Does perturbative quantum chromodynamics imply a Regge singularity above unity?

1982 ◽  
Vol 26 (2) ◽  
pp. 529-531
Author(s):  
Mordechai Bishari
Keyword(s):  
Quantum Chromodynamics ◽  
Perturbative Quantum Chromodynamics ◽  
Perturbative Quantum ◽  
Regge Singularity

Strangeness-changing nonlepton decays of the kaons, hyperons, and the Ω− particle

1982 ◽  
Vol 60 (4) ◽  
pp. 405-423 ◽  
Author(s):  
H. C. Lee ◽  
K. B. Winterbon
Keyword(s):  
Quantum Chromodynamics ◽  
Short Distance ◽  
P Wave ◽  
Radiative Corrections ◽  
Wilson Coefficient ◽  
S Wave ◽  
Perturbative Quantum Chromodynamics ◽  
Hyperon Decays ◽  
Perturbative Quantum ◽  
Nonleptonic Decays

We try to understand the strangeness changing nonleptonic decays of kaons, hyperons, and the Ω− particle in terms of the modern, renormalized weak Hamiltonian expressed as a sum of four-quark Wilson operators, including the so-called penguin operators c5O5 and c6O6 arising from gluon radiative corrections. It is found that these decays, including the long-standing s-wave/p-wave puzzle in hyperon decays, can be understood if the Wilson coefficient [Formula: see text] has a sign opposite to that obtained from short-distance perturbative quantum chromodynamics calculations and has an effective value such that [Formula: see text].

Scaling violations and perturbative quantum chromodynamics

1979 ◽  
Vol 81 (2) ◽  
pp. 207-210 ◽  
Author(s):  
R. Barbieri ◽  
L. Caneschi ◽  
G. Curci ◽  
E. d'Emilio
Keyword(s):  
Quantum Chromodynamics ◽  
Perturbative Quantum Chromodynamics ◽  
Perturbative Quantum ◽  
Scaling Violations
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