Recoil polarization for [delta] excitation in pion electroproduction

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dc.creator Sarty, Adam James, 1965-
dc.creator Kelly, J. J.
dc.creator Roche, R. E.
dc.creator Chai, Z.
dc.creator Jones, M. K.
dc.creator Gayou, O.
dc.creator Frullani, S.
dc.creator Aniol, K.
dc.creator Beise, E. J.
dc.creator Benmokhtar, F.
dc.date.accessioned 2015-04-14T14:22:12Z
dc.date.available 2015-04-14T14:22:12Z
dc.date.issued 2005-09
dc.identifier.issn 0031-9007
dc.identifier.uri http://library2.smu.ca/xmlui/handle/01/26043
dc.description Publisher's version/PDF en_CA
dc.description.abstract We measured angular distributions of recoil-polarization response functions for neutral pion electroproduction for W = 1.23 GeV at Q[superscript 2] = 1.0 (GeV/c)[superscript 2], obtaining 14 separated response functions plus 2 Rosenbluth combinations; of these, 12 have been observed for the first time. Dynamical models do not describe quantities governed by imaginary parts of interference products well, indicating the need for adjusting magnitudes and phases for nonresonant amplitudes. We performed a nearly model-independent multipole analysis and obtained values for Re (S[subscript 1+]/M[subscript 1+]) = -(6.84 [plus or minus] 0.15)% and Re (E[subscript 1+]/M[subscript 1+]) = -(2.91 [plus or minus] 0.19)% that are distinctly different from those from the traditional Legendre analysis based upon M[subscript 1+] dominance and l[subscript pi] [less than or equal to] 1 truncation. en_CA
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dc.language.iso en en_CA
dc.publisher American Physical Society en_CA
dc.relation.uri http://dx.doi.org/10.1103/PhysRevLett.95.102001
dc.rights Article is made available in accordance with the publisher’s policy and is subject to copyright law. Please refer to the publisher’s site. Any re-use of this article is to be in accordance with the publisher’s copyright policy. This posting is in no way granting any permission for re-use to the reader/user.
dc.subject.lcsh Pion production
dc.subject.lcsh Polarization (Nuclear physics)
dc.title Recoil polarization for [delta] excitation in pion electroproduction en_CA
dc.type Text en_CA
dcterms.bibliographicCitation Physical Review Letters 95(10), 102001. (2005) en_CA
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Article is made available in accordance with the publisher’s policy and is subject to copyright law. Please refer to the publisher’s site. Any re-use of this article is to be in accordance with the publisher’s copyright policy. This posting is in no way granting any permission for re-use to the reader/user.
 
Published Version: http://dx.doi.org/10.1103/PhysRevLett.95.102001
 
 

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