The objective of this study was to evaluate children's respiratory patterns in the mixed dentition, by means of acoustic rhinometry, and its relation to the upper arch width development. Fifty patients were examined, 25 females and 25 males with mean age of eight years and seven months. All of them were submitted to acoustic rhinometry and upper and lower arch impressions to obtain plaster mode...

We present three measurements of the top quark mass in the lepton plus jets channel with 1.9fb of data using quantities with minimal dependence on the jet energy scale in the lepton plus jets channel at CDF. One measurement uses the mean transverse decay length of b-tagged jets (L2d) to determine the top mass, another uses the transverse momentum of the lepton (LepPt) to determine the top mass,...

The six-dimensional volume in phase space enclosing the beam from the SLAC injector has been measured. The design of the injector and preliminary measurements on the prototype injector were reported at the National Particle Accelerator Conference, March 10-12, 1~65.~ This paper reports on similar measurements on the completed injector as installed on the SLAC two-mile accelerator. The measureme...

As a step in a larger program of muon cooling R&D, we propose to study ionization cooling of 170-MeV/c muons in LH2 and LiH absorbers inside a 2-2.5 T solenoid magnet but without rf acceleration (“minicooling”). The required flux of muons is small, such that only one muon is in the apparatus at a time; the desired muon bunch will be reconstructed offline via software. This study will validate t...

This paper describes a measurement of the W boson transverse momentum distribution using ATLAS pp collision data from the 2010 run of the LHC at ffiffi s p 1⁄4 7 TeV, corresponding to an integrated luminosity of about 31 pb . Events form bothW ! e andW ! are used, and the transverse momentum of the W candidates is measured through the energy deposition in the calorimeter from the recoil of the ...

The measurement of missing transverse momentum in the ATLAS detector, described in this paper, makes use of the full event reconstruction and a calibration based on reconstructed physics objects. The performance of the missing transverse momentum reconstruction is evaluated using data collected in pp collisions at a centre-of-mass energy of 7 TeV in 2010. Minimum bias events and events with jet...

This dissertation describes a measurement of the muon charge asymmetry from W boson decays. The charge asymmetry provides useful information about the momentum distribution of u and d quarks inside the proton. The charge asymmetry was measured using ≈ 230 pb−1 of data collected between 2002 and 2004 using the DØ detector at the Tevatron collider at Fermi National Accelerator Laboratory. In the ...

In this paper, we present a single-shot transverse emittance measurement for 125 ± 3 MeV electron beam using pepper-pot technique. A normalised transverse emittance as low as 1.1 ± 0.1 -mm-mrad was measured using this method. Considering 60 consecutive shots, an average normalised emittance of εrms,x,y=2.2 ± 0.7, 2.3 ± 0.6 -mm-mrad was obtained, which is comparable to a conventional linear ac...

The mean transverse momentum 〈pT 〉 of particles produced in heavy ion collisions and its event-by-event fluctuations are considered to be sensitive to critical fluctuations of the temperature of the hot and dense system created in such collisions. Fluctuations of 〈pT 〉 in proton-proton collisions are an essential reference measurement for these studies. Furthermore the mean transverse momentum ...

Electrical tomography can be used as a structural health monitoring technique to identify different damage mechanisms in composite laminates. Previous work has established the link between transverse cracking density and mesoscale conductivity of the ply. Through the mesoscale relationship, the conductivity obtained from electrical tomography can be used as a measure of the transverse cracking ...