Abstract
Current evidence does not favor the existence of the Θ + pentaquark, which was reported by several groups in the years after 2002. The question naturally arises: how could many groups could have seen fluctuations in their data at the level of 3–5 σ statistical significance? An example of a statistical fluctuation is given and the number of σ’s necessary for claims of discovery are examined. Using this guideline, a possible answer to the above question is presented.
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References
Diakonov, V. Petrov and M. Polyakov, Z. Phys. A 359, 305 (1997).
H. Walliser and H. Weigel, Eur. Phys. J. A 26, 361 (2005).
R. Jaffe and F. Wilczek, Phys. Rev. Lett. 91:232003 (2003).
T. Nakano et al. (LEPS), Phys. Rev. Lett. 91:012002 (2003); hep-ex/0301020.
M. Karliner and H.J. Lipkin, Phys. Lett. B575 (2003) 249; hep-ph/0307243.
V.V. Barmin et al.(DIANA), Phys. Atom. Nuclei 66, 1715 (2003); hep-ex/0304040.
S. Stepanyan, K. Hicks et al.(CLAS), Phys. Rev. Lett. 91:25001 (2003); hep-ex/0307018.
V. Kubarovsky et al., (CLAS), Phys. Rev. Lett. 92:032001 (2004); hep-ex/0311046.
J. Barth et al.(SAPHIR), Phys. Lett. B572, 127 (2003); hep-ex/0307083.
K. Hicks, Prog. Part. Nucl. Phys. 55 (2005) 647.
J. Pochodzalla, hep-ex/0406077.
A.G. Frodesen, O. Skjeggestad and H. Tofte, Probability and Statistics in Particle Physics, (Universitetforlaget, Oslo, 1979) Section 14.3.6.
B. McKinnon, K. Hicks et al., Phys. Rev. Lett. 96 (2006) 212001.
G. Trilling, J. Phys. G 33 (2006) 1019.
A. Airapetian et al.(HERMES), Phys. Lett. B585 (2004) 213; hep-ex/0312044.
K. Hicks, Int. J. Mod. Phys. A 20 (2005) 219.
J. Ellis, M. Karliner and M. Praszalowicz, JHEP 0405, 2 (2004); hep-ph/0401127.
C.E. Carlson, C.D. Carone, H.J. Kwee and V. Nazaryan, Phys. Rev. D70 (2004) 037501.
M. Battaglieri et al., Phys. Rev. Lett 96 (2006) 042001.
W. Dunwoodie, JLab Users Group Meeting (2006).
A.E. Asratyan, A.G. Dolgolkenko and M.A. Kubantsev, Phys. Atom. Nucl. 67, 682 (2004); hep-ex/0309042.
The ZEUS collaboration, Phys. Lett. B591 (2004) 7; hepex/0403051.
M. Abdel-Barv et al.(COSY-TOF), Phys. Lett. B595, 127 (2004); hep-ex/0403011.
S.-I. Nam, A. Hosaka, H.-C. Kim Phys. Lett. B633 (2006) 483.
H. Suganuma, H. Ichie, F. Okiharu, T. Takahashi, Nucl. Phys. A755 (2005) 399; see also hep-ph/0412271.
B.G. Lasscock, D.B. Leinweber, W. Melnitchouk, et al., Phys. Rev. D72 (2005) 074507.
N. Ishii, T. Doi, H. Iida et al., Phys. Rev. D72 (2005) 074503.
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Hicks, K. (2007). Pentaquark searches. In: Pochodzalla, J., Walcher, T. (eds) Proceedings of The IX International Conference on Hypernuclear and Strange Particle Physics. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-76367-3_74
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DOI: https://doi.org/10.1007/978-3-540-76367-3_74
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