Recent Results on Charmonium Production at HERA-B

2009 ◽  
Author(s):  
Roberto Spighi
Keyword(s):  
Charmonium Production

scholarly journals NRQCD analysis of charmonium production with pion and proton beams at fixed-target energies

2021 ◽  
Author(s):  
Chia-Yu Hsieh ◽  
Yu-Shiang Lian ◽  
Wen-Chen Chang ◽  
Jen-Chieh Peng ◽  
Stephane Platchkov ◽  
...  
Keyword(s):  
Fixed Target ◽  
Charmonium Production ◽  
Proton Beams

scholarly journals Investigating charmonium production at the LHC with thepp¯final state

2012 ◽  
Vol 86 (3) ◽  
Author(s):  
Sergey Barsuk ◽  
Jibo He ◽  
Emi Kou ◽  
Benoit Viaud
Keyword(s):  
Final State ◽  
Charmonium Production

scholarly journals CHARMONIUM PRODUCTION AT THE LHC

1996 ◽  
Vol 11 (19) ◽  
pp. 1555-1562 ◽  
Author(s):  
K. SRIDHAR
Keyword(s):  
Cross Section ◽  
Event Rate ◽  
Charm Quark ◽  
Large Transverse Momentum ◽  
Fragmentation Mechanism ◽  
Charmonium Production ◽  
Quark Fragmentation ◽  
Gluon Production ◽  
Gluon Fragmentation ◽  
Important Test

The analyses of large transverse momentum charmonium production at the Tevatron have shown that fragmentation of gluons is an important production mechanism. We study large-pT charmonium production in pp collisions at the LHC, and find that due to the copious gluon production at this energy, the gluon fragmentation contribution completely overwhelms the fusion contribution and the charm quark fragmentation contribution. Our analysis shows that for J/ψ production at the LHC, there is a significant event rate even for pT ~ 100 GeV. The measurement of the cross-section at such large values of pT will provide a very important test of the fragmentation mechanism.

scholarly journals Double charmonia production in exclusive Z-boson decays

2018 ◽  
Vol 33 (14) ◽  
pp. 1850078 ◽  
Author(s):  
A. K. Likhoded ◽  
A. V. Luchinsky
Keyword(s):  
Quantum Chromodynamics ◽  
Z Boson ◽  
Light Cone ◽  
Relativistic Quantum ◽  
Branching Fractions ◽  
Systematic Analysis ◽  
Charmonium Production ◽  
Theoretical Predictions ◽  
Z Boson Decays

This paper is devoted to systematic analysis of double charmonium production in exclusive Z-boson decays in the framework of non-relativistic quantum chromodynamics (NRQCD) and leading twist light-cone (LC) models. Theoretical predictions for branching fractions of all considered decays are presented. According to the obtained results in the case of the allowed helicity suppression rule processes, the effect of internal quark motion increases the branching fractions by a factor 1.5, while for forbidden reactions the LC predictions are strictly zero, while NRQCD ones are significantly smaller than for allowed.

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