نتایج جستجو برای: section analysis

تعداد نتایج: 2941736  

2005
M. Beccaria

In this paper, we review the production cross section for charged and neutral Higgs bosons pairs in e+e− collisions beyond the tree level, in the framework of the Minimal Supersymmetric Standard Model (MSSM). A complete list of formulas for all electroweak contributions at the one loop level is given. A numerical code has been developed in order to compute them accurately and, in turn, to compa...

1998
I. Akushevich

The electromagnetic radiative correction to the cross section of the vector meson electroproduction is calculated. Explicit covariant formulae for the observed cross section are obtained. The dependence of the radiative correction on the experimental resolution and on the inelasticity cut is discussed. FORTRAN code DIFFRAD based on both exact (ultrarelativistic) and approximate sets of the form...

2004
K. Kutak A. M. Staśto

We investigate recently proposed nonlinear equation for the unintegrated gluon distribution function which includes subleading effects in the linear part. We obtained numerically the solution to this equation in (x, k) space and also the integrated gluon density. We show that the saturation scale which is obtained from this model is consistent with the one used in the saturation model by Golec-...

1999
A Kirk

A partial wave analysis of the centrally produced KK and ππ systems shows that the f J (1710) has J = 0. In addition, a study of central meson production as a function of the difference in transverse momentum (dP T) of the exchanged particles shows that undisputed qq mesons are suppressed at small dP T whereas the glueball candidates are enhanced and that the production cross section for differ...

1998
Eric Laenen Sven-Olaf Moch

We present the threshold resummation for the cross section for electroproduction of heavy quarks. We work to next-to-leading logarithmic accuracy, and in single-particle inclusive kinematics. We provide next-to-leading and next-to-next-to-leading order expansions of our resummed formula, and examine numerically the quality of these finite order approximations. For the case of charm we study the...

1998
Allan W. Snyder John Mitchell

We give a classical geometric optics description of incoherent solitons—those launched by a diffuse source. This method is intuitive, advances predictions such as the existence of solitons of arbitrary cross section, and importantly, it provides a simple (universal) analytical description for the incoherent solitons of any nonlinear medium. Previously, analytical results were known for the ln I...

1993
M. Jeżabek T. Teubner

We apply the Green function formalism for t − t̄ production and decay near threshold in a study of the effects due to the momentum dependent width for such a system. We point out that these effects are likely to be much smaller than expected from the reduction of the available phase space. The Lippmann–Schwinger equation for the QCD chromostatic potential is solved numerically for S partial wave...

2008
Nikolaos Kidonakis

We review the resummation of threshold logarithms for heavy quark, dijet, direct photon, and W boson production cross sections in hadronic collisions. Beyond leading logarithms the resummed cross section is sensitive to the color exchange in the hard scattering. The resummation is formulated at next-to-leading logarithmic or higher accuracy in terms of anomalous dimension matrices which describ...

Journal: :J. Parallel Distrib. Comput. 2007
Neeraj Mittal Prajwal K. Mohan

In the group mutual exclusion problem, each critical section has a type or a group associated with it. Processes requesting critical sections belonging to the same group (that is, of the same type) may execute their critical sections concurrently. However, processes requesting critical sections belonging to different groups (that is, of different types) must execute their critical sections in a...

Journal: :International Journal of Plant Genomics 2008
Grier P. Page Issa Coulibaly

Microarrays are a very powerful tool for quantifying the amount of RNA in samples; however, their ability to query essentially every gene in a genome, which can number in the tens of thousands, presents analytical and interpretative problems. As a result, a variety of software and web-based tools have been developed to help with these issues. This article highlights and reviews some of the tool...

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