scholarly journals Classical gluon production amplitude for nucleus-nucleus collisions: First saturation correction in the projectile

2015 ◽  
Vol 2015 (3) ◽  
Author(s):  
Giovanni A. Chirilli ◽  
Yuri V. Kovchegov ◽  
Douglas E. Wertepny
Keyword(s):  
Production Amplitude ◽  
Gluon Production

scholarly journals BEYOND THE LOW–GRIBOV THEOREM FOR HIGH ENERGY INTERACTIONS OF SCALAR AND GAUGE PARTICLES

1996 ◽  
Vol 11 (14) ◽  
pp. 2545-2573
Author(s):  
E.N. ANTONOV
Keyword(s):  
Excited States ◽  
Scalar Particle ◽  
High Energy ◽  
Particle Collision ◽  
Production Amplitude ◽  
Direct Extension ◽  
Intermediate States ◽  
Gluon Production ◽  
High Energy Collisions ◽  
Dual Models

We obtain a generalization of the Low theorem for non-Abelian boson emission in collision of scalar and gauge vector particles and its extension to high energy collisions for small transverse momenta of produced particles. We demonstrate that in the case of particles with spin the direct extension of the Low formula to high energy is in contradiction with the correct amplitude factorization behavior. Consideration of different kinematical regions and use of methods of dual models allow us to separate contributions of intermediate excited states and standard spin corrections in the Low formulae. We show that the amplitude factorization occurs at high energy due to the contribution of the intermediate states which is additional to the gluon production amplitude for the scalar particle collision.

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 Gluon production, cooling, and entropy in nuclear collisions

1994 ◽  
Vol 50 (1) ◽  
pp. 406-409 ◽  
Author(s):  
J. Letessier ◽  
J. Rafelski ◽  
A. Tounsi
Keyword(s):  
Nuclear Collisions ◽  
Gluon Production

scholarly journals Zeros of the Vector - Meson Production Amplitude and Their Implications

1973 ◽  
Vol 30 (10) ◽  
pp. 465-468 ◽  
Author(s):  
L. J. Gutay ◽  
R. L. McIlwain ◽  
K. V. Vasavada ◽  
F. T. Meiere
Keyword(s):  
Vector Meson ◽  
Meson Production ◽  
Production Amplitude ◽  
Vector Meson Production
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