Based on a 3×3 mass matrix describing the mixing of the scalar states f0(1370), f0(1500) and f0(1710), the hadronic decays of the three states are investigated. Taking into account the two possible assumptions concerning the mass level order of the bare states |N〉 = |uū + dd̄〉/ √ 2, |S〉 = |ss̄〉 and |G〉 = |gg〉 in the scalar sector, MG > MS > MN and MG > MN > MS , the glueball-quarkonia content of ...

An ant colony optimization approach for the preference-based shortest path search Seung-Ho Ok, Woo-Jin Seo, Jin-Ho Ahn, Sungho Kang and Byungin Moon* School of Electrical Engineering and Computer Science, Kyungpook National University, 1370 Sankyuk-dong, Buk-gu, Daegu 702-701, Korea; Department of Electronic Engineering, Hoseo University, 165 Sechul-ri, Baebang-myun, Asan, Chungnam 336-795, Kor...

The phytoplankton in warm oligotrophic regions of the open oceans is dominated by ,2-mm cells too small for efficient direct consumption by mesozooplankton. However, these primary producers are hypothetically linked to higher trophic levels via the cascading impacts of mesozooplankton grazing on intermediate consumers. To assess the magnitudes of these indirect trophic linkages, grazing experim...

The assignments of the isoscalar scalar mesons f0(980), f0(1370), and f0(1500) in terms of their q̄q substructure is still a matter of heated dispute. Here we employ the weak and electromagnetic decays D+ s → f0π and f0 → γγ, respectively, to identify the f0(980) and f0(1500) as mostly s̄s, and the f0(1370) as dominantly n̄n, in agreement with previous work. The two-photon decays can be satisfacto...