Baryon stopping in the color glass condensate formalism: A phenomenological study

Abstract

The net-baryon production at forward rapidities is investigated considering the Color Glass Condensate formalism. We assume that at large energies the coherence of the projectile quarks is lost and that the leading baryon production mechanism changes from recombination to independent fragmentation. The phenomenological implications for net-baryon production in pp/pA/AA collisions are analysed and predictions for LHC energies are presented.

On Productions of Net-Baryons in Central Au-Au Collisions at RHIC Energies

“…In fact, there is no symmetry due to the density distributions of scatter points in the two directions being totally different. Two small high density areas appear in the regions of large | | Although Lambda decays affect the rapidity distribution somewhere, we have analyzed the net-baryons but not the net-protons measured by the BRAHMS Collaboration [17][18][19] due to more abundant data of net-baryons being collected in [20]. It is more convenient for us to use [20] instead of [17][18][19].…”

“…Two small high density areas appear in the regions of large | | Although Lambda decays affect the rapidity distribution somewhere, we have analyzed the net-baryons but not the net-protons measured by the BRAHMS Collaboration [17][18][19] due to more abundant data of net-baryons being collected in [20]. It is more convenient for us to use [20] instead of [17][18][19]. In addition, the typical motivation to study net-baryons is that one expects it to be transported in the initial collisions and there one uses that it is conserved to locate it in the final state.…”

“…, the corresponding rapidities are y  0, 0.9, 1.9, and 2.9, respectively. The symbols represent the experimental data of the BRAHMS Collaboration [17][18][19] measured at the RHIC and collected together in [20] in which the longitudinal axis shouldn't be 2…”

“…Figure 2 presents the rapidity distributions of net-baryons produced in central Au-Au collisions at (a) 62.4 and (b) 200 GeV. The solid symbols represent the experimental data of the BRAHMS Collaboration [17][18][19] and collected together in [20], and the open symbols are reflected from the data around midrapidity, where ref. [19] is a conference proceeding which means that most points in Figure 2 , and the contribution ratio k of LP are shown in Table 2 with the normalization constant 0 N and 2 ndf  .…”

Forward hadron productions in high energyppcollisions from a Monte-Carlo generator for color glass condensate

“…The DHJ formula was also utilized to compute baryon productions for Au+Au collisions in Ref. [23,24], and it is found that transverse momentum spectra and net-baryon rapidity distributions in Au+Au collisions at RHIC are well described with the DHJ formula.…”