Conference paper

Publication year: 2005

Pages: 683-685

Journal: International Journal of Modern Physics A

Volume number: 20

Issue number: 2-3

ISSN: 0217-751X

eISSN: 1793-656X

DOI Link: https://doi.org/10.1142/S0217751X05022159

Conference: 8th International Workshop on Meson Production, Properties and Interaction (MESON 2004)

Publisher: World Scientific Publishing

Abstract: 
A narrow baryon state has been found in the channel pK(s)(0) -> p pi(+)pi(-) of quasi-real photoproduction on a deuterium target at the HERMES experiment. Its mass is 1528 +/- 2.6 +/- 2.1 MeV and its width is somewhat larger than the experimental resolution of 4.3-6.2 MeV. This state may be interpreted as the predicted S=+1 exotic circle minus(+) pentaquark baryon. No signal for a hypothetical circle minus(++) baryon was observed, indicating that the circle minus(+) is an isoscalar particle.

Harvard Citation style: Rubácek, L. (2005) Evidence for a narrow baryon state with |S|=1 at the HERMES experiment, International Journal of Modern Physics A, 20(2-3), pp. 683-685. https://doi.org/10.1142/S0217751X05022159

APA Citation style: Rubácek, L. (2005). Evidence for a narrow baryon state with |S|=1 at the HERMES experiment. International Journal of Modern Physics A. 20(2-3), 683-685. https://doi.org/10.1142/S0217751X05022159