81 research outputs found
Feasibility of search for nuclear electric dipole moments at ion storage rings
The sensitivity much better than cm may be expected in the
searches for electric dipole moments (EDM) of -active nuclei at ion
storage rings. It would be a serious progress in studies of the CP-violation
problem.Comment: 9 pages, latex, no figure
Infinite Renormalization of Theta-Term and Jarlskog Invariant for CP-Violation
The logarithmic ultraviolet divergence in the theta-term induced by
electroweak interactions in the Kobayashi-Maskawa model of CP-violation, found
by Ellis and Gaillard, is discussed. We relate it to the Jarlskog CP-odd
invariant of quark mass matrix. The divergence arises in 14th order in Higgs
coupling as well as in 12th order plus 2nd order in U(1) gauge boson coupling.Comment: 6 pages + 1 figure (included), LaTex, TPI-MINN-93/91-T,
UMN-TH-1212/9
On Quantization of Black Holes
A simple argument is presented in favour of the equidistant spectrum in
semiclassical limit for the horizon area of a black hole. The following
quantization rules for the mass and horizon area are proposed:
M_N = m_p [N(N+1)]^{1/4}; A_{Nj} = 8\pi l_p^2 [\sqrt{N(N+1)} + \sqrt{N(N+1) -
j(j+1)} ]. Here both and are nonnegative integers or half-integers.Comment: 4 pages, late
Comment on ``Proton Polarization Shifts in Electronic and Muonic Hydrogen''
We demonstrate that criticisms concerning our work nucl-th/9704043, made in
the recent preprint hep-ph/9903352, are unfounded. The improvements over our
results claimed in hep-ph/9903352 are in fact spurious, being based mainly on
misunderstandings and on dubious theoretical models.Comment: 3 pages, latex, no figures, corrected style of references in abstrac
Approximate Selection Rule for Orbital Angular Momentum in Atomic Radiative Transitions
We demonstrate that radiative transitions with \Delta l = - 1 are strongly
dominating for all values of n and l, except small region where l << n.Comment: 5 pages, 1 figur
Gravitational four-fermion interaction on the Planck scale
The four-fermion gravitational interaction is induced by torsion, and gets
essential on the Planck scale. On this scale, the axial-axial contribution
dominates strongly in the discussed interaction. The energy-momentum tensor,
generated by this contribution, is analyzed, as well as stability of the
problem with respect to compression. The trace of this energy-momentum tensor
can be negative.Comment: 4 pages, few comments adde
Velocity of signal in attractive potential and propagation of light in gravitational field
The propagation of a massless field in attractive and repulsive potentials is
considered. It is shown that though the group velocity in such potentials can
be larger than one, the wave front propagates with the speed of light. A
larger-than-one group velocity leads only to a strong deformation of the wave
packet. The results obtained are applied to the light propagation in a
gravitational field. An erroneous assertion concerning the last problem,
recently made in the literature, is refuted.Comment: 6 pages, latex twic
Radiative Corrections to P-Levels in the Two-Body QED Problem
The physical origin of the radiative corrections to -levels in
the two-body QED problem is elucidated. Then we demonstrate that the next
order, , corrections to those levels are due to the anomalous
magnetic moment only.Comment: 6 pages, PSU/TH/14
Comment on "New Experimental Limit for the Electric Dipole Moment of the Neutron"
A new limit for the neutron electric dipole moment has been recently
reported. This new limit is obtained by combining the result from a previous
experiment with the result from a more recent experiment that has much worse
statistical accuracy. We show that the old result has a systematic error
possibly four times greater than the new limit, and under the circumstances,
averaging of the old and new results is statistically invalid. The conclusion
is that it would be more appropriate to quote two independent but mutually
supportive limits as obtained from each experiment separately.Comment: 7 pages, 2 figure
Nuclear Anapole Moments in Single Particle Approximation
Nuclear anapole moments of \;^{133}Cs, \;^{203,205}Tl, \;^{207}Pb,
\;^{209}Bi are treated in the single-particle approximation. Analytical
results are obtained for the oscillator potential without spin-orbit
interaction. Then the anapole moments are calculated numerically in a
Woods-Saxon potential which includes spin-orbit interaction. The results
obtained demonstrate a remarkable stability of nuclear anapole moment
calculations in the single-particle approximation.Comment: 20 pages, LateX, One figure available upon request, BINP-93-11
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