Jet-Hadron Correlations in $\sqrt{s_{NN}} = 200$ GeV $p+p$ and Central $Au+Au$ Collisions

The STAR collaboration
Phys.Rev.Lett. 112 (2014) 122301, 2014.

Abstract (data abstract)
BNL-RHIC. Azimuthal angular correlations of charged hadrons with respect to the axis of a reconstructed (trigger) jet in Au+Au and p+p collisions at sNN−−−sqrt=200GeV in STAR are presented. The trigger jet population in Au+Au collisions is biased towards jets that have not interacted with the medium, allowing easier matching of jet energies between Au+Au and p+p collisions while enhancing medium effects on the recoil jet. The associated hadron yield of the recoil jet is significantly suppressed at high transverse momentum (passocT) and enhanced at low passocT in 0-20% central Au+Au collisions compared to p+p collisions, which is indicative of medium-induced parton energy loss in ultrarelativistic heavy-ion collisions.

  • Figure 2a(AuAu)

    10.17182/hepdata.89880.v1/t1

    Jet-hadron correlations after background subtraction. Shown with Gaussian fits to jet peaks and systematic uncertanty bands Au+Au(0.5-1 GeV).

  • Figure 2a(pp)

    10.17182/hepdata.89880.v1/t2

    Jet-hadron correlations after background subtraction. Shown with Gaussian fits to jet peaks and systematic uncertanty bands p+p(0.5-1).

  • Figure 2b(AuAu)

    10.17182/hepdata.89880.v1/t3

    Jet-hadron correlations after background subtraction. Shown with Gaussian fits to jet peaks and systematic uncertanty bands Au+Au(4-6 GeV).

  • Figure 2b(pp)

    10.17182/hepdata.89880.v1/t4

    Jet-hadron correlations after background subtraction. Shown with Gaussian fits to jet peaks and systematic uncertanty bands Au+Au(4-6 GeV).

  • Figure 3a(pp)

    10.17182/hepdata.89880.v1/t5

    Gaussian widths of the awayside jet peaks in p+p(10-15 GeV).

  • Figure 3a(AuAu)

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    Gaussian widths of the awayside jet peaks in Au+Au(10-15 GeV).

  • Figure 3b(pp)

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    Gaussian widths of the awayside jet peaks in p+p(20-40 GeV).

  • Figure 3b(AuAu)

    10.17182/hepdata.89880.v1/t8

    Gaussian widths of the awayside jet peaks in Au+Au(20-40 GeV).

  • Figure 4a

    10.17182/hepdata.89880.v1/t9

    Awayside momentum difference(DAA) shown for 10-15 GeV.

  • Figure 4b

    10.17182/hepdata.89880.v1/t10

    Awayside momentum difference(DAA) shown for 10-15 GeV.

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