Non-interacting KN contribution in the QCD sum rule for the pentaquark Theta^+(1540)
| dc.creator | Kwon, Youngshin | |
| dc.creator | Hosaka, Atsushi | |
| dc.creator | Lee, Su Houng | |
| dc.date | 2005-05-06 | |
| dc.date.accessioned | 2026-07-07T03:54:43Z | |
| dc.date.available | 2026-07-07T03:54:43Z | |
| dc.description | We perform a QCD sum rule analysis for the pentaquark baryon Theta^+ with the non-interacting $KN$ contribution treated carefully. The coupling of the Theta^+ current to the $KN$ state is evaluated by applying the soft kaon theorem and vacuum saturation. When using a five-quark current including scalar and pseudo-scalar diquarks, the KN contribution turns out not to be very important and the previous result of the negative parity Theta^+ is reproduced again. The Borel analysis of the correlation function for Theta^+ with the KN continuum states subtracted yields the mass of the J^P= 1/2^- Theta^+ around 1.5 GeV. | |
| dc.description | 7 pages, 5 figures, Talk given at Quark Nuclear Physics 2005 at Pyongchang, Korea, February 22-24, 2005 | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0505040 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0505040 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/44351 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Non-interacting KN contribution in the QCD sum rule for the pentaquark Theta^+(1540) | |
| dc.type | text |