Two-loop matching of renormalizable operators: general considerations and applications

Low-energy effective field theories (EFT) encode information about the physics at high energies--i.e., the high-energy theory (HET). To extract this information the EFT and the HET have to be matched to each other. At the one-loop level, general results for the matching of renormalizable operators have already been obtained in the literature. In the present paper, we take a step towards a better understanding of renormalizable operator matching at the two-loop level: Focusing on the diagrammatic method, we discuss in detail the various contributions to two-loop matching conditions and compare different approaches to derive them. Moreover, we discuss which observables are best suited for the derivation of matching conditions. As a concrete application, we calculate the $\mathcal{O}\left(\alpha_t \alpha_s \right)$ and $\mathcal{O} \left(\alpha_t^2 \right)$ matching conditions of the scalar four-point couplings between the Standard Model (SM) and the Two-Higgs-Doublet Model (THDM) as well as the THDM and the Minimal Supersymmetric Standard Model (MSSM). We use the derived formulas to improve the prediction of the SM-like Higgs mass in the MSSM using the THDM as EFT.Comment: 42 pages, 4 figures, 4 ancillary files; matches version published in JHE

H2O MegaMasers: a RadioAstron success story

The RadioAstron space-VLBI mission has successfully detected extragalactic H2O MegaMaser emission regions at very long Earth to space baselines ranging between 1.4 and 26.7 Earth Diameters (ED). The preliminary results for two galaxies, NGC3079 and NGC4258, at baselines longer than one ED indicate masering environments and excitation conditions in these galaxies that are distinctly different. Further observations of NGC4258 at longer baselines will reveal more of the physics of individual emission regions.Comment: To be published in Astrophysical Masers: Unlocking the Mysteries of the Universe, IAU Symposium 336, 201

n-Hexane Bromination Using Barium Fluorobromate Ba(BrF[4])[2]

It was observed that Ba(BrF[4])[2] demonstrates a high reactivity towards n-hexane. It was found that the heating the reaction mass proceed with intensive self-heating up to 40 °C and release of elemental bromine. The GC-MS analysis showed that the main product of Ba(BrF[4])[2] interaction with n-hexane is 3-bromohexane. The optimal interaction parameters were found. The heat effect of the reaction was determined by isothermal calorimetric method, it was –1451 kJ/mole. The qualitative composition of solid precipitate was determined by EDXRF and XRD analyses. BaF[2] is formed as only solid product of the reaction between Ba(BrF[4])[2] and n-hexane. It was found that conditions of researched reaction are quite unusual for known free-radical hydrogen substitution processes in case of alkanes. Also we can conclude that Ba(BrF[4])[2] is much more soft reagent is case of interaction with alkanes in comparison with BrF[3] and it can provide more or less selective bromination of alkane unlikely to BrF[3]

Experimental evaluation of the high performance vector controlled doubly-fed induction machine with matrix converter

Виконано експериментальні випробування машини подвійного живлення (МПЖ) з керуванням від 6 кВА матричного перетворювача (МП). Всі алгоритми керування для МП і МПЖ виконувались в реальному часі, використовуючи контролер DSP, і успішно випробувані на експериментальному стенді. Експериментально продемонстровано, що алгоритми керування МП і МПЖ гарантують точне слідкування за моментом позитивної і негативної траєкторій заданого моменту за умови одиничного коефіцієнту потужності статорної ланки. Досягнено задовільних форм кривих струмів в ланці МПЖ і в ланці МП

n-Hexane Bromination Using Barium Fluorobromate Ba(BrF[4])[2]

It was observed that Ba(BrF[4])[2] demonstrates a high reactivity towards n-hexane. It was found that the heating the reaction mass proceed with intensive self-heating up to 40 °C and release of elemental bromine. The GC-MS analysis showed that the main product of Ba(BrF[4])[2] interaction with n-hexane is 3-bromohexane. The optimal interaction parameters were found. The heat effect of the reaction was determined by isothermal calorimetric method, it was –1451 kJ/mole. The qualitative composition of solid precipitate was determined by EDXRF and XRD analyses. BaF[2] is formed as only solid product of the reaction between Ba(BrF[4])[2] and n-hexane. It was found that conditions of researched reaction are quite unusual for known free-radical hydrogen substitution processes in case of alkanes. Also we can conclude that Ba(BrF[4])[2] is much more soft reagent is case of interaction with alkanes in comparison with BrF[3] and it can provide more or less selective bromination of alkane unlikely to BrF[3]

Тиреоидный статус как прогностический маркер в онкологии

Acting via a cell surface receptor on integrin v 3, thyroid hormone is pro-angiogenic and pro-proliferating. Nongenomic mechanisms of actions of the thyroid hormones at v 3 include modulation of activities of intracellular messengers: mitogen-activated protein kinase and phosphatidyl inositol-3-kinase. Thyroid hormone may increase activity of factors that support neovascularization, cell motility and cell proliferation. There are clinical and epidemiological dates about impact induced hypothyroidism on the disease and survival in cancer patients in this reviewВ обзоре представлены данные о негеномных свойствах тиреоидных гормонов (ТГ), начало которым дают внеклеточные домены белка клеточной адгезии – интегрина V 3, в результате чего происходит активация митоген-активируемой протеин-киназы, фосфотидил-инозитол-3-киназы. Конечными эффектами негеномного действия являются активация клеточной пролиферации, ангиогенеза и миграции клеток, а также повышение экспрессии тканеспецифичных генов воспаления. Также приведены данные влияния клинических исследований, в которых прослежено увеличение ответа на лечение и увеличение выживаемости у онкологических больных с индуцированным гипотиреозом