排序方式: 共有31条查询结果,搜索用时 15 毫秒
1.
2.
A. Abduzhamilov S. A. Azimov L. Barbier R. A. Bondarenko L. P. Chernova M. M. Chernyavsky S. I. Gadzhieva K. G. Gulamov R. Holynski W. V. Jones N. Litvinenko N. S. Lukicheva D. Mirkhodzhaeva V. Sh. Navotny G. I. Orlova E. A. Ravvina N. Sh. Saidkhanov N. A. Salmanova L. N. Svechnikova M. I. Tretyakova J. P. Wefel W. Wolter B. Wosiek K. Wozniak 《Zeitschrift fur Physik C Particles and Fields》1988,40(1):1-11
Data on angular distributions of heavily ionizing and shower particles in incoherent protonnucleus collisions in emulsion at 800 GeV are reported and discussed in details. Dependence of angular distributions on the mass number of a target nucleus and on the multiplicity of charged particles is investigated. The data presented are systematically compared with results of emulsion experiments at lower energies and with predictions of the Lund Monte Carlo model FRITIOF. 相似文献
3.
L. Hand D. Petersen H. Scott K. Gottfried M. Atac A. L. Read L. Voyvodic W. Czyż B. Furmańska R. Holyński A. Jurak S. Krzywdzinski G. Nowak H. Wilczyński W. Wolter B. Wosiek R. Ball J. Kiley A. Kotlewski L. Litt J. Florian J. J. Lord R. J. Wilkes 《Zeitschrift fur Physik C Particles and Fields》1979,1(2):139-142
An experimental search is presented for the existence of intra-nuclear cascading which, for small values of the Bjorken scaling variable ω, is the only mechanism of particle multiplication in the target nucleus. Our data indicate that cascading does exist as one of the effective mechanisms of particle multiplication in μ-nucleus collisions. No significant variation of the observed multiplicity with ω is observed. 相似文献
4.
We derive the angular correlation functions between an arbitary number of partons inside a quark or gluon jet emerging from a high energy hard collision. As an application results for the correlation in the relative angle between two partons as well as the multiplicity moments of any order for partons in a sidewise angular region are calculated. At asymptotic energies the distributions of rescaled angular variables approach a scaling limit of a new type with two redundant quantities. All observables reveal the power behaviour characteristic to the fully developed selfsimilar cascade in appropriate regions of phase space. We present analytical results from the double logarithmic approximation as well as Monte Carlo results. 相似文献
5.
We show how a recently proposed supersymmetric quantum mechanics model leads to non-trivial results/conjectures on the combinatorics
of binary necklaces and linear-feedback shift-registers. Pauli’s exclusion principle plays a crucial role: by projecting out
certain states/necklaces, it allows to represent the supersymmetry algebra in the resulting subspace. Some of our results
can be rephrased in terms of generalizations of the well-known Witten index. 相似文献
6.
Back BB Baker MD Ballintijn M Barton DS Betts RR Bickley AA Bindel R Busza W Carroll A Chai Z Decowski MP García E Gburek T George N Gulbrandsen K Halliwell C Hamblen J Hauer M Henderson C Hofman DJ Hollis RS Hołyński R Holzman B Iordanova A Johnson E Kane JL Khan N Kulinich P Kuo CM Lin WT Manly S Mignerey AC Nouicer R Olszewski A Pak R Reed C Roland C Roland G Sagerer J Seals H Sedykh I Smith CE Stankiewicz MA Steinberg P Stephans GS Sukhanov A Tonjes MB Trzupek A Vale C van Nieuwenhuizen GJ 《Physical review letters》2005,94(8):082304
We have measured transverse momentum distributions of charged hadrons produced in Au+Au collisions at sqrt[s(NN)]=62.4 GeV. The spectra are presented for transverse momenta 0.25
相似文献
7.
The linear harmonic oscillator on a lattice is solved analytically. Wave functions and energy eigenvalues are expressed in terms of Mathieu functions and characteristic values of the Mathieu equation respectively. The Padé-approximant method for calculating the continuous limit of energy eigenvalues is tested. It is found that the values of approximants at infinity do not converge. A modification of the Padé method is proposed which leads to convergent series. Implications for more complicated systems are discussed. 相似文献
8.
It is shown that the existing data on the high-energy proton-nuclear emulsion interactions are consistent with the hypothesis that the ratio of the dispersion to the average multiplicity for different target nuclei is an energy independent constant, the same for all nuclei. Its value is found to be a = 0.58 ± 0.03 in agreement with the one found in proton-proton collisions. 相似文献
9.
Alver B Back BB Baker MD Ballintijn M Barton DS Betts RR Bindel R Busza W Chai Z Chetluru V García E Gburek T Gulbrandsen K Hamblen J Harnarine I Henderson C Hofman DJ Hollis RS Hołyński R Holzman B Iordanova A Kane JL Kulinich P Kuo CM Li W Lin WT Loizides C Manly S Mignerey AC Nouicer R Olszewski A Pak R Reed C Richardson E Roland C Roland G Sagerer J Sedykh I Smith CE Stankiewicz MA Steinberg P Stephans GS Sukhanov A Szostak A Tonjes MB Trzupek A van Nieuwenhuizen GJ Vaurynovich SS Verdier R 《Physical review letters》2006,96(21):212301
We present transverse momentum distributions of charged hadrons produced in Cu + Cu collisions at square root of SNN = 62.4 and 200 GeV. The spectra are measured for transverse momenta of 0.25 < pT < 5.0 GeV/c at square root of SNN = 62.4 GeV and 0.25 < pT < 7.0 GeV/c at square root of SNN = 200 GeV, in a pseudorapidity range of 0.2 < eta < 1.4. The nuclear modification factor R(AA) is calculated relative to p + p data at both collision energies as a function of collision centrality. At a given collision energy and fractional cross section, R(AA) is observed to be systematically larger in Cu + Cu collisions compared to Au + Au. However, for the same number of participating nucleons, R(AA) is essentially the same in both systems over the measured range of pT, in spite of the significantly different geometries of the Cu + Cu and Au + Au systems. 相似文献
10.
It is pointed out that the use of Bernstein moments in the comparison with data of QCD predictions for the structure functions combines the advantages of standard moments analysis and direct structure function analysis. 相似文献