Effects of overlapping strings in pp collisions
Bierlich, Christian LU ; Gustafson, Gösta LU ; Lönnblad, Leif LU
and Tarasov, Andrey
(2015)
In Journal of High Energy Physics
- Abstract
- In models for hadron collisions based on string hadronization, the strings are usually treated as independent, allowing no interaction between the confined colour fields. In studies of nucleus collisions it has been suggested that strings close in space can fuse to form "colour ropes". Such ropes are expected to give more strange particles and baryons, which also has been suggested as a signal for plasma formation. Overlapping strings can also be expected in pp collisions, where usually no phase transition is expected. In particular at the high LHC energies the expected density of strings is quite high. To investigate possible effects of rope formation, we present a model in which strings are allowed to combine into higher multiplets,... (More)
- In models for hadron collisions based on string hadronization, the strings are usually treated as independent, allowing no interaction between the confined colour fields. In studies of nucleus collisions it has been suggested that strings close in space can fuse to form "colour ropes". Such ropes are expected to give more strange particles and baryons, which also has been suggested as a signal for plasma formation. Overlapping strings can also be expected in pp collisions, where usually no phase transition is expected. In particular at the high LHC energies the expected density of strings is quite high. To investigate possible effects of rope formation, we present a model in which strings are allowed to combine into higher multiplets, giving rise to increased production of baryons and strangeness, or recombine into singlet structures and vanish. Also a crude model for strings recombining into junction structures is considered, again giving rise to increased baryon production. The models are implemented in the dipsy MC event generator, using Pythia8 for hadronization, and comparison to pp minimum bias data, reveals improvement in the description of identified particle spectra. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/5277910
- author
- Bierlich, Christian
LU
; Gustafson, Gösta
LU
; Lönnblad, Leif
LU
and Tarasov, Andrey
- organization
- publishing date
- 2015
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- QCD Phenomenology, Monte Carlo Simulations
- in
- Journal of High Energy Physics
- issue
- 3
- article number
- 148
- publisher
- Springer
- external identifiers
-
- wos:000351751200008
- scopus:84961288122
- ISSN
- 1029-8479
- DOI
- 10.1007/JHEP03(2015)148
- project
- Soft inclusive models for proton and nuclei collisions
- language
- English
- LU publication?
- yes
- id
- c19360ea-36ff-4535-84c2-2db36ae18d59 (old id 5277910)
- date added to LUP
- 2016-04-01 10:53:15
- date last changed
- 2024-04-22 00:07:04
@article{c19360ea-36ff-4535-84c2-2db36ae18d59,
abstract = {{In models for hadron collisions based on string hadronization, the strings are usually treated as independent, allowing no interaction between the confined colour fields. In studies of nucleus collisions it has been suggested that strings close in space can fuse to form "colour ropes". Such ropes are expected to give more strange particles and baryons, which also has been suggested as a signal for plasma formation. Overlapping strings can also be expected in pp collisions, where usually no phase transition is expected. In particular at the high LHC energies the expected density of strings is quite high. To investigate possible effects of rope formation, we present a model in which strings are allowed to combine into higher multiplets, giving rise to increased production of baryons and strangeness, or recombine into singlet structures and vanish. Also a crude model for strings recombining into junction structures is considered, again giving rise to increased baryon production. The models are implemented in the dipsy MC event generator, using Pythia8 for hadronization, and comparison to pp minimum bias data, reveals improvement in the description of identified particle spectra.}},
author = {{Bierlich, Christian and Gustafson, Gösta and Lönnblad, Leif and Tarasov, Andrey}},
issn = {{1029-8479}},
keywords = {{QCD Phenomenology; Monte Carlo Simulations}},
language = {{eng}},
number = {{3}},
publisher = {{Springer}},
series = {{Journal of High Energy Physics}},
title = {{Effects of overlapping strings in pp collisions}},
url = {{http://dx.doi.org/10.1007/JHEP03(2015)148}},
doi = {{10.1007/JHEP03(2015)148}},
year = {{2015}},
}