P-wave baryons in the quark model

1978 ◽  
Vol 18 (11) ◽  
pp. 4187-4205 ◽  
Author(s):  
Nathan Isgur ◽  
Gabriel Karl
Keyword(s):  
Quark Model ◽  
P Wave

scholarly journals Understanding X(3862), X(3872), and X(3930) spectrum in a Friedrichs-model-like scheme

2018 ◽  
Vol 182 ◽  
pp. 02129
Author(s):  
Zhiguang Xiao ◽  
Zhi-Yong Zhou
Keyword(s):  
Quark Model ◽  
Good Accuracy ◽  
Bound State ◽  
P Wave ◽  
Hadron Interaction ◽  
Friedrichs Model ◽  
Charmonium States

In this talk, we review the method we proposed to use the Friedrichs-like model combined with QPC model to include the hadron interaction corrections to the spectrum predicted by the quark model, in particular the Godfrey-Isgur model. This method is then used on the first excited P-wave charmonium states, and X(3862), X(3872), and X(3930) state could be simultaneously produced with a quite good accuracy. The X(3872) state is shown to be a bound state with a large DD* continuum component. At the same time, the hc(2P) state is perdicted at about 3902 MeV with a pole width of about 54 MeV.

NON-LEPTONIC WEAK TRANSITIONS WITH ΔI = 1/2 RULE IN DIQUARK-QUARK MODEL USING THE PAULI-GÜRSEY SYMMETRY

1994 ◽  
Vol 09 (12) ◽  
pp. 1059-1069 ◽  
Author(s):  
K. SUZUKI ◽  
H. TOKI
Keyword(s):  
Quark Model ◽  
Ground State ◽  
Wave Functions ◽  
P Wave ◽  
Standard Process ◽  
Weak Process ◽  
Pion Emission ◽  
Spin Singlet ◽  
Weak Transitions

We study the non-leptonic weak transitions of ground state baryons in diquark-quark model. These weak transitions exhibit the ΔI = 1/2 rule, which is hard to account for in the standard weak process. If the diquark correlations are strong among flavor-antitriplet and spin-singlet pairs, we can make the weak transitions among diquarks followed by pion emission much stronger than the standard process. We estimate all the non-leptonic weak transitions of ground state baryons by assuming the Pauli-Gürsey symmetry together with the SU(6) wave functions. We can account for all the P-wave transition strengths quantitatively and hence the ΔI = 1/2 rule.

scholarly journals P-wave pentaquark and its decay in the quark model with instanton induced interaction

2006 ◽  
Vol 74 (5) ◽  
Author(s):  
Tetsuya Shinozaki ◽  
Makoto Oka ◽  
Sachiko Takeuchi
Keyword(s):  
Quark Model ◽  
P Wave

ON NONLEPTONIC DECAYS OF THE Λ0-HYPERON IN THE EFFECTIVE QUARK MODEL WITH CHIRAL U(3)×U(3) SYMMETRY

2007 ◽  
Vol 22 (10) ◽  
pp. 1835-1847 ◽  
Author(s):  
A. YA. BERDNIKOV ◽  
YA. A. BERDNIKOV ◽  
M. FABER ◽  
A. N. IVANOV ◽  
V. A. IVANOVA ◽  
...  
Keyword(s):  
Experimental Data ◽  
Quark Model ◽  
Rest Frame ◽  
Laboratory Frame ◽  
Decay Rates ◽  
P Wave ◽  
Angular Distributions ◽  
S Wave ◽  
Nonleptonic Decays ◽  
Theoretical Results

Within the effective quark model with chiral U (3) × U (3) symmetry we calculate the S-wave and P-wave amplitudes and the partial widths of the nonleptonic decays of the Λ0-hyperon, Λ0 → pπ- and Λ0 → nπ0. The theoretical results agree well with the experimental data. The angular distributions of the decay rates in dependence on the polarizations of baryons are analyzed both in the laboratory frame and in the rest frame of the Λ0-hyperon.

scholarly journals P-WAVE ΛN-ΣN COUPLING AND THE SPIN-ORBIT SPLITTING OF $_\Lambda^9 {\rm{Be}}$

2009 ◽  
Vol 24 (11n13) ◽  
pp. 1031-1034 ◽  
Author(s):  
Y. FUJIWARA ◽  
M. KOHNO ◽  
Y. SUZUKI
Keyword(s):  
Quark Model ◽  
Scalar Meson ◽  
P Wave ◽  
Meson Exchange ◽  
Spin Orbit ◽  
Orbit Splitting ◽  
Full Account ◽  
Baryon Interaction ◽  
Spin Orbit Splitting ◽  
Orbit Potential

We reexamine the spin-orbit splitting of [Formula: see text] excited states in terms of the SU6 quark-model baryon-baryon interaction. The previous folding procedure to generate the Λα spin-orbit potential from the quark-model ΛN LS resonating-group kernel predicted three to five times larger values for ΔEℓs = Ex(3/2+) - Ex(5/2+) in the model FSS and fss2. This time, we calculate Λα LS Born kernel, starting from the LS components of the nuclear-matter G-matrix for the Λ hyperon. This framework makes it possible to take full account of an important P-wave ΛN-ΣN coupling through the antisymmetric LS(-) force involved in the Fermi-Breit interaction. We find that the experimental value, [Formula: see text], is reproduced by the quark-model G-matrix LS interaction with a Fermi-momentum around kF = 1.0 fm -1, when the model FSS is used in the energy-independent renormalized RGM formalism. On the other hand, the model fss2 gives too large splitting of almost 200 keV, owing to the uncanceled contribution of the scalar-meson exchange LS components.

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