Fragmentation Of Quark And Gluon Jets In Proton Antiproton Collisions At Center Of Mass Energy Of 18 Tev PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Fragmentation Of Quark And Gluon Jets In Proton Antiproton Collisions At Center Of Mass Energy Of 18 Tev PDF full book. Access full book title Fragmentation Of Quark And Gluon Jets In Proton Antiproton Collisions At Center Of Mass Energy Of 18 Tev.
| Author | : Alexandre P. Pronko |
| Publisher | : |
| Total Pages | : |
| Release | : 2005 |
| Genre | : |
| ISBN | : |
Download Fragmentation of Quark and Gluon Jets in Proton-antiproton Collisions at Center-of-mass Energy of 1.8 TeV Book in PDF, ePub and Kindle
ABSTRACT: We report the first model independent measurement of charged particle multiplicities in quark and gluon jets, Nq_ and Ng_, produced at the Tevatron in proton-antiproton collisions with center-of-mass energy 1.8 TeV and recorded by the Collider Detector at Fermilab. The measurements are made for jets with average energies 41 and 53 GeV by counting charged particle tracks in cones with opening angle of thetac_=0.28, 0.36, and 0.47 rad around the jet axis. The corresponding jet hardness Q=Ej_et*thetac_ varies in the range from 12 GeV to 25 GeV. At Q=19.2 GeV, the ratio of multiplicities r=Ng_/Nq_ is found to be 1.64"0.17, where statistical and systematic uncertainties are added in quadrature. The results are in agreement with re-summed perturbative QCD calculations and are consistent with recent ee− measurements.
| Author | : Sergo R. Jindariani |
| Publisher | : |
| Total Pages | : |
| Release | : 2007 |
| Genre | : |
| ISBN | : |
Download Fragmentation of Jets Produced in Proton-antiproton Collisions at [center of Mass Energy] Book in PDF, ePub and Kindle
ABSTRACT: We present the first measurement of two-particle momentum correlations in jets produced in proton-antiproton collisions at center of mass energy of 1.96 TeV. A comparison of the experimental data to theoretical predictions obtained for partons within the framework of resummed perturbative QCD (Next-to-Leading Log Approximation) shows that the predicted parton momentum correlations survive the hadronization stage of jet fragmentation and are present at the hadron level. We also present the measurement of the intrinsic transverse momenta of particles with respect to jet axis (k [subscript T]). Experimental data is compared to the theoretical predictions obtained for partons within the framework of Modified Leading Log Approximation and Next-to-Modified Leading Log Approximation, and shows good agreement in the range of validity of the theoretical predictions. The results of both measurements indicate that the perturbative stage of the jet formation must be dominant and give further support to the hypothesis of Local Parton-Hadron Duality.
| Author | : |
| Publisher | : |
| Total Pages | : 112 |
| Release | : 1989 |
| Genre | : |
| ISBN | : |
Download Fragmentation Properties of Jets Produced in Proton-antiproton Collisions at Radical S Book in PDF, ePub and Kindle
Jet fragmentation properties have been studied in collisions of protons and antiprotons at a center-of-mass energy of 1.8 TeV, using the Collider Detector at Fermilab (CDF). The fractional momentum distribution of charged particles within jets is presented and compared with Monte-Carlo predictions. With increasing di-jet invariant mass from 60 to 200 GeV/c2 the fragmentation is observed to soften as predicted by scale breaking effects in Quantum Chromodynamics (QCD). The charged multiplicity in the jet core is observed to rise with di-jet invariant mass. 57 refs.
| Author | : |
| Publisher | : |
| Total Pages | : 140 |
| Release | : 2007 |
| Genre | : |
| ISBN | : |
Download Fragmentation of Jets Produced in Proton-Antiproton Collisions at $\sqrt{s} Book in PDF, ePub and Kindle
We present the first measurement of two-particle momentum correlations in jets produced in p$\bar{p}$ collisions at center of mass energy of 1.96 TeV. A comparison of the experimental data to theoretical predictions obtained for partons within the framework of resummed perturbative QCD (Next-to-Leading Log Approximation) shows that the predicted parton momentum correlations survive the hadronization stage of jet fragmentation and are present at the hadron level. We also present the measurement of the intrinsic transverse momenta of particles with respect to jet axis (kT). Experimental data is compared to the theoretical predictions obtained for partons within the framework of Modified Leading Log Approximation and Next-to-Modified Leading Log Approximation, and shows good agreement in the range of validity of the theoretical predictions. The results of both measurements indicate that the perturbative stage of the jet formation must be dominant and give further support to the hypothesis of Local Parton-Hadron Duality.
| Author | : Robert Brian Drucker |
| Publisher | : |
| Total Pages | : 542 |
| Release | : 1993 |
| Genre | : |
| ISBN | : |
Download Properties of W + Jet Events in Proton-antiproton Collisions at 1.8 TeV Book in PDF, ePub and Kindle
| Author | : Samantha K. Hewamanage |
| Publisher | : |
| Total Pages | : |
| Release | : 2011 |
| Genre | : |
| ISBN | : |
Download Search for Anomalous Production of Photon + Jets + Missing Transverse Energy in Proton-antiproton Collisions at a Center of Mass Energy of 1.96 TeV Using the CDF II Detector Book in PDF, ePub and Kindle
A model-independent signature-based search for physics beyond the Standard Model is performed in the photon + jets + missing transverse energy channel in proton-antiproton collisions at a center of mass energy of 1.96 TeV using the CDF II detector. Events with a photon + jets are predicted by the Standard Model and also by many theoretical models beyond the Standard Model. In the Standard Model, the main mechanisms for photon + jets production include quark-antiquark annihilation and quark-gluon scattering. No intrinsic missing transverse energy is present in any of these Standard Model processes. In this search, photon + [greater-than or equal to] 1 jet and photon + [greater-than or equal to] 2 jet events are analyzed with and without a minimum requirement on the missing transverse energy. Numerous mass distributions and kinematic distributions are studied and no significant excess over the background prediction is found. All results indicate good agreement with expectations of the Standard Model.
| Author | : David Johnny Shinkaruk |
| Publisher | : |
| Total Pages | : 238 |
| Release | : 2013 |
| Genre | : Calorimetry |
| ISBN | : |
Download Measuring the Quark and Gluon Jet Energy Response in Proton-proton Collisions at 7 TeV Center-of-mass Energy with the ATLAS Detector Book in PDF, ePub and Kindle
The jet energy scale is one of the largest systematic uncertainties in physics analyses at ATLAS, making it vital to understand and minimize. This thesis provides a comprehensive study of the quark and gluon jet responses, by comparing results of the missing transverse energy projection fraction method in the established gamma+jet events and the newly developed analysis of dijet events. A likelihood discriminator is used to tag jets according to their calorimeter response, and correct the response to one for the dijet study. The mean energy of quark and gluon tagged jets is shown to differ by 4-7%, depending on the energy of the jet.
| Author | : |
| Publisher | : |
| Total Pages | : 7 |
| Release | : 2004 |
| Genre | : |
| ISBN | : |
Download Measurement of Charged Particle Multiplicities in Gluon and Quark Jets in Proton Anti-proton Collisions at S**ư Book in PDF, ePub and Kindle
The authors report the first model independent measurement of charged particle multiplicities in quark and gluon jets, N{sub q} and N{sub g}, produced at the Tevatron in p{bar p} collisions with center-of-mass energy 1.8 TeV and recorded by the Collider Detector at Fermilab. The measurements are made for jets with average energies 41 and 53 GeV by counting charged particle tracks in cones with opening angle of?{sub c} = 0.28, 0.36, and 0.47 rad around the jet axis. The corresponding jet hardness Q = E{sub jet}?{sub c} varies in the range from 12 GeV to 25 GeV. At Q = 19 GeV, the ratio of multiplicities r = N{sub g}/N{sub q} is found to be 1.64 ± 0.17, where statistical and systematic uncertainties are added in quadrature. The results are in agreement with re-summed perturbative QCD calculations.
| Author | : |
| Publisher | : |
| Total Pages | : 7 |
| Release | : 2004 |
| Genre | : |
| ISBN | : |
Download Measurement of Charged Particle Multiplicities in Gluon and Quark Jets in Proton Anti-proton Collisions at S**1/2 Book in PDF, ePub and Kindle
The authors report the first model independent measurement of charged particle multiplicities in quark and gluon jets, N{sub q} and N{sub g}, produced at the Tevatron in p{bar p} collisions with center-of-mass energy 1.8 TeV and recorded by the Collider Detector at Fermilab. The measurements are made for jets with average energies 41 and 53 GeV by counting charged particle tracks in cones with opening angle of [theta]{sub c} = 0.28, 0.36, and 0.47 rad around the jet axis. The corresponding jet hardness Q = E{sub jet}[theta]{sub c} varies in the range from 12 GeV to 25 GeV. At Q = 19 GeV, the ratio of multiplicities r = N{sub g}/N{sub q} is found to be 1.64 ± 0.17, where statistical and systematic uncertainties are added in quadrature. The results are in agreement with re-summed perturbative QCD calculations.
| Author | : Freya Blekman |
| Publisher | : |
| Total Pages | : 158 |
| Release | : 2005 |
| Genre | : |
| ISBN | : 9789064641350 |
Download Top Quark Pair Production in Proton Antiproton Collisions Book in PDF, ePub and Kindle
