Near-threshold Lambda(1520) production by the gamma p -> K+Lambda(1520) reaction at forward K+ angles
High Energy Physics - Experiment
2015-03-13 v2
Abstract
Differential cross sections and photon-beam asymmetries for the gamma p -> K+ Lambda(1520) reaction have been measured with linearly polarized photon beams at energies from the threshold to 2.4 GeV at 0.6<cos(theta)<1. A new bump structure was found at W=2.11 GeV in the cross sections. The bump is not well reproduced by theoretical calculations introducing a nucleon resonance with J<=3/2. This result suggests that the bump might be produced by a nucleon resonance possibly with J>=5/2 or by a new reaction process, for example an interference effect with the phi photoproduction having a similar bump structure in the cross sections.
Cite
@article{arxiv.0906.0197,
title = {Near-threshold Lambda(1520) production by the gamma p -> K+Lambda(1520) reaction at forward K+ angles},
author = {H. Kohri and D. S. Ahn and J. K. Ahn and H. Akimune and W. C. Chang and S. Date' and H. Ejiri and S. Fukui and H. Fujimura and M. Fujiwara and K. Hicks and A. Hosaka and T. Hotta and K. Imai and T. Ishikawa and T. Iwata and K. Kino and S. Makino and T. Matsuda and T. Matsumura T. Mibe and M. Miyabe and Y. Miyachi and N. Muramatsu and T. Nakano and S. i. Nam and M. Niiyama and M. Nomachi and Y. Ohashi and C. Rangacharyulu and A. Sakaguchi and H. Shimizu and Y. Sugaya and M. Sumihama and A. I. Titov and Y. Toi and K. Yonehara and T. Yorita and M. Yosoi and R. G. T. Zegers},
journal= {arXiv preprint arXiv:0906.0197},
year = {2015}
}
Comments
5 pages, 4 figures, published in Phys. Rev. Lett