Semileptonic Decays of Heavy Quarks in Quantum Chromodynamics
Author | : E. Pietarinen |
Publisher | : |
Total Pages | : 27 |
Release | : 1979 |
Genre | : |
ISBN | : |
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Author | : E. Pietarinen |
Publisher | : |
Total Pages | : 27 |
Release | : 1979 |
Genre | : |
ISBN | : |
Author | : Aneesh V. Manohar |
Publisher | : Cambridge University Press |
Total Pages | : 203 |
Release | : 2000-03-28 |
Genre | : Science |
ISBN | : 0521642418 |
A clear and original introductory 2000 text on the physics of heavy quarks, written by two world leading experts.
Author | : Jennifer A. Thomas |
Publisher | : |
Total Pages | : 127 |
Release | : 1983 |
Genre | : Particles (Nuclear physics) |
ISBN | : |
Author | : J. A. Thomas |
Publisher | : |
Total Pages | : 0 |
Release | : 1983 |
Genre | : Particles (Nuclear physics) |
ISBN | : |
Author | : G.V Efimov |
Publisher | : CRC Press |
Total Pages | : 196 |
Release | : 1993-01-01 |
Genre | : Science |
ISBN | : 9780750302401 |
Filling the gap in the literature on low-energy quark models, The Quark Confinement Model of Hadrons investigates confinement effects in the low-energy regions of particle physics using the methods of nonlocal quantum field theory. It also elucidates their role in describing microscopic quantities that characterize hadron-hadron interactions. The authors present a quark confinement model to describe the low-energy physics of light hadrons. Hadrons are treated as collective colorless excitations of quark-gluon interactions while the quark confinement is to be provided by averaging over gluon backgrounds. The model is shown to reproduce the low-energy relations of chiral theory in the case of null momenta and, in addition, allow the researcher to obtain more sophisticated hadron characteristics, such as slope parameters and form factors. Presenting a unified view on a number of low-energy phenomena, The Quark Confinement Model of Hadrons enables an understanding of problems related to the treatment of large distances within quantum chromodynamics.
Author | : A. Czarnecki |
Publisher | : |
Total Pages | : 6 |
Release | : 1989 |
Genre | : Leptons (Nuclear physics) |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : 32 |
Release | : 1991 |
Genre | : |
ISBN | : |
Heavy quarks can expose new symmetries and novel phenomena in QCD not apparent in ordinary hadronic systems. In these lectures I discuss the use of effective-Lagrangian and light-cone Fock methods to analyze exclusive heavy hadron decays such as [Upsilon] → p{bar p} and B → [pi][pi], and also to derive effective Schroedinger and Dirac equations for heavy quark systems. Two contributions to the heavy quark structure functions of the proton and other light hadrons are identified: an extrinsic'' contribution associated with leading twist QCD evolution of the gluon distribution, and a higher twist intrinsic'' contribution due to the hardness of high-mass fluctuations of multi-gluon correlations in hadronic wavefunctions. A non-perturbative calculation of the heavy quark distribution of a meson in QCD in one space and one time is presented. The intrinsic higher twist contributions to the pion and proton structure functions can dominate the hadronic production of heavy quark systems at large longitudinal momentum fraction x{sub F} and give anomalous contributions to the quark structure functions of ordinary hadrons at large x{sub bj}. I also discuss a number of ways in which heavy quark production in nuclear targets can test fundamental QCD phenomena and provide constraints on hadronic wavefunctions. The topics include color transparency, finite formation time, and predictions for charm production at threshold, including nuclear-bound quarkonium. I also discuss a number of QCD mechanisms for the suppression of J/[psi] and [Upsilon] production in nuclear collisions, including gluon shadowing, the peripheral excitation of intrinsic heavy quark components at large x{sub F}, and the coalescence of heavy quarks with co-moving spectators at low x{sub F}.
Author | : Lodovico Antonio Muratori |
Publisher | : |
Total Pages | : 14 |
Release | : 1902 |
Genre | : |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : |
Release | : 1998 |
Genre | : |
ISBN | : |
The author identifies a source of Lambda{sub QCD}/m{sub Q} corrections to the assumption of quark-hadron duality in the application of heavy quark methods to inclusive heavy quark semileptonic decays Q --> ql{anti {nu}}{sub l}. These corrections could substantially affect the accuracy of such methods in practical applications and in particular compromise their utility for the extraction of the Cabibbo-Kobayashi-Maskawa matrix element V{sub cb}.
Author | : Kevin Andrew John Forbes |
Publisher | : |
Total Pages | : |
Release | : 1994 |
Genre | : |
ISBN | : |