Results from E735 at the tevatron proton-antiproton collider with √s = 1.8 TeV

Lindsey, Clark S.

doi:10.1016/0375-9474(92)90585-8

Cited by 21 publications

(17 citation statements)

References 19 publications

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“…The values obtained from Eq. (2) for the AA mean multiplicity are based on: nonsingle diffractivepp collisions at FNAL by the E735 experiment [7,24], at CERN by the UA5 experiment at √ spp = 546 GeV [25] and √ spp = 200 and 900 GeV [26]; pp collisions from CERN-ISR [27], and from the inelastic data from the bubble chamber experiments [28][29][30], the latter having been compiled and analyzed in [31]. The LHC multiplicities in pp interactions are calculated using the hybrid fit obtained here, Eq.…”

Section: The Participant Dissipating Energy Approachmentioning

confidence: 99%

“…energy dependence of the charged particle mean multiplicity in pp/pp collisions. The measurements are taken from: nonsingle diffractivepp collisions at FNAL by the E735 experiment[7,24], at CERN by the UA5 experiment at √ spp = 546 GeV[25] and √ spp = 200 and 900 GeV[26]; pp collisions from CERN-ISR[27], and from the inelastic data from the bubble chamber experiments[28][29][30][31]44].The solid line shows the hybrid fit, 1.60−0.03 ln(spp)+0.18 ln 2 (spp)+0.03 s 0.29 pp , the dotted line shows the power-law fit, −7.36+6.97 s 0.133 pp , and the dashed line shows the second-order log fit, 3.18−0.57 ln(spp)+0.216 ln 2 (spp). The open stars show the predictions by the PDE approach with the error bars of 5% uncertainty.…”

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confidence: 99%

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Multihadron production dynamics exploring the energy balance in hadronic and nuclear collisions

et al. 2016

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The relation of multihadron production in nucleus-nucleus and (anti)proton-proton collisions is studied by exploring the collision-energy and centrality dependencies of the charged particle mean multiplicity in the measurements to date. The study is performed in the framework of the recently proposed effectiveenergy approach which, under the proper scaling of the collision energy, combines the constituent quark picture with Landau relativistic 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. By means of this scaling, referred to as energy-balanced limiting fragmentation scaling, one reproduces the pseudorapidity spectra for all centralities. The scaling elucidates some differences in the multiplicity and midrapidity density centrality dependence obtained at RHIC and LHC. These findings reveal an inherent similarity in the multiplicity energy dependence from the most central collisions and centrality data. Predictions are made for the mean multiplicities to be measured in proton-proton and heavy-ion collisions at the LHC.

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Section: The Participant Dissipating Energy Approachmentioning

confidence: 99%

mentioning

confidence: 99%

Multihadron production dynamics exploring the energy balance in hadronic and nuclear collisions

et al. 2016

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“…(3) for the AA mean multiplicity based on:pp collisions at FNAL by E735 Collab. [56,57], at CERN by UA5 Collab. at √ spp = 546 GeV [45] and √ spp = 200 and 900 GeV [58]; pp collisions at CERN-ISR [46], and the ALICE, CMS and CDF multiplicities, calculated using the E735 fit, 3.102 s 0.178 pp [57], and the data from bubble chamber experiments [50,59] the latter having been compiled and analysed in [60].…”

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confidence: 99%

Relating multihadron production in hadronic and nuclear collisions

2010

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The energy-dependence of charged particle mean multiplicity and pseudorapidity density at midrapidity measured in nucleus-nucleus and (anti)proton-proton collisions are studied in the entire available energy range. The study is performed using a model, which considers the multiparticle production process according to the dissipating energy of the participants and their types, namely a combination of the constituent quark picture together with Landau relativistic hydrodynamics. The model reveals interrelations between the variables under study measured in nucleusnucleus and nucleon-nucleon collisions. Measurements in nuclear reactions are shown to be well reproduced by the measurements in pp/pp interactions and the corresponding fits are presented. Different observations in other types of collisions are discussed in the framework of the proposed model. Predictions are made for measurements at the forthcoming LHC energies. 1.Soft hadron multiparticle production is one of the most intriguing topics in high-energy interaction studies. Data have been investigated in different types of interactions, ranging from lepton-lepton to nucleus-nucleus interactions, and over a large energy span, covering several orders of magnitude. QCD, the theory of strong interactions, has provided partonic description of many observations. However, the problem of soft multiparticle production still eludes a complete understanding and remains one of the challenging problems in high-energy physics [1]. The new high-energy data from LHC provide an opportunity to look at the system under new conditions. Of special interest are nucleusnucleus collisions, probing nuclear matter at extreme conditions, where new forms of matter are expected to be created a e-mail: sedward@mail.cern.ch b e-mail: Alexandre.Sakharov@cern.ch at very high densities and temperatures. The data available from RHIC experiments allow an interesting comparison of the particle production mechanisms with the less complex e + e − and pp systems. In this context, the global, or bulk, variables such as the average charged particle multiplicity and particle densities (spectra), which are the first available experimental observables, are of fundamental interest [1-3] as they are sensitive to the underlying interaction dynamics.In this paper we consider the center-of-mass (c.m.) energy dependence of the average multiplicity and near midrapidity density of charged hadrons produced in nucleusnucleus and (anti)proton-proton collisions. Whereas the multiplicity is sensitive mostly to the fraction of energy being transformed into observed particles in a given reaction, the midrapidity density reflects different stages of the reaction. Both variables increase with the collision c.m. energy. Recent measurements at RHIC follow the trends observed in e + e − and proton-proton interactions. The values of both bulk variables are found [4,5] to be similar when comparing the measurements in e + e − interactions at the c.m. energy of √ s ee , and in most central ("head-on") heavy-ion col...

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“…Here q is the probability of finding a central event in which plasma is formed, P had n is the multiplicity distribution for purely hadronic events with mean N had , and P qg n is the multiplicity distribution for events in which a plasma was formed with mean N qg . Experimentally one would expect to see a bump in P n at larger values of n. A structure like that was found in charged particle multiplicity distributions in pp collisions at the CERN [14,15] and Fermilab [16,17] colliders. For energies larger then 540 GeV a shoulder develops in the multiplicity distribution, becoming more pronounced as the beam energy increases.…”

Section: Consequences For the Multiplicity Distributionmentioning

confidence: 69%

Inhomogeneous nucleation of quark-gluon plasma in high energy nuclear collisions

Kapusta

Vischer

1995

Phys. Rev. C

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We estimate the probability that a hard nucleon-nucleon collision is able to nucleate a seed of quark-gluon plasma in the surrounding hot and dense hadronic matter formed during a central collision of two large nuclei at AGS energies. The probability of producing at least one such seed is on the order of 1 -100%. We investigate the influence of quark-gluon plasma formation on the observed multiplicity distribution and find that it may lead to noticeable structure in the form of a bump or shoulder.PACS number(s): 12.38. Mh, 25.75.+r, 24.60.k

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Results from E735 at the tevatron proton-antiproton collider with √s = 1.8 TeV

Cited by 21 publications

References 19 publications

Multihadron production dynamics exploring the energy balance in hadronic and nuclear collisions

Multihadron production dynamics exploring the energy balance in hadronic and nuclear collisions

Relating multihadron production in hadronic and nuclear collisions

Inhomogeneous nucleation of quark-gluon plasma in high energy nuclear collisions

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