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arXiv · 0707.2203

On influence of experimental resolution on the statistical significance of a signal: implication for pentaquark searches

S. V. Chekanov·B. B. Levchenko
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Abstract

An analytical relationship between the statistical significance of an observed signal and the signal width in case of a large background was obtained. It can help to explain why high-energy experiments may have different conclusions on the existence of new particles. We illustrate our approach using the experimental data on searches for the Theta+(1530) pentaquark state. The obtained relationship is also useful for planning of future experiments designed to search for signals of new particles in invariant-mass distributions.

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S. V. Chekanov, B. B. Levchenko. 2009-06-22. On influence of experimental resolution on the statistical significance of a signal: implication for pentaquark searches. https://doi.org/10.1103/physrevd.76.074025

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