Calculation of the distribution of scalar glueball strength - art. no. 068201

Citation
Ls. Celenza et al., Calculation of the distribution of scalar glueball strength - art. no. 068201, PHYS REV C, 6206(6), 2000, pp. 8201
Citations number
8
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW C
ISSN journal
05562813 → ACNP
Volume
6206
Issue
6
Year of publication
2000
Database
ISI
SICI code
0556-2813(200012)6206:6<8201:COTDOS>2.0.ZU;2-P
Abstract
In an earlier work we introduced a covariant model of quarkonium-glueball m ixing and calculated the wave functions of the various mixed scalar-isoscal ar states: f(o)(980), f(o)(1370), f(o)(1500), and f(o)(1770). In the presen t work we introduce the widths of these states and describe glueball mixing with the f(o)(400-1200) resonance using a perturbative scheme. Part of our motivation lies in the recent work of Narison who used QCD sum-rule techni ques to study the distribution of glueball strength among scalar, pseudosca lar, and tensor mesons. We find little change of our previous results with little strength in the energy region below the f(o)(980) resonance. Our res ult is in contrast to the result of the QCD sum-rule analysis that suggests that there is a good deal of glueball strength in the region near or below 1 GeV.