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Author : D. J. Mellor
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (597 download)
Download or read book A Measurement of Bottom Hadron Lifetimes written by D. J. Mellor and published by . This book was released on 1986 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : David John Mellor
Publisher :
ISBN 13 :
Total Pages : 190 pages
Book Rating : 4.:/5 (863 download)
Download or read book A Measurement of Bottom Hadron Lifetimes in E+e- Annihilations written by David John Mellor and published by . This book was released on 1986 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Daniel Edward Klem
Publisher :
ISBN 13 :
Total Pages : 304 pages
Book Rating : 4.F/5 ( download)
Download or read book A Measurement of the Average Lifetime of Hadrons Containing Bottom Quarks written by Daniel Edward Klem and published by . This book was released on 1986 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:
![Download Measurements of Bottom Hadron Lifetimes and the [Lambda][superior 0] Production Rate in [Zeta][superior 0] [right Pointing Arrow] Bb[macron] Events Using Data from the OPAL Experiment PDF Online Free](https://books.google.com/books/content/images/frontcover/oRwCswEACAAJ?fife=w200-h370)
Author : Mark Pearce
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (911 download)
Download or read book Measurements of Bottom Hadron Lifetimes and the [Lambda][superior 0] Production Rate in [Zeta][superior 0] [right Pointing Arrow] Bb[macron] Events Using Data from the OPAL Experiment written by Mark Pearce and published by . This book was released on 1996 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Renʹe Ashwin Ong
Publisher :
ISBN 13 :
Total Pages : 266 pages
Book Rating : 4.F/5 ( download)
Download or read book Measurement of the B Hadron Lifetime written by Renʹe Ashwin Ong and published by . This book was released on 1987 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Donald Hideo Fujino
Publisher :
ISBN 13 :
Total Pages : 386 pages
Book Rating : 4.:/5 (387 download)
Download or read book Measurement of the Bottom Hadron Lifetime at the Z0 Resonance written by Donald Hideo Fujino and published by . This book was released on 1992 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 8 pages
Book Rating : 4.:/5 (873 download)
Download or read book Average and Individual B Hadron Lifetimes at CDF. written by and published by . This book was released on 1993 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bottom hadron lifetime measurements have been performed using B → J/[psi] → [mu]+[mu]−X dacays recorded with the collider Detector at Fermilab (CDF) during the first half of the 1992--1993 Tevatron collider run. These decays have been reconstructed in a silicon vertex detector. Using 5344 ± 73 inclusive J/[psi] events, the average lifetime of all bottom hadrons produced in 1.8 TeV p{bar p} collisions and decaying into a J/[psi] events, the average lifetime of all bottom hadrons produced in 1.8 TeV p{bar p} collisions and decaying into a J/[psi] is found to be 1.46 ± 0.06(stat) ±0.06(sys)ps. The charged and neutral B meson lifetimes have been measured separately using 75 ±10 (charged) and 61±9 (neutral) fully reconstructed decays; preliminary results are [tau]{sup ±} = 1.63 ± 0.21(stat) ± 0.16(sys) ± 0. 10(sys) ps, yielding a lifetime ratio of [tau]{sup ±}/[tau]° = 1.06{plus_minus} 0.20(stat){plus_minus}0.12(sys).
Author :
Publisher :
ISBN 13 :
Total Pages : 214 pages
Book Rating : 4.:/5 (893 download)
Download or read book Measurement of the Bottom Hadron Lifetime at the Z Sup 0 Resonancce written by and published by . This book was released on 1992 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: We have measured the bottom hadron lifetime from b{bar b} events produced at the Z° resonance. Using the precision vertex detectors of the Mark II detector at the Stanford Linear Collider, we developed an impact parameter tag to identify bottom hadrons. The vertex tracking system resolved impact parameters to 30 [mu]m for high momentum tracks, and 70 [mu]m for tracks with a momentum of 1 GeV. We selected B hadrons with an efficiency of 40% and a sample purity of 80%, by requiring there be at least two tracks in a single jet that significantly miss the Z° decay vertex. From a total of 208 hadronic Z° events collected by the Mark II detector in 1990, we tagged 53 jets, of which 22 came from 11 double-tagged events. The jets opposite the tagged ones, referred as the untagged'' sample, are rich in B hadrons and unbiased in B decay times. The variable [Sigma][delta] is the sum of impact parameters from tracks in the jet, and contains vital information on the B decay time. We measured the B lifetime from a one-parameter likelihood fit to the untagged [Sigma][delta] distribution, obtaining [tau]{sub b} = 1.53{sub -0.45}{sup +0.55}{plus minus}0.16 ps which agrees with the current world average. The first error is statistical and the second is systematic. The systematic error was dominated by uncertainties in the track resolution function. As a check, we also obtained consistent results using the [Sigma][delta] distribution from the tagged jets and from the entire hadronic sample without any bottom enrichment.
Download or read book Spectroscopy and Lifetime of Bottom and Charm Hadrons written by and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: There are several motivations for studying masses and lifetimes of the hadrons containing a heavy quark, either the bottom or the charm quark. First, the mass and the lifetime are fundamental properties of an elementary particle. Second, the spectroscopy of hadrons gives insights into the QCD potential between quarks. In particular, a symmetry exists for heavy hadrons when the heavy quark mass is taken to be infinite, providing a powerful tool to predict and understand properties of those heavy hadrons. Third, studies of the lifetimes of heavy hadrons probe their decay mechanisms. A measurement of the lifetime, or the total decay width, is necessary when the authors extract magnitudes of elements of the Kobayashi-Maskawa matrix. Again, in the limit of an infinite heavy quark mass things become simple and decay of a heavy hadron should be the decay of the heavy quark Q. This leads to a prediction that all hadrons containing the heavy quark Q should have the same lifetime, that of the quark Q. This is far from reality in the case of charm hadrons, where the D meson lifetime is about 2.5 times longer than the D° meson lifetime. Perhaps the charm quark is not heavy enough. The simple quark decay picture should be a better approximation for the bottom hadrons because of the larger b quark mass. On the experimental side, the measurements and knowledge of the heavy hadrons (in particular bottom hadrons) have significantly improved over the last decade, thanks to high statistics data accumulated by various experiments. The authors shall review recent developments in these studies in the remainder of this manuscript.
Author : Kok Khoo Phua
Publisher : World Scientific
ISBN 13 : 9814569410
Total Pages : 1583 pages
Book Rating : 4.8/5 (145 download)
Download or read book High Energy Physics - Proceedings Of The 25th International Conference (In 2 Volumes) written by Kok Khoo Phua and published by World Scientific. This book was released on 1991-07-15 with total page 1583 pages. Available in PDF, EPUB and Kindle. Book excerpt: This proceedings contains the talks delivered at the plenary and parallel sessions. Topics covered include e⁺e⁻ Physics at Z0, String Theory and Theory of Extended Objects, High Energy pp Physics, Non-Accelerator Particle Physics, Conformal Field Theory, e⁺e⁻ Physics below Z⁰, Structure Functions and Deep Inelastic Scattering, Neutrino Physics, Recent Developments in 2-Dimensional Gravity, Lattice Gauge Theory and Computer Simulations, CP Violation , Accelerator Physics, Cosmology and Particle Physics, Interface Between Particle and Condensed Matter Physics, Detector R&D, and Astroparticle Physics.
Author : Allen Christopher Caldwell
Publisher :
ISBN 13 :
Total Pages : 414 pages
Book Rating : 4.:/5 (89 download)
Download or read book Determination of the Average Lifetime of Bottom Hadrons from Vertex Reconstruction written by Allen Christopher Caldwell and published by . This book was released on 1987 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : K Huitu
Publisher : CRC Press
ISBN 13 : 9780750306614
Total Pages : 1112 pages
Book Rating : 4.3/5 (66 download)
Download or read book High Energy Physics 99 Proceedings of the International Europhysics Conference on High Energy Physics, Tampere, Finland, 15-21 July 1999 written by K Huitu and published by CRC Press. This book was released on 2000-01-01 with total page 1112 pages. Available in PDF, EPUB and Kindle. Book excerpt: High Energy Physics 99 contains the 18 invited plenary presentations and 250 contributions to parallel sessions presented at the International Europhysics Conference on High Energy Physics. The book provides a comprehensive survey of the latest developments in high energy physics. Topics discussed include hard high energy, structure functions, soft interactions, heavy flavor, the standard model, hadron spectroscopy, neutrino masses, particle astrophysics, field theory, and detector development.
Author : Zygmunt Ajduk
Publisher : World Scientific
ISBN 13 : 9814547107
Total Pages : 1878 pages
Book Rating : 4.8/5 (145 download)
Download or read book Proceedings Of The 28th International Conference On High Energy Physics (In 2 Volumes) written by Zygmunt Ajduk and published by World Scientific. This book was released on 1997-04-11 with total page 1878 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 28th conference from the Rochester series was the major high energy physics conference in 1996. Volume one contains short reports on new theoretical and experimental results. Volume two consists of the review talks presented in the plenary sessions.
Author : Robert Gibbs Jacobsen
Publisher :
ISBN 13 :
Total Pages : 332 pages
Book Rating : 4.F/5 ( download)
Download or read book A Measurement of the Branching Ratio of the Z Boson to Bottom Quarks Using Precision Tracking written by Robert Gibbs Jacobsen and published by . This book was released on 1991 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Albert De Roeck
Publisher : World Scientific
ISBN 13 : 9814545120
Total Pages : 778 pages
Book Rating : 4.8/5 (145 download)
Download or read book Lepton-photon Interactions, Lp'97 - Proceedings Of The Xviii International Symposium written by Albert De Roeck and published by World Scientific. This book was released on 1998-07-22 with total page 778 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the proceedings of the XVIII International Symposium on Lepton-Photon Interactions. It contains 30 review papers on the latest developments by experts in the field. The subjects cover the structure of photons and hadrons, progress in QCD and diffraction, heavy quark (c, b, t) physics, electroweak precision measurements and tests, CP violation, neutrino physics, searches for new particles and phenomena, cosmology, progress in theory and physics at future colliders.
Author : Dale Steven Koetke
Publisher :
ISBN 13 :
Total Pages : 606 pages
Book Rating : 4.F/5 ( download)
Download or read book A Measurement of the Z0 Hadronic Branching Fraction to Bottom Quarks and the Charged Multiplicity of Bottom Quark Events Using Precision Vertex Detectors at Ecm written by Dale Steven Koetke and published by . This book was released on 1992 with total page 606 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Owen J. Hayes
Publisher :
ISBN 13 :
Total Pages : 224 pages
Book Rating : 4.:/5 (89 download)
Download or read book Measurement of the Lambda-b Baryon Lifetime in Z Decays written by Owen J. Hayes and published by . This book was released on 1999 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:
