Observation of Pseudoscalar and Axial Vector Resonances in pi- p -> K+ K- pi0 n at 18 GeV

Journal Article · Sat Sep 01 00:00:00 EDT 2001 · Physics Letters B

DOI:https://doi.org/10.1016/S0370-2693(01)00951-0· OSTI ID:833898

Adams, G S; Adams, T; Bar-Yam, Z; Bishop, J M; Bodyagin, V A; Brown, D S; Cason, N M; Chung, S U; Cummings, J P; Danyo, K; Demianov, A I; Denisov, S; Dorofeev, V; Dowd, J P; Eugenio, P; Fan, X L; Gribushin, A M; Hackenburg, R W; Hayek, M; Hu, J ; Ivanov, E I; Joffe, D; Kachaev, I; Kern, W; King, E; Kodolova, O L; Korotkikh, V L; Kostin, M A; Kuhn, Joachim; Lipaev, V; Losecco, J M; Lu, M; Manak, J J; Napolitano, J; Nozar, M; Olchanski, C; Ostrovidov, A I; Pedlar, T K; Popov, A; Ryabchikov, D; Sanjari, A H; Sarycheva, L I; Seth, K K; Shenhav, N; Shen, X; Shephard, W D; Sinev, N B; Stienike, D L; Taegar, S A; Thompson, D R; Tomaradze, A; Vardanyan, I N; Weygand, D P; White, D; Willutzki, H J; Yershov, A A

The number of pseudoscalar mesons in the mass range from 1400 to 1500 MeV/c{sup 2} has been a subject of considerable interest for many years, with several experiments having presented evidence for two closely spaced states. A new measurement of the reaction {pi}{sup -} p {yields} K{sup +} K{sup -} {pi}{sup 0}n has been made at a beam energy of 18 GeV. A partial wave analysis of the K{sup +} K{sup -} {pi}{sup 0} system shows evidence for three pseudoscalar resonances, {eta}(1295), {eta}(1416), and {eta}(1485), as well as two axial vectors, f{sub 1}(1285), and f{sub 1}(1420). Their observed masses, widths and decay properties are reported. No signal was observed for C(1480), an I{sub G} J{sup PC} = 1{sup +} 1{sup --} state previously reported in {phi}{pi}{sup 0} decay.

• Research Organization: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
• Sponsoring Organization: USDOE Office of Energy Research (ER) (US)
• DOE Contract Number: AC05-84ER40150
• OSTI ID: 833898
• Report Number(s): JLAB-PHY-01-74; DOE/ER/40150-2927; hep-ex/0107042; TRN: US0406895
• Journal Information: Physics Letters B, Vol. 516, Issue 3-4; Other Information: PBD: 1 Sep 2001
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
DECAY
PARTIAL WAVES
PSEUDOSCALAR MESONS
PSEUDOSCALARS
VECTORS