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An iterative method to estimate the combinatorial background

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arxiv 1808.05466 v1 pith:F2HNPE4F submitted 2018-08-14 physics.data-an hep-exnucl-exnucl-thphysics.ins-det

An iterative method to estimate the combinatorial background

classification physics.data-an hep-exnucl-exnucl-thphysics.ins-det
keywords backgrounditerativecollisionscombinatorialheavymethodresonancesbroad
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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The reconstruction of broad resonances is important for understanding the dynamics of heavy ion collisions. However, large combinatorial background makes this objective very challenging. In this work an innovative iterative method which identifies signal and background contributions without input models for normalization constants is presented. This technique is successfully validated on a simulated thermal cocktail of resonances. This demonstrates that the iterative procedure is a powerful tool to reconstruct multi-differentially inclusive resonant signals in high multiplicity events as produced in heavy ion collisions.

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