A Bayesian analysis of pentaquark signals from CLAS data

Details A Bayesian analysis of pentaquark signals from CLAS data A Bayesian analysis of pentaquark signals from CLAS data

2007-09-20

arxiv.org/abs/0709.3154v2

Phys.Rev.Lett.100:052001,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.100.052001

We examine the results of two measurements by the CLAS collaboration, one of which claimed evidence for a $\Theta^{+}$ pentaquark, whilst the other found no such evidence. The unique feature of these two experiments was that they were performed with the same experimental setup. Using a Bayesian analysis we find that the results of the two experiments are in fact compatible with each other, but that the first measurement did not contain sufficient information to determine unambiguously the existence of a $\Theta^{+}$. Further, we suggest a means by which the existence of a new candidate particle can be tested in a rigorous manner.

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