24 citations · 90 across the 12 of their papers we have counts for
17 papers · 1 filter
Exotic Quark Structure of Lambda(1405) in QCD Sum Rule
T. Nakamura, J. Sugiyama, N. Ishii +2
A new analysis is performed in QCD sum rule for the lightest negative parity baryon Lambda (1405). Mixings of three-quark and five-quark Fock components are taken into account. Ter…
Determination of f_0(980) Structure by Fragmentation Functions
M. Hirai, S. Kumano, M. Oka +1
We discuss internal structure of an exotic hadron by using fragmentation functions. The fragmentation functions for the f_0(980) meson are obtained by a global analysis of e^++e^-…
Global analysis of hadron-production data in e^+ e^- annihilation for determining fragmentation functions
M. Hirai, S. Kumano, T. -H. Nagai +2
Fragmentation functions of pion, kaon, and nucleon are determined by global analyses of hadron-production data in annihilation. It is particularly important that uncertain…
Proposal for exotic-hadron search by fragmentation functions
M. Hirai, S. Kumano, M. Oka +1
It is proposed that fragmentation functions should be used to identify exotic hadrons. As an example, fragmentation functions of the scalar meson f_0(980) are investigated. It is p…
Meson-baryon sigma terms in QCD Sum Rules
G. Erkol, M. Oka
We evaluate the pion-nucleon and the pion-Delta sigma terms by employing the method of quantum chromodynamics (QCD) sum rules. The obtained value of the pion-nucleon sigma term is…
Triquark structure and isospin symmetry breaking in exotic Ds mesons
S. Yasui, M. Oka
The color anti-triplet triquark is considered as a compact component in the tetraquark structure of exotic mesons. We discuss the mass…