Forward observables at RHIC, the Tevatron run II and the LHC

We present predictions on the total cross sections and on the ratio of the real part to the imaginary part of the elastic amplitude (rho parameter) for present and future pp and pbar p colliders, and on total cross sections for gamma p -> hadrons at cosmic-ray energies and for gamma gamma -> hadrons up to sqrt(s)=1 TeV. These predictions are based on a study of many possible analytic parametrisations and invoke the current hadronic dataset at t=0. The uncertainties on total cross sections, including the systematic theoretical errors, reach 1% at RHIC, 3% at the Tevatron, and 10% at the LHC, whereas those on the rho parameter are respectively 10%, 17%, and 26%.Comment: 11 pages, 2 figures, LaTeX, presented at the Second International "Cetraro" Workshop & NATO Advanced Research Workshop "Diffraction 2002", Alushta, Crimea, Ukraine, August 31 - September 6, 200

Benchmarks for the Forward Observables at RHIC, the Tevatron-run II and the LHC

We present predictions on the total cross sections and on the ratio of the real part to the imaginary part of the elastic amplitude (rho parameter) for present and future pp and pbar p colliders, and on total cross sections for gamma p -> hadrons at cosmic-ray energies and for gamma gamma-> hadrons up to sqrt{s}=1 TeV. These predictions are based on an extensive study of possible analytic parametrisations invoking the biggest hadronic dataset available at t=0. The uncertainties on total cross sections, including the systematic errors due to contradictory data points from FNAL, can reach 1.9% at RHIC, 3.1% at the Tevatron, and 4.8% at the LHC, whereas those on the rho parameter are respectively 5.4%, 5.2%, and 5.4%.Comment: 11 pages, 2 figures, 4 tables, RevTeX

Выгоды безбалластной конструкции пути для крупных транспортных объектов

[For the English abstract and full text of the article please see the attached PDF-File (English version follows Russian version)].ABSTRACT The article assesses the possibility of using a ballastless (or slab) track design (BTD) in implementation of large transport facilities in the city. BTD is the only alternative to a traditional track on ballast. Such an option has a number of advantages, but at the same time, certain shortcomings that restrain its mass application today. Based on foreign experience and comparison of two designs (track on ballast and BTD), taking into account costs for repair and current maintenance, the authors offer their understanding of economic arguments and benefits derived from operation of the ballastless track. Keywords: railway transport, track superstructure, ballastless structure, high-speed traffic, costs, payback, economic effect.Текст аннотации на англ. языке и полный текст статьи на англ. языке находится в прилагаемом файле ПДФ (англ. версия следует после русской версии).В статье оценивается возможность использования безбалластной конструкции пути (БКП) при реализации крупных транспортных объектов в черте города. БКП является единственной альтернативой традиционному пути на балласте. Такой вариант обладает рядом преимуществ, но вместе с тем и определенными недостатками, сдерживающими сегодня его массовое применение. Основываясь на зарубежном опыте и сравнении двух конструкций (путь на балласте и БКП), с учётом расценок на ремонты и текущее содержание авторы предлагают свое понимание экономических аргументов и выгод, получаемых от эксплуатации безбалластного пути

Measurement of the e+e−→K+K−π+π−e^+e^- \to K^+K^-\pi^+\pi^- cross section with the CMD-3 detector at the VEPP-2000 collider

The process $e^+e^- \to K^+K^-\pi^+\pi^-$ has been studied in the center-of-mass energy range from 1500 to 2000\,MeV using a data sample of 23 pb$^{-1}$ collected with the CMD-3 detector at the VEPP-2000 $e^+e^-$ collider. Using about 24000 selected events, the $e^+e^- \to K^+K^-\pi^+\pi^-$ cross section has been measured with a systematic uncertainty decreasing from 11.7\% at 1500-1600\,MeV to 6.1\% above 1800\,MeV. A preliminary study of $K^+K^-\pi^+\pi^-$ production dynamics has been performed

Study of the process e+e−→ppˉe^+e^-\to p\bar{p} in the c.m. energy range from threshold to 2 GeV with the CMD-3 detector

Using a data sample of 6.8 pb$^{-1}$ collected with the CMD-3 detector at the VEPP-2000 $e^+e^-$ collider we select about 2700 events of the $e^+e^- \to p\bar{p}$ process and measure its cross section at 12 energy ponts with about 6\% systematic uncertainty. From the angular distribution of produced nucleons we obtain the ratio $|G_{E}/G_{M}| = 1.49 \pm 0.23 \pm 0.30$

P-P Total Cross Sections at VHE from Accelerator Data

Comparison of P-P total cross-sections estimations at very high energies - from accelerators and cosmic rays - shows a disagreement amounting to more than 10 %, a discrepancy which is beyond statistical errors. Here we use a phenomenological model based on the Multiple-Diffraction approach to successfully describe data at accelerator energies. The predictions of the model are compared with data On the basis of regression analysis we determine confident error bands, analyzing the sensitivity of our predictions to the employed data for extrapolation. : using data at 546 and 1.8 TeV, our extrapolations for p-p total cross-sections are only compatible with the Akeno cosmic ray data, predicting a slower rise with energy than other cosmic ray results and other extrapolation methods. We discuss our results within the context of constraints in the light of future accelerator and cosmic ray experimental results.Comment: 26 pages aqnd 11 figure

ИССЛЕДОВАНИЕ ВОЗМОЖНОСТЕЙ КОМПЬЮТЕРНОГО АВТОМАТИЗИРОВАННОГО АНАЛИЗА ДЛЯ ЗАДАЧ ЭФФЕКТИВНОЙ ДИАГНОСТИКИ ДИССЕМИНИРОВАННОГО РАКА ПРЕДСТАТЕЛЬНОЙ ЖЕЛЕЗЫ

The aim. The possibility of applying a unified methodological approach to the problems of pattern recognition and information modeling of the process of diagnosis of various forms of malignant tumors with the help of CAD-analysis of medical images is substantiated. Material and methods. A retrospective analysis of medical histories and results of scintigraphy from 168 patients with newly diagnosed disseminated prostate cancer treated on the basis of the Khabarovsk regional clinical Oncology center in the period from 2003 to 2016. Considered original methodological approaches to the study of metastatic lesion of the skeleton using computer-aided analysis of planar osteoscintigraphy. Results. Volume of lesions of the skeleton were calculated with the use of computer systems for automated diagnostics based on the principles of image recognition and has the features of expert analysis. and the degree of tumor differentiation are independent of each other predictors of high risk of death in patients with disseminated prostate cancer. The high efficiency of CAD-analysis in the evaluation of bone metastatic index for this form of malignant advanced tumors is shown.Цель. Обоснована возможность применения единого методологического подхода к проблемам распознавания образов и информационного моделирования процесса диагностики различных форм злокачественных опухолей с помощью CAD-анализа медицинских изображений. Материал и методы. Проведен ретроспективный анализ историй болезни и результатов сцинтиграфии 168 пациентов с впервые диагностированным диссеминированным раком предстательной железы, пролеченных на базе Хабаровского краевого клинического онкологического центра в период с 2003 по 2016 год. Рассмотрены оригинальные методологические подходы к изучению метастатического поражения скелета с использованием компьютерного анализа планарной остеосцинтиграфии. Результаты. Объем поражений скелета рассчитан с использованием компьютерных систем автоматизированной диагностики на основе принципов распознавания образов и имеет особенности экспертного анализа. а степень дифференцировки опухолей не зависят друг от друга и являются предикторами высокого риска смерти у больных диссеминированным раком предстательной железы. Показана высокая эффективность CAD-анализа при оценке костного метастатического индекса для данной формы злокачественных опухолей