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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Resonance suppression from color reconnection

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Author(s):
Acconcia, R. [1] ; Chinellato, D. D. [1] ; Derradi de Souza, R. [1] ; Takahashi, J. [1] ; Torrieri, G. [1] ; Markert, C. [2]
Total Authors: 6
Affiliation:
[1] Univ Estadual Campinas, BR-13083859 Campinas, SP - Brazil
[2] Univ Texas Austin, Austin, TX 78712 - USA
Total Affiliations: 2
Document type: Journal article
Source: Physical Review D; v. 97, n. 3 FEB 12 2018.
Web of Science Citations: 1
Abstract

We present studies that show how multi-parton interaction and color reconnection affect the hadro-chemistry in proton-proton (pp) collisions with special focus on the production of resonances using the PYTHIA8 event generator. We find that color reconnection suppresses the relative production of meson resonances such as rho(0) and K{*}, providing an alternative explanation for the K{*}/K decrease observed in proton-proton collisions as a function of multiplicity by the ALICE collaboration. Detailed studies of the underlying mechanism causing meson resonance suppression indicate that color reconnection leads to shorter, less energetic strings whose fragmentation is less likely to produce more massive hadrons for a given quark content, therefore reducing ratios such as K{*}/K and rho(0)/pi in high-multiplicity pp collisions. In addition, we have also studied the effects of allowing string junctions to form and found that these may also contribute to resonance suppression. (AU)

FAPESP's process: 14/09167-8 - Phenomenology of relativistic hydrodynamics for application in studies of heavy ion collisions in the LHC
Grantee:Rafael Derradi de Souza
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 17/05685-2 - Hadronic physics in high energy nuclear collisions
Grantee:Jun Takahashi
Support type: Research Projects - Thematic Grants
FAPESP's process: 16/13803-2 - Strangeness production in Pb-Pb collisions at 5.02TeV in ALICE
Grantee:David Dobrigkeit Chinellato
Support type: Regular Research Grants