Show simple item record

dc.contributor.authorBeane, S. R.
dc.contributor.authorChang, E.
dc.contributor.authorCohen, S. D.
dc.contributor.authorJunnarkar, P.
dc.contributor.authorLin, H.-W.
dc.contributor.authorLuu, T. C.
dc.contributor.authorOrginos, Kostas
dc.contributor.authorParreno, A.
dc.contributor.authorSavage, M. J.
dc.contributor.authorWalker-Loud, A.
dc.contributor.authorDetmold, William
dc.date.accessioned2013-10-15T12:31:08Z
dc.date.available2013-10-15T12:31:08Z
dc.date.issued2013-08
dc.date.submitted2013-06
dc.identifier.issn0556-2813
dc.identifier.issn1089-490X
dc.identifier.urihttp://hdl.handle.net/1721.1/81373
dc.description.abstractThe scattering lengths and effective ranges that describe low-energy nucleon-nucleon scattering are calculated in the limit of SU(3)-flavor symmetry at the physical strange-quark mass with lattice quantum chromodynamics. The calculations are performed with an isotropic clover discretization of the quark action in three volumes with spatial extents of L∼3.4 fm, 4.5 fm, and 6.7 fm, and with a lattice spacing of b∼0.145 fm. With determinations of the energies of the two-nucleon systems (both of which contain bound states at these up and down quark masses) at rest and moving in the lattice volume, Lüscher's method is used to determine the low-energy phase shifts in each channel, from which the scattering length and effective range are obtained. The scattering parameters, in the [superscript 1]S[subscript 0] channel are found to be m[subscript π]a([superscript 1]S[subscript 0])=9.50[+0.78 over −0.69][+1.10 over −0.80] and m[subscript π]r([superscript 1]S[subscript 0])=4.61[+0.29 over−0.31][+0.24 over −0.26], and in the [superscript 3]S[subscript 1] channel are m[subscript π]a([superscript 3]S[subscript 1])=7.45+0.57 over −0.53][+0.71 over −0.49] and m[subscript π]r([superscript 3]S[subscript 1])=3.71[+0.28 over −0.31+0.28][+0.28 over −0.35]. These values are consistent with the two-nucleon system exhibiting Wigner's supermultiplet symmetry, which becomes exact in the limit of large N[subscript c]. In both spin channels, the phase shifts change sign at higher momentum, near the start of the t-channel cut, indicating that the nuclear interactions have a repulsive core even at the SU(3)-symmetric point.en_US
dc.description.sponsorshipUnited States. Dept. of Energy (Cooperative Research Agreement DE-FG02-94ER40818)en_US
dc.description.sponsorshipUnited States. Dept. of Energy. Outstanding Junior Investigator Program (DE-SC000-1784)en_US
dc.language.isoen_US
dc.publisherAmerican Physical Societyen_US
dc.relation.isversionofhttp://dx.doi.org/10.1103/PhysRevC.88.024003en_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.sourceAmerican Physical Societyen_US
dc.titleNucleon-nucleon scattering parameters in the limit of SU(3) flavor symmetryen_US
dc.typeArticleen_US
dc.identifier.citationBeane, S. R., E. Chang, S. D. Cohen, W. Detmold, P. Junnarkar, H. W. Lin, T. C. Luu, et al. “Nucleon-nucleon scattering parameters in the limit of SU(3) flavor symmetry.” Physical Review C 88, no. 2 (August 2013). © 2013 American Physical Societyen_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Physicsen_US
dc.contributor.mitauthorDetmold, Williamen_US
dc.relation.journalPhysical Review Cen_US
dc.eprint.versionFinal published versionen_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dspace.orderedauthorsBeane, S. R.; Chang, E.; Cohen, S. D.; Detmold, W.; Junnarkar, P.; Lin, H. W.; Luu, T. C.; Orginos, K.; Parreño, A.; Savage, M. J.; Walker-Loud, A.en_US
dc.identifier.orcidhttps://orcid.org/0000-0002-0400-8363
mit.licensePUBLISHER_POLICYen_US


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record