Journal article
Authors list: Grishina, VY; Kondratyuk, LA; Cassing, W; Mirazita, M; Rossi, P
Publication year: 2005
Pages: 141-150
Journal: The European Physical Journal A
Volume number: 25
Issue number: 1
ISSN: 1434-6001
eISSN: 1434-601X
DOI Link: https://doi.org/10.1140/epja/i2005-10081-7
Publisher: Springer
Abstract:
Using the Quark-Gluon Strings Model -combined with Regge phenomenology- we perform a comparative analysis of Lambda, Sigma(0), Lambda(1520) and Theta(+) production in binary reactions induced by photon, pion and proton beams on the nucleon. We find that the existing experimental data on the gamma p -> K+Lambda differential and total cross-sections can be described very well by the model for photon energies 1-16 GeV and -t < 2 GeV2 assuming a dominant contribution of the K* Regge trajectory. Moreover, using the same parameters we also reproduce the total gamma p -> K+Sigma(0) and gamma p -> K+Lambda(1520) cross-sections suggesting a "universality" of the Rogge model. In order to check the consistency of the approach we evaluate the differential and total cross-sections for the reaction pi(-)p -> K-0 Lambda which is also found to be dominated by the K* Regge trajectory. Using the apparent "universality" of the Rogge model we extend our scheme to the analysis of the binary reactions gamma p -> (K) over bar (0)Theta(+), pi(-)p -> K-Theta(+) and pp -> Sigma(+)Theta(+) as well as the exclusive and inclusive Theta(+) production in the reactions pp -> p (K) over bar (0)Theta(+) and pp -> Theta+X. Our detailed studies demonstrate that Theta(+) production does not follow the "universality" principle, thus suggesting an essentially different internal structure of the exotic baryon relative to conventional hyperons or hyperon resonances.
Citation Styles
Harvard Citation style: Grishina, V., Kondratyuk, L., Cassing, W., Mirazita, M. and Rossi, P. (2005) Comparative Regge analysis of Λ, Σ0, Λ(1520) and Θ+ production in γp, πp and pp reactions, The European Physical Journal A, 25(1), pp. 141-150. https://doi.org/10.1140/epja/i2005-10081-7
APA Citation style: Grishina, V., Kondratyuk, L., Cassing, W., Mirazita, M., & Rossi, P. (2005). Comparative Regge analysis of Λ, Σ0, Λ(1520) and Θ+ production in γp, πp and pp reactions. The European Physical Journal A. 25(1), 141-150. https://doi.org/10.1140/epja/i2005-10081-7
Keywords
BARYON; DEUTERON PHOTODISINTEGRATION; KAON PHOTOPRODUCTION; POSITIVE-STRANGENESS; QUARK-GLUON STRINGS
