نتایج جستجو برای: inelastic reaction
تعداد نتایج: 425585 فیلتر نتایج به سال:
Order αs QCD corrections to structure functions containing heavy quarks and to single heavy quark inclusive distributions in deep-inelastic electroproduction ( i . e. , γ∗(q)+P (p)→ Q(p1)+ X where X stands for any final hadronic state allowed by quantum-number conservation and P (p) is a proton of momentum p ) were recently published in [1] and [2], respectively. By combining the next-to-leadin...
The interpretation of the nuclear cross sections measured using accelerator neutrino beams involve severe difficulties, arising primarily from average over incoming flux. broad energy distribution beam particles hampers determination transfer to target, knowledge which is needed pin down dominant reaction mechanism. Overcoming this problem requires development a theoretical approach suitable de...
We present a new analysis of the E772 and E866 experiments on the nuclear dependence of Drell-Yan (DY) lepton pair production resulting from the bombardment of 2H, Be, C, Ca, Fe, and W targets by 800 GeV/c protons at Fermilab. We employ a light-cone formulation of the DY reaction in the rest frame of the nucleus, where the dimuons detected at small values of Bjorken x2 ≪ 1 may be considered to ...
Methane/oxygen ice mixtures are irradiated in an ultra-high vacuum chamber at 10 K with 9.0 MeV α-particles to investigate the role of suprathermal oxygen atoms in the formation of oxygen-containing hydrocarbon molecules and to elucidate the formation of the hydrogen peroxyde radical, HO2, as a tracer for hitherto unobserved interstellar molecular oxygen, O2. Computer simulations calculate the ...
We report the first measurement of the target-normal single-spin asymmetry in deep-inelastic scattering from the inclusive reaction 3)He(↑)(e,e')X on a polarized (3)He gas target. Assuming time-reversal invariance, this asymmetry is strictly zero in the Born approximation but can be nonzero if two-photon-exchange contributions are included. The experiment, conducted at Jefferson Lab using a 5.8...
Single-inclusive reactions in pp scattering, such as pp → γX , pp → πX , pp → jetX , play an important role in QCD. At sufficiently large produced transverse momentum, pT , QCD perturbation theory (pQCD) can be used to derive predictions for these reactions. Since high pT implies large momentum transfer, the cross section may be factorized at leading power in pT into convolutions of long-distan...
Within a dense environment (ρ ≈ 10 atoms=cm) at ultracold temperatures (T < 1 μK), a single atom excited to a Rydberg state acts as a reaction center for surrounding neutral atoms. At these temperatures, almost all neutral atoms within the Rydberg orbit are bound to the Rydberg core and interact with the Rydberg atom. We have studied the reaction rate and products for nS Rb Rydberg states, and ...
The dynamics of a one-dimensional gas of inelastic point particles is investigated. To model inelastic collisions, it is supposed that the relative velocity of two colliding particles is reduced by a factor r, where 0 < I < 1. The constant r is the coefficient of restitution. Because the collisions are inelastic, particles can collide infinitely often in finite time so that the relative separat...
An inelastic flow is a flow with an inelastic rate, i.e., the rate is fixed, and it cannot be dynamically adjusted to traffic and load condition as in elastic flows like TCP. Real time, interactive sessions, and video/audio streaming are typical examples of inelastic flows. Reliable support of inelastic flows in wireless ad hoc networks is extremely challenging because flows and routes dynamica...
Abstract The super-scaling approach (SuSA) model, based on the analogies between electron and neutrino interactions with nuclei, is reviewed its application to description of neutrino-nucleus scattering presented. contribution both one- two-body relativistic currents considered. model validated $$(e,e')$$ ( <m...
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