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http://hdl.handle.net/2445/114893
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DC Field | Value | Language |
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dc.contributor.author | Soto Riera, Joan | - |
dc.contributor.author | Tarrús Castellà, Jaume | - |
dc.date.accessioned | 2017-09-01T10:20:41Z | - |
dc.date.available | 2017-09-01T10:20:41Z | - |
dc.date.issued | 2010 | - |
dc.identifier.issn | 0556-2813 | - |
dc.identifier.uri | http://hdl.handle.net/2445/114893 | - |
dc.description.abstract | We calculate the nucleon-nucleon scattering amplitudes in the 1S0 and 3S1−3D1 channels at next-to-next-to-leading order starting from a recently proposed nonrelativistic chiral effective theory, which includes dibaryon fields as fundamental degrees of freedom. We restrict ourselves to center-of-mass energies (E) smaller than the pion mass (mπ) and further divide the calculation into two relative momentum (p) regions, a high-energy one p~mπ≫δmi, δmi being the dibaryon residual masses, and low-energy one p≲δmi. We first match to a lower energy effective theory in which we calculate the amplitudes in the high-energy region. We further match this effective theory to the so-called pionless effective theory in the low-energy region and carry out the calculations in the latter. Dimensional regularization and minimal subtraction scheme are used throughout. For 1S0 channel a good description of the phase shift data is obtained for E≲50 MeV. For the 3S1−3D1 channel, the 3S1 phase shift data is only well described up to E≲20 MeV. | - |
dc.format.extent | 1 p. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | American Physical Society | - |
dc.relation.isformatof | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevC.81.014005 | - |
dc.relation.ispartof | Physical Review C, 2010, vol. 81, num. 1, p. 014005-1-014005-12 | - |
dc.relation.uri | https://doi.org/10.1103/PhysRevC.81.014005 | - |
dc.rights | (c) American Physical Society, 2010 | - |
dc.source | Articles publicats en revistes (Física Quàntica i Astrofísica) | - |
dc.subject.classification | Teoria de camps (Física) | - |
dc.subject.classification | Reaccions nuclears | - |
dc.subject.classification | Barions | - |
dc.subject.other | Field theory (Physics) | - |
dc.subject.other | Nuclear reactions | - |
dc.subject.other | Baryons | - |
dc.title | Effective field theory with dibaryon fields: Nucleon-nucleon amplitudes at N2LO | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 592788 | - |
dc.date.updated | 2017-09-01T10:20:41Z | - |
dc.relation.projectID | info:eu-repo/grantAgreement/EC/FP7/227431/EU//HADRONPHYSICS2 | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) Publicacions de projectes de recerca finançats per la UE |
Files in This Item:
File | Description | Size | Format | |
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592788.pdf | 866.1 kB | Adobe PDF | View/Open |
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