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Multiplicity dependence of inclusive pt spectra from p-p collisions at s=200GeV

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    SYSNO ASEP0096778
    Document TypeJ - Journal Article
    R&D Document TypeJournal Article
    Subsidiary JOstatní články
    TitleMultiplicity dependence of inclusive pt spectra from p-p collisions at s=200GeV
    TitleMultiplicitní závislost inkluzivních pt-spekter ze srážek p-p při s=200GeV
    Author(s) Adams, J. (US)
    Bielčík, J. (CZ)
    Bielčíková, J. (CZ)
    Bysterský, Michal (UJF-V)
    Chaloupka, Petr (UJF-V) RID
    Source TitlePhysical Review D: Particles, Fields, Gravitation and Cosmology. - : American Physical Society - ISSN 1550-7998
    Roč. 74, č. 3 (2006), 032006-032006
    Number of pages1 s.
    Languageeng - English
    CountryUS - United States
    Keywordsanalysis ; spectrum
    Subject RIVBF - Elementary Particles and High Energy Physics
    R&D ProjectsGA202/04/0793 GA ČR - Czech Science Foundation (CSF)
    CEZAV0Z10480505 - UJF-V (2005-2011)
    AnnotationWe report measurements of transverse momentum pt spectra for ten event multiplicity classes of p-p collisions at s=200GeV. By analyzing the multiplicity dependence we find that the spectrum shape can be decomposed into a part with amplitude proportional to multiplicity and described by a Lèvy distribution on transverse mass mt, and a part with amplitude proportional to multiplicity squared and described by a gaussian distribution on transverse rapidity yt. The functional forms of the two parts are nearly independent of event multiplicity. The two parts can be identified with the soft and hard components of a two-component model of p-p collisions. This analysis then provides the first isolation of the hard component of the $p_t$ spectrum as a distribution of simple form on $y_t$.
    WorkplaceNuclear Physics Institute
    ContactMarkéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228
    Year of Publishing2008
Number of the records: 1  

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