Search for Σ50,N50, and Θ++ pentaquark states

Qiang, Y. et al. (2007) Search for Σ50,N50, and Θ++ pentaquark states. Physical Review C, 75(5), 055208. (doi: 10.1103/PhysRevC.75.055208)

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A high-resolution (σ<sub>instr.</sub>=1.5 MeV) search for narrow states (Γ<10 MeV) with masses of M<sub>x</sub>≈1500–1850 MeV in ep→e′K<sup>+</sup>X,e′K<sup>-</sup>X, and e′π<sup>+</sup>X electroproduction at small angles and low Q<sup>2</sup> was performed. These states would be candidate partner states of the reported Θ<sup>+</sup>(1540) pentaquark. No statistically significant signal was observed in any of the channels at 90% C.L. Upper limits on forward production were determined to be between 0.8% and 4.9% of the Λ(1520) production cross section, depending on the channel and the assumed mass and width of the state.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Annand, Dr John and Hamilton, Dr David
Authors: Qiang, Y., Annand, J., Arrington, J., Azimov, Y.I., Bertozzi, W., Cates, G., Chen, J.P., Choi, S., Chudakov, E., Cusanno, F., de Jager, C.W., Epstein, M., Feuerbach, R.J., Garibaldi, F., Gayou, O., Gilman, R., Gomez, J., Hamilton, D.J., Hansen, J.O., Higinbotham, D.W., Holmstrom, T., Iodice, M., Jiang, X., Jones, M., LeRose, J., Lindgren, R., Liyanage, N., Margaziotis, D.J., Markowitz, P., Mamyan, V., Michaels, R., Meziani, Z.E., Monaghan, P., Munoz-Camacho, C., Nelyubin, V., Paschke, K., Piasetzky, E., Rachek, I., Reimer, P.E., Reinhold, J., Reitz, B., Roche, R., Saha, A., Sarty, A.J., Schulte, E., Shahinyan, A., Sheyor, R., Singh, J., Strakovsky, I.I., Subedi, R., Suleiman, R., Sulkovsky, V., Wojtsekhowski, B., and Zheng, X.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Physical Review C
Publisher:American Physical Society
ISSN (Online):1089-490X
Published Online:25 May 2007

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