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Author : Mark Ian Parsons
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (67 download)
Download or read book Quark and Gluon Jets at LEP written by Mark Ian Parsons and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Mark Ian Parsons
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (67 download)
Download or read book Quark and Gluon Jets at LEP written by Mark Ian Parsons and published by . This book was released on 1994 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : William John Maitland
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (181 download)
Download or read book Quark and Gluon Jets from Z0 Decays Produced by E+e- Interactions at the LEP Collider written by William John Maitland and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : William John Maitland
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (181 download)
Download or read book Quark and Gluon Jets from Z0 Decays Produced by E+e- Interactions at the LEP Collider written by William John Maitland and published by . This book was released on 1994 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
![Download A Study of Quark and Gluon Jets and of the Long Distance QCD Force Field at the Z[sup 0]. PDF Online Free](https://books.google.com/books/content/images/frontcover/ELGyDAEACAAJ?fife=w200-h370)
Download or read book A Study of Quark and Gluon Jets and of the Long Distance QCD Force Field at the Z[sup 0]. written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Quantum Chromodynamics (QCD) is widely accepted as the correct theory of the strong nuclear force in elementary particle physics. The precision to which QCD has been tested is relatively limited, however, compared to the precision to which other interactions such as the electro-weak one have been tested. In part, this is because the large value of the QCD coupling constant, [alpha][sub s], renders theoretical calculations based on perturbation theory relatively imprecise. The confinement of quarks and gluons inside hadrons also leads to uncertainty because the theoretical predictions cannot, in general, be tested directly against the experimental measurements but are subject to hadronization corrections. From an experimental standpoint, it has proven difficult to isolate gluon jets inside multi-jet events in an unbiased manner so as to determine gluon jet properties using model independent methods. Basic quark-gluon interactions such as the four-jet matrix element in e[sup+]e[sup -] annihilations have been relatively untested due to the lack of a data sample with sufficient statistics. Perturbation theory has essentially nothing to say about the properties of the hadronization process itself. It is for these reasons that QCD has remained relatively untested.
Author :
Publisher :
ISBN 13 :
Total Pages : 18 pages
Book Rating : 4.:/5 (871 download)
Download or read book A Study of Quark and Gluon Jets and of the Long Distance QCD Force Field at the Z° written by and published by . This book was released on 1993 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: Quantum Chromodynamics (QCD) is widely accepted as the correct theory of the strong nuclear force in elementary particle physics. The precision to which QCD has been tested is relatively limited, however, compared to the precision to which other interactions such as the electro-weak one have been tested. In part, this is because the large value of the QCD coupling constant, [alpha]{sub s}, renders theoretical calculations based on perturbation theory relatively imprecise. The confinement of quarks and gluons inside hadrons also leads to uncertainty because the theoretical predictions cannot, in general, be tested directly against the experimental measurements but are subject to hadronization corrections. From an experimental standpoint, it has proven difficult to isolate gluon jets inside multi-jet events in an unbiased manner so as to determine gluon jet properties using model independent methods. Basic quark-gluon interactions such as the four-jet matrix element in ee− annihilations have been relatively untested due to the lack of a data sample with sufficient statistics. Perturbation theory has essentially nothing to say about the properties of the hadronization process itself. It is for these reasons that QCD has remained relatively untested.
Author :
Publisher :
ISBN 13 :
Total Pages : 6 pages
Book Rating : 4.:/5 (685 download)
Download or read book A Measurement of Quark and Gluon Jet Differences at the Z° Resonance written by and published by . This book was released on 1994 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors have studied differences between quark and gluon jets using 3-jet events in hadronic decays of Z° bosons collected by the SLD experiment at SLAC. Gluon jets were identified in symmetric 3-jet events containing one jet tagged as a heavy quark jet and compared with a mixed sample of quark and gluon jets and also with a mixed sample of light quark (u, d and s) and gluon jets. Their preliminary results show that the particle multiplicity in gluon jets is higher than that in light quark jets. These results are in qualitative agreement with QCD expectations. Differences are also observed in particle energy spectra and the jet widths, consistent with QCD expectations.
Download or read book Separation of Quark and Gluon Jets in High-p/sub T/ Events written by and published by . This book was released on 1984 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We suggest a procedure, based on the kinematics of qg-scattering in high-p/sub T/ events, whereby it is possible to obtain enriched samples of quark and gluon jets. At SppS energies this could be used to indicate whether quark and gluon jet fragmentation agree or not. At higher energies the application would rather be to study the differences in the parton cascades, i.e. jet substructure.
Author : Simone Campana
Publisher :
ISBN 13 :
Total Pages : 314 pages
Book Rating : 4.3/5 (121 download)
Download or read book Experimental Studies of Unbiased Gluon Jets from Electron-positron Annihilations Using the Jet Boost Algorithm written by Simone Campana and published by . This book was released on 2003 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Derek William Lane
Publisher :
ISBN 13 :
Total Pages : 136 pages
Book Rating : 4.:/5 (424 download)
Download or read book Resonance Production in Quark and Gluon Jets written by Derek William Lane and published by . This book was released on 1999 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: The formation of hadrons from free quarks and gluons is poorly understood and can not be fully explained by current theories. This hadronization process is described using phenomenological models, each reflecting possible scenarios for the QCD dynamics. Electron-positron annihilation at the Z0 resonance provides an ideal environment in which to study hadron production because of the combination of high event rates and clean final states due to the absence of beam and target remnants. Using the particle identification capabilities of the DELPHI detector at the Large Electron-Positron collider (LEP), it is possible to differentiate the production of different hadron species in the final state. This information allows the study of details of the transition from quarks and qluons to stable hadrons. This thesis investigates the hadronization process by comparing the production of [Phi] and K*0 particles produced in quark jets versus those produced in gluon jets at the Z0.
Author : Ayda Koeksal
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (277 download)
Download or read book Determination of Differences Between Quark and Gluon Jets in 3-jet Events written by Ayda Koeksal and published by . This book was released on 1996 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Robert Michael Snihur
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (451 download)
Download or read book Subjet Multiplicity of Quark and Gluon Jets Reconstructed with the K̳ Algorithm in P−p Collisions written by Robert Michael Snihur and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents some of the first experimental results of the k⊥ jet algorithm at a hadron collider. Gluon jets dominate the final state of proton-antiproton (pp¯) collisions at high center-of-mass energies ( s = 1800 GeV). Quark jets make up a significant fraction of the jet cross section only at high jet transverse momentum pT or low s . For fixed pT, we compare jets at s = 1800 GeV to s = 630 GeV, and interpret differences in terms of differing contributions from gluon and quark jets. We define jets with a successive combination algorithm based on relative transverse momenta ( k⊥ ). To study jet structure, the k⊥ algorithm is then applied within the jet to resolve subjets. We measure the number of subjets within mixed quark and gluon jet samples at s = 1800 and 630 GeV. A simple method is used to extract measurements of pure quark and gluon jet samples separately. The method requires knowledge of the relative mix of quarks and gluons in the two s samples, which we derive from Monte Carlo and a detailed detector simulation. The number of subjets emitted in gluon jets is measured to be approximately twice that in quark jets.
Author : Y. K. Kim
Publisher :
ISBN 13 :
Total Pages : 27 pages
Book Rating : 4.:/5 (255 download)
Download or read book Comparison of Quark and Gluon Jets Using Three-jet Events from E + E - Annihilation at TRISTAN written by Y. K. Kim and published by . This book was released on 1990 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Y. K. Kim
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (255 download)
Download or read book A Comparison of Quark and Gluon Jets Produced in High Energy E + E - Annihilations written by Y. K. Kim and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Gerrit Schierholz
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (748 download)
Download or read book Comparison of quark and gluon jets written by Gerrit Schierholz and published by . This book was released on 1984 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Tom T. Hartley
Publisher :
ISBN 13 :
Total Pages : 180 pages
Book Rating : 4.:/5 (217 download)
Download or read book A Study of Quark and Gluon Jet Production Through the Observation of Event Shapes written by Tom T. Hartley and published by . This book was released on 1982 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Bernd Nellen
Publisher :
ISBN 13 :
Total Pages : 13 pages
Book Rating : 4.:/5 (722 download)
Download or read book Lambda and K_1hnO_1tnS Production in Quark and Gluon Jets Classified by Energy Ordering written by Bernd Nellen and published by . This book was released on 1997 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt:
