An overview is presented of the analysis code SAMMY, used for evaluation and analysis of time-of-flight cross section data in the resolved and unresolved resonance regions. Included are brief descriptions of the methods used for generating the theoretical cross sections (R-Matrix theory), for simulating the effect of experimental conditions (such as Dopplerand resolution-broadening, multiplesca...

The cross section of the process e+e− → π0π0γ has been measured in the c.m. energy range 600–970 MeV with the CMD-2 detector. The following branching ratios have been determined: B(ρ0 → π0π0γ) = (5.2 −1.3 ± 0.6) × 10−5 and B(ω → π0π0γ) = (6.4 −2.0 ± 0.8) × 10−5. Evidence for the ρ0 → f0(600)γ decay has been obtained: B(ρ0 → f0(600)γ) = (6.0 −2.7 ± 0.9) × 10−5. From a search for the process e+e−...

The Faddeev-Yakubovsky equations in configuration space have been solved for the four nucleon system with special interest in their scattering states. We present results concerning the structure of the first He, scattering states in different (T,S) channels including the first inelatic threshold N+3N→NN+NN and the n-t cross section using realistic potentials.

Searches for standard model Higgs boson production at the DØ experiment in p¯ p collisions at √ s = 1.96 TeV are carried out for Higgs boson masses (mH) in the range 100 ≤ mH ≤ 200 GeV. Most of these searches use the full Run II data set, corresponding to an integrated luminosity of 9.7 fb −1 , and are combined to maximize the sensitivity to the standard model Higgs boson. In absence of a signi...

We present details of a search for electroweak production of single top quarks in the electron+jets and muon+jets decay channels. The measurements use ≈ 90 pb −1 of data from Run 1 of the Fermilab Tevatron collider, collected at 1.8 TeV with the DØ detector. We use events that include a tagging muon, implying the presence of a b jet, to set an upper limit at the 95% confidence level on the cros...

The cross-sections for both elastic longitudinal W + W − scattering (W

by the DØ experiment in Run II of the upgraded Fermilab Tevatron Collider at a center of mass energy of √ s = 1.96 TeV have been used to search for evidence of supersymmetry in eµ + final states accompanied by missing transverse energy. In supersymmetry models, such topologies are expected to contain contributions from associated chargino and neutralino production. Data corresponding to an inte...

We examine the role of neutron capture on Sn during r-process freezeout in the neutrino-driven wind environment of the core-collapse supernova. We find that the global r-process abundance pattern is sensitive to the magnitude of the neutron capture cross section of Sn. The changes to the abundance pattern include not only a relative decrease in the abundance of Sn and an increase in the abundan...

The measurement of the beauty quark production cross section in deep inelastic scattering with the ZEUS detector at HERA is presented. The cross section for beauty quarks, measured in the kinematic range Q > 2 GeV and 0.05 < y < 0.7, and for events with at least one muon and one jet in the Breit frame, is somewhat above the next-to-leading order (NLO) QCD prediction, but in agreement within the...