Color reconnection: a fundamental ingredient of the hadronisation in p-p collisions

39th Symposium on Nuclear Physics 2016

Cuautle, E.^1 ; Iga, S.^1 ; Ortiz, A.^1 ; Pai, G.^1

Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, A.P. 70 543, Ciudad de México

04510, Mexico^1

关键词: Center-of-mass energies;    Event generators;    Hydrodynamic flows;    Transverse momenta;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/730/1/012009/pdf
DOI  :  10.1088/1742-6596/730/1/012009

来源: IOP

【 摘 要 】

At the LHC very interesting similarities among different colliding systems (p-p, p-Pb and Pb-Pb) where observed in the multiplicity evolution of the transverse momentum spectra. This has prompted a number of analyses that have explained the results in terms of collective hydrodynamic flow. The explanation in terms of hydrodynamics has recognized problems with the smallness of the interaction volume in the systems created in p-p and p- Pb collisions. On the other hand, some event generators based on QCD produce a reasonable qualitative, and sometimes quantitative, agreement with the data. Those results can be achieved introducing in the hadronisation model the so-called color reconnection which produces flowlike patterns via boosted strings. In this work we present the behavior of the various color reconnection (CR) schemes compared to those without the CR case for different center-of-mass energies at the LHC (0.9, 7 and 13 TeV).