scholarly journals BARYONIC RESONANCES FROM BARYON DECUPLET-MESON OCTET INTERACTION

2005 ◽  
Vol 20 (08n09) ◽  
pp. 1826-1829
Author(s):  
M. J. VICENTE VACAS ◽  
E. OSET ◽  
SOURAV SARKAR
Keyword(s):  
Fair Agreement ◽  
S Wave ◽  
Wave Interactions ◽  
Pseudoscalar Mesons ◽  
Meson Octet ◽  
Coupled Channel

The s-wave interactions of the baryon decuplet with the octet of pseudoscalar mesons is studied in a unitarized coupled channel approach. We obtain a fair agreement for mass and width of several [Formula: see text] resonances. In particular, the Ξ(1820), the Λ(1520) and the Σ(1670) states are well reproduced. Other resonances are predicted and also the couplings of the observed resonances to the various channels are evaluated.

scholarly journals Two-nucleon S -wave interactions at the SU(3) flavor-symmetric point with mud≈msphys : A first lattice QCD calculation with the stochastic Laplacian Heaviside method

2021 ◽  
Vol 103 (1) ◽  
Author(s):  
Ben Hörz ◽  
Dean Howarth ◽  
Enrico Rinaldi ◽  
Andrew Hanlon ◽  
Chia Cheng Chang ◽  
...  
Keyword(s):  
Lattice Qcd ◽  
S Wave ◽  
Wave Interactions ◽  
Symmetric Point

scholarly journals Non-perturbative chiral approach to S-wave interactions

1998 ◽  
Vol 635 (1-2) ◽  
pp. 99-120 ◽  
Author(s):  
E. Oset ◽  
A. Ramos
Keyword(s):  
S Wave ◽  
Wave Interactions

scholarly journals S-WAVE BOTTOM TETRAQUARKS

2010 ◽  
Vol 19 (11) ◽  
pp. 2181-2188 ◽  
Author(s):  
S. M. GERASYUTA ◽  
V. I. KOCHKIN
Keyword(s):  
Bottom Quarks ◽  
S Wave ◽  
The Masses ◽  
Coupled Channel ◽  
Meson States ◽  
Channel Formalism

The relativistic four-quark equations are found in the framework of coupled-channel formalism. The dynamical mixing of the meson–meson states with the four-quark states is considered. The four-quark amplitudes of the tetraquarks, including u, d, s, and bottom quarks, are constructed. The poles of these amplitudes determine the masses and widths of S-wave bottom tetraquarks.

S-wave interactions of K̄ and η mesons in nuclear matter

1997 ◽  
Vol 625 (1-2) ◽  
pp. 287-306 ◽  
Author(s):  
T. Waas ◽  
W. Weise
Keyword(s):  
Nuclear Matter ◽  
S Wave ◽  
Wave Interactions

scholarly journals Thermal study of a coupled-channel system: a brief review

2021 ◽  
Vol 57 (2) ◽  
Author(s):  
Pok Man Lo
Keyword(s):  
Density Of States ◽  
Particle Dynamics ◽  
Thermal Study ◽  
S Wave ◽  
Channel System ◽  
System A ◽  
S Matrix ◽  
Coupled Channel

AbstractWe demonstrate the construction of a density of states from the S-matrix describing a coupled-channel (S-wave $$\pi \pi , K {\bar{K}}$$ π π , K K ¯ ) system, and examine the influences from various structures of particle dynamics: poles, roots, and Riemann sheets.

scholarly journals Nπ scattering in the Roper channel

2018 ◽  
Vol 175 ◽  
pp. 05004
Author(s):  
M. Padmanath ◽  
C. B. Lang ◽  
Luka Leskovec ◽  
Sasa Prelovsek
Keyword(s):  
Lattice Qcd ◽  
Positive Parity ◽  
Roper Resonance ◽  
S Wave ◽  
Lattice Spectrum ◽  
Lattice Calculations ◽  
Channel Effects ◽  
Technical Details ◽  
Elastic Approximation ◽  
Coupled Channel

We present results from our recent lattice QCD study of Nπ scattering in the positive-parity nucleon channel, where the puzzling Roper resonance N*(1440) resides in experiment. Using a variety of hadron operators, that include qqq-like, Nπ in p-wave and Nσ in s-wave, we systematically extract the excited lattice spectrum in the nucleon channel up to 1.65 GeV. Our lattice results indicate that Nπ scattering in the elastic approximation alone does not describe a low-lying Roper. Coupled channel effects between Nπ and Nππ seem to be crucial to render a low-lying Roper in experiment, reinforcing the notion that this state could be a dynamically generated resonance. After giving a brief motivation for studying the Roper channel and the relevant technical details to this study, we will discuss the results and the conclusions based on our lattice investigation and in comparison with other lattice calculations.

scholarly journals s-wave charmed baryon resonances from a coupled-channel approach with heavy quark symmetry

2009 ◽  
Vol 79 (5) ◽  
Author(s):  
C. García-Recio ◽  
V. K. Magas ◽  
T. Mizutani ◽  
J. Nieves ◽  
A. Ramos ◽  
...  
Keyword(s):  
Heavy Quark ◽  
S Wave ◽  
Charmed Baryon ◽  
Heavy Quark Symmetry ◽  
Coupled Channel ◽  
Baryon Resonances

Coupled channel study on the S-wave interaction

1974 ◽  
Vol 68 (2) ◽  
pp. 397-412 ◽  
Author(s):  
N.O. Johannesson ◽  
J.L. Petersen
Keyword(s):  
Wave Interaction ◽  
S Wave ◽  
Coupled Channel
Sign in / Sign up

Export Citation Format

Share Document