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Author : Tomas Josef Pavel
Publisher :
ISBN 13 :
Total Pages : 506 pages
Book Rating : 4.:/5 (83 download)
Download or read book Measurement of Charged Hadron Spectra at the Z0 with Cherenkov Ring Imaging written by Tomas Josef Pavel and published by . This book was released on 1996 with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt:
![Download Measurement of Charged Hadron Spectra at the Z[sup 0] with Cherenkov Ring Imaging PDF Online Free](https://books.google.com/books/content/images/frontcover/cU3kjwEACAAJ?fife=w200-h370)
Download or read book Measurement of Charged Hadron Spectra at the Z[sup 0] with Cherenkov Ring Imaging written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation attempts to probe hadronization, the process by which the fundamental quarks described by quantum chromodynamics produce the jets of hadrons that the author observed in experiments. The measurements are made using e[sup+]e[sup -] collisions at the SLAC Linear Collider (SLC), operating at the Z[sup 0] resonance with the SLC Large Detector (SLD), and the unique capabilities of the SLC/SLD facility are exploited. First, the spectra of charged hadrons ([pi][sup[+-]], K[sup[+-]], and p/[bar p]) are measured. This is accomplished with the SLD Cherenkov Ring Imaging Detector (CRID), one of a first generation of devices that have been developed for efficient particle identification over a wide momentum range. The use of the CRID is central to this dissertation, and its design and performance are described in detail here. The measured spectra agree with other measurements at the Z[sup 0] and extend the momentum coverage. Next, the excellent spatial resolution of the SLD tracking systems, along with the small and stable beam spots of the SLC, is employed to identify jets produced from heavy b or c quarks and to separate them from the remaining light-quark (uds) jets. This removes the effects of heavy quark fragmentation and decays of heavy-quark hadrons from the study of hadronization. The first measurements of particle spectra in light-quark jets are then presented. Finally, the highly-polarized incident electron beam of the SLC, together with the electroweak asymmetries of the quarks, is exploited to separate quark and antiquark jets. Significant differences in quark-antiquark production of protons and of kaons are observed at high momenta. This signal suggests a leading particle effect, where the particles containing the primary quark of a jet are more likely to populate the high-momentum phase space than are other hadrons.
Author :
Publisher :
ISBN 13 :
Total Pages : 269 pages
Book Rating : 4.:/5 (871 download)
Download or read book Measurement of Charged Hadron Spectra at the Z° with Cherenkov Ring Imaging written by and published by . This book was released on 1997 with total page 269 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation attempts to probe hadronization, the process by which the fundamental quarks described by quantum chromodynamics produce the jets of hadrons that the author observed in experiments. The measurements are made using ee− collisions at the SLAC Linear Collider (SLC), operating at the Z° resonance with the SLC Large Detector (SLD), and the unique capabilities of the SLC/SLD facility are exploited. First, the spectra of charged hadrons ([pi]{sup {+-}}, K{sup {+-}}, and p/{bar p}) are measured. This is accomplished with the SLD Cherenkov Ring Imaging Detector (CRID), one of a first generation of devices that have been developed for efficient particle identification over a wide momentum range. The use of the CRID is central to this dissertation, and its design and performance are described in detail here. The measured spectra agree with other measurements at the Z° and extend the momentum coverage. Next, the excellent spatial resolution of the SLD tracking systems, along with the small and stable beam spots of the SLC, is employed to identify jets produced from heavy b or c quarks and to separate them from the remaining light-quark (uds) jets. This removes the effects of heavy quark fragmentation and decays of heavy-quark hadrons from the study of hadronization. The first measurements of particle spectra in light-quark jets are then presented. Finally, the highly-polarized incident electron beam of the SLC, together with the electroweak asymmetries of the quarks, is exploited to separate quark and antiquark jets. Significant differences in quark-antiquark production of protons and of kaons are observed at high momenta. This signal suggests a leading particle effect, where the particles containing the primary quark of a jet are more likely to populate the high-momentum phase space than are other hadrons.
Author :
Publisher :
ISBN 13 :
Total Pages : 739 pages
Book Rating : 4.:/5 (44 download)
Download or read book Graduel de Lyon written by and published by . This book was released on 1780 with total page 739 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : George Booth Coutrakon
Publisher :
ISBN 13 :
Total Pages : 274 pages
Book Rating : 4.:/5 (12 download)
Download or read book Hadron Identification at 200 GEV/C Using a Ring Imaging Cherenkov Detector written by George Booth Coutrakon and published by . This book was released on 1983 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Nicholas H. Brook
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (59 download)
Download or read book The Flavour Dependence of Charged Hadron Production at Large Transverse Momenta Using High Energy Photon and Hadron Beams at the OMEGA Spectrometer written by Nicholas H. Brook and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Nicholas Harvey Brook
Publisher :
ISBN 13 :
Total Pages : 111 pages
Book Rating : 4.:/5 (15 download)
Download or read book Flavour Dependence of Charged Hadron Production at Large Transverse Momenta Using High Enery Photon and Hadron Beams at the OMEGA Spectrometer Equipped with a Ring Imaging Cherenkov Detector written by Nicholas Harvey Brook and published by . This book was released on 1989 with total page 111 pages. Available in PDF, EPUB and Kindle. Book excerpt:
![Download Production of Charged [pi]{sup {+-}}, [Kappa]{sup {+-}} and P/p in Hadronic Z° Decays PDF Online Free](https://books.google.com/books/content/images/frontcover/xdIxngAACAAJ?fife=w200-h370)
Author :
Publisher :
ISBN 13 :
Total Pages : 5 pages
Book Rating : 4.:/5 (871 download)
Download or read book Production of Charged [pi]{sup {+-}}, [Kappa]{sup {+-}} and P/p in Hadronic Z° Decays written by and published by . This book was released on 1999 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: We have updated our results on identified charged hadron production using the full SLD data sample of 550,000 hadronic Z° decays taken between 1993 and 1998. The SLD Cherenkov Ring Imaging Detector allows the identification of clean samples of charged pions, kaons and protons over a wide momentum range, providing precise tests of perturbative QCD calculations and of fragmentation models. We have studied flavor-inclusive Z° decays, as well as decays into light, c and b flavors, selected using the SLD vertex detector. In addition we have updated our comparison of hadron and antihadron production in light quark (rather than antiquark) jets, selected using the high SLC electron beam polarization. Differences between hadron and antihadron production at high momentum fraction provide precise measurements of leading particle production and new, stringent tests of fragmentation models.
Download or read book Cerenkov Ring Imaging and Spectroscopy of Charged KSTAR Interactions at 11 GeV written by and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The physics and technology of this new Cerenkov detector are discussed, including materials studies, construction techniques, and resolution measurements. Sources of resolution error are individually identified and measured where possible. The results of all studied indicate that the measurement resolution is understood. This work has led to the adoption of a large scale ring imaging detector as part of a new high energy physics spectrometer, the SLD, at the Stanford Linear Accelerator Center. Results from an amplitude analysis of strange meson final states in K/sup /minus//p .-->. /ovr K0/.pi./sup /minus//p interactions are presented. The data derive from a 4 event/nb exposure of the LASS (large Aperture Superconducting Solenoid) spectrometer to an 11 GeV/c K/sup /minus// beam. The data sample consists of (approximately)100,000 vents distributed over the Dalitz plot of the channel. The process is observed to be dominated by the production and decay of natural spin-parity (J/sup P/ = 1/sup /minus//,2,3/sup /minus//, /hor ellipsis/) strange meson states. The data can be understood in terms of a simple model in which the resonant /ovr K*−/ are produced predominantly via natural parity exchange in the t channel. The leading K*(890), K2*(1430), and K*(1780) resonances are clearly observed and measured, and the underlying spectroscopy is also extracted. Indications of higher mass resonance production are also shown. The observed properties of these states are used to confront current models of quark spectroscopy in strange meson systems. 94 refs., 96 figs., 23 tabs.
