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Study of ordered hadron chains with the ATLAS detector

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  • ATLAS Collaboration
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Article number092008
<mark>Journal publication date</mark>29/11/2017
<mark>Journal</mark>Physical Review D
Issue number9
Volume96
Number of pages31
<mark>State</mark>Published
<mark>Original language</mark>English

Abstract

The analysis of the momentum difference between charged hadrons in high-energy proton-proton collisions is performed in order to study coherent particle production. The observed correlation pattern agrees with a model of a helical QCD string fragmenting into a chain of ground-state hadrons. A threshold momentum difference in the production of adjacent pairs of charged hadrons is observed, in agreement with model predictions. The presence of low-mass hadron chains also explains the emergence of charge-combination-dependent two-particle correlations commonly attributed to Bose-Einstein interference. The data sample consists of 190  μb−1 of minimum-bias events collected with proton-proton collisions at a center-of-mass energy √s=7  TeV in the early low-luminosity data taking with the ATLAS detector at the LHC.

Bibliographic note

© 2017 CERN, for the ATLAS Collaboration Funded by SCOAP3