Critical Phenomena in DIS

Abstract

Saturation in deep inelastic scattering (DIS) and deeply virtual Compton scattering (DVCS) is associated with a phase transition between the partonic gas, typical of moderate $x$ and $Q^2$, and partonic fluid appearing at increasing $Q^2$ and decreasing Bjorken $x$. In the statistical interpretation of DIS, the large-$x,(1-x{)}^n$ factor in the SF is associated with a statistical distribution (perfect gas), while the low-$x$, Regge behaved factor $x^{b(Q^2)}$ produces deviations from the perfect gas and ultimately leads to a gas-liquid phase transition. In this paper we do not intend to propose another parametrization of the structure function; instead we suggest a new insight into the internal structure of the nucleon, as seen in DIS, and its connection with that revealed in high-energy nucleons and heavy-ion collisions.

20 pages, 8 figures, reported at the CPOD Conference, Dubna, 2010, to be published in the International Journal of Modern Physics A

References in corpus (9)

• Operator expansion for high-energy scattering
• Small-x F_2 Structure Function of a Nucleus Including Multiple Pomeron Exchanges
• Geometric scaling for the total gamma^* p cross section in the low x region
• PHENOMENOLOGICAL APPROACH TO UNPOLARIZED AND POLARIZED PARTON DISTRIBUTIONS AND EXPERIMENTAL TESTS
• Statistical Model for the Nucleon Structure Functions
• Fermi-Dirac Distributions for Quark Partons
• The Pomeron in Elastic and Deep Inelastic Scattering
• Experimental Evidence for Simple Relations between Unpolarized and Polarized Parton Distributions
• QCD at small x and nucleus-nucleus collisions

Cited by in corpus (3)

• Collective effects in multiparticle production processes at the LHC
• Reflective scattering at the LHC and two--scale structure of a proton
• Collective Phenomena in $pp$ and $ep$ Scattering