Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
2005-09-27
PoS LAT2005 (2005) 064
Physics
High Energy Physics
High Energy Physics - Lattice
Talk given at 23rd International Symposium on Lattice Field Theory (LATTICE 2005), Trinity College, Dublin, Ireland, 25-30 Jul
Scientific paper
We perform the comprehensive analysis of the pentaquark (5Q) in J^P=3/2^{\pm} channel using anisotropic quenched lattice QCD. We employ the standard Wilson gauge action at \beta=5.75 and the O(a) improved Wilson (clover) quark action on a 12^3*96 lattice with the renormalized anisotropy as a_s/a_t = 4. A large number of gauge configurations as Nconf=1000 is analyzed, which is found to be essential to achieve a reliable measurement. We study three types of the Rarita-Schwinger intepolationg fields with I=0: (a) the NK*-type, (b) the (color-)twisted NK*-type, (c) a diquark-type. As a result, we find only massive states as m(5Q)= 2.1-2.2 GeV in J^P=3/2^- channel, and m(5Q) = 2.4-2.6 GeV in J^P=3/2^+ channel in the chiral limit. The analysis with the hybrid boundary condition (HBC) is performed to distinguish whether these resonances are compact 5Q resonances or two-particle scattering states. No low-lying compact 5Q resonance states are found below 2.1GeV.
Doi Takumi
Ishii Noriyoshi
Nemoto Yukio
Oka Makoto
Suganuma Hideo
No associations
LandOfFree
Anisotropic lattice QCD study of pentaquark baryons in spin 3/2 channel does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Anisotropic lattice QCD study of pentaquark baryons in spin 3/2 channel, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Anisotropic lattice QCD study of pentaquark baryons in spin 3/2 channel will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-224579