Regarding the axial-vector mesons
Abstract
The implications of the f 1(1285)- f 1(1420) mixing for the K 1(3 P 1)- K 1(1 P 1) mixing angle are investigated. Based on the f 1(1285)- f 1(1420) mixing angle ∼ 50° suggested from the analysis for a substantial body of data concerning the f 1(1420) and f 1(1285), the masses of the K 1(3 P 1) and K 1(1 P 1) are determined to be ∼ 1307.35±0.63 MeV and 1370.03±9.69 MeV, respectively, which therefore suggests that the K 1(3 P 1)- K 1(1 P 1) mixing angle is about ±(59.55±2.81)°. Also, it is found that the mass of the h ' 1(1 P 1) (mostly of s¯) state is about 1495.18±8.82 MeV. Comparison of the predicted results and the available experimental information of the h 1(1380) shows that without further confirmation on the h 1(1380), the assignment of the h 1(1380) as the s¯ member of the 1 P 1 meson nonet may be premature.
- Publication:
-
European Physical Journal A
- Pub Date:
- October 2005
- DOI:
- 10.1140/epja/i2005-10155-6
- arXiv:
- arXiv:hep-ph/0509215
- Bibcode:
- 2005EPJA...26..141L
- Keywords:
-
- 14.40.Ev Other strange mesons;
- 12.40.Yx Hadron mass models and calculations;
- High Energy Physics - Phenomenology
- E-Print:
- 11 pages, some typos corrected, accepted for publication in Eur. Phys. J. A