Abstract
We present azimuthal angular correlations measured in central d+Au collisions at sNN=200GeV between charged hadrons and energy deposited in calorimeter towers. The charged hadrons are measured at mid-rapidity |η|<0.35, and the energy deposits are measured at forward and backward rapidities (−3.7<η<−3.1, Au-going direction and 3.1<η<3.9, d-going direction). An enhanced near-side angular correlation across |Δη|> 2.75 is observed in d+Au collisions. We also present the correlation between energy deposited in the d-going and Au-going direction. Similar to previous case, an enhancement is also observed in the near-side pairs correlations in most central d+Au collisions which across |Δη|>6.2. Using the event-plane method applied to the Au-going energy distribution, we extract the anisotropy strength v2 for inclusive charged hadrons at mid-rapidity up to pT=4.5GeV/c. We also present the measurement of v2 for identified π± and (anti)protons in central d+Au collisions, and observe a mass-ordering pattern similar to that seen in A+A heavy ion collisions. These results are compared with measurements from p+Pb at sNN=5.02TeV.
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