Atomic Number Dependence of Neutral Meson Yield from Proton Bombardment

Angular dependence of the sputtering yield of water ice by 100 keV proton bombardment

We measured the total sputtering yield of amorphous water ice for 100 keV H as a function of the projectile incidence angle, and the angular distribution of the ejected H2O and O2 molecules, using a quartz-crystal microbalance and mass spectrometry, respectively, at temperatures of 20 K and 100 K. The total sputtering yield follows a cos h dependence, with f ffi 1.3, regardless of the irradiati...

Critical basis dependence in bounding R-parity breaking couplings from neutral meson mixing

Assuming one nonzero product of two λ-type couplings and working in two different bases for the left-handed quark superfields, the neutral meson mixings are used to bound these products. We emphasize the strong basis dependence of the bounds: in one basis many products contribute to neutral meson mixings at tree level, while in the other these products except one contribute at 1-loop level only...

Relative yield of charged and neutral heavy meson pairs in e + e − annihilation near threshold

φ-meson production in proton-proton collisions

The production of φ-mesons in proton-proton collisions is investigated within a relativistic meson-exchange model of hadronic interactions. The experimental prerequisites for extracting the NNφ coupling strength from this reaction are discussed. In the absence of a sufficient set of data, which would enable an accurate determination of the NNφ coupling strength, we perform a combined analysis, ...

Cerebral injuries caused by atomic bombardment.