Authors

Abele, A
Adomeit, J
Amsler, C
Baker, CA
Barnett, BM
Batty, CJ
Benayoun, M
Bischoff, S
Blum, P
Braune, K
Case, T
Crede, V
Crowe, KM
Degener, T
Doser, M
Dunnweber, W
Engelhardt, D
Faessler, MA
Giarritta, P
Haddock, RP
Heinsius, FH
Heinzelmann, M
Herbstrith, A
Hessey, NP
Hidas, P
Holtzhaussen, C
Jamnik, D
Kalinowsky, H
Kammel, P
Kisiel, J
Klempt, E
Koch, H
Kunze, M
Kurilla, U
Lakata, M
Landua, R
Matthay, H
Meyer, CA
Meyer-Wildhagen, F
Montanet, L
Ouared, R
Peters, K
Pick, B
Ratajczak, M
Regenfus, C
Roethel, W
Spanier, S
Stock, H
Strohbusch, U
Suffert, M
Suh, JS
Thoma, U
Tischhauser, M
Uman, I
Wallis-Plachner, S
Walther, D
Wiedner, U
Wittmack, K

Citation

A. Abele et al., 4 pi-decays of scalar and vector mesons, EUR PHY J C, 21(2), 2001, pp. 261-269

Citations number

30

Language

INGLESE

art.tipo

Article

Categorie Soggetti

Physics

Journal title

EUROPEAN PHYSICAL JOURNAL C

ISSN journal

1434-6044
→ ACNP

Volume

21

Issue

2

Year of publication

2001

Pages

261 - 269

Database

ISI

SICI code

1434-6044(200106)21:2<261:4POSAV>2.0.ZU;2-U

Abstract

Two different pn annihilation modes, (p) over barn --> pi (-)4 pi (0) and (
p) over barn --> 2 pi (-)2 pi (0)pi (+), are used to study the 4 pi -decays
of scalar and vector mesons. The data are dominated by 4 pi scalar isoscal
ar interactions. At least two states are needed, the f(0)(1370) and the f(0
)(1500). The 4 pi -decay width of the f(0)(1370) is more than 6 times large
r than the sum of all observed partial decay widths to two pseudoscalar mes
ons. The state has important couplings to (pi pi )s(pi pi )s and to pp. The
4 pi -decays of the f(0)(1500) represent about half of its total width. Th
e p(1450) and the p(1700) are observed in several 4 pi decay modes. The rat
io of the 4 pi relative to the 2 pi decay of the p(1450) is in contradictio
n to its proposed interpretation as a pure hybrid state but it suggests tha
t it is not a pure 2(3)S(1)-state either. Our results favour the assignment
of the p(1700) as D-3(1) state, its interpretation as 3(3)S(1)-state is le
ss plausible.