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Author:
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ISBN:
Category :
Languages : en
Pages : 1130
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Book Description
It has been recently shown that hadrons containing a single heavy quark exhibit a new flavor-spin symmetry of QCD. We discuss the implications of this symmetry for the masses and strong decay widths of such hadrons.
Author:
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ISBN:
Category :
Languages : en
Pages : 1130
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Book Description
It has been recently shown that hadrons containing a single heavy quark exhibit a new flavor-spin symmetry of QCD. We discuss the implications of this symmetry for the masses and strong decay widths of such hadrons.
Author: Nathan Isgur
Publisher:
ISBN:
Category : Hadrons
Languages : en
Pages : 11
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 37
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Book Description
New symmetries of the strong interactions appear in heavy quark physics which can be used to predict many properties of hadrons containing a single heavy quark. In this talk, I discuss some of the implications of this heavy quark symmetry for the spectroscopy and structure of baryons, as well as some of the potential uses of the new predictive power it bestows.
Author: Aneesh V. Manohar
Publisher: Cambridge University Press
ISBN: 9781009402118
Category : Science
Languages : en
Pages : 0
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Author: Ugo Gastaldi
Publisher: Springer Science & Business Media
ISBN: 1461307635
Category : Science
Languages : en
Pages : 443
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Book Description
The second course of the International School on Physics with Low Energy Antiprotons was held in Erice, Sicily at the Ettore Majorana Centre for Scientific Culture, from May 20 to May 31, 1987. The School is dedicated to physics accessible to experiments using low energy antiprotons, especially in view of operation of the LEAR facility at CERN with the upgraded antiproton source AAC (Antiproton Accumulator AA and Antiproton Collector ACOL). The first course in 1986 covered topics related to fundamental symmetries. This book contains the proceedings of the second course which focused on spectroscopy of light and heavy quarks. These proceedings contain both the tutorial lectures and contri butions presented by participants during the School. The papers are organized in four sections: The first section includes theoretical reviews. Section II contains experimental reviews and covers the results in meson spectroscopy from DM2, MARK III, GAMS and n-WA76. Section III presents the new meson spectroscopy experiments in pre paration at CERN and Fermilab: Crystal Barrel, OBELIX, Jetset and E760. Section IV is dedicated to LEAR and to future facilities where meson spectroscopy would be a principal component of the physics programme. We should like to thank Dr. Alberto Gabriele and the staff of the Ettore Majorana Centre who provided for a smooth running of the School and a very pleasant stay. We are particularly grateful to Mrs. Anne Marie Bugge for her crucial help during the preparation and running of the School and for the editing of these Proceedings.
Author:
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ISBN:
Category :
Languages : en
Pages : 22
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Book Description
This review covers many new experimental results on heavy flavor production and spectroscopy. It also shows some of the increasingly improved theoretical understanding of results in light of basic perturbative QCD and heavy quark symmetry. At the same time, there are some remaining discrepancies among experiments as well as significant missing information on some of the anticipated lowest lying heavy quark states. Most interesting, perhaps, are some clearly measured production effects awaiting full explanation.
Author: Matthias Neubert
Publisher:
ISBN:
Category : Heavy particles (Nuclear physics)
Languages : en
Pages : 137
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Author: Aneesh V. Manohar
Publisher: Cambridge University Press
ISBN: 1009402145
Category : Science
Languages : en
Pages : 205
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
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:
Publisher:
ISBN:
Category :
Languages : en
Pages : 549
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Book Description
New symmetries of the strong interactions appear in heavy quark physics. They can be used to predict many properties of hadrons containing a single heavy quark. Some of these predictions are expected to play an important role in determining the values of elements of the Cabibbo-Kobayashi-Maskawa matrix.
