排序方式: 共有59条查询结果,搜索用时 0 毫秒
31.
P. C. Bosetti H. Gr?ssler D. Lanske R. Schulte K. Schultze G. T. Jones R. W. L. Jones B. W. Kennedy S. W. O'Neale C. Geich-Gimbel B. Nellen B. Wünsch H. Klein D. R. O. Morrison H. Wachsmuth E. Simopoulou A. Vayaki K. W. J. Barnham F. Hamisi D. B. Miller M. M. Mobayyen S. Wainstein M. Aderholz D. Hantke E. Hoffmann U. F. Katz J. Kern N. Schmitz W. Wittek C. Albajar J. R. Batley G. Myatt D. H. Perkins D. Radojicic P. Renton S. Saitta T. Bolognese J. Velasco D. Vignaud F. W. Bullock S. Burke WA WA Collaboration 《Zeitschrift fur Physik C Particles and Fields》1990,46(3):377-385
The transverse momentum distributions of hadrons produced in neutrino-nucleon charged current interactions and their dependence onW are analysed in detail. It is found that the components of the transverse momentum in the event plane and normal to it increase withW at about the same rate throughout the availableW range. A comparison withe + e ? data is made. Studies of the energy flow and angular distributions in the events classified as planar do not show clear evidence for high energy, wide angle gluon radiation, in contrast to the conclusion of a previous analysis of similar neutrino data. 相似文献
32.
P. Marage P. P. Allport N. Armenise J. P. Baton M. Berggren W. Burkot M. Calicchio T. Coghen A. M. Cooper-Sarkar O. Erriquez J. Guy P. O. Hulth G. T. Jones E. Matsinos D. R. O. Morrison M. Neveu M. A. Parker J. Sacton R. A. Sansum N. Schmitz E. Simopoulou K. Varvell A. Vayaki W. Venus H. Wachsmuth W. Wittek BEBC WA Collaboration 《Zeitschrift fur Physik C Particles and Fields》1989,43(4):523-526
The coherent production of π+ mesons by charged current neutrino interactions on neon nuclei in BEBC is compared to the predictions of the PCAC hypothesis and the meson dominance model. Good agreement is observed. 相似文献
33.
T. A. Armstrong I. J. Bloodworth J. N. Carney R. Childs B. R. French B. Ghidini J. B. Kinson V. Lenti A. Palano G. Vassiliadis O. Villalobos Baillie M. F. Votruba G. Zito R. Zitoun WA Collaboration 《Zeitschrift fur Physik C Particles and Fields》1987,35(2):167-171
In a search for glueballs and exotic states decaying into baryons and antibaryons we have investigated the production of baryon antibaryon pairs produced centrally in the reactions π+/pp → π+/p(X 0)p at 85 GeV/c. In particular, channels whereX 0 goes to \(p\bar p,p\bar p\pi ^ + \pi ^ - ,p\bar p2\pi ^ + 2\pi ^ - \) and \(\Lambda \bar \Lambda \) have been observed. No significant new structure is observed in the mass spectra. 相似文献
34.
The WA Collaboration 《The European Physical Journal C - Particles and Fields》2005,41(3):287-296
The azimuthal distributions of photons and charged particles with respect to the event plane are investigated as a function of centrality in 208Pb + 208Pb collisions at 158
GeV/c in the WA98 experiment at the CERN SPS. The anisotropy of the azimuthal distributions is characterized using a Fourier analysis. For both the photon and charged particle distributions the first two Fourier coefficients are observed to decrease with increasing centrality. The observed anisotropies of the photon distributions compare well with the expectations from the charged particle measurements for all centralities.Received: 22 May 2004, Revised: 14 April 2005, Published online: 4 May 2005PACS:
25.75.Dw 相似文献
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G. Gerbier D. Bertrand J. Guy P. Marage M. Aderholz N. Armenise J. H. Bartley J. P. Baton V. Brisson R. Belusevic D. Brou F. W. Bullock M. Calicchio E. F. Clayton T. Coghen A. M. Cooper-Sarkar O. Erriquez P. J. Fitch P. O. Hulth G. T. Jones P. Kasper H. Klein C. Kochowski M. Lagraa S. Leighton-Davis R. Middleton D. B. Miller M. M. Mobayyen D. R. O. Morrison M. Neveu S. Nuzzo S. O'Neale M. A. Parker P. Petiau J. Sacton R. A. Sansum N. Schmitz E. Simopoulou M. Talebzadeh K. Varvell C. Vallee A. Vayaki W. Venus H. Wachsmuth J. Wells W. Wittek E. Zevgolatakos BEBC WA Collaboration 《Zeitschrift fur Physik C Particles and Fields》1985,29(1):15-28
A sample of over 25,000 fully measured neutrino and antineutrino charged current interactions in BEBC includes 192 dilepton candidates. The prompt signal after subtraction of background is 41 ±7µ+ e -, 35±7µ+µ- events from \(\bar v\) interactions, and 32±7µ-µ+ events from ν interactions. There are 2 trileptons, µ-µ- e + and µ-µ-µ+. Results are compared with other experimental data and with the standard model. Limits to prompt like sign µ+ e +, µ+µ+ and µ-µ- signals are given and compared with other experiments and with theoretical calculations. 相似文献
38.
ZHU XiaoSong CHENG Liang LU Lin & TENG Bin State Key Laboratory of Coastal Offshore Engineering Dalian University of Technology Dalian China School of Civil Resource Engineering The University of Western Australia Perth WA Australia Centre for Deepwater Engineering Dalian 《中国科学:物理学 力学 天文学(英文版)》2011,(3)
The Moving Particle Semi-implicit (MPS) method performs well in simulating violent free surface flow and hence becomes popular in the area of fluid flow simulation. However, the implementations of searching neighbouring particles and solving the large sparse matrix equations (Poisson-type equation) are very time-consuming. In order to utilize the tremendous power of parallel computation of Graphics Processing Units (GPU), this study has developed a GPU-based MPS model employing the Compute Unified Device Ar... 相似文献
39.
Robert A.Dagle Jianli Hu Susanne B.Jones Wayne Wilcox John G.Frye James F.White Juyuan Jiang Yong Wang 《天然气化学杂志》2013,(3):368-374
This paper reports an experimental study on catalytic conversion of carbon dioxide to methanol,ethanol and acetic acid.Catalysts having different catalytic functions were synthesized and combined in different ways to enhance the selectivity to desired products.The combined catalyst system possessed the following functions:methanol synthesis,Fischer-Tropsch synthesis,water-gas-shift and hydrogenation.Results showed that the methods of integrating these catalytic functions played an important role in achieving the desired product selectivity.We speculate that if methanol synthesis sites were located adjacent to the C-C chain growth sites,the formation rate of C2 oxygenates would be enhanced.The advantage of using a high temperature methanol catalyst PdZnAl in the combined catalyst system was demonstrated.In the presence of PdZnAl catalyst,the combined catalyst system was stable at 380°C.It was observed that,at high temperature,kinetics favored oxygenate formation.The results implied that the process can be intensified by operating at high temperature using Pd-based methanol synthesis catalyst.Steam reforming of the byproduct organics was demonstrated as a means to provide supplemental hydrogen.Preliminary process design,simulation,and economic analysis of the proposed CO2 conversion process were carried out.Economic analysis indicates how ethanol production cost was affected by the price of CO2 and hydrogen. 相似文献
40.
The current status of the search for localized domains of disoriented chiral condensates (DCC) in Pb+Pb collisions at 158A GeV/c are presented. A new method based on the discrete wavelet transformation (DWT) technique along with an analysis of correlation between charged and neutral particles has been used for the search of localized DCC domains. We show that both the methods indicate the presence of non-statistical fluctuations in data. 相似文献