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We study the phase structure of dense hadronic matter including $\Delta(1232)$ as well as N(939) based on the parity partner structure, where the baryons have their chiral partners with a certain amount of chiral invariant masses. We show…

Nuclear Theory · Physics 2018-06-13 Yusuke Takeda , Youngman Kim , Masayasu Harada

The implications of one gluon exchange generated configuration mixing in the Chiral Quark Model ($\chi$QM$_{gcm}$) with SU(3) and axial U(1) symmetry breakings are discussed in the context of proton flavor and spin structure as well as the…

High Energy Physics - Phenomenology · Physics 2009-10-31 Harleen Dahiya , Manmohan Gupta

Superheavy nuclei are investigated in a nonlinear chiral SU(3)-model. The proton number Z=120 and neutron numbers of N=172, 184 and 198 are predicted to be magic. The charge distributions and alpha-decay chains hint towards a hollow…

Nuclear Theory · Physics 2007-05-23 Ch. Beckmann , P. Papazoglou , D. Zschiesche , S. Schramm , H. Stoecker , W. Greiner

The most strange dibaryon $\Omega\Omega$ with quantum numbers $S=-6$, $I=0$, and $J^{P}=0^{+},~1^{-},~2^{+},~3^{-}$ is reanalyzed in the framework of quark delocalization color screening model (QDCSM) and chiral quark model (ChQM). The…

High Energy Physics - Phenomenology · Physics 2020-04-08 Hongxia Huang , Xinmei Zhu , Jialun Ping

Beyond the spontaneous chiral symmetry breaking scale light and strange baryons should be considered as systems of three constituent quarks with an effective confining interaction and a chiral interaction that is mediated by the octet of…

High Energy Physics - Phenomenology · Physics 2009-10-28 L. Ya. Glozman

Extension of the separation geometry model of baryon structure from physics/0109024 and hep-ph/0201270 to the spin 2/3 Delta baryons. Theoretically derived masses in Mev; $\Delta^{++}=1240.0, \Delta^-=1243.4, \Delta^0=1233.9,…

High Energy Physics - Phenomenology · Physics 2007-05-23 G. Filewood

In this talk we review the important role played by chiral SU(3) symmetry in hadron physics. Exciting new results on the formation of baryon resonances as implied by chiral coupled-channel dynamics are presented and discussed. The results…

Nuclear Theory · Physics 2010-12-16 Matthias F. M. Lutz

Using a covariant spectator quark model that describes the recent lattice QCD data for the $\Delta$ electromagnetic form factors and all available experimental data on $\gamma N \to \Delta$ transitions, we analyze the charge and magnetic…

Nuclear Theory · Physics 2012-11-22 G. Ramalho , M. T. Pena , A. Stadler

\pi and \eta decay modes of light baryon resonances are investigated within a chiral quark model whose hyperfine interaction is based on Goldstone-boson exchange. For the decay mechanism a modified version of the 3P0 model is employed. Our…

Nuclear Theory · Physics 2009-11-06 L. Theussl , R. F. Wagenbrunn , B. Desplanques , W. Plessas

Low and high energy properties of the pion are reviewed in the framework of chiral quark models. Particular emphasis is put on the simplest version of the SU(2) NJL model as prototype. The role of gauge invariance in this kind of…

High Energy Physics - Phenomenology · Physics 2007-05-23 E. Ruiz Arriola

The chiral SU(3) quark model is extended to include coupling between vector chiral field and quarks. By using this model, the phase shifts of NN scattering for different partial waves are studied. The results are very similar to those of…

Nuclear Theory · Physics 2009-12-14 L. R. Dai , Z. Y. Zhang , Y. W. Yu , P. Wang

We give the comparisons between the chiral SU(3) quark model and the extended chiral SU(3) quark model. The results show that the phase shifts of NN scattering are very similar. However, the short range mechanisms of nucleon-nucleon…

Nuclear Theory · Physics 2009-11-10 L. R. Dai , Z. Y. Zhang , Y. W. Yu

In a previous article, the 4D half-skyrmion (or 5D dyonic salt) structure of dense baryonic matter described in crystalline configuration in the large $N_c$ limit was shown to impact nontrivially on how anti-kaons behave in compressed…

Nuclear Theory · Physics 2011-02-23 Hyun Kyu Lee , Byung-Yoon Park , Mannque Rho

The implications of chiral $SU(3)_L \times SU(3)_R$ symmetry and heavy quark symmetry for the radiative decays $D^{*0}\to D^0\gamma$, $D^{*+}\to D^+\gamma$, and $D_s^*\to D_s\gamma$ are discussed. Particular attention is paid to $SU(3)$…

High Energy Physics - Phenomenology · Physics 2008-11-26 J. F. Amundson , C. G. Boyd , E. Jenkins , M. Luke , A. V. Manohar , J. L. Rosner , M. J. Savage , M. B. Wise

We investigate the strangeness in the framework of chiral models, such as the Skyrmion, MIT bag, chiral bag and superqualiton models, with SU(3) flavor group structure. We review the recent progresses in both the theoretical paradigm and…

High Energy Physics - Phenomenology · Physics 2009-11-07 Soon-Tae Hong , Young-Jai Park

Information on the intrinsic deformation of the proton can be obtained by studying the electromagnetic p-->Delta+ quadrupole transition. Recent experiments have shown that the electric quadrupole (E2) strength in gamma p --> Delta+ is about…

High Energy Physics - Phenomenology · Physics 2007-05-23 A. J. Buchmann

We calculate the complete $T$ matrices of the elastic nucleon-nucleon scattering up to third order in SU(3) heavy baryon chiral perturbation theory. The phase shifts with orbital angular momentum $L\geq 2$ and the mixing angles with $J\geq…

Nuclear Theory · Physics 2022-01-03 Bo-Lin Huang , Jian-Bo Cheng , Shi-Lin Zhu

The Chiral Quark-Soliton Model of nucleons is based on two ideas: 1) the major role of spontaneous chiral symmetry breaking in hadron physics and 2) the relevance of the large number of colours limit for the real world. In these lectures I…

High Energy Physics - Phenomenology · Physics 2007-05-23 Dmitri Diakonov

The last decade has seen a marked shift in how the internal structure of hadrons is understood. Modern experimental facilities, new theoretical techniques for the continuum bound-state problem and progress with lattice-regularised QCD have…

The chiral magnetic effect is a novel quantum phenomenon proposed for high-energy nuclear collisions but which has yet to be observed. We quantify the axial charge relaxation time, due to sphalerons, which enters in simulations of this…

High Energy Physics - Phenomenology · Physics 2022-02-08 Joseph I. Kapusta , Ermal Rrapaj , Serge Rudaz