scholarly journals Relativistic two-photon and two-gluon decay rates of heavy quarkonia

1996 ◽  
Vol 54 (3) ◽  
pp. 2075-2080 ◽  
Author(s):  
Suraj N. Gupta ◽  
James M. Johnson ◽  
Wayne W. Repko
Keyword(s):  
Decay Rates ◽  
Heavy Quarkonia ◽  
Two Photon

scholarly journals TWO-PHOTON DECAY RATES OF HEAVY QUARKONIA IN THE RELATIVISTIC QUARK MODEL

2003 ◽  
Vol 18 (09) ◽  
pp. 601-607 ◽  
Author(s):  
D. EBERT ◽  
R. N. FAUSTOV ◽  
V. O. GALKIN
Keyword(s):  
Experimental Data ◽  
Quark Model ◽  
Relativistic Effects ◽  
Decay Rates ◽  
Heavy Quarkonia ◽  
Radiative Corrections ◽  
Relativistic Quark Model ◽  
Two Photon ◽  
Photon Decay ◽  
Theoretical Predictions

Two-photon decay rates of pseudoscalar, scalar and tensor states of charmonium and bottomonium are calculated in the framework of the relativistic quark model. Both relativistic effects and one-loop radiative corrections are taken into account. The obtained results are compared with other theoretical predictions and available experimental data.

scholarly journals Hadronic annihilation decay rates ofP-wave heavy quarkonia with relativistic corrections

1997 ◽  
Vol 56 (9) ◽  
pp. 5816-5819 ◽  
Author(s):  
Han-Wen Huang ◽  
Hai-Ming Hu ◽  
Xiao-Fei Zhang
Keyword(s):  
Decay Rates ◽  
Heavy Quarkonia ◽  
Relativistic Corrections

Two-photon decay rates of hydrogenlike ions revisited by using Dirac-Coulomb Sturmian expansions of the first order

2014 ◽  
Vol 89 (2) ◽  
Author(s):  
Zachée Bona ◽  
Hugues Merlain Tetchou Nganso ◽  
Thierry Blanchard Ekogo ◽  
Moïse Godfroy Kwato Njock
Keyword(s):  
Decay Rates ◽  
First Order ◽  
Two Photon ◽  
Photon Decay

Relativistic two-photon decay rates of2s12hydrogenic ions

1981 ◽  
Vol 24 (1) ◽  
pp. 183-191 ◽  
Author(s):  
S. P. Goldman ◽  
G. W. F. Drake
Keyword(s):  
Decay Rates ◽  
Two Photon ◽  
Photon Decay

Two-photon decay rates of the π0 and η mesons

1963 ◽  
Vol 4 (1) ◽  
pp. 16-18 ◽  
Author(s):  
Barbara Barrett ◽  
G. Barton
Keyword(s):  
Decay Rates ◽  
Two Photon ◽  
Photon Decay

scholarly journals COMPOSITE HIGGS TO TWO PHOTONS AND GLUONS

2011 ◽  
Vol 26 (31) ◽  
pp. 2313-2322 ◽  
Author(s):  
TUOMAS HAPOLA ◽  
FRANCESCO SANNINO
Keyword(s):  
Standard Model ◽  
Gluon Fusion ◽  
Decay Rates ◽  
Decay Process ◽  
Two Photon ◽  
Photon Decay ◽  
Composite Higgs ◽  
The Standard Model ◽  
200 Gev ◽  
Boson Coupling

We introduce a simple framework to estimate the composite Higgs boson coupling to two-photon in technicolor extensions of the standard model. The same framework allows us to predict the composite Higgs to two-gluon process. We compare the decay rates with the standard model ones and show that the corrections are typically of order one. We suggest, therefore, that the two-photon decay process can be used to disentangle a light composite Higgs from the standard model one. We also show that the Tevatron results for the gluon–gluon fusion production of the Higgs either exclude the techniquarks to carry color charges to the 95% confidence level, if the composite Higgs is light, or that the latter must be heavier than around 200 GeV.

scholarly journals Hyperfine Splitting and Leptonic Decay Rates in Heavy Quarkonia

2003 ◽  
Vol 18 (23) ◽  
pp. 1597-1600 ◽  
Author(s):  
D. Ebert ◽  
R. N. Faustov ◽  
V. O. Galkin
Keyword(s):  
Experimental Data ◽  
Hyperfine Splitting ◽  
Belle Collaboration ◽  
Leptonic Decay ◽  
Decay Rates ◽  
Heavy Quarkonia ◽  
Radiative Corrections

The hyperfine splitting in heavy quarkonia is considered in its relation to the leptonic decay rates with the account of relativistic and radiative corrections. The calculated decay rates agree well with the available experimental data, while the predicted ηc(2S) mass is significantly smaller than the value measured recently by the Belle collaboration.

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