The angular structure of collisional and radiative energy losses of a hard parton jet propagating through the quark-gluon plasma is analyzed. The possibility to observe the energy losses of quarkand gluon-initiated jets in dense QCD-matter (jet quenching) measuring the characteristics of real hadronic jets in ultra-relativistic collisions of nuclei is investigated. In particular, using calorime...

1 , A. Stroupe 2 , H. Aghazarian 3 , M. Garrett 4 , P. Younse 5 , and M. Powell 6 . 1 Jet Propulsion Laboratory, MS 198-219, 4800 Oak Grove Drive, Pasadena, CA 91109, [email protected]; 2 Jet Propulsion Laboratory, MS 198-219, 4800 Oak Grove Drive, Pasadena, CA 91109, [email protected]; 3 Jet Propulsion Laboratory, MS 198219, 4800 Oak Grove Drive, Pasadena, CA 91109, Hran...

We have developed the Monte Carlo simulation program Jewel 1.0 (Jet Evolution With Energy Loss), which interfaces a perturbative final state parton shower with medium effects occurring in ultrarelativistic heavy ion collisions. This is done by comparing for each jet fragment the probability of further perturbative splitting with the density-dependent probability of scattering with the medium. A...

A jet of a Newtonian liquid impacting on a wall at right angle spreads as a thin liquid sheet which preserves the radial symmetry of the jet. We report that for a viscoelastic jet (solution of polyethylene glycol in water) this symmetry can break; close to the wall, the jet cross section becomes faceted and radial steady liquid films (wings) form, which connect the cross-section vertices to the...

We present preliminary results of measurements of charged particle jet properties in proton-proton collisions at √ s = 7 TeV using the ALICE detector. Jets are reconstructed using anti − kT, kT and SISCone jet finding algorithms with resolution parameter R = 0.4 in the range of transverse momentum from 20 to 100 GeV/c in the midrapidity region (| η | < 0.5). The uncorrected charged jet spectra ...

Observations of the core of the giant radio galaxy NGC315 made with VLBI interferometers are discussed in the context of a relativistic jet. The sidedness asymmetry suggests Doppler favoritism from a relativistic jet. The presence of moving features in the jet as well as jet counter–jet brightness ratios hint at an accelerating, relativistic jet. An increasing jet velocity is also supported by ...

Azimuthal correlation functions are used to study jetand di-jet properties as a function of centrality in Au+Au collisions at √ s NN =200 GeV. Utilizing a novel technique to decompose the correlation function into a (di-)jet and an underlying event, the jet-pair distribution is extracted and compared to similar results for d+Au collisions obtained at the same collision energy. A striking simila...

Junctional ectopic tachycardia (JET) often occurs in the setting of surgery for congenital heart disease [1]. A congenital variety of JET not related to any surgery has also been described [2]. While post surgical JET has a mortality upto 14% [1], congenital JET has a mortality upto 34% [3]. A case of JET associated with myocarditis, has also been reported [4]. Electrocardiographic diagnosis of...

Context. Astrophysical jets from various sources seem to be stratified, with a fast inner jet and a slower outer jet. As it is likely that the launching mechanism for each component is different, their interface will develop differential rotation, while the outer jet radius represents a second interface where disruptions may occur. Aims. We explore the stability of stratified, rotating, relativ...