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Your search keyword '"Barkanova, Svetlana"' showing total 8 results
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8 results on '"Barkanova, Svetlana"'

2. NLO electroweak radiative corrections for four-fermionic process at Belle II.

Author

Aleksejevs, Aleksandrs, Barkanova, Svetlana, and Zykunov, Vladimir

Subjects
*ELECTROWEAK interactions, *KINEMATICS, *NUCLEAR cross sections, *RADIATIVE corrections, *FERMIONS, *POLARIZATION (Nuclear physics)
Abstract

We discuss the next to the leading order (NLO) electroweak radiative corrections to the e-e+ → f- f+(γ) cross section asymmetry, for polarized and unpolarized beam scenario. The left-right and forward-backward amplitudes, with and without radiative corrections, are evaluated and compared for various kinematics. The hard bremsstrahlung is included for arbitrary energy cuts. The radiative corrections are shown to be significant and having a non-trivial dependency on the kinematic conditions. The calculations are relevant for the ultra-precise low-energy experiment Belle II planned at SuperKEKB. [ABSTRACT FROM AUTHOR]

Published
2017
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4. Concerning Knowledge: Assessing Radon Knowledge and Concern in Rural Nova Scotia.

Author

Abramson, Zelda, Barkanova, Svetlana, and Redden, Anna

Subjects
*RADON detectors, *RADIOACTIVE substances, *NOBLE gases, *RADON
Abstract

A homeowner survey (n=152), designed to assess knowledge of radon health effects, concern regarding radon exposure in the home, and interest in radon testing, was conducted in a small university town in uranium-rich Nova Scotia, Canada. Although approximately 10% of lung cancer deaths in Canada are attributable to residential radon exposure, most respondents indicated that they had little knowledge of and little concern about radon and its health effects. There was a significant positive relationship between knowledge and concern but even when knowledge is high, levels of concern remain relatively low. Unless government policies address residential radon testing and mitigation, families will remain at risk of radon exposure in their homes. [ABSTRACT FROM AUTHOR]

Published
2014

5. Quadratic electroweak corrections for polarized Møller scattering.

Author

Aleksejevs, Aleksandrs, Barkanova, Svetlana, Kolomensky, Yury, Kuraev, Eduard, and Zykunov, Vladimir

Subjects
*ELECTROWEAK interactions, *SCATTERING (Physics), *CP violation, *SYMMETRY (Physics), *RADIATIVE corrections, *PHYSICS experiments
Abstract

This paper discusses the two-loop electroweak radiative corrections to the parity-violating e-e-→ e-e-(&ggr;)(&ggr;&ggr;) scattering asymmetry induced by squaring one-loop diagrams. The calculations are relevant for the ultra-precise 11 GeV MOLLER experiment planned at Jefferson Laboratory and experiments at future high-energy colliders. The imaginary parts of the amplitudes are taken into consideration consistently in both the infrared-finite and divergent terms. The size of the obtained partial correction is significant, which indicates a need for a complete study of the two-loop electroweak radiative corrections in order to meet the precision goals of future experiments. [ABSTRACT FROM AUTHOR]

Published
2012
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6. NLO radiative corrections for forward-backward and left-right asymmetries at a B-factory.

Author

Aleksejevs, Aleksandrs, Barkanova, Svetlana, Miller, Caleb, Roney, J. Michael, and Zykunov, Vladimir

Subjects
*MONTE Carlo method, *RADIATIVE corrections, *PHOTONS, *RESONANCE
Abstract

This paper presents the first calculations of the parity-violating polarization asymmetry and forward-backward asymmetry of the e+e-→μ+μ-(γ) process at a center-of-mass energy of 10.579 GeV with up to one-loop electroweak radiative corrections. The calculations are relevant for future precision electroweak measurements at the Belle II experiment, which is now collecting data at the SuperKEKB e+e- collider with a center-of-mass energy at the mass of the ϒ(4S) resonance. In this paper we take under full control the bremsstrahlung process at the conditions of Belle II/SuperKEKB, and the possibilities for a soft photon approach are discussed. The scale of the obtained relative corrections to the parity-violating and forward-backward asymmetries is significant and the scattering angle dependencies of the asymmetries is nontrivial. As an additional validation cross-check using an independent formulation, the calculated asymmetries are compared to results from the KK Monte Carlo generator. [ABSTRACT FROM AUTHOR]

Published
2020
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7. Two photon exchange for exclusive pion electroproduction.

Author

Afanasev, Andrei, Aleksejevs, Aleksandrs, and Barkanova, Svetlana

Subjects
*PHOTONS, *PIONS, *HADRONS, *KINEMATICS, *ELECTRON scattering
Abstract

We perform detailed calculations of two-photon-exchange QED corrections to the cross section of pion electroproduction. The results are obtained with and without the soft-photon approximation; analytic expressions for the radiative corrections are derived. The relative importance of the two-photon correction is analyzed for the kinematics of several experiments at Jefferson Lab. A significant, over 20%, effect due to two-photon exchange is predicted for the backward angles of electron scattering at large transferred momenta. [ABSTRACT FROM AUTHOR]

Published
2013
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8. Women in Physics in Canada.

Author

Li-Hong Xu, Ghose, Shohini, Milner-Bolotin, Marina, McKenna, Janis, Bhadra, Sampa, Predoi-Cross, Adriana, Dasgupta, Arundhati, Campbell, Melanie, Barkanova, Svetlana, and Steinitz, Michael

Subjects
*WOMEN in physics, *ACADEMIC achievement, *WOMEN physicists, *ENGINEERING
Abstract

While the overall climate for women physicists both in academia and industry has improved significantly over the past decade in Canada, it will be some time before women are well represented. Numbers of women in physics at all academic levels have increased, but are less than ideal at the full professor level. Organizations such as the Canadian Association of University Teachers and local initiatives are striving to minimize the socio-economic and professional gaps between women and men. The Canadian Association of Physicists, through its Committee to Encourage Women in Physics, and the Natural Sciences and Engineering Research Council are supportive and serve as catalysts, bringing together men and women to discuss and address issues concerning women in physics across Canada. [ABSTRACT FROM AUTHOR]

Published
2015
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