نتایج جستجو برای: full face cross section
تعداد نتایج: 1032914 فیلتر نتایج به سال:
I present a calculation of threshold soft-gluon corrections to single top quark production in pp̄ collisions via all partonic processes in the t and s channels and via associated top quark and W boson production. The soft-gluon corrections are formally resummed to all orders, and finite-order expansions of the resummed cross section are calculated through next-to-next-to-next-to-leading order (N...
We assess the theoretical uncertainties on the total charm cross section. We discuss the importance of the quark mass, the scale choice and the parton densities on the estimate of the uncertainty. We conclude that due to the small charm quark mass, which amplifies the effect of varying the other parameters in the calculation, the uncertainty on the total charm cross section is difficult to
We present results for top quark production at the Tevatron including next-to-nextto-leading order (NNLO) soft-gluon corrections. We show the stability of the cross section with respect to kinematics choice and scale when the NNLO corrections are taken into account. Presented at the HEP2003 Europhysics Conference, Aachen, Germany, 17-23 July, 2003.
The propagator in the instanton background in the (−λφ4) scalar model in four dimensions is studied. Leading and sub-leading terms of its asymptotics for large momenta and its on-shell double residue are calculated. These results are applied to the analysis of the initial state and initial-final state corrections and the calculation of the next-to-leading (propagator) correction to the exponent...
We present first steps toward understanding the ultracold scattering properties of polar molecules in strong electric field-seeking states. We have found that the elastic cross section displays a quasiregular set of potential resonances as a function of the electric field, which potentially offers intimate details about the intermolecular interaction. We illustrate these resonances in a “toy” m...
We present in detail the calculation of the O(α 3 s) inclusive total cross section for the process pp → tth in the Standard Model, at the Tevatron center-of-mass energy √ s H = 2 TeV. The next-to-leading order QCD corrections significantly reduce the renormalization and factorization scale dependence of the Born cross section. They slightly decrease or increase the Born cross section depending ...
This paper reports estimates of the UK “college premium” for young graduates across successive cohorts from large cross section datasets for the UK pooled from 1994 to 2006 a period when the higher education participation rate increased dramatically. This implies that graduate supply considerably outstripped demand which ought to imply a fall in the premium. We find no significant fall for men ...
Top quark pair production cross section and properties of the top quark in p ¯ p collisions at √ s = 1.96 TeV An overview over measurements of top quark pair production in p ¯ p collisions at a center-of-mass energy of √ s = 1.96 TeV is given. Emphasis is given to measurements of the t ¯ t cross section in lepton+jets and dilepton final states with up to 5.4 fb −1 of integrated luminosity. Exam...
Using data collected during the 1992-1993 collider run at Fermilab, CDF has made measurements of correlated b quark cross section where one b is detected from the lepton from semileptonic decay and the second b is detected with secondary vertex techniques. We report on measurements of the cross section as a function of the momentum of the second b and as a function of the azimuthal separation o...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید