scholarly journals THE TWO TYPES OF CHERENKOV GLUONS AT LHC ENERGIES

2007 ◽  
Vol 16 (10) ◽  
pp. 3108-3114 ◽  
Author(s):  
I. M. DREMIN
Keyword(s):  
Energy Region ◽  
Scattering Amplitude ◽  
Cosmic Ray ◽  
High Energy ◽  
Positive Real Part ◽  
Forward Scattering ◽  
Low Energy ◽  
High Energy Region ◽  
Forward Scattering Amplitude ◽  
Positive Real

Beside comparatively low energy Cherenkov gluons observed at RHIC, there could be high energy gluons at LHC, related to the high energy region of positive real part of the forward scattering amplitude. In both cases they give rise to particles emitted along some cone. The characteristics of the cones produced by these two types of gluons are different. Therefore different experiments are needed to detect them. The cosmic ray event which initiated this idea is described in detail.

scholarly journals CHERENKOV GLUONS (PREDICTIONS AND PROPOSALS)

2007 ◽  
Vol 22 (18) ◽  
pp. 3087-3104 ◽  
Author(s):  
I. M. DREMIN
Keyword(s):  
Mass Spectra ◽  
Scattering Amplitude ◽  
Free Path Length ◽  
High Energy ◽  
Parton Density ◽  
Positive Real Part ◽  
High Energy Region ◽  
Positive Real ◽  
Ring Diameter ◽  
Different Characteristics

The coherent hadron production analogous to Cherenkov radiation of photons gives rise to the ring-like events. Being projected on the ring diameter they produce the two-bump structure recently observed for the away-side jets at RHIC. The position of the peaks and their height determine such properties of the hadronic medium as its nuclear refractive index, the parton density, the free path length and the energy loss of Cherenkov gluons. Cherenkov gluons may be responsible for the asymmetry of dilepton mass spectra near ρ-meson observed in experiment. Beside comparatively low energy gluons observed at RHIC, there could be high energy gluons at LHC, related to the high energy region of positive real part of the forward scattering amplitude and possessing different characteristics. This would allow to scan (x, Q2)-plane determining the parton densities in its various regions.

Uniformization of the forward-scattering amplitude at high energy

1976 ◽  
Vol 15 (9) ◽  
pp. 321-328 ◽  
Author(s):  
V. P. Gerdt ◽  
V. I. Inozemtsev ◽  
V. A. Meshcheryakov
Keyword(s):  
Scattering Amplitude ◽  
High Energy ◽  
Forward Scattering ◽  
Forward Scattering Amplitude

scholarly journals A DYNAMICAL SOLUTION OF STABLE STAROBINSKY-TYPE INFLATIONARY MODEL IN QUANTUM GEOMETRY

2001 ◽  
Vol 16 (12) ◽  
pp. 803-808 ◽  
Author(s):  
KEN-JI HAMADA
Keyword(s):  
Energy Region ◽  
High Energy ◽  
Equation Of Motion ◽  
Low Energy ◽  
The Self ◽  
Asymptotic Freedom ◽  
Quantum Geometry ◽  
De Sitter ◽  
High Energy Region ◽  
Regularization Scheme

Quantum geometry gives a regularization scheme-independent effective action, whose equation of motion for the conformal mode has a stable de Sitter solution at the high-energy region where the coupling of the self-interactions of the traceless mode can be neglected because of the asymptotic freedom. However, the dynamics of the traceless mode suggests that inflation ends at the low-energy region. The notable point is that this inflationary senario is determined only by the dynamics of quantum geometry without an artificial tuning in the previous work.

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