Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2007-07-15
Phys.Rev.D76:074025,2007
Physics
High Energy Physics
High Energy Physics - Phenomenology
12 pages, 3 eps figures, 2 tables
Scientific paper
10.1103/PhysRevD.76.074025
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.
Chekanov S. V.
Levchenko B. B.
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