Source:http://linkedlifedata.com/resource/pubmed/id/15698166
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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
2
|
| pubmed:dateCreated |
2005-2-8
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| pubmed:abstractText |
We report new precise H(e,e(')p)pi(0) measurements at the Delta(1232) resonance at Q(2)=0.127 (GeV/c)(2) obtained at the MIT-Bates out-of-plane scattering facility which are particularly sensitive to the transverse electric amplitude (E2) of the gamma(*)N-->Delta transition. The new data have been analyzed together with those of earlier measurements to yield precise quadrupole to dipole amplitude ratios: Re(E(3/2)(1+)/M(3/2)(1+))=(-2.3+/-0.3(stat+syst)+/-0.6(model))% and Re(S(3/2)(1+)/M(3/2)(1+))=(-6.1+/-0.2(stat+syst)+/-0.5(model))% for M(3/2)(1+)=(41.4+/-0.3(stat+syst)+/-0.4(model))(10(-3)/m(pi(+))). The derived amplitudes give credence to the conjecture of deformation in hadrons favoring, at low Q2, the dominance of mesonic effects.
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| pubmed:language |
eng
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| pubmed:journal | |
| pubmed:status |
PubMed-not-MEDLINE
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| pubmed:month |
Jan
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| pubmed:issn |
0031-9007
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| pubmed:author |
pubmed-author:AlarconRR,
pubmed-author:BernsteinA MAM,
pubmed-author:BertozziWW,
pubmed-author:BottsPP,
pubmed-author:BourgeoisPP,
pubmed-author:CalarcoJJ,
pubmed-author:CasagrandeFF,
pubmed-author:DistlerM OMO,
pubmed-author:DouMM,
pubmed-author:FarkondehMM,
pubmed-author:GeorgakopoulosSS,
pubmed-author:GiladSS,
pubmed-author:HicksRR,
pubmed-author:HoltropMM,
pubmed-author:HottaAA,
pubmed-author:JiangXX,
pubmed-author:KarabarbounisAA,
pubmed-author:KirkpatrickJJ,
pubmed-author:KowalskiSS,
pubmed-author:MilnerRR,
pubmed-author:MiskimenRR,
pubmed-author:NakagawaII,
pubmed-author:PapanicolasC NCN,
pubmed-author:SartyA JAJ,
pubmed-author:SatoYY,
pubmed-author:ShawJJ,
pubmed-author:SircaSS,
pubmed-author:SixEE,
pubmed-author:SparverisN FNF,
pubmed-author:StaráSS,
pubmed-author:TamaeTT,
pubmed-author:TayanaG FGF,
pubmed-author:TschalaerCC,
pubmed-author:TsentalovichGG,
pubmed-author:TurchinetzWW,
pubmed-author:ZhouZ-LZL,
pubmed-author:ZwartTT
|
| pubmed:issnType |
Print
|
| pubmed:day |
21
|
| pubmed:volume |
94
|
| pubmed:owner |
NLM
|
| pubmed:authorsComplete |
Y
|
| pubmed:pagination |
022003
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| pubmed:year |
2005
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| pubmed:articleTitle |
Investigation of the conjectured nucleon deformation at low momentum transfer.
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| pubmed:affiliation |
Institute of Accelerating Systems and Applications and Department of Physics, University of Athens, Athens, Greece.
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| pubmed:publicationType |
Journal Article
|