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 of minimum-bias events collected with proton-proton collisions at a center-of-mass energy in the early low-luminosity data taking with the ATLAS detector at the LHC.
7 More- Received 22 September 2017
DOI:https://doi.org/10.1103/PhysRevD.96.092008
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.
© 2017 CERN, for the ATLAS Collaboration