RT Journal Article
T1 Correlations and the ridge in the Color Glass Condensate beyond the glasma graph approximation
A1 Altinoluk, Tolga
A1 Armesto Pérez, Néstor
A1 Wertepny, Douglas E.
K1 Heavy Ion Phenomenology
AB We consider two-gluon production in dilute-dense collisions within the Color Glass Condensate framework, applicable to both proton-nucleus and heavy-light ion collisions. We go beyond the glasma graph approximation which is valid in the dilute-dilute limit and show the correspondence between the glasma graphs and the kT-factorized approach that we use in our calculation. We then identify the classical uncorrelated, and the Hanbury-Brown-Twiss (HBT) and Bose enhancement correlated contributions, with the Bose enhancement contribution being suppressed by the number of degrees of freedom with respect to the uncorrelated piece. We show that both the HBT and the Bose enhancement pieces survive the inclusion of higher order contributions in density and that they stem from the quadrupole piece of the two-gluon inclusive cross section. Finally, we illustrate the results using a toy model that allows a simple numerical implementation.
PB Springer
SN 1029-8479
YR 2018
FD 2018
LK http://hdl.handle.net/10347/22728
UL http://hdl.handle.net/10347/22728
LA eng
NO Altinoluk, T., Armesto, N. & Wertepny, D.E. Correlations and the ridge in the Color Glass Condensate beyond the glasma graph approximation. J. High Energ. Phys. 2018, 207 (2018). https://doi.org/10.1007/JHEP05(2018)207
NO Thework of TA is supported by Grant No. 2017/26/M/ST2/01074 of the National Science Centre,Poland. The work of NA and DEW were supported by the European Research Councilgrant HotLHC ERC-2011-StG-279579, Ministerio de Ciencia e Innovaci on of Spain underproject FPA2014-58293-C2-1-P and Unidad de Excelencia Mar  a de Maetzu under projectMDM-2016-0692, Xunta de Galicia (Conseller  a de Educaci on) within the Strategic UnitAGRUP2015/11, and FEDER. This work has been performed in the framework of COSTAction CA15213 \Theory of hot matter and relativistic heavy-ion collisions" (THOR).
DS Minerva
RD 28 abr 2026