Hyperfine splitting effects in string hadronization

Bierlich, Christian; Chakraborty, Smita; Gustafson, Gösta; Lönnblad, Leif

doi:10.1140/epjc/s10052-022-10172-9

Cited by 18 publications

(23 citation statements)

References 53 publications

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“…This has a somewhat more complicated κ dependence and also have uncertainties related to the so-called popcorn model as described in [24]. We decompose it as three different parameters, ξ = αβγ with different κ-dependence, where β is related to the probability to have a qq fluctuation in general in the popcorn model which is independent of κ and is treated as an independent parameter, while γ is related to the masses and scales as γ → γ = γ 1/h , (23) and α is related to the different di-quark states with an indirect dependence on ρ, x, and y…”

Section: Discussionmentioning

confidence: 99%

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Jet modifications from colour rope formation in dense systems of non-parallel strings

Bierlich,

Chakraborty,

Gustafson

et al. 2022

Preprint

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We revisit our rope model for string fragmentation that has been shown to give a reasonable description of strangeness and baryon enhancement in high-multiplicity pp events at the LHC. A key feature of the model is that the enhancement is driven by the increased string tension due to strings overlapping in dense systems. By introducing an improved spacetime picture for the overlap between fragmenting strings, where also non-parallel strings are properly taken into account, we are now able to investigate the enhancement both in jets and in the underlying event in a consistent way.

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Section: Discussionmentioning

confidence: 99%

“…A thorough, but slightly dated, review is given in ref. [20], and a number of recent papers on Lund strings presents the model in a more modern context [15,[21][22][23], including our original paper on rope hadronization [24].…”

Section: String Hadronization and Colour Fluxtubesmentioning

confidence: 99%

Jet modifications from colour rope formation in dense systems of non-parallel strings

Bierlich,

Chakraborty,

Gustafson

et al. 2022

Preprint

Self Cite

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“…In recent years, in a series of papers, G. Gustafson, L. Lonnbland and collaborators have proposed to assume the color quark -antiquark dipoles as the diffractive eigenstates [32], with the energy evolution and interaction between these dipoles being described in terms of the Mueller's dipole model [50]. Such promising approach is currently being updated and improved [51]. Here we will consider an alternative description of the diffractive eigenstates and for the interaction between the different configurations of the hadronic structure.…”

Section: B a Model For The Eigenstates And Scattering Amplitudementioning

confidence: 99%

Model of diffractive excitation in pp collisions at high energies

2020

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A phenomenological model for the description of the single and double diffractive excitation in pp collisions at high energies is presented. Considering the Good -Walker approach, we propose a model for the eigenstates of the scattering operator and for the treatment of the interaction between them, with the high energy behavior of the cross section driven by perturbative QCD. The behavior of the total, elastic, single and double diffractive cross sections are analyzed and predictions for the energies of Run 3 of the LHC and those of the Cosmic Rays experiments are derived. We demonstrate that the model describes the current data for the energy dependence of the cross sections. A comparison with the recent data for the ρ parameter and the differential elastic cross section are also presented and shortcomings of the current model are discussed.

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“…Recently another model called string shoving model was proposed to describe the longrange correlation in high multiplicity pp collisions [7]. This model introduces a repulsive force between flux tubes so that the flux tube expands both longitudinally and transversely.…”

Section: Introductionmentioning

confidence: 99%

Exploring the string shoving model in PYTHIA8 for collective behaviors in $pp$ collisions

Kim,

et al. 2021

Preprint

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Two-particle correlations have been used to study property of a produced medium called Quark-Gluon Plasma (QGP) in relativistic heavy-ion collisions, and a long-range correlation among produced particles has been considered as a strong evidence of strongly interacting QGP. Strikingly, clear long-range correlations have been also observed in small collision systems like pp and p+A at a wide range of collision energies. A model introducing a repulsive force between flux tubes called string shoving can qualitatively describe the long-range near-side correlations in high multiplicity pp collisions. This model implemented in the Pythia8 Monte Carlo event generator allows us to perform detailed study. In this work, a full data analysis to calculate associated yields and flow coefficients is performed with Pythia8 events, and the results are compared with experimental results. We find that the string shoving model overestimates long-range near-side correlations particularly in low multiplicity events. We also introduce a method to subtract such overestimated correlations in low multiplicity to have a more relevant comparison with the data.

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Hyperfine splitting effects in string hadronization

Cited by 18 publications

References 53 publications

Jet modifications from colour rope formation in dense systems of non-parallel strings

Jet modifications from colour rope formation in dense systems of non-parallel strings

Model of diffractive excitation in pp collisions at high energies

Exploring the string shoving model in PYTHIA8 for collective behaviors in $pp$ collisions

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