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Insight into particle production mechanisms via angular correlations of identified particles in pp collisions at √s=7 TeV

Adam, J.; Adamova, D.; Aggarwal, M.M; Aglieri Rinella, G; Agnello, M.; Agrawal, N; Christiansen, Peter LU ; Ljunggren, Martin LU ; Oskarsson, Anders LU and Richert, Tuva LU , et al. (2017) In European Physical Journal C 77(8).
Abstract
Two-particle angular correlations were measured in pp collisions at s=7 TeV for pions, kaons, protons, and lambdas, for all particle/anti-particle combinations in the pair. Data for mesons exhibit an expected peak dominated by effects associated with mini-jets and are well reproduced by general purpose Monte Carlo generators. However, for baryon–baryon and anti-baryon–anti-baryon pairs, where both particles have the same baryon number, a near-side anti-correlation structure is observed instead of a peak. This effect is interpreted in the context of baryon production mechanisms in the fragmentation process. It currently presents a challenge to Monte Carlo models and its origin remains an open question. © 2017, CERN for the benefit of the... (More)
Two-particle angular correlations were measured in pp collisions at s=7 TeV for pions, kaons, protons, and lambdas, for all particle/anti-particle combinations in the pair. Data for mesons exhibit an expected peak dominated by effects associated with mini-jets and are well reproduced by general purpose Monte Carlo generators. However, for baryon–baryon and anti-baryon–anti-baryon pairs, where both particles have the same baryon number, a near-side anti-correlation structure is observed instead of a peak. This effect is interpreted in the context of baryon production mechanisms in the fragmentation process. It currently presents a challenge to Monte Carlo models and its origin remains an open question. © 2017, CERN for the benefit of the ALICE collaboration. (Less)
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publication status
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in
European Physical Journal C
volume
77
issue
8
publisher
Springer
external identifiers
  • scopus:85028320203
ISSN
1434-6044
DOI
10.1140/epjc/s10052-017-5129-6
language
English
LU publication?
yes
id
8523d562-03e4-4a17-b9b2-dadb6995df85
date added to LUP
2017-09-07 13:49:04
date last changed
2017-09-10 05:24:00
@article{8523d562-03e4-4a17-b9b2-dadb6995df85,
  abstract     = {Two-particle angular correlations were measured in pp collisions at s=7 TeV for pions, kaons, protons, and lambdas, for all particle/anti-particle combinations in the pair. Data for mesons exhibit an expected peak dominated by effects associated with mini-jets and are well reproduced by general purpose Monte Carlo generators. However, for baryon–baryon and anti-baryon–anti-baryon pairs, where both particles have the same baryon number, a near-side anti-correlation structure is observed instead of a peak. This effect is interpreted in the context of baryon production mechanisms in the fragmentation process. It currently presents a challenge to Monte Carlo models and its origin remains an open question. © 2017, CERN for the benefit of the ALICE collaboration.},
  articleno    = {569},
  author       = {Adam, J. and Adamova, D. and Aggarwal, M.M and Aglieri Rinella, G and Agnello, M. and Agrawal, N and Christiansen, Peter and Ljunggren, Martin and Oskarsson, Anders and Richert, Tuva and Silvermyr, David and Stenlund, Evert and Vislavicius, Vytautas},
  issn         = {1434-6044},
  language     = {eng},
  number       = {8},
  publisher    = {Springer},
  series       = {European Physical Journal C},
  title        = {Insight into particle production mechanisms via angular correlations of identified particles in pp collisions at √s=7 TeV},
  url          = {http://dx.doi.org/10.1140/epjc/s10052-017-5129-6},
  volume       = {77},
  year         = {2017},
}