Abstract Silicon sensors are the most diffuse position sensitive device in particle physics experiments and countless applications science technology. They had a spectacular progress performance over almost 40 years since their first introduction, but evolution is now slowing down. The resolution for single hits larger than few microns advanced sensors. This value was reached already 30 ago [1]...

Abstract. Soft QCD measurements using proton-proton collisions at √ s = 900 GeV and 7 TeV recorded with the ATLAS detector at the LHC are presented. Charged particle distributions were measured using tracks reconstructed in the ATLAS inner detector. Activity in the underlying event was studied using independent measurements from tracking detectors and calorimeters. Two-particle angular correlat...

Due to its unique pseudorapidity coverage (2 < η < 5) and excellent performance, the LHCb detector allows for studying soft QCD processes at large rapidities and low transverse momenta. Selected results, such as charged particle multiplicities and densities, forward energy flow and prompt charm production are briefly summarized in these proceedings. The measurements are performed using large sa...

The momentum changes caused by position measurements are a central feature of wave-particle duality. Here we investigate two cases-localization by a single slit, and which-way detection in the double-slit interference experiment-and examine in detail the associated momentum changes. Particular attention is given to the transfer of momentum between particle and detector, and the recoil of the me...

A prototype weakly interacting massive particle (WIMP) detector system is described. The detection efficiency is much larger when the incident neutral particle flux is perpendicular to the detector plane than when it is parallel to the plane. A greatly scaled-up system based on this device would therefore be sensitive to the diurnal rotation of the “WIMP wind” produced by the solar system’s rap...