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Title: A Bayesian analysis of pentaquark signals from CLAS data

Journal Article · · Phys.Rev.Lett.
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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.

Research Organization:
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Sponsoring Organization:
USDOE - Office of Energy Research (ER)
DOE Contract Number:
AC05-06OR23177
OSTI ID:
917693
Report Number(s):
JLAB-PHY-07-728; DOE/OR/23177-0172; arXiv:0709.3154; TRN: US0805084
Journal Information:
Phys.Rev.Lett., Vol. 100
Country of Publication:
United States
Language:
English

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Related Subjects

43 PARTICLE ACCELERATORS
CEBAF ACCELERATOR
QUARKS
DATA ANALYSIS