Topical Issue on Advances in the Physics of Excited Baryons
Author: Hans-Werner Hammer
Publisher:
Published: 2008
Total Pages: 2
ISBN-13:
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Author: Hans-Werner Hammer
Publisher:
Published: 2008
Total Pages: 2
ISBN-13:
DOWNLOAD EBOOKAuthor: Gary Adams
Publisher:
Published: 1989
Total Pages: 592
ISBN-13:
DOWNLOAD EBOOKAuthor: Charles Melby-Thompson
Publisher:
Published: 2005
Total Pages: 0
ISBN-13:
DOWNLOAD EBOOKAuthor: Dietmar W Menze
Publisher: World Scientific
Published: 1999-06-18
Total Pages: 894
ISBN-13: 9814543772
DOWNLOAD EBOOKThis volume encompasses current issues in the physics of baryons, including their spectroscopy and quark-gluon substructure, and investigations with electroweak and strong interacting probes. The topics covered are: Baryon and Meson Spectroscopy, Chiral Physics, Heavy Quarks, Deep Inelastic Scattering, Form Factors and Exclusive Processes, Hadron-Nucleon Interaction, Hadrons in Nuclear Medium, and Special Topics in the First and Second Resonance, as well as a special part on the current status of neutrino physics. Each topic begins with an Introduction and Overview so as to make the more specialized papers readily accessible to non-experts.
Author:
Publisher:
Published: 2012
Total Pages:
ISBN-13:
DOWNLOAD EBOOKThis is the final talk of NSTAR2011 conference. It is not a summary talk, but rather a looking forward to what still needs to be done in excited baryon physics. In particular, we need to hone our tools connecting experimental inputs with QCD. At present we rely on models that often have doubtful connections with the underlying theory, and this needs to be dramatically improved, if we are to reach definitive conclusions about the relevant degrees of freedom of excited baryons. Conclusions that we want to have by NSTAR2021.
Author:
Publisher:
Published: 1986
Total Pages:
ISBN-13:
DOWNLOAD EBOOKThe status of the theory of the low-energy approach to hadron structure is reviewed briefly by surveying a few relevant models. A few examples of tests needed to sort out the predictions of different models pertaining to the quark-gluon structure of hadrons are discussed, and given the resulting physics objectives, a few experimental options for excited baryon research at CFBAF are suggested. (LEW).
Author:
Publisher:
Published: 1986
Total Pages:
ISBN-13:
DOWNLOAD EBOOKSeveral important issues related to excited baryons are outlined. These include the questions of why to study electromagnetic excitation of baryons, which excited baryons to study, and what new physics to expect. Also considered are amplitude ambiguities for .gamma. BB* and theoretical problems of extracting the resonant amplitude. Excited baryons in nuclei and future experiments are considered. (LEW).
Author: Moshe Gai
Publisher:
Published: 1993
Total Pages: 506
ISBN-13: 9789814536950
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Published: 2011
Total Pages:
ISBN-13:
DOWNLOAD EBOOKA short review of current efforts to determine the highly excited state spectrum of QCD, and in particular baryons, using lattice QCD techniques is presented. The determination of the highly excited spectrum of QCD is a major theoretical and experimental challenge. The experimental investigation of the excited baryon spectrum has been a long-standing element of the hadronic-physics program, an important component of which is the search for so-called 'missing resonances', baryonic states predicted by the quark model based on three constituent quarks but which have not yet been observed experimentally. Should such states not be found, it may indicate that the baryon spectrum can be modeled with fewer effective degrees of freedom, such as in quark-diquark models. In the past decade, there has been an extensive program to collect data on electromagnetic production of one and two mesons at Jefferson Lab, MIT-Bates, LEGS, MAMI, ELSA, and GRAAL. To analyze these data, and thereby refine our knowledge of the baryon spectrum, a variety of physics analysis models have been developed at Bonn, George Washington University, Jefferson Laboratory and Mainz. To provide a theoretical determination and interpretation of the spectrum, ab initio computations within lattice QCD have been used. Historically, the calculation of the masses of the lowest-lying states, for both baryons and mesons, has been a benchmark calculation of this discretized, finite-volume computational approach, where the aim is well-understood control over the various systematic errors that enter into a calculation; for a recent review. However, there is now increasing effort aimed at calculating the excited states of the theory, with several groups presenting investigations of the low-lying excited baryon spectrum, using a variety of discretizations, numbers of quark flavors, interpolating operators, and fitting methodologies. Some aspects of these calculations remain unresolved and are the subject of intense effort, notably the ordering of the Roper resonance in the low-lying Nucleon spectrum.
Author: Anthony W Thomas
Publisher: World Scientific
Published: 1999-04-01
Total Pages: 316
ISBN-13: 9814544094
DOWNLOAD EBOOKOne of the most fundamental questions in understanding strong interaction is whether or not quarks and gluons play a significant role in nuclear systems. At high densities we need to explore the existence and nature of a deconfinement phase transition. At lower densities we wish to study the changes in the properties of a hadron particle as mass and electroweak form factors, when it is immersed in nuclear matter. Finally, we may even ask whether the internal structure of the nucleon plays a role in the binding and properties of finite nuclei.On the theoretical side the issues raised here are of concern to a very broad community, from those working in traditional many-body physics, to those building effective field theories, to those working in lattice QCD. Experimentally, there are many accelerators, mature, new and planned, which can offer insight into this field — from SLAC to HERA, COSY, CELSIUS and TJNAF. This workshop brought together key figures from all areas of theoretical and experimental physics concerned with this fundamental problem.