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Author : Jingchen Zhou
Publisher :
ISBN 13 :
Total Pages : 336 pages
Book Rating : 4.:/5 (382 download)
Download or read book Studies of Multiparticle Production in Hadronic Z0 Decays written by Jingchen Zhou and published by . This book was released on 1997 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 160 pages
Book Rating : 4.:/5 (684 download)
Download or read book Studies of Multiparticle Production in Hadronic Z° Decays written by and published by . This book was released on 1996 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hadronic decays of Z° bosons produced in ee− annihilation are ideal for testing QCD. This thesis presents a measurement of the charged-particle multiplicity distribution and the first experimental study of the ratio of cumulant to factorial moments, using hadronic Z° decays collected by the SLD experiment at SLAC. The author finds that this ratio, as a function of the moment-rank q, decreases sharply to a negative minimum at q = 5, which is followed by quasi-oscillations. These features are in qualitative agreement with expectations from higher-order perturbative QCD. The author also presents an analysis of the intermittency in rapidity phase space using the method of scaled factorial moments. It is found that both parton cascade and hard-gluon radiations contribute to the growth of the moments by studying the event-shape and jet-topology dependencies. All aspects of the data appear to be reproduced reasonably well by the QCD-based Monte Carlo model.
Author : Peter A. Carruthers
Publisher : World Scientific
ISBN 13 : 9789971505585
Total Pages : 714 pages
Book Rating : 4.5/5 (55 download)
Download or read book Hadronic Multiparticle Production written by Peter A. Carruthers and published by World Scientific. This book was released on 1988 with total page 714 pages. Available in PDF, EPUB and Kindle. Book excerpt: http://www.worldscientific.com/worldscibooks/10.1142/0492
Author : Armin Böhrer
Publisher :
ISBN 13 :
Total Pages : 112 pages
Book Rating : 4.:/5 (14 download)
Download or read book Inclusive Particle Production in Hadronic Decays of the Z Boson at LEP I written by Armin Böhrer and published by . This book was released on 1997 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ina Sarcevic
Publisher : World Scientific
ISBN 13 : 9814542938
Total Pages : 542 pages
Book Rating : 4.8/5 (145 download)
Download or read book Qcd And Multiparticle Production - Proceedings Of The Xxix International Symposium On Multiparticle Dynamics written by Ina Sarcevic and published by World Scientific. This book was released on 2000-07-05 with total page 542 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume concentrates on three main areas of current research in high energy physics: (1) multiparticle and diffractive production in perturbative and nonperturbative QCD, (2) confinement-deconfinement mechanism and the RHIC physics, and (3) interface between high-energy collisions and cosmic-ray/astro-physics. The specific topics covered include: QCD at high energies, diffractive production, and small-x physics, multiparticle production and systematics: correlations and fluctuations, hadronic final states in e+e-, lepton-hadron and hadron-hadron collisions, relativistic heavy ion collisions, interface between high-energy collisions and cosmic-ray physics, and recent development in deconfinement.
Author : M M Block
Publisher : World Scientific
ISBN 13 : 9814550841
Total Pages : 650 pages
Book Rating : 4.8/5 (145 download)
Download or read book Multiparticle Dynamics - Proceedings Of The Xxiii International Symposium written by M M Block and published by World Scientific. This book was released on 1994-04-26 with total page 650 pages. Available in PDF, EPUB and Kindle. Book excerpt: This international meeting on ultrahigh energy multiparticle phenomena started with a summary of neutrino physics, followed by a detailed review of LEP results. It moved on to the fast-breaking field of rapidity gaps, hard pomeron and small-x structure functions at both Hera and the FermiLab Tevatron. The major collider experiments at FermiLab, and in particular, the results of the top quark search were presented in complete detail. The fields of intermittency, multiplicities, correlation functions, heavy quarks, soft and semihard hadronic physics, and the particle physics aspects of cosmic rays were subjects of spirited debate.
Author :
Publisher :
ISBN 13 :
Total Pages : 4 pages
Book Rating : 4.:/5 (893 download)
Download or read book Study of Hadronic Final States of Z Boson Decays written by and published by . This book was released on 1989 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: We have studied hadronic final states produced in the decays of Z bosons using the Mark II detector at SLC. We have measured the distributions of global shape parameters, inclusive charged particle distributions, charge particle multiplicity and jet multiplicity. The results are compared to predictions of QCD-based models optimized at the PEP energy. The data and models agree within the present statistical precision. We have also investigated a new method to determine the QCD scale parameter [Lambda]{sub {ovr MS}} using differential jet multiplicity. 9 refs., 5 figs.
Author : Ulrich Becker
Publisher :
ISBN 13 :
Total Pages : 16 pages
Book Rating : 4.:/5 (311 download)
Download or read book J and Xc̳ Production in Hadronic Z0 Decays written by Ulrich Becker and published by . This book was released on 1994 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 10 pages
Book Rating : 4.:/5 (684 download)
Download or read book Properties of Leading Particles in Hadronic Z° Decays written by and published by . This book was released on 1996 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present studies of leading particle production in Z° decays into light, c, and b quarks performed with the SLD experiment at SLAC. The SLD precision vertex detector was exploited to tag light-flavor events, to tag charmed meson vertices and separate the prompt and B-decay components, and to reconstruct B-hadrons partially. The relative production of prompt pseudoscalar and vector D-mesons was measured to be P{sub V} = 0.53 " 0.06(stat.) " 0.02(syst.) (preliminary). The shape of the B-hadron energy spectrum was found to be consistent with the predictions of a number of models, and the average energy fraction was measured to be x{sub E} = 0.697 " 0.012(stat.) " 0.028(syst.) (preliminary). Separation of light quark and antiquark jets was achieved using the highly polarized SLC electron beam, and hadrons were identified using the SLD Cherenkov Ring Imaging Detector. Production of particles and antiparticles in quark jets was compared, allowing the first direct observation of leading particles in ee− --> u{anti u}, d{anti d}, s{anti s} events. More high momentum baryons and K−'s than antibaryons and K's were observed, providing evidence for leading baryon and kaon production, as well as for strangeness suppression at high momentum.
![Download Strange Particle Production in Hadronic Z[sup 0] Decays PDF Online Free](https://books.google.com/books/content/images/frontcover/PsTgjwEACAAJ?fife=w200-h370)
Download or read book Strange Particle Production in Hadronic Z[sup 0] Decays written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A study has been made of neutral strange baryons and pseudoscalar mesons produced in hadronic decays of the weak gauge boson V. The experiment was performed at the Stanford Linear Accelerator Center, which has the unique capability of colliding highly polarized electrons with unpolarized positrons. Overall production rates and spectra of the K[sup 0] and the[Lambda][sup 0] (+[Lambda][sup 0]) were measured and compared with other experiments as well as with Quantum Chromodynamics calculations. The combination of the small, stable beam spots produced by the SLAC Linear Collider (SLC) and the precision vertexing capabilities of the SLC Large Detector (SLD) permitted the separation of the hadronic events into three quark flavor-enriched samples. An unfolding was performed to obtain flavor-pure samples, and for the first time measurements were made of K[sup 0] and[Lambda][sup 0] (+[Lambda][sup 0]) production rates and spectra in uds, c, and b quark events at the Z[sup 0] pole. This measurement revealed significant production differences. Utilizing the large quark production asymmetry due to the polarized electron beam, high-purity quark and antiquark jet samples were obtained. The first measurement of production differences of the[Lambda][sup 0] baryon in quark and antiquark jets was performed, which provided clear evidence for a leading particle effect at high momenta.
Author : Jorge Dias De Deus
Publisher : World Scientific
ISBN 13 : 9814546097
Total Pages : 522 pages
Book Rating : 4.8/5 (145 download)
Download or read book Multiparticle Dynamics - Proceedings Of The Xxvi International Symposium written by Jorge Dias De Deus and published by World Scientific. This book was released on 1997-05-29 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume discusses the most recent results on multiparticle production. These include the differences between quark and gluon jets from LEP at CERN, the search for the disoriented chiral condensate at Fermilab, the existence (or not) of the quark-gluon plasma and the large rapidity gaps in Hera physics. In many different experimental situations, the subject of multiparticle dynamics remains alive.Main speakers: J Antos, B J May, J D Bjorken, P Sondereger, I Tserruya, R C Hwa, R Ugoccioni, A Giovannini, C Grupen, A de Angelis, G Thompson, J Kwiecinski, B Andersson.
![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 Preliminary Measurement of Leading Particle Effects in Hadronic Z[sup 0] Decays PDF Online Free](https://books.google.com/books/content/images/frontcover/O-UDkAEACAAJ?fife=w200-h370)
Download or read book Preliminary Measurement of Leading Particle Effects in Hadronic Z[sup 0] Decays written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We present preliminary evidence for leading particle production in hadronic decays of the Z[sup 0] to light quark pairs using 150,000 events recorded in the SLD experiment at SLAC. The highly polarized electron beam produced by the SLC is used to tag quark and antiquark jets, and a signed impact parameter technique is employed to reject heavy flavor events. Charged hadrons are identified in the SLD Cherenkov Ring Imaging Detector (CRID) and[Lambda]/[bar[Lambda]] are reconstructed using their charged decay modes. In a high purity sample of quark jets, the baryon momentum spectrum is harder that that of the antibaryon, and conversely for a sample of antiquark jets, supporting the hypothesis that the faster particles in jets are more likely to carry the primary quark or antiquark from the Z[sup 0] decay. Similarly, more high momentum K[sup -] that K[sup+] are observed in quark jets and conversely for antiquark jets, consistent with the hypothesis that leading K[sup[+-]] are produced predominantly in s[bar s] events rather than[ital u][bar[ital u]] events.
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 : Oxana Smirnova
Publisher :
ISBN 13 : 9789162821838
Total Pages : 78 pages
Book Rating : 4.8/5 (218 download)
Download or read book Studies of the Fragmentation Process in Hadronic Decays of Z0 Boson written by Oxana Smirnova and published by . This book was released on 1996 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : J. Coller
Publisher :
ISBN 13 :
Total Pages : 13 pages
Book Rating : 4.:/5 (316 download)
Download or read book A Measurement of Bottom Quark Production in Z Boson Hadronic Decays written by J. Coller and published by . This book was released on 2003 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: A precise measurement of R{sub b}, the fraction of hadronic decays of the Z{sup 0} boson into bottom quark pairs, will test the Standard Model of particle physics. By measuring R{sub b}, the coupling between the Z{sup 0} boson and bottom quarks can be investigated. The strength of this coupling is sensitive to the top quark mass and to physics which lies outside the Standard Model. This thesis presents a measurement of R{sub b} made at the Stanford Linear Accelerator Center with the SLD experiment. Approximately 196,000 hadronic events are used in the measurement. The data set was obtained during the 1997-98 SLD physics run. The selection of B hadrons for identifying Z{sup 0} {yields} b{bar b} events is based on the invariant mass of topologically reconstructed vertices separated from the primary vertex for the event. This reconstruction method identifies B hadrons with a high efficiency (49.9%) and high purity (98.0%). Each candidate Z{sup 0} {yields} b{bar b} event is split into two separate hemispheres which are analyzed independently. The efficiency for tagging B hadrons is extracted from the data, reducing the dependence on the Monte Carlo simulation for B hadron and b quark systematic errors. A measured result of R{sub b} = 0.2185 {+-} 0.0013{sub (stat)} {+-} 0.0022{sub (syst.)} is reported. This value is consistent within measurement errors with the Standard Model prediction of 0.2158. The significant of this measurement is discussed.
Author : Christos N Ktorides
Publisher : World Scientific
ISBN 13 : 981448542X
Total Pages : 423 pages
Book Rating : 4.8/5 (144 download)
Download or read book Correlations And Fluctuations In Qcd, Proceedings Of The 10th International Workshop On Multiparticle Production written by Christos N Ktorides and published by World Scientific. This book was released on 2003-09-05 with total page 423 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains a wide spectrum of articles which report the current research progress in topics concerning the dynamics of multiparticle production in high energy collision processes, with emphasis on nonperturbative aspects of QCD. The topics covered are: the phase diagram of QCD and related transitions; correlations and fluctuations in a variety of experiments involving multiparticle production (e+e- annihilation, pp collisions and heavy ion collisions); recent theoretical and experimental developments in interferometry and particle correlations; event-by-event fluctuations in high energy experiments; concepts of chaos and complexity in multiparticle dynamics and related phenomenology; relevant theoretical ideas based on QCD as a field theory.
