Il Nuovo Cimento A (1965-1970)
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Radiative corrections to Z0 jet asymmetries in e+e− annihilation
Il Nuovo Cimento A (1965-1970) - - 1983
On the theory of coherent neutrino scattering from crystals
Il Nuovo Cimento A (1965-1970) - Tập 94 - Trang 42-50 - 2008
Recently, Weber has analyzed the scattering of (anti)-neutrinos from a crystal, predicting that the neutrino-nuclear cross-section is multiplied by a coherence factorO(N
2), whereN is the number of nuclei in the crystal. This leads to a macroscopic force on the crystal, for which he reports finding preliminary evidence using a fission reactor as a source of electron antineutrinos. Butler has since......
Equal-time algebra and light-cone commutators
Il Nuovo Cimento A (1965-1970) - Tập 18 - Trang 663-674 - 2007
We discuss the sum rules of equal-time algebra in a refined form of the infinite-momentum limit and show that they reduce to those obtained from light-cone commutators.
Diagnostics methods for beam-plasma experiments
Il Nuovo Cimento A (1965-1970) - Tập 106 - Trang 1851-1856 - 2008
We report the first optical diagnostics of the dense plasma of a Z-pinch helium plasma which is used as a plasma target for investigation of beam-plasma interaction. Information about dynamics of the plasma and the relevant plasma parameters was obtained by spatially, temporally and spectrally resolved measurements of its visible light emission. The Stark broadening of the HeIIP
α andP
β line yiel......
Transitions in123Sb
Il Nuovo Cimento A (1965-1970) - Tập 41 Số 1 - Trang 14-20 - 1977
The X- and γ-ray and electron spectra associated with the (41.8 ± 0.5) min123Snm decay were measured by using high-resolution Ge(Li) and six-gap β-ray spectrometers. The123Snm activity was produced by irradiating enriched isotopes,122Sn (97.8%) with thermal neutrons and124Sn (96%) with fast neutrons. The present investigation besides confirming the weak transitions yields a hitherto unreported 170......
On the running coupling constant in relativistic bound-state problems
Il Nuovo Cimento A (1965-1970) - Tập 93 Số 2 - Trang 99-112 - 1986
Jost-solution phase-shift to approach potential scattering
Il Nuovo Cimento A (1965-1970) - Tập 58 - Trang 160-170 - 2016
The behaviour near the origin of the irregular or Jost solutionf(λ,−k, r) of the radial Schrödinger equation for Yukawa-like potentials is considered. When both the total and centrifugal energies are negative it resembles the asymptotic behaviour of the regular solution π(λ,k, r) for positive values of these variables. A new description of the scattering process is thus obtained by means of the ir......
Search for quantum systems with a given spectrum-generating algebra: detailed study of the case ofSO 2,1
Il Nuovo Cimento A (1965-1970) - Tập 2 - Trang 217-236 - 2007
A method is introduced to determine the HamiltoniansH of the quantum-mechanical systems having a given Lie algebra as their spectrum-generating algebra (SGA). Application of this method to the particular case in which the SGA is assumed to be the Lie algebraSO
2,1 allows under several assumptions the determination of a general solutionH, for a system of two spinless particles, having this algebra ......
The low-energy theorem for the forward compton amplitude of a stationary composite system and the FW additive external electromagnetic interaction
Il Nuovo Cimento A (1965-1970) - Tập 42 - Trang 259-266 - 2007
We show that the low-energy theorem for the forward Compton amplitude of a stationary composite system in states with nonzero internal orbital angular momentum can only be verified with the use of the FW additive external electromagnetic interaction to order 1/M
3 together with the relativistic c.m. variables to order 1/M
2, contrary to what is usually believed. We also explicitly demonstrate the ......
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