Baryon Stopping and Charged Particle Distributions in Central<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>P</mml:mi><mml:mi>b</mml:mi><mml:mo>+</mml:mo><mml:mi>P</mml:mi><mml:mi>b</mml:mi></mml:math>Collisions at 158 GeV per Nucleon
H. AppelshäuserHeidelberg University, Heidelberg, GermanyJ. BächlerEuropean Organization for Nuclear Research, Geneva, SwitzerlandS. BaileyUniversity of Washington, Seattle, United StatesL. S. BarnbyUniversity of Birmingham, Birmingham, United KingdomJ. BartkePolish Academy of Sciences, Warsaw, PolandR.A. BartonUniversity of Birmingham, Birmingham, United KingdomH. BiałkowskaA. BillmeierGoethe University Frankfurt, Frankfurt am Main, GermanyC. O. BlythUniversity of Birmingham, Birmingham, United KingdomR. BockGSI Helmholtz Centre for Heavy Ion Research, Darmstadt, GermanyB. BoimskaC. BormannGoethe University Frankfurt, Frankfurt am Main, GermanyF.P. BradyUniversity of California, Davis, Davis, United StatesR. BrockmannGSI Helmholtz Centre for Heavy Ion Research, Darmstadt, GermanyR. BrunEuropean Organization for Nuclear Research, Geneva, SwitzerlandP. BunčićGoethe University Frankfurt, Frankfurt am Main, GermanyHelen Louise CainesUniversity of Birmingham, Birmingham, United KingdomD. CebraUniversity of California, Davis, Davis, United StatesG.E. CooperUniversity of California, Berkeley, Berkeley, United StatesJ. G. CramerUniversity of Washington, Seattle, United StatesP. CsatóHungarian Academy of Sciences, Budapest, HungaryJ. DunnUniversity of California, Davis, Davis, United StatesV. EckardtMax Planck Society, Munich, GermanyF. EckhardtPhilipps University of Marburg, Marburg, GermanyM.I. FergusonEuropean Organization for Nuclear Research, Geneva, SwitzerlandHubertus FischerEuropean Organization for Nuclear Research, Geneva, SwitzerlandD. FlierlGoethe University Frankfurt, Frankfurt am Main, GermanyZ. FodorEötvös Loránd University, Budapest, HungaryP. FokaGoethe University Frankfurt, Frankfurt am Main, GermanyP. FreundMax Planck Society, Munich, GermanyV. FriesePhilipps University of Marburg, Marburg, GermanyM. FuchsGoethe University Frankfurt, Frankfurt am Main, GermanyF. GablerGoethe University Frankfurt, Frankfurt am Main, GermanyJ. GálHungarian Academy of Sciences, Budapest, HungaryR. GanzMax Planck Society, Munich, GermanyM. GaździckiGoethe University Frankfurt, Frankfurt am Main, GermanyW. GeistMax Planck Society, Munich, GermanyE. GładyszPolish Academy of Sciences, Warsaw, PolandJ. GrebieszkowUniversity of Warsaw, Warsaw, PolandJ. GüntherGoethe University Frankfurt, Frankfurt am Main, GermanyJohn William HarrisYale University, New Haven, United StatesS. HegyiHungarian Academy of Sciences, Budapest, HungaryTimothy P. HenkelPhilipps University of Marburg, Marburg, GermanyL.A. HillUniversity of Birmingham, Birmingham, United KingdomI. HuangUniversity of California, Davis, Davis, United StatesHolm Gero HümmlerMax Planck Society, Munich, GermanyG. IgoUniversity of California, Los Angeles, Los Angeles, United StatesD. IrmscherGSI Helmholtz Centre for Heavy Ion Research, Darmstadt, GermanyP. JacobsUniversity of California, Berkeley, Berkeley, United StatesP. JonesUniversity of Birmingham, Birmingham, United KingdomK. KadijaMax Planck Society, Munich, GermanyV. I. KolesnikovJoint Institute for Nuclear Research, Dubna, RussiaM. KowalskiPolish Academy of Sciences, Warsaw, PolandB. LasiukUniversity of California, Los Angeles, Los Angeles, United StatesP. LévaiHungarian Academy of Sciences, Budapest, HungaryA. MalakhovJoint Institute for Nuclear Research, Dubna, RussiaS. MargetisUniversity of California, Berkeley, Berkeley, United StatesC. MarkertGSI Helmholtz Centre for Heavy Ion Research, Darmstadt, GermanyG. L. MelkumovJoint Institute for Nuclear Research, Dubna, RussiaA. MockMax Planck Society, Munich, GermanyJ. MolnárHungarian Academy of Sciences, Budapest, HungaryJ. M. NelsonUniversity of Birmingham, Birmingham, United KingdomM. OldenburgGoethe University Frankfurt, Frankfurt am Main, GermanyG. OdyniecUniversity of California, Berkeley, Berkeley, United StatesG. PállaHungarian Academy of Sciences, Budapest, HungaryA. D. PanagiotouNational and Kapodistrian University of Athens, Athens, GreeceA. PetridisNational and Kapodistrian University of Athens, Athens, GreeceAnne Marie PiperPhilipps University of Marburg, Marburg, GermanyR. PorterUniversity of California, Berkeley, Berkeley, United StatesA. M. PoskanzerUniversity of California, Berkeley, Berkeley, United StatesS. PoziombkaGoethe University Frankfurt, Frankfurt am Main, GermanyD. J. PrindleUniversity of Washington, Seattle, United StatesF. PühlhoferPhilipps University of Marburg, Marburg, GermanyJ. G. ReidUniversity of Washington, Seattle, United StatesR. RenfordtGoethe University Frankfurt, Frankfurt am Main, GermanyW. RetykUniversity of Warsaw, Warsaw, PolandH. G. RitterUniversity of California, Berkeley, Berkeley, United StatesD. RöhrichGoethe University Frankfurt, Frankfurt am Main, GermanyC. RolandGSI Helmholtz Centre for Heavy Ion Research, Darmstadt, GermanyG. RolandGoethe University Frankfurt, Frankfurt am Main, GermanyH. RudolphGoethe University Frankfurt, Frankfurt am Main, GermanyA. RybickiPolish Academy of Sciences, Warsaw, PolandA. SandovalGSI Helmholtz Centre for Heavy Ion Research, Darmstadt, GermanyH. SannGSI Helmholtz Centre for Heavy Ion Research, Darmstadt, GermanyA. SemenovJoint Institute for Nuclear Research, Dubna, RussiaE. SchäferMax Planck Society, Munich, GermanyD. SchmischkeGoethe University Frankfurt, Frankfurt am Main, GermanyN. SchmitzMax Planck Society, Munich, GermanyStefan SchönfelderMax Planck Society, Munich, GermanyP. SeybothMax Planck Society, Munich, GermanyF. SiklérHungarian Academy of Sciences, Budapest, HungaryE. SkrzypczakUniversity of Warsaw, Warsaw, PolandG.T.A. SquierUniversity of Birmingham, Birmingham, United KingdomR. StockGoethe University Frankfurt, Frankfurt am Main, GermanyH. StröbeleGoethe University Frankfurt, Frankfurt am Main, GermanyI. SzentpéteryHungarian Academy of Sciences, Budapest, HungaryJ. SziklaiHungarian Academy of Sciences, Budapest, HungaryM. ToyUniversity of California, Berkeley, Berkeley, United StatesT. A. TrainorUniversity of Washington, Seattle, United StatesS. TrentalangeUniversity of California, Los Angeles, Los Angeles, United States
1999lv
ABI
Аннотация
Net proton and negative hadron spectra for central $\mathrm{Pb}+\mathrm{Pb}$ collisions at 158 GeV per nucleon at the CERN Super Proton Synchrotron were measured and compared to spectra from lighter systems. Net baryon distributions were derived from those of net protons. Stopping (rapidity shift with respect to the beam) and mean transverse momentum $〈{p}_{T}〉$ of net baryons increase with system size. The rapidity density of negative hadrons scales with the number of participant nucleons for nuclear collisions, whereas their $〈{p}_{T}〉$ is independent of system size. The $〈{p}_{T}〉$ dependence upon particle mass and system size is consistent with larger transverse flow velocity at midrapidity for $\mathrm{Pb}+\mathrm{Pb}$ compared to $\mathrm{S}+\mathrm{S}$ central collisions.
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