نتایج جستجو برای: full face cross section
تعداد نتایج: 1032914 فیلتر نتایج به سال:
We compute the production cross section of a pair of Standard Model Higgs bosons at the LHC at next-to-leading order in QCD, including corrections in inverse powers of the top quark mass. We calculate these power corrections through O(1/M8 t ) and study their relevance for phenomenology of the double Higgs production. We find that power corrections are significant, even for moderate values of p...
The photoelectrons emitted by lead atoms exposed to circularly-polarised vuv radiation are partially spin polarised. Unlike the photoionisation cross section, the measured polarisation does not show autoionisation resonances as a function of wavelength. The polarisation and the known cross section results together yield new absorption data, which can be compared with the oscillator strengths of...
Results on elastic electroproduction of ρ mesons are presented for a photon virtuality in the range 1 < Q < 60 GeV and for a hadronic centre of mass energy in the range 30 < W < 140 GeV. The shape of the (ππ) mass distribution is discussed and measurements of the cross section dependences on Q, W and t (the four-momentum transfer squared to the proton) are presented. The full set of ̺ spin densi...
The first four terms of an expansion in M H /M t of the total inclusive cross section for Higgs production in gluon fusion are evaluated through next-to-next-to-leading order QCD. A reliable and precise approximation of the full top mass dependence at NNLO is derived and compared to the frequently used heavy-top limit. It is found that both results agree numerically to better than 0.5% in the H...
The subject of Higgs boson production by double pomeron exchange has drawn noticeable interest in recent years [1]. The published theoretical estimates of the cross-section based on different approaches are inconsistent and thus do not give reliable predictions needed for future experiments. One way to reduce this ambiguity is to study other double pomeron exchange processes and compare them wi...
OBJECTIVE To develop an accurate method for performing histopathologic analysis for a full cross-section of cortical bone within 2 to 3 hours. METHODS Microwave technology was used to augment and to more rapidly perform fixation and decalcification of cortical bone. RESULTS Using the methods described, slides suitable for histopathologic analyses regarding the presence or absence of maligna...
Measurements of the differential and double-differential Drell–Yan cross sections in the dielectron and dimuon channels are presented. They are based on proton– proton collision data at √ s = 8 TeV recorded with the CMS detector at the LHC and corresponding to an integrated luminosity of 19.7 fb −1. The measured inclusive cross section in the Z peak region (60–120 GeV), obtained from the combin...
A chemical reaction model, suitable for use in the Direct Simulation Monte Carlo (DSMC) method, is developed to simulate hypervelocity collisions of an important reaction in atmospheric-jet interactions O(3P)+HCl(1Σ ) OH(2Π)+Cl(2P). The model utilizes the Quasi-Classical Trajectory (QCT) method with two potential energy surfaces (PES), new benchmark triple A and A surfaces and London-Eyring-Pol...
Context. The AMS-02 and HELIX experiments should soon provide 10 Be/ 9 Be cosmic-ray data of unprecedented precision. Aims. We propose an analytical formula to quickly accurately determine L from these data. Methods. Our is validated against the full calculation performed with propagation code USINE . compare constraints on set by Be/B Be, relying updated sets production cross-sections. Results...
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