Authors

Citation

U. Thoma, Study of (p)over-bar N annihilations into five pions, NUCL PHYS A, 675(1-2), 2000, pp. 76C-79C

Citations number

12

Language

INGLESE

art.tipo

Article

Categorie Soggetti

Physics

Journal title

NUCLEAR PHYSICS A

ISSN journal

0375-9474
→ ACNP

Volume

675

Issue

1-2

Year of publication

2000

Pages

76C - 79C

Database

ISI

SICI code

0375-9474(20000731)675:1-2<76C:SO(NAI>2.0.ZU;2-7

Abstract

The preliminary analysis of four high statistic 5 pi data sets taken with t
he Crystal Barrel detector shows that at least two scalar states are needed
to describe the data, the f(0)(1370) with m = 1395 +/- 40 MeV/c(2), Gamma
= 275 +/- 55 MeV/c(2) and the f(0)(1500) with mass and width compatible wit
h previous findings. The first one decays dominantely into sigma sigma and
rho rho, the second one into sigma sigma and pi*(1300)pi. In addition to th
e dominant scalar intensity the pi*(1300) plays an important role in the 5
pi-dynamics. We found a mass of m = 1375 +/- 40 MeV/c(2) and a width of Gam
ma = 268 +/- 50 MeV/c(2) with a dominat decay into rho pi. The (pi pi)(s)pi
decay of the pi*(1300) is less than 15% of its rho pi decay as expected fo
r a radial excitation of the pi.