Change of the azimuthal asymmetry at high momentum with different parton absorptions in a quark-gluon plasma

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3 Citations (Scopus)

Abstract

We present simple geometrical model calculations for parton suppression at high momentum, where the fragmentation process is dominant, in relativistic heavy-ion collisions. Depending on the position of hard scattering, the pattern of the parton absorption changes because of the different pathlengths to escape the overlapped zone. The out-of-plane yield of partons is more suppressed than the in-plane yield in the overlap zone, especially for large impact parameters. In addition, the in-plane yield is expected to decrease as the parton absorption is increased because of the strong parton absorption even before they reach the geometrical boundary of the overlapped zone. The present result is in contrast to that of previous calculations in which the saturation effect was observed to occur at a rather small absorption coefficient.

Original languageEnglish
Pages (from-to)2271-2275
Number of pages5
JournalJournal of the Korean Physical Society
Volume49
Issue number6
Publication statusPublished - 2006 Dec 1

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partons
asymmetry
quarks
momentum
ionic collisions
escape
absorptivity
fragmentation
retarding
saturation
scattering

Keywords

  • Azimuthal asymmetry
  • Jet quenching
  • Parton absorption
  • Quark-gluon plasma
  • Relativistic heavy-ion collision

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

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title = "Change of the azimuthal asymmetry at high momentum with different parton absorptions in a quark-gluon plasma",
abstract = "We present simple geometrical model calculations for parton suppression at high momentum, where the fragmentation process is dominant, in relativistic heavy-ion collisions. Depending on the position of hard scattering, the pattern of the parton absorption changes because of the different pathlengths to escape the overlapped zone. The out-of-plane yield of partons is more suppressed than the in-plane yield in the overlap zone, especially for large impact parameters. In addition, the in-plane yield is expected to decrease as the parton absorption is increased because of the strong parton absorption even before they reach the geometrical boundary of the overlapped zone. The present result is in contrast to that of previous calculations in which the saturation effect was observed to occur at a rather small absorption coefficient.",
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T1 - Change of the azimuthal asymmetry at high momentum with different parton absorptions in a quark-gluon plasma

AU - Hong, Byungsik

PY - 2006/12/1

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N2 - We present simple geometrical model calculations for parton suppression at high momentum, where the fragmentation process is dominant, in relativistic heavy-ion collisions. Depending on the position of hard scattering, the pattern of the parton absorption changes because of the different pathlengths to escape the overlapped zone. The out-of-plane yield of partons is more suppressed than the in-plane yield in the overlap zone, especially for large impact parameters. In addition, the in-plane yield is expected to decrease as the parton absorption is increased because of the strong parton absorption even before they reach the geometrical boundary of the overlapped zone. The present result is in contrast to that of previous calculations in which the saturation effect was observed to occur at a rather small absorption coefficient.

AB - We present simple geometrical model calculations for parton suppression at high momentum, where the fragmentation process is dominant, in relativistic heavy-ion collisions. Depending on the position of hard scattering, the pattern of the parton absorption changes because of the different pathlengths to escape the overlapped zone. The out-of-plane yield of partons is more suppressed than the in-plane yield in the overlap zone, especially for large impact parameters. In addition, the in-plane yield is expected to decrease as the parton absorption is increased because of the strong parton absorption even before they reach the geometrical boundary of the overlapped zone. The present result is in contrast to that of previous calculations in which the saturation effect was observed to occur at a rather small absorption coefficient.

KW - Azimuthal asymmetry

KW - Jet quenching

KW - Parton absorption

KW - Quark-gluon plasma

KW - Relativistic heavy-ion collision

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