An event generator for interactions between hadrons and nuclei — FRITIOF version 7.0

Pi, Hong

doi:10.1016/0010-4655(92)90082-a

Cited by 172 publications

(124 citation statements)

References 10 publications

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“…This is also in agreement with models for the centrality dependence of particle production (e.g., the wounded nucleon model [17,18]), or also string models like FRITIOF [19]). The total rapidity integrated multiplicity of charged particles measured in hadron-nucleus collisions (N h-A ch ) at center-of-mass energies ranging from 10 to 200 GeV (E178 [20], PHOBOS [21]) is consistent with a linear dependence on N part : N h-A ch = N pp ch N part /2.…”

Section: Published By the American Physical Society Under The Terms Osupporting

confidence: 87%

“…This is shown in the right panel of Fig. 22, which plots the double ratio of the p-Pb to pp yields at 3 GeV/c and in [10][11][12][13][14][15][16][17][18][19][20] 3 GeV/c to the value calculated with G-PYTHIA at 3 GeV/c. The Cronin peak is clearly visible for the V0M and CL1 (with respect to G-PYTHIA) selection and is very pronounced for the V0A selection.…”

Section: B Nuclear Modification Factorsmentioning

confidence: 99%

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Centrality dependence of particle production inp−Pbcollisions atsNN=5.02TeV

Adam¹,

Adamová²,

Aggarwal³

et al. 2015

Phys. Rev. C

181

185

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We report measurements of the primary charged-particle pseudorapidity density and transverse momentum distributions in p-Pb collisions at √ s NN = 5.02 TeV and investigate their correlation with experimental observables sensitive to the centrality of the collision. Centrality classes are defined by using different event-activity estimators, i.e., charged-particle multiplicities measured in three different pseudorapidity regions as well as the energy measured at beam rapidity (zero degree). The procedures to determine the centrality, quantified by the number of participants (N part ) or the number of nucleon-nucleon binary collisions (N coll ) are described. We show that, in contrast to Pb-Pb collisions, in p-Pb collisions large multiplicity fluctuations together with the small range of participants available generate a dynamical bias in centrality classes based on particle multiplicity. We propose to use the zero-degree energy, which we expect not to introduce a dynamical bias, as an alternative event-centrality estimator. Based on zero-degree energy-centrality classes, the N part dependence of particle production is studied. Under the assumption that the multiplicity measured in the Pb-going rapidity region scales with the number of Pb participants, an approximate independence of the multiplicity per participating nucleon measured at mid-rapidity of the number of participating nucleons is observed. Furthermore, at high-p T the p-Pb spectra are found to be consistent with the pp spectra scaled by N coll for all centrality classes. Our results represent valuable input for the study of the event-activity dependence of hard probes in p-Pb collisions and, hence, help to establish baselines for the interpretation of the Pb-Pb data.

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Section: Published By the American Physical Society Under The Terms Osupporting

confidence: 87%

Section: B Nuclear Modification Factorsmentioning

confidence: 99%

Centrality dependence of particle production inp−Pbcollisions atsNN=5.02TeV

Adam¹,

Adamová²,

Aggarwal³

et al. 2015

Phys. Rev. C

181

185

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show abstract

“…For collisions with quarks (antiquarks) we adopt half of the cross section for collisions with mesons and for the leading pre-hadron (formed) baryon collision a factor of 1/3 is assumed. The elastic and inelastic interactions with their fractional cross section are modeled in the HSD approach in the same way as for ordinary hadrons with the same quantum numbers via the Fritiof model [47] (including Pythia v5.5 with Jetset v7.3 for the production and fragmentation of jets [48]). This concept -oriented along the additive quark model -has been proven to work rather well for nucleus-nucleus collisions from AGS to RHIC energies [51,52,53] as well as in hadron formation and attenuation in deep inelastic lepton scattering off nuclei [39,40].…”

Section: Perturbative Treatment Of High P ⊥ Hadrons and Jetsmentioning

confidence: 99%

Jet quenching by (pre-)hadronic final state interactions at RHIC

Gallmeister

Cassing

2005

Nuclear Physics A

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Within a hadron-string dynamical transport approach (HSD) we investigate the attenuation of high transverse momentum (p ⊥ ) hadrons as well as the suppression of 'near-side' and 'far-side' jets in Au + Au collisions at invariant energies √ s = 200 GeV and √ s = 62.4 GeV in comparison to the data available from the Relativistic Heavy-Ion Collider (RHIC). From our transport studies we find that a significant part of the high p ⊥ hadron attenuation seen experimentally can be attributed to inelastic interactions of 'leading' pre-hadrons with the dense hadronic environment. In addition, we also show results of 'near-side' and 'far-side' angular correlations of high p ⊥ particles from Au+Au collisions at √ s = 200 GeV and √ s = 62.4 GeV within this (pre-)hadronic attenuation scenario. It turns out that the 'near-side' correlations are unaltered -in accordance with experiment -whereas the 'far-side' correlations are suppressed by up to ∼ 60% in central collisions. Since a much larger suppression is observed experimentally for these reactions in central reactions we conclude that there should be strong additional (and earlier) partonic interactions in the dense and possibly colored medium created in Au+Au collisions at RHIC.

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“…Employing the formula of Bjorken [20], ǫ 0 τ 0 πR 2 T = dE T (τ 0 )/dy, with a nuclear radius of R T = 6 fm, we obtain an initial transverse energy at midrapidity of dE T /dy = 1.2 TeV. We have extracted this value for dE T /dy for central (b < 2 fm) Au+Au collisions at √ s = 200A GeV from the minijet/string fragmentation model FRITIOF 7.02 [21]. It is also compatible with the prediction of HIJING [22].…”

mentioning

confidence: 95%

Inverse slope systematics in high-energy p+p and Au+Au reactions

Dumitru

Spieles

1999

Physics Letters B

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We employ the Monte-Carlo PYTHIA to calculate the transverse mass spectra of various hadrons and their inverse slopes T * at m T −m = 1.5−2 GeV in p+p reactions at √ s = 200 GeV. Due to (multiple) minijet production T * in general increases as a function of the hadron mass. Moreover, the T * (m) systematics has a "discontinuity" at the charm threshold, i.e. the inverse slope of D-mesons is much higher than that of non-charmed hadrons and even of the heavier Λ C baryon. The experimental observation of this characteristic behaviour in Au+Au collisions would indicate the absence of c-quark rescattering. In contrast, the assumption of thermalized partons and hydrodynamical evolution would lead to a smoothly increasing T * (m), without discontinuity at the charm threshold. The degree of collective transverse flow, indicated by the slope of the T * (m) systematics, depends strongly on whether kinetic equilibrium is maintained for some time after hadronization or not. † Supported by AvH Foundation and DAAD.

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An event generator for interactions between hadrons and nuclei — FRITIOF version 7.0

Cited by 172 publications

References 10 publications

Centrality dependence of particle production inp−Pbcollisions atsNN=5.02TeV

Centrality dependence of particle production inp−Pbcollisions atsNN=5.02TeV

Jet quenching by (pre-)hadronic final state interactions at RHIC

Inverse slope systematics in high-energy p+p and Au+Au reactions

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