positive parity
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2021 ◽  
pp. 122342
Author(s):  
Saher M. Mutsher ◽  
Fadhil I. Sharrad ◽  
Emad A. Salman
Keyword(s):  

2021 ◽  
Vol 104 (3) ◽  
Author(s):  
Tanjib Khan ◽  
David Richards ◽  
Frank Winter

Author(s):  
Umakant Lamani ◽  
Pragya Das ◽  
S. G. Wahid

The phenomenon of signature inversion in positive parity yrast states of [Formula: see text]I nuclei has been studied using the Particle Rotor Model (PRM) calculations. The experimentally observed signature inversion is well reproduced from the PRM calculations. The change in the value of a triaxial parameter [Formula: see text] was observed after the inversion. The PRM calculations were also used to describe the reduced transition probabilities. The derived change in the value of “[Formula: see text]” (in Lund convention) after inversion is interpreted as the change in nuclear shape from near triaxial to tending towards noncollective oblate.


Symmetry ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 751
Author(s):  
Luciano Maiani ◽  
Antonio Davide Polosa ◽  
Verónica Riquer

The charmonium-like exotic states Y(4230) and the less known Y(4320), produced in e+e− collisions, are sources of positive parity exotic hadrons in association with photons or pseudoscalar mesons. We analyze the radiative and pion decay channels in the compact tetraquark scheme, with a method that proves to work equally well in the most studied D∗→γ/π+D decays. The decay of the vector Y into a pion and a Zc state requires a flip of charge conjugation and isospin that is described appropriately in the formalism used. Rates are found to depend on the fifth power of pion momentum, which would make the final states πZc(4020) strongly suppressed with respect to πZc(3900). The agreement with BES III data would be improved considering the πZc(4020) events to be fed by the tail of the Y(4320) resonance under the Y(4230). These results should renovate the interest in further clarifying the emerging experimental picture in this mass region.


Author(s):  
O. Nouri ◽  
R. Razavi ◽  
A. Rahmatinejad ◽  
S. Mohammadi

The ratios of negative-to-positive parity level densities in <sup>94,96,98</sup>Mo isotopes are calculated using a microscopic formalism based on the BCS model. In this calculation, the single-particle energies are obtained with the Nilsson model. Mass number, shell and deformation effects on the parity equilibration phenomena in these isotopes are discussed in this work.


2020 ◽  
Vol 95 (9) ◽  
pp. 095304
Author(s):  
S S Tiwary ◽  
H P Sharma ◽  
S Chakraborty ◽  
C Majumder ◽  
A K Gupta ◽  
...  
Keyword(s):  

2020 ◽  
Vol 806 ◽  
pp. 135488 ◽  
Author(s):  
M. Venhart ◽  
M. Balogh ◽  
A. Herzáň ◽  
J.L. Wood ◽  
F.A. Ali ◽  
...  

2020 ◽  
Vol 124 (19) ◽  
Author(s):  
Y. Liu ◽  
Y. L. Ye ◽  
J. L. Lou ◽  
X. F. Yang ◽  
T. Baba ◽  
...  

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