We present measurements of the near side of triggered di-hadron correlations using neutral strange baryons (Λ,Λ¯) and mesons (KS0) at intermediate transverse momentum (3 < pT <6 GeV/c) to look for possible flavor and baryon-meson dependence. This study is performed in d+Au, Cu+Cu, and Au+Au collisions at sNN=200 GeV measured by the STAR experiment at RHIC. The near-side di-hadron correlation contains two structures, a peak which is narrow in azimuth and pseudorapidity consistent with correlations from jet fragmentation, and a correlation in azimuth which is broad in pseudorapidity. The particle composition of the jet-like correlation is determined using identified associated particles. The dependence of the conditional yield of the jet-like correlation on the trigger particle momentum, associated particle momentum, and centrality for correlations with unidentified trigger particles are presented. The neutral strange particle composition in jet-like correlations with unidentified charged particle triggers is not well described by PYTHIA. However, the yield of unidentified particles in jet-like correlations with neutral strange particle triggers is described reasonably well by the same model.

Near-side azimuthal and pseudorapidity correlations using neutral strange baryons and mesons in d+ Au, Cu + Cu, and Au + Au collisions at sNN =200 GeV / Abelev, B., Adamczyk, L., Adkins, J.K., Agakishiev, G., Aggarwal, M.M., Ahammed, Z., Alekseev, I., Aparin, A., Arkhipkin, D., Aschenauer, E.C., Ashraf, M.U., Attri, A., Averichev, G.S., Bai, X., Bairathi, V., Barnby, L.S., Bellwied, R., Bhasin, A., Bhati, A.K., Bhattarai, P., et al.. - In: PHYSICAL REVIEW C. - ISSN 2469-9985. - 94:1(2016), pp. 014910.1-014910.9. [10.1103/PhysRevC.94.014910]

Near-side azimuthal and pseudorapidity correlations using neutral strange baryons and mesons in d+ Au, Cu + Cu, and Au + Au collisions at sNN =200 GeV

Contin, G.;Di Ruzza, B.;Wang, F.;
2016-01-01

Abstract

We present measurements of the near side of triggered di-hadron correlations using neutral strange baryons (Λ,Λ¯) and mesons (KS0) at intermediate transverse momentum (3 < pT <6 GeV/c) to look for possible flavor and baryon-meson dependence. This study is performed in d+Au, Cu+Cu, and Au+Au collisions at sNN=200 GeV measured by the STAR experiment at RHIC. The near-side di-hadron correlation contains two structures, a peak which is narrow in azimuth and pseudorapidity consistent with correlations from jet fragmentation, and a correlation in azimuth which is broad in pseudorapidity. The particle composition of the jet-like correlation is determined using identified associated particles. The dependence of the conditional yield of the jet-like correlation on the trigger particle momentum, associated particle momentum, and centrality for correlations with unidentified trigger particles are presented. The neutral strange particle composition in jet-like correlations with unidentified charged particle triggers is not well described by PYTHIA. However, the yield of unidentified particles in jet-like correlations with neutral strange particle triggers is described reasonably well by the same model.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11368/2941930
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