2007/11/29 by L. S. Geng, Geng, L. S., E. Oset +5
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #hep-ph
paper · pdf · doi:10.48550/arxiv.0711.4778
8 pages, 2 figures, to appear in the proceedings of XII International Conference on Hadron Spectroscopy (HADRON07), Frascati, Italy, 8-13 October 2007
arxiv created 2007/11/29 · arxiv updated 2009/12/01
Recent studies based on unitary chiral perturbation theory (UχPT) found that the low-lying axial vector mesons can be dynamically generated due to the interaction of the pseudoscalar octet of the pion and the vector nonet of the rho. In particular, two poles in the second Riemann sheet have been associated to the nominal K1(1270) resonance. In this talk, we present a recent analysis of the WA3 data on K-p→ K-π+π- p at 63 GeV using the UχPT amplitudes, and show that it is in favor of the existence of two K1(1270)'s [Phys. Rev. D 75, 014017 (2007)].