Violation of Geometrical Scaling in pp Collisions at NA61/SHINE

We analyze geometrical scaling (GS) of negative pion multiplicity p_T distributions at NA61/SHINE energies. We show that even though NA61/SHINE energies are low, one may expect to find GS in the particle spectra. We argue that qualitative behavior of ratios of multiplicities at different energies is...

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Detalles Bibliográficos
Autor principal: Praszalowicz, Michal
Lenguaje:eng
Publicado: 2013
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1103/PhysRevD.87.071502
http://cds.cern.ch/record/1507884
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author Praszalowicz, Michal
author_facet Praszalowicz, Michal
author_sort Praszalowicz, Michal
collection CERN
description We analyze geometrical scaling (GS) of negative pion multiplicity p_T distributions at NA61/SHINE energies. We show that even though NA61/SHINE energies are low, one may expect to find GS in the particle spectra. We argue that qualitative behavior of ratios of multiplicities at different energies is in agreement with a simple picture of GS which is violated for p_T smaller than some nonperturbative scale Lambda and when larger Bjorken x of one of the scattering patrons crosses x_max above which gluonic cloud becomes dilute and quark degrees of freedom become important.
id cern-1507884
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2013
record_format invenio
spelling cern-15078842019-09-30T06:29:59Zdoi:10.1103/PhysRevD.87.071502http://cds.cern.ch/record/1507884engPraszalowicz, MichalViolation of Geometrical Scaling in pp Collisions at NA61/SHINEParticle Physics - PhenomenologyWe analyze geometrical scaling (GS) of negative pion multiplicity p_T distributions at NA61/SHINE energies. We show that even though NA61/SHINE energies are low, one may expect to find GS in the particle spectra. We argue that qualitative behavior of ratios of multiplicities at different energies is in agreement with a simple picture of GS which is violated for p_T smaller than some nonperturbative scale Lambda and when larger Bjorken x of one of the scattering patrons crosses x_max above which gluonic cloud becomes dilute and quark degrees of freedom become important.arXiv:1301.4647oai:cds.cern.ch:15078842013-01-22
spellingShingle Particle Physics - Phenomenology
Praszalowicz, Michal
Violation of Geometrical Scaling in pp Collisions at NA61/SHINE
title Violation of Geometrical Scaling in pp Collisions at NA61/SHINE
title_full Violation of Geometrical Scaling in pp Collisions at NA61/SHINE
title_fullStr Violation of Geometrical Scaling in pp Collisions at NA61/SHINE
title_full_unstemmed Violation of Geometrical Scaling in pp Collisions at NA61/SHINE
title_short Violation of Geometrical Scaling in pp Collisions at NA61/SHINE
title_sort violation of geometrical scaling in pp collisions at na61/shine
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1103/PhysRevD.87.071502
http://cds.cern.ch/record/1507884
work_keys_str_mv AT praszalowiczmichal violationofgeometricalscalinginppcollisionsatna61shine

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