نتایج جستجو برای: large cross section

تعداد نتایج: 1581422  

2008
P. Ryan

The single-top production cross section is one third that of the top-pair production cross section at the LHC. During the first year of data taking, assuming an average luminosity of 10cms and a CMS energy of 14 TeV, the determination of the major contributions to the total single-top cross section should be achievable. Comparisons between the measured cross sections and the theoretical predict...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی خواجه نصیرالدین طوسی - دانشکده مهندسی برق و کامپیوتر 1391

power transformers are important equipments in power systems. thus there is a large number of researches devoted of power transformers. however, there is still a demand for future investigations, especially in the field of diagnosis of transformer failures. in order to fulfill the demand, the first part reports a study case in which four main types of failures on the active part are investigate...

1999
A. D. Martin R. G. Roberts W. J. Stirling R. S. Thorne

W and Z bosons will be produced copiously at the LHC proton-proton collider. We study the parton distribution dependence of the total production cross sections and rapidity distributions, paying particular attention to the uncertainties arising from uncertainties in the parton distributions themselves. Variations in the gluon, the strong coupling, the sea quarks and the overall normalisation ar...

2008
J. Miller

The cross section for central diffractive Higgs production is calculated, for the LHC range of energies. The graphs for the possible mechanisms for Higgs production, through pomeron fusion and photon fusions are calculated for all possibilities allowed by the standard model. The cross section for central diffractive Higgs production through pomeron fusion, must be multiplied by a factor for the...

1999
A. Djouadi

We analyze the production of neutral Higgs particles in association with the supersymmetric scalar partners of the third generation quarks at future high–energy hadron colliders [upgraded Tevatron, LHC] and ee linear machines [including the γγ option]. In the Minimal Supersymmetric extension of the Standard Model, the cross section for the associated production of the lightest neutral h boson w...

2016
Jean-Philippe Lansberg Hua-Sheng Shao

We briefly review recent results which we have obtained in the study of J/ψ-pair production at the Tevatron and the LHC. We claim that the existing data set from CMS and D0 point at a significant double-parton-scattering contribution with an effective cross section smaller than that for jet-related observables. We have also derived simple relations involving feed-down fractions from excited sta...

2009
Daniel de Florian Massimiliano Grazzini

We present updated predictions for the total cross section for Higgs boson production by gluon–gluon fusion in hadron collisions. Our calculation includes the most advanced theoretical information available at present for this observable: soft-gluon resummation up to next-to-next-to-leading logarithmic accuracy, the exact treatment of the bottomquark contribution up to next-to-leading order, an...

1992
J. Blümlein G. J. van Oldenborgh R. Rückl

First order QCD and leading QED corrections to Higgs boson production in the channel ep → νHX ;H → bb̄ are calculated for the kinematical conditions at LEP ⊗ LHC (√s = 1360GeV) and the interesting mass range 80 < MH < 150GeV. In the DIS scheme the QCD corrections (not including the corrections to the branching ratio, which are well-known) are found to be about 1% for the total cross section and ...

2016

Article history: Received 25 July 2016 Received in revised form 9 August 2016 Accepted 9 August 2016 Available online 16 August 2016 Editor: W.-D. Schlatter A measurement of the total pp cross section at the LHC at √ s = 8 TeV is presented. An integrated luminosity of 500 μb−1 was accumulated in a special run with high-β beam optics to measure the differential elastic cross section as a functio...

2009
U. Langenfeld

We present new predictions for the total cross section of squark pair-production at Tevatron and LHC through next-to-next-to-leading order within the Minimal Supersymmetric Standard Model. The results are based on the numerically dominant soft corrections. They are exact in all logarithmically enhanced terms near threshold, include the Coulomb corrections at two loops and exact scale dependence...

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