Anisotropic lattice QCD study of pentaquark baryons in spin 3/2 channel

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dc.creatorDoi, Takumi
dc.creatorIshii, Noriyoshi
dc.creatorNemoto, Yukio
dc.creatorOka, Makoto
dc.creatorSuganuma, Hideo
dc.date2005-09-27
dc.date.accessioned2026-07-07T13:08:02Z
dc.date.available2026-07-07T13:08:02Z
dc.descriptionWe 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 β=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.
dc.descriptionTalk given at 23rd International Symposium on Lattice Field Theory (LATTICE 2005), Trinity College, Dublin, Ireland, 25-30 July 2005 (Hadron spectrum and quark masses)
dc.identifierhttps://arxiv.org/abs/hep-lat/0509145
dc.identifierhttp://arxiv.org/abs/hep-lat/0509145
dc.identifierPoS LAT2005 (2005) 064
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/228292
dc.subjectHigh Energy Physics - Lattice
dc.titleAnisotropic lattice QCD study of pentaquark baryons in spin 3/2 channel
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