458 research outputs found
Ryszard Kapustinsky – Herodot from Polesye. The Historical Portrait on Background of the Epoch
No full textСтатья посвящена одной из выдающихся личностей ХХ в. – уроженцу Пинска, известному польскому журналисту, исследователю стран третьего мира, писателю и поэту Ришарду Капустинскому. Прослеживается путь яркого творческого и профессионального развития автора книг–исследований, книг–исторических свидетельств, ставших во многих странах мира бестселлерами.Article is devoted one of outstanding persons ХХ century – to the native of Pinsk, the known polish journalist, the researcher of Third World countries, the writer and poet Rishard Kapustinsky. The way of bright creative and professional development of the author of books–researches, books – the historical evidences which have become in many countries of the world by best sellers is traced
Рышард Капусцінскі – Герадот з Палесся. Гістарычны партрэт на фоне эпохі.
No full textСтатья посвящена одной из выдающихся личностей ХХ в. – уроженцу Пинска, известному польскому журналисту, исследователю стран третьего мира, писателю и поэту Ришарду Капустинскому. Прослеживается путь яркого творческого и профессионального развития автора книг– исследований, книг–исторических свидетельств, ставших во многих странах мира бестселлерами. = Article is devoted one of outstanding persons ХХ century – to the native of Pinsk, the known polish journalist, the researcher of Third World countries, the writer and poet Rishard Kapustinsky. The way of bright creative and professional development of the author of books–researches, books – the historical evidences which have become in many countries of the world by best sellers is traced
Рышард Капусцінскі – Герадот з беларускага Палесся
No full textThe article is dedicated to one of the most outstanding persons of 20* and 21* centuriesto the native of Pinsk, the known polish journalist, the researcher of Third World countries, the writer andpoet Rishard Kapustinsky The way of bright creative and professional development of the author of bookt-researches, books - the historical evidences which have become bestsellers in many countries of the world is traced.Артыкул прысвечаны одной з аыдатнейшых постацей XX і XXI стст. - ураджэнцу Пінска, вядамаму паяьскаму журналісту, даследчыку краін «Трэцяга свету», пісьменніку і поэту Рышарду Капусцінскаму Прасочваецца шяях яркага творчага і прафесійнага развіцця аўтара кніг-дасяедаванняў, кніг - гістарычных сведчанняў, стаўшых у многіх краінах свету бестсеяерамі
Measurement of J ψ and ψ production in 800 GeV/c proton-gold collisions
No full textWith a data sample containing 1.1×105 J/+- decays reconstructed with 16 MeV/c2 rms mass resolution, we have measured the differential cross sections versus Feynman-x, rapidity, and pT for the production of J/ and in 800 GeV/c p-Au collisions. Our results are compared with leading-order QCD predictions and with previous measurements. While the shapes of the cross sections are in qualitative agreement with QCD predictions, the magnitudes disagree by factors of 7 (J/) and 25 (). Assuming an appropriate form for the differential cross sections in regions not measured we derive a total J/ production cross section (p+NJ/+X)=442288 nb/nucleon and a (model-dependent) total cross secton (p+N+X)=75522 nb/nucleon. For J/ produced at central rapidity, d(p+NJ/+X)/dyy=0=230546 nb/nucleon.</p
Nuclear dependence of J/ψ production by 800 GeV/c protons near xF=0
No full textThe nuclear dependence for 800 GeV/c proton production of J/ψ's has been measured near xF=0. $J/ psi-'s produced from beryllium, carbon, and tungsten targets were detected with the Fermilab E789 pair spectrometer. These data extend the results from E772 down to the range xF=-0.1 to 0.1 and indicate a gradually increasing suppression as xF falls below zero.</p
Production of J/ψ at large xF in 800 GeV/c p-copper and p-beryllium collisions
No full textThe differential cross sections dσ/dxF for J/ψ produced inclusively in 800 GeV/c p-Cu and p-Be collisions have been measured in the kinematic range 0.30≤xF≤0.95 through the decay mode J/ψ→μ+μ-. They are compared with the predictions of the semilocal duality model for several sets of parton density functions. No evidence for a suggested intrinsic charm contribution to the cross section is observed. The ratio of the differential cross sections for Cu and Be targets confirms the suppression of J/ψ production in heavy nuclei at large xF.</p
Inclusive J, ' and Production in Hadronic Z Decays
No full textWe report on measurements of the inclusive production of J, and mesons in hadronic Z decays, based on 3.2 million hadronic events collected using the L3 detector at LEP. The J and mesons are reconstructed through their decays into lepton pairs, while the mesons are reconstructed via the decay mode . The measured branching fractions are: \begin{eqnarray*} \mathrm{Br(Z \rightarrow J + X)} &=& (3.40 \pm 0.23\:(\mathrm {stat.}) \pm 0.27\:(\mathrm {sys.}))\,\times\,10^{-3} \\ \mathrm{Br(Z \rightarrow \psi' + X)} &=& (1.6 \pm 0.5\:(\mathrm {stat.}) \pm 0.3\:(\mathrm {sys.}))\,\times\,10^{-3} \\ \mathrm{Br(Z \rightarrow \chi_{c1} + X)} &=& (2.7 \pm 0.6\:(\mathrm {stat.})\pm 0.5\:(\mathrm {sys.}))\, \times\,10^{-3}. \\ \end{eqnarray*} In the absence of a clear signal, the upper limit at 90\% C.L. is set: \mathrm{ Br(Z \rightarrow \chi_{c2} + X) 3.2\,\times\,10^{-3}}. \end{document
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L3 physics at the Z resonance and a search for the Higgs particle
No full textThis is the final report of a three-year, Laboratory-Directed Research and Development (LDRD) project at the Los Alamos National Laboratory. Electroweak interactions were studied using the L3 Detector on the Large Electron-Positron Collider (LEP) at the European Center for Nuclear Study (CERN). The specific physics studied utilized the Silicon Microvertex Detector (SMD) of L3, which Los Alamos had previously played a major role in proposing, designing, constructing, and commissioning. This detector enabled L3 to investigate short-lived mesons containing b-quarks
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Feasibility of detecting B. -->. h/sup plus/h/sup minus/ in a fixed-target experiment
No full textWe discuss a proposal to measure two-body, two-prong decays of neutral B mesons and ..lambda../sub b/ in an 800 GeV fixed-target experiment. We expect to obtain a large sample (/approximately/10/sup 3/ events) of these decays if the branching ratios are /approximately/5 /times/ 10/sup /minus/5/. 23 refs., 2 figs., 3 tabs
Search for Exclusive B Decays to J and or with the L3 Detector
No full textA search for exclusive decays of \ensuremath{\mathrm{B_d^0}} and \ensuremath{\mathrm{B_s^0}} mesons has been performed in the channels \ensuremath{\mathrm{B_d^0}\rightarrow\mathrm{J}\eta},\,\, \ensuremath{\mathrm{B_s^0}\rightarrow\mathrm{J}\eta},\,\, \ensuremath{\mathrm{B_d^0}\rightarrow\mathrm{J}\pi^0} and \ensuremath{\mathrm{B_s^0}\rightarrow\mathrm{J}\pi^0}. The data sample consisted of more than three and half million hadronic \ensuremath{\mathrm {Z}} decays collected by the L3 experiment at LEP from 1991 through 1995. No candidate events have been observed for any of the modes thus determining upper limits at 90\% confidence level: on \mathrm{Br}(\ensuremath{\mathrm{B_d^0}\ rightarrow\mathrm{J}\pi^0)} and the first experimental limits: \begin{eqnarray*} \mathrm{Br}(\ensuremath{\mathrm{B_d^0}\rightarrow \mathrm{J}\eta}) & < & 1.2\times 10^{-3},\\ \mathrm{Br}(\ensuremath{\m athrm{B_s^0}\rightarrow\mathrm{J}\eta}) & < & 3.8\times 10^{-3},\\ \mathrm{Br}(\ensuremath{\mathrm{B_s^0}\rightarrow\mathrm {J}\pi^0}) & < & 1.2\times 10^{-3}.\\ \end{eqnarray*
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