نتایج جستجو برای: scattering event

تعداد نتایج: 315680  

1997
Alessandro Bravar Krzysztof Kurek

POLDIS is a Monte Carlo program for polarized (semi-inclusive) deep inelastic scattering (DIS). Unpolarized DIS events are generated with the existing lepto-production event generators LEPTO for DIS and AROMA for Heavy Flavor production. The relevant spin asymmetries are computed at partonic level to first order in αs for each generated event, and are then convoluted with the corresponding rati...

2013
Utpal Chattopadhyay Tarek Ibrahim Pran Nath

A brief review is given of the effects of CP violation on the direct detection of neutralinos in dark matter detectors. We first summarize the current developments using the cancellation mechanism which allows for the existence of large CP violating phases consistent with experimental limits on the electron and on the neutron electric dipole moments in a broad class of SUSY, string and D brane ...

2004
M RAVINDRA

Several very large scale integrated (VLSI) devices which are not available in radiation hardened version are still required to be used in spacecraft systems. Thus these components need to be tested for highenergy heavy ion irradiation to find out their tolerance and suitability in specific space applications. This paper describes the high-energy heavy ion radiation testing of VLSI devices for s...

1997
Jon Pumplin

Jets observed in hadron-hadron scattering contain a contribution from the “underlying event” that is produced by spectator interactions taking place incoherently with the major parton-parton collision, due to the extended composite structure of the colliding hadrons. Using a recent measurement of the double parton interaction rate, we calculate that the underlying event may be 2–3 times stronge...

2006
Clovis Hopman

Compact remnants on orbits with peri-apses close to the Schwarzschild radius of a massive black hole (MBH) lose orbital energy by emitting gravitational waves (GWs) and spiral in. Scattering with other stars allows successful inspiral of such extreme mass ratio inspiral sources (EMRIs) only within small distances, a < few× 0.01pc from the MBH. The event rate of EMRIs is therefore dominated by t...

2009
R. B. Patterson E. M. Laird P. D. Meyers I. Stancu H. A. Tanaka

The Booster Neutrino Experiment (MiniBooNE) searches for νμ → νe oscillations using the ∼1 GeV neutrino beam produced by the FNAL Booster synchrotron. The array of photomultiplier tubes (PMTs) lining the MiniBooNE detector records Cherenkov and scintillation photons from the charged particles produced in neutrino interactions. We describe a maximum likelihood fitting algorithm used to reconstru...

2009
R. Corke T. Sjöstrand

The concept of multiple partonic interactions in hadronic events is vital for the understanding of both minimum-bias and underlying-event physics. The area is rather little studied, however, and current models offer a far from complete coverage, even of the effects we know ought to be there. In this article we address one such topic, namely that of rescattering, where an already scattered parto...

2008
Carola F. Berger George Sterman

We discuss a class of event shapes for ee dijet events that include the thrust as a special case. Large logarithmic corrections to the corresponding cross sections can be resummed to all logarithmic orders at leading power. However, irrespective of the order up to which the perturbative expansion is calculated, it has to be supplemented by nonperturbative corrections due to its at best asymptot...

1999
A. Ringwald

We describe a Monte Carlo event generator for the simulation of QCD-instanton induced processes in deep-inelastic scattering (HERA). The QCDINS package is designed as an “add-on” hard process generator interfaced to the general hadronic event simulation package HERWIG. It incorporates the theoretically predicted production rate for instanton-induced events as well as the essential characteristi...

Journal: :iranian journal of radiation research 0
v. changizi department of medical physics, faculty of medicine, tehran university of medical sciences, tehran, iran m.a. oghabian department of medical physics, faculty of medicine, tehran university of medical sciences, tehran, iran s. sarkar department of medical physics, faculty of medicine, tehran university of medical sciences, tehran, iran r.d. speller department of medical physics and bioengineering, university college london, london wc1e 6ja, uk a. arab kheradmand department of medical physics, faculty of medicine, tehran university of medical sciences, tehran, iran

abstract background: coherent scattering leads to diffraction effects and especially constructive interferences. theseinterferences carry some information about the molecular structure of the tissue. as breast cancer isthe most widespread cancer in women, this project evaluated the application of small anglex-ray scattering (saxs) for differentiation between normal and cancerous breast tissues....

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