Search academic texts

Registration Number

0216U010047, 0112U003213 , R & D reports

Title

"Patterns of excitation and decay of heavy hadrons at relativistic energies."

popup.stage_title

Head

Pugatch Valery Mykhailovitch,

Registration Date

25-10-2016

Organization

Scientific Center "Institute for Nuclear Research" of National Academy of Sciences of Ukraine

popup.description2

In the Department of High Energy Physics (Head of department. Dr.Sci. Filin VM) within the research on "Patterns of excitation and decay of heavy hadrons at relativistic energies." Step 3: "Study channel rare decay of heavy mesons. Modernization CPM increased by two orders luminosity experiment. Development of radiation-resistant detector modules to track Kremniyovoyi Stations (SVM) " In 2014 yielded the following key results: This was found two new baryon resonances with heavy b-quarks in their composition in proton-proton collisions at energies of 7 and 8 TeV experiment LHCb (Large Hadron Collider, CERN). An analysis of these two-muon final states defined cross sections in the generation of heavy-mesons, in addition to which b-quark is amazing s-quark or d-quark. The estimated probability of the standard model of decay of mesons in two-muon channel is extremely small. LHCb measured in fractions of cross sections B (Bs > ? + ? -) = (2.9 +/- 0.7) ? 10-9 and B (B0 > ? + ? -) = (3.6 +/- 1.5) ? 10-10, confirmed in an experiment CMS (CERN) set a new upper limit of the probability of physical processes beyond the Standard Model. According to the results of other studies using the LHCb detector, part of which is established in INR Sciences of Ukraine system of radiation monitoring internal tracker, in 2014 published 82 scientific articles on High Energy Physics. (O.Yu.Ohrimenko, owl VM, VM Yakovenko) In the experiment D0 (Tevatron, FNAL) continued work on the reconstruction of the mass of the top quark with a complete set of experimental data obtained in proton-antyprotonnyh collisions with energy at the energy 1.96 TeV. Done top quark mass measurement in the method dileptonnomu channel matrix elements. The purpose of this analysis is to measure the mass of the top quark for all available statistics (~ 10 fb-1) with reduced systematic error. (MS Borisov) Using standard software (SOFTSUSY, SDECAY) calculated mass spectrum and differential cross sections superchastynok formation, including Skvarko and hlyuino. (TV Obihod) Ongoing development Silicon track system for experiment SVM (FAIR, Darmstadt). Created infrastructure for quality testing mikrostripovyh silicon detectors, including automated visual inspection of the sensors and their characterization by measuring electrical characteristics. The development and testing of open cooling system with 200 watts. The efficiency of charge collection of prototypes mikrostripovyh sensors exposed to 2 * 1014 1-MeV neq / cm2. The conclusion of the equally level radiation tolerance sensors produced in Japan and Germany. The program, which simulates a complete cycle of physical processes caused by charged particles that pass through the silicon sensor. The resulting distributions for the size of clusters at different angles tracks. (VA nods, AJ Lymanets, GM Malygina, Ye.L.Momot, YV Panasenko, VM Filin, M. Pugach, Y. Sorokin) Designed and manufactured 256-channel micro positionally sensitive detector system of registration of X-ray based semiconductor micro stripovyh detectors, created and studied in NRI National Academy of Sciences of Ukraine, and commercially available reader electronics. The system is tested on a laser stand at INR NAS of Ukraine and the installation of high-speed X-ray analysis IPM NAS of Ukraine with the observation of phase transitions in metals during heating and cooling by measuring the change in position of the diffraction peaks in the angular distribution of X-rays scattered in the sample. (AS Kovalchuk VA nods, V.M.Militsiya, VM Filin,) For experiments TANDEM generator NRI NASU research on the correlation of many nuclear reactions created a new experimental setup based on hybrid micro-pixel detector TimePix (CERN). Done cinematically complete study of reaction 11B (p, 3?) at ??different energies of protons. Granulation energy and time-sensitivity detectors Timepix to measure spatial and energy distribution of the products of nuclear reactions at high resolution on the corners and energy. Studied the phenomenon of interference due to identity alpha particles generated at the excitation and decay of nuclei 8Be * (2.9 MeV). The software to calculate the experimental conditions for observing the interference of short-lived states of nuclei and analysis of the energy spectra of end products, taking into account the constructive or destructive interference. (VA nod, AS Kovalchuk, A. Okhrimenko, EA Petrenko VM Filin, M. Pugach,) With the use of metal mikrodetektoriv and special collimators, developed and manufactured in INR NAS of Ukraine, studied the characteristics of beams heavy-ion therapeutic center (m. Heidelberg, Germany) for the purposes of fractionated hadronic therapy (together with laboratory IMNC (IN2P3, National Center for Scientific Research, Orsay ). For the first time demonstrated the possibility of measuring the spatial distribution of the dose of many hadron beams in real time. (Ilyukhin AA, AS Kovalchuk EL Momot, VM Filin, Yu Sorokin, VM Yakovenko, Prezado J., J. Martinez).5481

Product Description

popup.authors

Ілюхіна А.О.
Борисова М.С.
Вербицький А.В.
Ківа В.О.
Ковальчук О.С.
Костюк І.О.
Лиманець А.О.
Міліція В.М.
Малигіна Г.М.
Обіход Т.В.
Охріменко О.Ю.
Панасенко Я.В.
Петренко Є.О.
Пугач М.В.
Пугач Т.В.
Сорокін Ю.Є.
Сторожик Д.І.
Теклішин М.В.
Чаус А.В.
Яковенко В.М.

popup.nrat_date

2020-04-02