In the realm of quantum chromodynamics (QCD), the
understanding of parton recombination phenomena plays a pivotal role in
elucidating the behavior of strongly interacting systems and in the prediction
of various standard model processes at accelerators such as LHC and RHIC. This
chapter delves into the intricate interplay between parton recombination, and
the phenomenology derived from the Gribov-Levin-Ryskin (GLR) based nonlinear
evolution equations.
Beginning with a comprehensive overview of parton
distribution functions (PDFs), we discuss the linear evolution equation known
as Dokshitzer-Gribov-Lipatov-Altarelli-Parisi (DGLAP) which is used to study
the evolution of parton distributions.
This establishes the theoretical groundwork necessary for delving into
the structure of hadrons. Then, we discuss the recombination phenomenon, by
incorporating which modifies the DGLAP equation into a nonlinear evolution
equation known as the GLR equation. Drawing upon the GLR-based nonlinear
evolution equations, we elucidate their significance in modeling the non-linear
saturation effects using the solutions obtained from these GLR-based evolution
equations at the regime of high parton densities.
Furthermore, we discuss the phenomenological applications of
parton recombination effects on the evolution of parton distribution functions
(PDFs) within the context of heavy-ion collisions and deep inelastic scattering
experiments. By analyzing experimental data and theoretical predictions, we
assess the validity of GLR-based approaches in capturing the intricate dynamics
of Parton evolution in various energy regimes.
Conclusively, this chapter offers a comprehensive synthesis
of parton recombination phenomena, emphasizing their significance within the
framework of GLR-based nonlinear evolution equations.
Author(s)details:-
Dr.
Madhurjya Lalung
Department of Physics, Nowgong College, Nagaon, Assam, India.
Please See
the book here :- https://doi.org/10.9734/bpi/crpps/v1/12596F
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