排序方式: 共有20条查询结果,搜索用时 31 毫秒
1.
A method is proposed to identify gluon jets in the planar hadronic events recently found in e+e? annihilation. If a fast hadron is detected at a given angle θh ? 30° with respect to the axis opposite to the thrust axis, it is most probably a quark (or antiquark) fragment. An explicit formula then predicts the angle and energy of the unbiased accompanying gluon. 相似文献
2.
F. Hayot 《Nuclear Physics B》1983,214(2):253-260
It is pointed out that in order to have CP violation in horizontal, generation mixing, interactions, while the Kobayashi-Maskawa matrix itself is real, a very specific structure is required for the unitary matrices that relate weak to mass eigenstates. Implications for the structure of quark mass matrices are also discussed. 相似文献
3.
We study the quark and gluon final state in deep inelastic μ-scattering. For a hadron observed at sufficiently large angleθ h with respect to the virtual photon direction, and sufficiently large energy fractionz h , this final state dominates the cross-section. Moreover, at the same time, most events in this regime are due to the fragmentation of the quark. In such cases the position of the gluon in phase space is determined, the quark acting as a trigger for gluon jet detection. We demonstrate that in the rest frame of the final quark and gluon, the gluon is energetic and well separated from quark and target fragments. We study the boost from the lab to this frame, and give expressions for the most probable boost in terms ofθ h andz h . This study should lead to a convenient visualization of the gluon jet. 相似文献
4.
F. Hayot 《Journal of statistical physics》1992,68(3-4):557-562
I use a previously proposed algorithm, based on Lévy walks, to calculate and discuss longitudinal and transverse velocity correlations in turbulent channel flow. The general approach is that of lattice gas hydrodynamics. 相似文献
5.
We calculate, to first order in QCD, the probability for a fast hadron observed at laboratory angle θ h from the virtual photon directionq, to originate from the quark of a quark-gluon final state. Given this probability, the average gluon energy and angle with respect toq are then calculated. This approach provides a method for gluon jet direction in forthcoming experiments. 相似文献
6.
We measure, using a lattice gas algorithm, the time development of a wake behind a cylinder at Reynolds numbers equal to 30 and 60. We measure also drag at these values and determine Re90 to be the Reynolds number where vortex shedding starts. Agreement with experimental results is good. We also measure vortex shedding frequency at Re = 108 from transverse velocity and at Re = 180 from lift on the cylinder. The corresponding Strouhal numbers are obtained and discussed. 相似文献
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8.
We discuss the short range part of two-particle correlations as it results from the phase space available in cluster decay. In such an approach, certain variables emerge which should be useful to organize the data and extract interesting information. We are in particular concerned with tests of large transverse motion of clusters. 相似文献
9.
We present lattice Boltzmann simulations of flow past a cylindrical obstacle. Our study is based on the Lévy walk model of turbulence in a lattice Boltzmann model. We discuss pressure around the cylinder with laminar and turbulent incident flows, as well as the dependence of the von Karman street on the analog of integral scale in our model. 相似文献
10.
We study a general formulation of semi-inclusive two-particle rapidity correlations for short-range models. We use it to compare with the 205 GeV NAL Bubble Chamber data different decay distributions for independently emitted clusters. We also comment on non-independent cluster production and on semi-inclusive correlations between charged and neutral particles. 相似文献