نتایج جستجو برای: واپاشی z0
تعداد نتایج: 1327 فیلتر نتایج به سال:
In this problem Z0 is a convex closed subset of a Banach spaceZ , and G and H are continuous operators from Z to the space of integrable random variables L1(Ω,F , P). The random variable Y plays the role of a benchmark outcome. For example, one may set Y = G(z̄), where z̄ ∈ Z0 is some reasonable value of the decision vector, which is currently employed in the system. The relation (2) is the stoch...
An improved non-iterative surface layer flux scheme for atmospheric stable stratification conditions
Parameterization of turbulent fluxes under stably stratified conditions has always been a challenge. Current surface fluxes calculation schemes either need iterations or suffer low accuracy. In this paper, a non-iterative scheme is proposed to approach the classic iterative computation results using multiple regressions. It can be applied to the full range of roughness status 10≤ z/z0 ≤ 105 and...
Given floating-point arithmetic with t-digit base-β significands in which all arithmetic operations are performed as if calculated to infinite precision and rounded to a nearest representable value, we prove that the product of complex values z0 and z1 can be computed with maximum absolute error |z0| |z1| 12β √ 5. In particular, this provides relative error bounds of 2−24 √ 5 and 2−53 √ 5 for I...
We discuss the case of simultaneous mixing of gauge bosons and mixing of fermions in a model independent way and for a variety of extra-fermion representations. In this context we analyze a class of lepton family violating processes, namely Z! e , Z! , Z! e , ! ee e, ! ee e, ! , ! e and ! e e in the presence of one extra neutral gauge boson, Z0, with universal, non-universal or family changin...
We present a search for excited fermions in e+p scattering at HERA using H1 data with an integrated luminosity of 37 pb 1. All electroweak decays of excited leptons, ` ! ` ; `W; `Z0 are considered. The excited quarks are searched for in the q ! q and qW channels. The analysis considers Z0 and W hadronic decays and first generation leptonic decays. No evidence for new particle production is foun...
We discuss the non-decoupling effects on the loop-induced H±W∓Z0 vertex in the general two Higgs-doublet model. The decay process H± → W±Z0 is analyzed at one-loop level and possible enhancement of the decay width is explored. We find that a novel enhancement can be realized by the Higgs non-decoupling effects with large mass difference between charged and CP-odd Higgs bosons. The branching rat...
Let G = (Ω, E) be a graph and let d be the graph distance. Consider a discrete-time Markov chain {Zt} on Ω whose kernel p satisfies p(x, y) > 0 ⇒ {x, y} ∈ E for every x, y ∈ Ω. In words, transitions only occur between neighboring points of the graph. Suppose further that (Ω, p, d) has coarse Ricci curvature at least 1/α in the sense of Ollivier: For all x, y ∈ Ω, it holds that W1(Z1 | {Z0 = x},...
In the gauge theory context, a definition of branching ratios and partial widths of unstable particles is proposed that satisfies the basic principles of additivity and gauge independence. A simpler definition, similar to the conventional one, is examined in the Z0-boson case. In order to establish contact with experiment, we show that it leads to a peak cross section that justifies the express...
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