Investigation of background subtraction techniques for high mass dilepton physics

Details Investigation of background subtraction techniques for high mass dilepton physics Investigation of background subtraction techniques for high mass dilepton physics

2001-06-08

arxiv.org/abs/nucl-ex/0106008v2

Nucl.Instrum.Meth. A484 (2002) 564-572

Physics

Nuclear Physics

Nuclear Experiment

19 pages (RevTex) 6 figures, final version, to appear in Nucl. Instr. Methods A

Scientific paper

10.1016/S0168-9002(01)02005-8

The signals in high mass dilepton spectroscopy with nucleus-nucleus collisions at collider energies are superimposed on a generally large combinatorial background. Because this background contains a significant correlated like-sign component originating from B meson decays, the "like-sign" method to determine the background is inappropriate. We discuss strategies to deal with the correlations in the background. By taking advantage of the B meson oscillation mechanism and of the particular features of B meson decays a new method to measure the bbbar production cross-section is proposed.

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