Upper limits on the cross section for Standard Model Higgs-boson production in p¯ p → H + X at √ s = 1.96 TeV are determined for 100 < mH < 200 GeV/c 2. The contributing production processes include associated production (W H → νb ¯ b, ZH → /ννb ¯ b) and gluon fusion (H → W + W −). Analyses are conducted with integrated luminosities from 0.84 fb −1 to 1.05 fb −1 recorded by the DØ experiment. L...

We present a search for neutral supersymmetric Higgs bosons decaying to ττ pairs produced in pp̄ collisions at √ s = 1.96 TeV. The data have been collected with the CDF II and D0 detectors at the Tevatron collider at Fermilab (1 fb of integrated luminosity per experiment). No significant excess above the standard model backgrounds is observed. We set exclusion limits on the Higgs production cros...

We provide an effective Lagrangian analysis of contact non-standard interactions of neutrinos with electrons, which can be effectively mediated by extra particles, and examine the associated experimental limits. At present, such interactions are strongly constrained only for νμ: the bounds are loose for νe and absent for ντ . We emphasize the unique role played by the reaction ee → νν̄γ in provi...

Volume reconstruction by backprojection is the computational bottleneck in many interventional clinical computed tomography (CT) applications. Today vendors in this field replace special purpose hardware accelerators by standard hardware like multicore chips and GPGPUs. This paper presents low-level optimizations for the backprojection algorithm, guided by a thorough performance analysis on fou...

We combine results from CDF and DØ on direct searches for a standard model (SM) Higgs boson (H) in p¯ p collisions at the Fermilab Tevatron at √ s = 1.96 TeV. Compared to the previous Higgs Tevatron combination, more data and new channels (W H → τ νb ¯ b, V H → τ τ b ¯ b/jjτ τ , V H → jjb ¯ b, t ¯ tH → t ¯ tb ¯ b) have been added. Most previously used channels have been reanalyzed to gain sensi...