نتایج جستجو برای: large cross section
تعداد نتایج: 1581422 فیلتر نتایج به سال:
At the Large Hadron Collider (LHC), the CP-even Higgs bosons (h and H) of the Minimal Supersymmetric Standard Model (MSSM) will be searched for mainly through their two-photon decay. We present a detailed analysis of the production and two-photon decay of the CP-even Higgs bosons of MSSM at the LHC by taking into account all the parameters of the model, especially the bilinear parameter μ and t...
Next-to-leading order QCD corrections to top quark spin correlations at hadron colliders: the reactions q ¯ q → t ¯ t(g) Abstract: Future hadron collider experiments are expected to record large to huge samples of t ¯ t events. The analysis of these data with respect to t ¯ t spin-spin correlations requires precise predictions of the production of these quark pairs in a general spin configurati...
At the Large Hadron Collider (LHC), the CP-even Higgs bosons (h and H) of the Minimal Supersymmetric Standard Model (MSSM) will be searched for mainly through their two-photon decay. We present a detailed analysis of the production and two-photon decay of the CP-even Higgs bosons of MSSM at the LHC by taking into account all the parameters of the model, especially the bilinear parameter μ and t...
in this paper, a novel approximate solution to determine the nusselt number for thermally developed, slug (low-prandtl), laminar, single phase flow in channels of arbitrary cross section is presented. using the saint-venant principle in torsion of beams, it is shown that the thermally developed nusselt number for low-prandtl flow is only a function of the geometrical parameters of the channel c...
We calculate the cross section for the dissociation of J/ψ by kaons within the framework of a meson exchange model. We find that, depending on the values of the coupling constants used, the cross section can vary from 5 mb to 30 mb at √ s ∼ 5 GeV. In relativistic heavy ion collisions J/ψ suppression has been recognized as an important tool to identify the possible phase transition to quark-gluo...
We investigate some aspects and consequences of the extrema bounds for the soft Pomeron intercept, recently determined by means of global fits to pp and p̄p total cross section data at both accelerator and cosmic-ray energy regions (scattering data). We also examine the effects of the secondary Reggeons by introducing fitted trajectories from Chew-Frautschi plots (spectroscopy data) and determin...
We show that a generalized Regge behaviour, Im F (s, t) ≃ Φ(t)(log s/ˆ s) ν(t) (s/ˆ s) α P (t) , for |t| < |t0|, s → ∞ where Φ(t) ≃ e bt , αP (t) ≃ αP (0) + α ′ P (0)t, and t0 is the first zero of αP (t), αP (t0) = 0, implies that the corresponding cross section is bounded by σtot(s) < (Const.) × log s/ˆ s. This growth, however, is not sufficient to fit the experimental cross sections. If, inst...
The neutral Higgs pair production at LHC is studied in the MSSM, the large extra dimension model and the Randall-Sundrum model, where the total cross section can be enhanced by more than one order of magnitude, compared to that in the SM. We have obtained the p T , invariant mass and rapidity distributions. Both of the extra-dimensional cases show distinctive features: The distribution shapes a...
Measurements of the production cross section of a Z boson in association with jets in proton–proton collisions at √ s = 13 TeV are presented, using data corresponding to an integrated luminosity of 3.16 fb−1 collected by the ATLAS experiment at the CERN Large Hadron Collider in 2015. Inclusive and differential cross sections are measured for events containing a Z boson decaying to electrons or ...
از آنجائیکه فاکتور تجمع نحوه توزیع الیاف در سطح مقطع نخ را بیان می کند در این تحقیق این فاکتور مورد مطالعه قرار گرفت روش مورد استفاده جهت اندازه گیری فاکتور تجمع الیاف در سطح مقطع نخ پردازش تصویر است. که در امر استخراج اطلاعات از سطح مقطع بسیار موثر می باشد دقت و سرعت از خصوصیات بارز این روش است. تاکنون روشهای مطرح شده برای محاسبه فاکتور تجمع این فاکتور را برای الیاف با مقطع دایره ای محاسبه کرد...
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