Role of Equal-Time Axial-Vector Current Commutators in Sum Rules

1966 ◽  
Vol 16 (13) ◽  
pp. 598-600 ◽  
Author(s):  
H. Suura ◽  
L. M. Simmons
Keyword(s):  
Sum Rules ◽  
Axial Vector ◽  
Vector Current ◽  
Axial Vector Current ◽  
Equal Time

scholarly journals Analysis of the Zc(4200) as axial-vector molecule-like state

2015 ◽  
Vol 30 (30) ◽  
pp. 1550168 ◽  
Author(s):  
Zhi-Gang Wang
Keyword(s):  
Experimental Data ◽  
Sum Rules ◽  
Axial Vector ◽  
Vector Current ◽  
Axial Vector Current ◽  
Qcd Sum Rules ◽  
Color Octet ◽  
Type Molecule

In this paper, we assume the [Formula: see text] as the color octet–octet type axial-vector molecule-like state, and construct the color octet–octet type axial-vector current to study its mass and width with the QCD sum rules. The numerical values [Formula: see text] and [Formula: see text] are consistent with the experimental data [Formula: see text] and [Formula: see text], and support assigning the [Formula: see text] to be the color octet–octet type molecule-like state with [Formula: see text]. Furthermore, we discuss the possible assignments of the [Formula: see text], [Formula: see text] and [Formula: see text] as the diquark–antidiquark type tetraquark states with [Formula: see text].

TWIST-THREE DISTRIBUTION AMPLITUDES AND OCTET CURRENT DECAY CONSTANTS OF η AND η': A QCD SUM RULE APPROACH

2009 ◽  
Vol 18 (05n06) ◽  
pp. 1318-1323
Author(s):  
J. P. SINGH
Keyword(s):  
Sum Rules ◽  
Light Quark ◽  
Axial Vector ◽  
Vector Current ◽  
Axial Vector Current ◽  
Qcd Sum Rules ◽  
Sum Rule ◽  
Decay Constants ◽  
Current Decay ◽  
Rule Approach

We investigate twist-three distribution amplitudes (DAs) of η and η' using QCD sum rules. Zeroth moments of light quark DAs of η and η' are evaluated and compared with those found in other approaches. The decay constants of the octet axial vector current in the η and η' system are also estimated.

On the conserved axial-vector current in β-decay

1964 ◽  
Vol 31 (4) ◽  
pp. 874-878 ◽  
Author(s):  
V. S. Mathur ◽  
Ravinder Nath ◽  
R. P. Saxena
Keyword(s):  
Axial Vector ◽  
Vector Current ◽  
Axial Vector Current ◽  
Β Decay
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