We present a direct measurement of the parity-violating parameter A b by analyzing the left-right forward-backward asymmetry of b quarks in e + e ; !Z 0 ! bb. The SLD experiment observes hadronic decays of Z 0 bosons produced at resonance in collisions of longitudinally polarized electrons and unpolarized positrons at the SLC. Heavy avor decays of the Z 0 are identiied by using the topologicall...

Four XMM-Newton observations of the core of M31, spaced at 6 month intervals, show that the brightest point X-ray source, RXJ0042.6+4115, has a 0.4–10 keV luminosity of ∼5 10 erg s−1, and exhibits significant variability in intensity and X-ray spectrum over a time scale of ∼100 s including hard flares; such behaviour is only observed in Z-sources and transient black hole binaries in our Galaxy....

The approach of male Lobesia botrana (Lepidoptera: Tortricidae) in the wind tunnel to a source of sex pheromone was studied using two video cameras connected to image processing equipment. Three-dimensional records demonstrate that the flight to calling females is quite direct compared to the zigzag flight reported for other species. Convoluted paths displaying bimodal distribution of track and...

Car body acceleration is an important factor affecting track safety and ride comfort, which are two primary aspects of railway systems. Though track level is an important source of wagon body acceleration, no quantitative relation between them is available and the aim of this paper is to propose a method to address this issue. To do so, car body acceleration is determined using a 10 DOF simulat...

We have studied the impact of charged track resolution on Higgs mass and production cross section measurement in the process ee → ZH,Z → ll,H → X for Higgs masses between 120 and 160 GeV, and on smuon mass measurement using smuon pair production for three different mass pairs, assuming the International Linear Collider(ILC) is operated at 500 GeV center of mass energies (CME) with integrated lu...

The alignment uncertainties of the CMS Tracker detector, made of a huge amount of independent silicon sensors with an excellent position resolution, affect the performances of the track reconstruction, the track parameters measurement and the vertex reconstruction. In order to study the impact of the mis-alignment of the CMS tracking devices on the previous procedures, realistic estimates for t...

Nature uses bipedal motor proteins that “walk” down intracellular tracks to perform essential tasks in a variety of key biological processes. Although the molecular mechanisms through which these fascinating linear motors operate are beginning to be understood, there are still few synthetic mimics that exhibit the most important characteristics of natural motors, namely repetitive, progressive,...

We present results from four Rossi X-ray Timing Explorer (RXTE) observations of the bright low mass X-ray binary LMC X–2. During these observations, which span a year and include over 160 hrs of data, the source exhibits clear evolution through three branches on its hardness-intensity and color-color diagrams, consistent with the flaring, normal, and horizontal branches (FB, NB, HB) of a Z-sour...