Triggers for New Physics in ATLAS and CMS

The large rate of inelastic collisions expected at the LHC is a challenge for the trigger systems of the ATLAS and CMS experiments. The strategies adopted to trigger on new physics signals are shown, with special focus on supersymmetric events, very high-pT objects and heavy stable charged particles

SUSY searches with Opposite Sign Dileptons at CMS

A full simulation study with the detector CMS is presented. The Leptons + Jets + Missing Energy (l = e,$\mu$) final state for SUSY events is investigated at mSUGRA benchmark point LM1. The end point in the dilepton pair invariant mass distribution is reconstructed and a scan of the $\left(m_{0},\, m_{1/2}\right)$ plane is performed in order to determine the observability reach

Estimation of DAC Weighting Capacitors Mismatch in Pipelined ADCs Employing Finite Gain Op-Amps

A D/A subconverter (DASC) error correction scheme based on weighting capacitor rotation is adapted to account for finite op-amp gain. Simulations show that reasonable estimates of capacitor mismatch can be obtained even if the actual gain is replaced by a nominal gain differing by as much as a factor of two. DASC capacitor mismatch might therefore be estimated in the foreground at power-up, and most part of the correspondingmismatch noise and mismatch-induced interstage gain error might be cancelled, possibly delegating to a background calibration the task of correcting the remaining interstage gain error, induced by finite op-amp gain and drift with temperature

Discriminating Supersymmetry and Black Holes at the Large Hadron Collider

We show how to differentiate the minimal supersymmetric extension of the standard model from black hole events at the Large Hadron Collider. Black holes are simulated with the CATFISH generator. Supersymmetry simulations use a combination of PYTHIA and ISAJET. Our study, based on event shape variables, visible and missing momenta, and analysis of dilepton events, demonstrates that supersymmetry and black hole events at the LHC can be easily discriminated.Comment: 12 pages, 8 figure

Transducer Arrays over A²B Networks in Industrial and Automotive Applications: Clock Propagation Measurements

Advanced automotive applications like Active Noise Cancellation (ANC) and Individual Listening Zones (ILZ) require a high number of transducers (i.e., microphones, accelerometers, and loudspeakers) usually arranged as arrays. Transducer arrays are widely employed in several applications besides automotive field, such as teleconferencing systems, industrial and civil monitoring of noise and vibrations. Automotive Audio Bus ( A2B ) is an audio transport protocol that solves the latest requirements of automotive and industrial fields. A2B allows transporting up to 32 channels in a multi-node daisy chain network and guarantees synchronization and low deterministic latency. This paper aims to develop a clock propagation model of an A2B network composed by transducer arrays. This model will be useful to evaluate the impact of the bus on the array performance. Firstly, a theoretical description of the A2B protocol and jitter analysis is provided. It follows a description of the jitter measures carried out on the clocks distributed along the A2B network. Lastly, latency introduced by nodes of the network is investigated