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Title: Signature of the Fragmentation of a Color Flux Tube

The production of quark-antiquark pairs along a color flux tube precedes the fragmentation of the tube. Because of the local conservation of momentum and charge, the production of a $q$-$$\bar q$$ pair will lead to correlations of adjacently produced mesons (mostly pions). Adjacently produced pions however can be signalled by the their rapidity difference $$\Delta y$$ falling within the window of $$|\Delta y | < 1/(dN_\pi/dy)$$, on account of the space-time-rapidity ordering of produced pions in a flux tube fragmentation. Therefore, the local conservation of momentum will lead to a suppression of azimuthal two-pion correlation $$dN/(d\Delta \phi\, d\Delta y)$$ on the near side at $$(\Delta \phi, \Delta y) \sim 0$$, but an enhanced azimuthal correlation on the back-to-back, away side at $$(\Delta \phi$$$$\sim$$$$ \pi,\Delta y$$$$\sim$$0). Similarly, in a flux tube fragmentation, the local conservation of charge will forbid the production of like charge pions within $$|\Delta y | < 1/(dN_\pi/dy)$$, but there is no such prohibition for $$|\Delta y| >1/(dN_\pi/dy)$$. These properties may be used as the signature for the fragmentation of a color flux tube.
Authors:
 [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
OSTI Identifier:
1223076
Grant/Contract Number:
AC05-00OR22725
Type:
Accepted Manuscript
Journal Name:
Physical Review. D, Particles, Fields, Gravitation and Cosmology
Additional Journal Information:
Journal Volume: 92; Journal Issue: 7; Journal ID: ISSN 1550-7998
Publisher:
American Physical Society (APS)
Research Org:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org:
USDOE Office of Science (SC)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS