Computation of the nucleon properties in the chiral quark model

Baacke, Ju¨rgen; Sprenger, Hendrik
March 2000
AIP Conference Proceedings;2000, Vol. 508 Issue 1, p53
Academic Journal
Up to now the quark sea contributions to the energy and various physical observables in the chiral quark model have been formulated with the summation of levels. We will present a different technique for computing various physical observables, based on using the Euclidean Green functions and their K-spin partial wave reduction. In this framework it is not necessary to discretize the continuous spectrum by introducing a finite boundary. Besides this technical advantage such an alternative computation scheme makes it possible to obtain the numerical predictions of the model in an entirely independent way. Using this formulation we perform a new self-consistent computation of the nucleon state in the Nambu-Jona-Lasinio model. We use the Pauli-Villars cutoff to define the model. Our results for the nucleon energy, the mesonic profile, and various observables essentially confirm results obtained by other groups using this regularization. Similar techniques applied to Minkowskian Green functions can be used to compute the nucleon structure functions. © 2000 American Institute of Physics.


Related Articles

  • The Constituent Quark Model: a Status Report. Swanson, Eric S. // AIP Conference Proceedings;2002, Vol. 619 Issue 1, p327 

    A brief and biased overview of the status of the constituent quark model is presented. We concentrate on open issues and goals of hadronic phenomenology, rather than specific physics conundrums in the field. Modem attempts at addressing these issues are also presented.

  • On the mass hierarchy of fundamental particles. Tegen, R. // South African Journal of Science;May95, Vol. 91 Issue 5, p265 

    Discusses the mass hierarchy of all fundamental particles, leptons, baryons, and mesons and suggests an ordering principle based on the quark model of quantum chromodynamics. Background information on the Standard Model of elementary particles; Hadron masses; Sizes of particles in the Standard...

  • Heavy Quark Potential and Mass Spectra of Heavy Mesons. Ebert, D.; Faustov, R. N.; Galkin, V. O. // AIP Conference Proceedings;2002, Vol. 619 Issue 1, p336 

    The relativistic quark model is presented. The quark-antiquark potential for the Schrödinger-like equation is constructed with the account of retardation effects and one-loop radiative corrections. It consists of the one-gluon exchange part and the confining part which is the mixture of the...

  • A new dibaryon candidate (ΩΩ)[sub 0[sup +]]. Zhang, Z. Y.; Yu, Y. W.; Ching, C. R.; Ho, T. H. // AIP Conference Proceedings;2001, Vol. 597 Issue 1, p64 

    The structure of a new dibaryon (ΩΩ)[sub 0+] is predicted in the framework of the chiral SU(3) quark model by solving a resonating group method (RGM) equation. The binding energy of this dibaryon is around 100 MeV, the mean squared root of the distance between two Ωs is 0.84 fm and the...

  • Configuration Mixing of Quark States in Baryons. Saghai, B.; Li, Z. // Few-Body Systems;Jan2010, Vol. 47 Issue 1/2, p105 

    Mixing angles are used to describe the SU(6) ? O(3) symmetry breaking in [70, 1-] multiplet in the sector of the lowest mass nucleon resonances, which are investigated extensively in constituent quark models for baryon spectroscopy. The transition amplitudes for the meson photoproduction off...

  • Effective potential between two gluons from the scalar glueball. Buisseret, F.; Semay, C. // European Physical Journal A -- Hadrons & Nuclei;Jul2007, Vol. 33 Issue 1, p87 

    Starting from the 0++ glueball mass and wave function computed from lattice QCD, we compute the local potential between two constituent gluons. Since the properties of constituent gluons are still a matter of research, we allow for them to be either massless, or massive with a mass around...

  • Nucleon Magnetic Moments in the Quasi-Potential Quark Model. Shul�ga, S.; Il�icheva, T. // Russian Physics Journal;Jan2005, Vol. 48 Issue 1, p39 

    The nucleon magnetic moments are calculated in the quasi-potential quark model. The main contribution to the nucleon magnetic moments equal to 3 and -2 (in units of the nuclear magneton) for the proton and neutron, respectively, comes from the SU(6) symmetrical spin-isospin component of the wave...

  • μpGEp/GMp and qF2p/F1p in a relativistic quark model. de Araújo, W. R. B.; Frederico, T.; Beyer, M.; Weber, H. J. // European Physical Journal A -- Hadrons & Nuclei;Aug2006, Vol. 29 Issue 2, p227 

    The possible zero of the proton electromagnetic form factor ratio G Ep/ G Mp is studied within a light-front quark model. The position of the zero is determined by the presence of a hard constituent quark component in the nucleon wave function. The description of the data for the ratios μp G...

  • PentaQuark Mass and Structure. Goldman, T.; Fan Wang; Jialun Ping; Di Qing // AIP Conference Proceedings;2006, Vol. 814 Issue 1, p325 

    The Quark Delocalization, Color Screening Model has successfully reproduced the binding energy and structure of 9- and 12-quark systems that are small nuclei, namely 3He and 4He, in a relativistic version. In a non-relativistic version it has successfully been applied to 6-quark systems to...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics