Please use this identifier to cite or link to this item:
https://ah.lib.nccu.edu.tw/handle/140.119/77985| DC Field | Value | Language |
|---|---|---|
| dc.contributor | 應物所 | |
| dc.creator | Hsieh, Ron-Chou;Li, Hsiang-nan | |
| dc.creator | 李湘楠 | zh_TW |
| dc.date | 2011-04 | |
| dc.date.accessioned | 2015-08-24T07:55:41Z | - |
| dc.date.available | 2015-08-24T07:55:41Z | - |
| dc.date.issued | 2015-08-24T07:55:41Z | - |
| dc.identifier.uri | http://nccur.lib.nccu.edu.tw/handle/140.119/77985 | - |
| dc.description.abstract | We include effects of nonlocal quark condensates into QCD sum rules (QSR) via the Källén–Lehmann representation for a dressed fermion propagator, in which a negative spectral density function manifests their nonperturbative nature. Applying our formalism to the pion form factor as an example, QSR results are in good agreement with data for momentum transfer squared up to Q2≈10 GeV2Q2≈10 GeV2. It is observed that the nonlocal quark condensate contribution descends like 1/Q21/Q2, different from the exponential decrease in Q2Q2 obtained in the literature, and contrary to the linear rise in the local-condensate approximation. | |
| dc.format.extent | 533339 bytes | - |
| dc.format.mimetype | application/pdf | - |
| dc.relation | Physics Letters B, 698(2), 140-145 | |
| dc.subject | QCD sum rules;Nonlocal condensate;Dressed propagator | |
| dc.title | Nonlocal condensate model for QCD sum rules | |
| dc.type | article | en |
| dc.identifier.doi | 10.1016/j.physletb.2011.02.056 | |
| dc.doi.uri | http://dx.doi.org/10.1016/j.physletb.2011.02.056 | |
| item.fulltext | With Fulltext | - |
| item.openairetype | article | - |
| item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
| item.grantfulltext | restricted | - |
| item.cerifentitytype | Publications | - |
| Appears in Collections: | 期刊論文 | |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 140-145.pdf | 520.84 kB | Adobe PDF2 | View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.