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The strong-interaction corrections to the matrix element of the K L → 2 μ decay and the K L - K S mass difference arising from gluon exchanges at short distances are considered. We discuss the controversy existing in the literature on the problem and try to elucidate our approach proposed...
Two classes of lepton models which have natural μ e universality and μ e -flavor-diagonal neutral currents are studied within the SU(2) x U(1) gauge-theory framework. One of them has both V + A and V - A decaying negatively charged heavy leptons, vanishing μ → e γ and μ → ee e ¯ decay...
The inclusive production of the Δ ( 1236 ) is considered in a parameter-free Mueller-Regge model with absorption corrections. The inclusive cross sections and the density matrix elements are obtained and are compared with the experimental data.
For the description of low-energy π N scattering, 1/1 Padé approximants have had limited success starting from Lagrangian-induced power series. We have shown elsewhere that, from a formal power series whose generating kernel can in principle be approximated by a kernel of finite rank N , we can...
If the Pomeron-exchange contribution to 2 → 2 amplitudes obeys strict s -channel helicity conservation, then the Reggeon-Pomeron contribution to 2 → 3 amplitudes has a very simple form. Tests of this form are discussed.
We derive formulas to estimate the inclusive distribution of charged pions due to annihilation which utilize p ¯ p - pp differences in a way that does not violate charge symmetry.
The deep-inelastic structure function W 2 is calculated using the impulse approximation for mass-shell partons in the target-nucleon rest system. Bjorken scaling and the approach to scaling are shown to follow from parton kinematics in the rest system. The partons are identified as quarks and a...
We generalize and elaborate a model recently proposed by Cheng and Li. It is characterized by the breakdown of separate conservation laws for e and μ lepton types and allows for such processes as μ → e + γ , μ → 3 e . Our generalization incorporates the singly charged heavy lepton...
Recent SLAC results on inclusive scattering of polarized electrons from polarized protons are compared to theoretical models for the distribution of partons in a polarized proton. It is shown that various models, including one proposed earlier by the authors, are in generally good agreement with...
Single-term Veneziano dual amplitudes with nondegenerate Regge slopes are examined in detail. Factorization of parent resonance residues and the equal-spacing rule extracted from the universal-slope case are used to determine all the leading-meson-trajectory parameters in terms of that of the ρ...
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