scholarly journals Leptonic decay-constant ratio $f_K/f_\pi$ from clover-improved $N_f=2+1$ QCD

2016 ◽  
Author(s):  
Enno E. Scholz ◽  
Stephan Durr
Keyword(s):  
Decay Constant ◽  
Leptonic Decay ◽  
Constant Ratio

scholarly journals Leptonic decay-constant ratio fK/fπ from lattice QCD using 2+1 clover-improved fermion flavors with 2-HEX smearing

2017 ◽  
Vol 95 (5) ◽  
Author(s):  
Stephan Dürr ◽  
Zoltán Fodor ◽  
Christian Hoelbling ◽  
Stefan Krieg ◽  
Laurent Lellouch ◽  
...  
Keyword(s):  
Lattice Qcd ◽  
Decay Constant ◽  
Leptonic Decay ◽  
Constant Ratio

scholarly journals CALCULATION OF THE Bc LEPTONIC DECAY CONSTANT USING THE SHIFTED N-EXPANSION METHOD

2006 ◽  
Vol 21 (32) ◽  
pp. 6699-6714 ◽  
Author(s):  
SAMEER M. IKHDAIR ◽  
RAMAZAN SEVER
Keyword(s):  
Short Distance ◽  
Decay Constant ◽  
Expansion Method ◽  
Leptonic Decay ◽  
Scaling Relation ◽  
Potential Models ◽  
The One ◽  
Distance Coefficient

We give a review and present a comprehensive calculation for the leptonic constant fBc of the low-lying pseudoscalar and vector states of Bc-meson in the framework of static and QCD-motivated nonrelativistic potential models taking into account the one-loop and two-loop QCD corrections in the short distance coefficient that governs the leptonic constant of Bc quarkonium system. Further, we use the scaling relation to predict the leptonic constant of the nS-states of the [Formula: see text] system. Our results are compared with other models to gauge the reliability of the predictions and point out differences.

scholarly journals Leptonic-Decay-Constant RatiofK+/fπ+from Lattice QCD with Physical Light Quarks

2013 ◽  
Vol 110 (17) ◽  
Author(s):  
A. Bazavov ◽  
C. Bernard ◽  
C. DeTar ◽  
J. Foley ◽  
W. Freeman ◽  
...  
Keyword(s):  
Lattice Qcd ◽  
Decay Constant ◽  
Leptonic Decay

scholarly journals Bmeson leptonic decay constant with quenched lattice NRQCD

2000 ◽  
Vol 61 (7) ◽  
Author(s):  
K-I. Ishikawa ◽  
N. Yamada ◽  
S. Aoki ◽  
M. Fukugita ◽  
S. Hashimoto ◽  
...  
Keyword(s):  
Decay Constant ◽  
Leptonic Decay

QCD determination of the leptonic decay constant of the Bc-meson

1993 ◽  
Vol 298 (1-2) ◽  
pp. 190-194 ◽  
Author(s):  
C.A. Dominguez ◽  
K. Schilcher ◽  
Y.L. Wu
Keyword(s):  
Decay Constant ◽  
Leptonic Decay ◽  
Bc Meson

The Mass and Leptonic Decay Constant of D[sub s0](2317) Meson in the Framework of Thermal QCD Sum Rules

2010 ◽  
Author(s):  
Elşen Veli Veliev ◽  
Gülşah Kaya ◽  
Volker Crede ◽  
Paul Eugenio ◽  
A. Ostrovidov
Keyword(s):  
Decay Constant ◽  
Sum Rules ◽  
Leptonic Decay ◽  
Qcd Sum Rules

Effects of Repeated VI Reinforcement and Extinction upon Operant Behavior

1964 ◽  
Vol 15 (3) ◽  
pp. 943-955 ◽  
Author(s):  
Fogle C. Clark
Keyword(s):  
Exponential Decay ◽  
Operant Behavior ◽  
Decay Constant ◽  
Initial Rate ◽  
Average Rate ◽  
Constant Ratio ◽  
Independent Variables ◽  
Decay Assumption ◽  
Operant Extinction

Four pigeons trained on a 1-min. VI schedule were reinforced, extinguished, and reconditioned under each of two stimulus conditions for 20 daily sessions. The average rate in extinction decreased significantly as a function of the number of extinctions. A concurrent increase in rate occurred during VI reinforcement periods. Extinction occurred more rapidly as it was repeated. Assuming an exponential decay in rate of responding during extinction, the effects of repetition upon the parameters of fitted curves was examined. The decay constant (ratio of deceleration to rate) increased linearly as a function of the number of extinctions, while the log initial rate decreased linearly. These changes in extinction parameters were in the same direction as previously obtained in an experiment involving another species and procedure, but which did not permit determination of the form of relations between extinction parameters and the number of extinctions. The empirical grounds for the exponential decay assumption are discussed in connection with the effects of the principal independent variables influencing the course of operant extinction.

The constant-ratio rule and visual displays.

1961 ◽  
Author(s):  
Milton H. Hodge ◽  
Morris J. Crawford ◽  
Mary L. Piercy
Keyword(s):  
Constant Ratio ◽  
Visual Displays ◽  
Ratio Rule
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