Soft Multihadron Dynamics

Kittel, W.; Wolf, E. A. De

doi:10.1142/5805

Cited by 171 publications

(245 citation statements)

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“…This confirms previous observations at LEP [19] and in the other LHC experiments [26,[28][29][30]. There are no theoretical predictions for the BEC effect in pp interactions, however the observed trends are qualitatively predicted within some theoretical models [41,[66][67][68].…”

Section: Resultssupporting

confidence: 90%

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Bose-Einstein correlations of same-sign charged pions in the forward region in pp collisions at s = 7 $$ \sqrt{s}=7 $$ TeV

Aaij¹,

Adeva²,

Adinolfi³

et al. 2017

J. High Energ. Phys.

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Bose-Einstein correlations of same-sign charged pions, produced in protonproton collisions at a 7 TeV centre-of-mass energy, are studied using a data sample collected by the LHCb experiment. The signature for Bose-Einstein correlations is observed in the form of an enhancement of pairs of like-sign charged pions with small four-momentum difference squared. The charged-particle multiplicity dependence of the Bose-Einstein correlation parameters describing the correlation strength and the size of the emitting source is investigated, determining both the correlation radius and the chaoticity parameter. The measured correlation radius is found to increase as a function of increasing charged-particle multiplicity, while the chaoticity parameter is seen to decrease.

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Section: Resultssupporting

confidence: 90%

“…related to the transverse momentum conservation. This extended parameterisation follows better the Q distribution in data, including in the low-Q region below ∼0.5 GeV/c 2 [41]. The correlation function is, to first order, independent of the single-particle acceptance and efficiency.…”

Section: Two-particle Correlation Functionsupporting

confidence: 61%

Bose-Einstein correlations of same-sign charged pions in the forward region in pp collisions at s = 7 $$ \sqrt{s}=7 $$ TeV

Aaij¹,

Adeva²,

Adinolfi³

et al. 2017

J. High Energ. Phys.

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“…It means that they are independent of a projectile state for the same type of colliding objects, i.e. being considered as a function of η = η − y beam , where y beam = ln( √ s NN /m p ) is the beam rapidity [14,20]. This observation obeys a hypothesis of the limiting fragmentation scaling [21].…”

mentioning

confidence: 80%

Universality of particle production and energy balance in hadronic and nuclear collisions

Mishra

Sarkisyan

Sahoo

et al. 2016

EPJ Web of Conferences

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Abstract. The multihadron production in nucleus-nucleus and (anti)proton-proton collisions is studied by exploring the collision-energy and centrality dependencies of the mean multiplicity in the existing data. The study is performed in the framework of the recently proposed effective-energy approach which combines the constituent quark picture and Landau hydrodynamics counting for the centrality-defined effective energy of participants. Within this approach, the multiplicity energy dependence and the pseudorapidity spectra from the most central nuclear collisions are well reproduced. The study of the multiplicity centrality dependence reveals a new scaling between the measured pseudorapidity spectra and the calculations. Using this scaling, called the energy balanced limiting fragmentation scaling, the pseudorapidity spectra are well reproduced for all centralities. The scaling clarifies some differences in the multiplicity and midrapidity density centrality dependence from RHIC and LHC. A similarity in the multiplicity energy dependence in the most central collisions and centrality data is shown. Predictions are drawn for the mean multiplicities to be measured in hadronic and heavy-ion collisions at the LHC.1. In this report, we discuss our recent results on the universality of multiparticle production in nucleus-nucleus (AA) and hadronic interactions in view of a new scaling obtained [1]. The study exploites concept of effective energy [2] employed for the data interpreted in terms of the approach of the dissipating energy of quark participants [3,4], or, for brevity, the participant dissipating energy (PDE) approach. This approach combines the constituent quark picture together with Landau relativistic hydrodynamics and interrelates different types of collisions. The earlier observations [2] are made by studying the dependencies of the pseudorapidity density and transverse energy pseudorapidity density at midrapidity on the collision center-of-mass (c.m.) energy in hadronic and the most central (head-on) AA collisions and on the number of nucleon participants, or centrality, in AA collisions in the entire available energy range of the existing data. The complementarity of the measurements in a

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“…These data 2 The ATLAS reference system is a Cartesian right-handed co-ordinate system, with the nominal collision point at the origin. The anti-clockwise beam direction defines the positive z-axis, while the positive x-axis is defined as pointing from the collision point to the centre of the LHC ring and the positive y-axis points upwards.…”

Section: Data Selectionmentioning

confidence: 99%

“…The soft, or non-perturbative, QCD processes of multiparticle production include diffractive (single-and doublediffractive) and non-diffractive components forming the inelastic scattering. All these ingredients are not well modeled by perturbative QCD or Monte Carlo (MC) models when applied to low transverse momentum, or soft, particle production [2]. The MC models need to be (re)tuned to the data.…”

Section: Introductionmentioning

confidence: 99%

Soft QCD in ATLAS: Minimum bias and diffraction studies

Sarkisyan-Grinbaum

2011

Phys. Part. Nuclei Lett.

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We present measurements of charged particle production in proton-proton collisions at centre-of-mass energies of √ s = 0.9, 2.36 and 7 TeV recorded with the ATLAS detector at the Large Hadron Collider. Events were collected using a single-arm minimum bias trigger, charged tracks are measured with high precision in the inner tracking system. Minimum bias analysis uses data samples at all three energies, while diffractive events are studied using a sample of events at √ s = 7 TeV. To study diffractive interactions, the events that have hits on exactly one side of the ATLAS detector were selected. The charged particle multiplicity, pseudorapidity and transverse momentum spectra are analyzed and compared to the predictions by various Monte Carlo models.

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Soft Multihadron Dynamics

Cited by 171 publications

References 0 publications

Bose-Einstein correlations of same-sign charged pions in the forward region in pp collisions at s = 7 $$ \sqrt{s}=7 $$ TeV

Bose-Einstein correlations of same-sign charged pions in the forward region in pp collisions at s = 7 $$ \sqrt{s}=7 $$ TeV

Universality of particle production and energy balance in hadronic and nuclear collisions

Soft QCD in ATLAS: Minimum bias and diffraction studies

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