dorsal/arxiv
View SchemaTowards the Observation of Signal over Background in Future Experiments
| Authors | S. I. Bityukov, N. V. Krasnikov |
|---|---|
| Categories | |
| ArXiv ID | physics/9808016 |
| URL | https://arxiv.org/abs/physics/9808016 |
Abstract
We propose a method to estimate the probability of new physics discovery in future high energy physics experiments. Physics simulation gives both the average numbers $<N_b>$ of background and $<N_s>$ of signal events. We find that the proper definition of the significance for $<N_b>, <N_s> \gg 1$ is $S_{12} = \sqrt{<N_s>+<N_b>} - \sqrt{<N_b>}$ in comparison with often used significances $S_1 = <N_s>/\sqrt{<N_b>}$ and $S_2 = <N_s>/\sqrt{<N_s> + <N_b>}$. We also propose a method for taking into account the systematical errors related to nonexact knowledge of background and signal cross sections. An account of such systematics is very essential in the search for supersymmetry at LHC.
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"abstract": "We propose a method to estimate the probability of new physics discovery in\nfuture high energy physics experiments. Physics simulation gives both the\naverage numbers $\u003cN_b\u003e$ of background and $\u003cN_s\u003e$ of signal events. We find\nthat the proper definition of the significance for $\u003cN_b\u003e, \u003cN_s\u003e \\gg 1$ is\n$S_{12} = \\sqrt{\u003cN_s\u003e+\u003cN_b\u003e} - \\sqrt{\u003cN_b\u003e}$ in comparison with often used\nsignificances $S_1 = \u003cN_s\u003e/\\sqrt{\u003cN_b\u003e}$ and $S_2 = \u003cN_s\u003e/\\sqrt{\u003cN_s\u003e +\n\u003cN_b\u003e}$. We also propose a method for taking into account the systematical\nerrors related to nonexact knowledge of background and signal cross sections.\nAn account of such systematics is very essential in the search for\nsupersymmetry at LHC.",
"arxiv_id": "physics/9808016",
"authors": [
"S. I. Bityukov",
"N. V. Krasnikov"
],
"categories": [
"physics.data-an",
"hep-ph"
],
"title": "Towards the Observation of Signal over Background in Future Experiments",
"url": "https://arxiv.org/abs/physics/9808016"
},
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