 981 nm wavelength, which is important for amplifiers and lase...

This paper considers the problem of testing for cross section independence in limited dependent variable panel data models. It derives a Lagrangian multiplier (LM) test and shows that in terms of generalized residuals of Gourieroux, Monfort, Renault and Trognon (1987) it reduces to the LM test of Breusch and Pagan (1980). Due to the tendency of the LM test to over-reject in panels with large N ...

In this paper we discuss tests for residual cross section dependence in nonlinear panel data models. The tests are based on average pair-wise residual correlation coefficients. In nonlinear models, the definition of the residual is ambiguous and we consider two approaches: deviations of the observed dependent variable from its expected value and generalized residuals. We show the asymptotic con...

The long standing mystery of smallness of diffractive dissociation of hadrons to large effective masses (the Pomeron-proton cross section is only 2 mb) witnesses that the gluonic clouds of valence quarks are so small (r0 = 0.3 f m) that soft interaction hardly resolves those gluons (diffraction is ∝ r 4 0). A color-dipole light-cone (LC) approach is developed which incorporates a strong nonpert...

This document contains results and other material that is supplementary to Duffie, Eckner, Horel, and Saita (2009). Section I extends the basic model to allow for unobserved cross-sectional heterogeneity of default risk. Section II allows for a nonlinear dependence of default intensity on distance to default, through a simple non-parametric specification. Section III provides some information o...

We show that the rising total cross section σ(γγ → hadrons) recently observed by the L3 and OPAL Collaborations at LEP are fully consistent with the impact-picture for high-energy scattering. The impact picture is then used to predict this total cross section at higher energies. These experimental results confirm once more the success of the theoretical approach, which predicted for the first t...