https://doi.org/10.1140/epjc/s10052-019-6923-0
Regular Article - Theoretical Physics
Thermal radiation and inclusive production in the CGC/saturation approach at high energies
1
Department of Particle Physics, Raymond and Beverly Sackler Faculty of Exact Science, School of Physics and Astronomy, Tel Aviv University, Tel Aviv, 69978, Israel
2
Departemento de Física, Universidad Técnica Federico Santa María, and Centro Científico-Tecnológico de Valparaíso, Avda. Espana 1680, Casilla 110-V, Valparaíso, Chile
* e-mail: gotsman@post.tau.ac.il
Received:
28
February
2019
Accepted:
5
May
2019
Published online:
17
May
2019
In this paper, we discuss the inclusive production of hadrons in the framework of the CGC/saturation approach. We argue, that gluon jet inclusive production stems from the vicinity of the saturation momentum, even for small values of the transverse momenta 
. Since in this region, we theoretically, know the scattering amplitude, we claim that we can provide reliable estimates for this process. We demonstrate, that in a widely accepted model for confinement, we require a thermal radiation term to describe the experimental data. In this model the parton (quark or gluon) with the transverse momenta of the order of 
decays into hadrons with the given fragmentation functions, and the production of the hadron with small transverse momenta is suppressed by the mass of the gluon jet. In addition we show that other approaches for confinement, also describe the data, without the need for thermal emission.
© The Author(s), 2019
