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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…
Pseudoscalar-meson--octet-baryon coupling constants in two-flavor lattice QCD
G. Erkol, M. Oka, T. T. Takahashi
We evaluate the , , , and coupling constants and the corresponding monopole masses in lattice QCD with two flavors of dynamical quarks. The parameters…
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^-…
Suppression pattern of neutral pions at high transverse momentum in Au+Au collisions at sqrt(s_NN) = 200 GeV and constraints on medium transport coefficients
PHENIX Collaboration, A. Adare
For Au + Au collisions at 200 GeV we measure neutral pion production with good statistics for transverse momentum, p_T, up to 20 GeV/c. A fivefold suppression is found, which is es…
Finite-width effects on Delta baryons in QCD Sum Rules
G. Erkol, M. Oka
The quantum chromodynamics (QCD) sum rules for the Delta baryons are analyzed by taking into account the finite-width effects, through explicit utilization of the Breit-Wigner shap…
J/psi Production in sqrt (s_NN)= 200 GeV Cu+Cu Collisions
PHENIX Collaboration, A. Adare
Yields for J/psi production in Cu+Cu collisions at sqrt (s_NN)= 200 GeV have been measured by the PHENIX experiment over the rapidity range |y| < 2.2 at transverse momenta from 0 t…