1,046 research outputs found
Electric dipole and magnetic quadrupole moments of the boson via a CP-violating vertex in effective Lagrangians
The possibility of nonnegligible electric dipole ()
and magnetic quadrupole () moments induced by the most general
vertex is examined via the effective Lagrangian technique. It is assumed
that new heavy fermions induce an anomalous CP-odd component of the
vertex, which can be parametrized by an -invariant
dimension-six operator. This anomalous contribution, when combined with the
standard model CP-even contribution, lead to CP-odd electromagnetic properties
of the boson, which are characterized by the form factors and . It is found that is divergent, whereas is finite,
which reflects the fact that the latter cannot be generated at the one-loop
level in any renormalizable theory. Assuming reasonable values for the unknown
parameters, we found that e-cm,
which is eight orders of magnitude larger than the SM prediction and close to
the upper bound derived from the neutron electric dipole moment. The estimated
size of the somewhat less-studied moment is of the order of
e-cm^2, which is fifteen orders of magnitude above the SM
contribution.Comment: 7 pages, 6 figures, REVTEX styl
CP-odd static electromagnetic properties of the W gauge boson and the t quark via the anomalous tbW coupling
In the framework of the electroweak chiral Lagrangian, the one-loop induced
effects of the anomalous coupling, which includes both left- and
right-handed complex components, on the static electromagnetic properties of
the boson and the quark are studied. The attention is focused mainly on
the CP-violating electromagnetic properties. It is found that the
anomalous coupling can induce both CP-violating moments of the boson,
namely, its electric dipole () and magnetic quadrupole
() moments. As far as the quark is concerned, a potentially
large electric dipole moment can arise due to the anomalous
coupling. The most recent bounds on the left- and right-handed parameters from
meson physics lead to the following estimates e-cm and e-cm, which
are 7 and 14 orders of magnitude larger than the standard model (SM)
predictions, whereas may be as large as e-cm, which is about 8
orders of magnitude larger than its SM counterpart.Comment: This paper has been merged with hep-ph/0612171 for publication in
Physical Review
Оптимизация нормальных режимов линий электропередачи
In order to optimize normal regimes of the power transmission lines notions of economic, maximum and the largest efficiency of a transmission line are used. Power losses by wire corona transmission losses are considered.Для оптимизации нормальных режимов используются понятия экономического, максимального и наибольшего коэффициентов полезного действия линии передачи. Учтены потери мощности на коронирование проводов
Test of the ATLAS pion calibration scheme in the ATLAS combined test beam
Pion energy reconstruction is studied using the data collected during the
2004 ATLAS combined test beam. The strategy to extract corrections for the
non-compensating nature of the ATLAS calorimeters for dead material losses and
for leakage effects is discussed and assessed. The default ATLAS strategy based
on a weighting technique of the energy deposits in calorimeter cells is
presented and compared to a novel technique exploiting correlations among
energy deposited in calorimeter layers.Comment: 8 pages, 6 figures, to appear in the Proceedings of the XIII
International Conference on Calorimetry in High Energy Physics (CALOR08), May
2008, Pavia, Italy - Journal of Physics: Conference Serie
О целесообразной степени уменьшения индуктивного сопротивления электропередачи
The paper considers dependences of transmitted system power limits on the compensation rate of a power line reactive impedance. Peculiar features of these dependences are revealed in the paper.Рассмотрены зависимости предела передаваемой мощности системы передачи от степени компенсации реактивного сопротивления ЛЭП, Выявлены особенности этих зависимостей
Основные принципы компенсации параметров линий электропередачи в электрических сетях энергосистем
The paper contains systemization of principles and methods for parameter compensation of power lines in power system networks.Дается систематизация принципов и способов компенсации параметров линий электропередачи в электрических сетях энергосистем.
О параметрах компенсаторов реактивной мощности в электропередачах переменного тока
The paper considers selection methods of reactive power compensator parameters of for alternating current transmissions by different conditions. Calculated relationships and graphic dependences are obtained.Рассмотрены методы выбора параметров компенсаторов реактивной мощности в электропередачах переменного тока по различным условиям. Получены расчетные соотношения и графические зависимости
Об эффективности компенсации параметров ЛЭП и повышении их управляемости
The paper considers efficiency pertaining to parameter compensation of electric power line, higher efficiency of longitudinal compensation owing to controlled shunt reactors. Рассмотрены эффективность компенсации параметров ЛЭП, а также повышение эффективности продольной компенсации за счет управляемых шунтирующих реакторов
Особенности работы четвертьволновой электропередачи в электрической системе
The paper contains an analysis of the operational conditions of a quarter-wave power supply in an electric system. Its applicability for the operation in electric mains and electric power transportation is shown in the paper. Проведен анализ условий работы четвертьволновой электропередачи в электрической системе. Показана ее применяемость для работы в электрических сетях и для транспорта электроэнергии
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