نتایج جستجو برای: particle energies

تعداد نتایج: 221282  

Journal: :Physical review letters 2008
Howard Georgi Yevgeny Kats

We discuss what can be learned about unparticle physics by studying simple quantum field theories in one space and one time dimension. We argue that the exactly soluble 2D theory of a massless fermion coupled to a massive vector boson, the Sommerfield model, is an interesting analog of a Banks-Zaks model, approaching a free theory at high energies and a scale-invariant theory with nontrivial an...

1999
H. Yasuhara S. Yoshinaga M. Higuchi

Why is the bandwidth of sodium observed to be na in photoemission experiments ? Abstract The experimentally predicted narrowing in the bandwidth of sodium is i the non-local self-energy effect on quasi-particle energies of the electron li energy correction is a monotonically increasing function of the wavenumber analysis of photo-emission experiments assumes the final state energies on electron...

1998
I. Vidaña A. Polls A. Ramos

Single-particle energies of Λ and Σ hyperons in several nuclei are obtained from the relevant self–energies. The latter are constructed within the framework of a perturbative many-body approach employing present realistic hyperon-nucleon interactions such as the models of the Jülich and Nijmegen groups. The effects of the non-locality and energy-dependence of the self– energy on the bound state...

1996
WOLFGANG OCHS

Recent results on the energy spectra in QCD jets are reported. Within the Modified Leading Logarithmic Approximation (MLLA) and the Local Parton Hadron Duality (LPHD) model one finds a very good description of the ee data from the lowest up to the LEP 1.5 energies. A model with fixed αs can be excluded, already in certain finite energy intervals. The fits also extrapolate smoothly into the regi...

2016
V. Gillet B. Giraud M. Rho

2014 The energies and transition properties of the even-even N = 28, 50 isotones and Z = 28, 50, 82 isotopes are calculated in the framework of the Tamm-Dancoff and Random Phase Approximation, with an effective central interaction in an extended space consisting of two quasiparticle configurations for the open shell and particle-hole configurations for the closed core. Using the results of the ...

In this article the place and capacity of combined heat and power [CHP] prediction unit wasdetermined dynamically with use of modified particle swarm optimization (MPSO). It was done inoptimization palace and with a capacity of CHP as a production resource with the aim to increasethe reliability capacity. Decrease the loss and provide the electrical and thermal energies ofindustrial city. The f...

2007
P. R. Goncharov T. Ozaki E. A. Veshchev S. Sudo

A reliable method to evaluate the probability density function for escaping atom kinetic energies is required for the analysis of neutral particle diagnostic data used to study the fast ion distribution function in fusion plasmas. Digital processing of solid state detector signals is proposed in this paper as an improvement of the simple histogram approach. Probability density function for kine...

Journal: :Physical review. C, Nuclear physics 1996
Rijsdijk Geurts Allaart Dickhoff

The fragmentation of one-nucleon knock-out strength at low energies is considered from the viewpoint of the two particle-one hole ~and two holeone particle! response propagator. The aim is to deal with particleparticle ~and hole-hole! as well as particle-hole collectivity simultaneously. This is achieved on a TammDancoff level by the so-called Faddeev approximation of the 2p1h propagator. Resul...

1999
Dmitry Ostrovsky P. N. Lebedev

Next-to-leading order correction to the one-particle inclusive cross section in the framework of high energy factorization is calculated. Numerical results for midrapidity region are compared with predictions of conventional calculations based on collinear factorization. e-mail: [email protected]

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