Non-flow, and what flow to subtract in jet-correlation

Details Non-flow, and what flow to subtract in jet-correlation Non-flow, and what flow to subtract in jet-correlation

2009-10-20

arxiv.org/abs/0910.3902v1

PoS High-pTphysics09 2009:038,2009

Physics

Nuclear Physics

Nuclear Experiment

11 pages 1 table 1 figure. Proceedings of 4th international workshop on High-pT physics at LHC-09, 2009, Prague, Czech Republi

Scientific paper

We derive analytical forms for non-flow contributions from cluster correlation to two-particle elliptic flow (v2{2}) measure. We also derive an analytical form for jet-correlation flow-background with the same cluster approach. We argue that the elliptic flow v2 parameter to be used in jet-correlation background is that from two-particle method excluding non-flow correlations unrelated to the reaction plane, but including cross-terms between cluster correlation and cluster flow. We verify our result with Monte Carlo simulations. We discuss how one may obtain the v2 parameter for jet-correlation background experimentally.

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