This title appears in the Scientific Report :
2006
Please use the identifier:
http://dx.doi.org/10.1016/j.physletb.2005.12.053 in citations.
Please use the identifier: http://hdl.handle.net/2128/10610 in citations.
Novel evaluation of the two-pion contribution to the nucleon isovector form factors
Novel evaluation of the two-pion contribution to the nucleon isovector form factors
We calculate the two-pion continuum contribution to the nucleon isovector spectral functions drawing upon the new high statistics measurements of the pion form factor by the CMD-2, KLOE, and SND Collaborations. The general structure of the spectral functions remains unchanged, but the magnitude incr...
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Personal Name(s): | Belushkin, M. A. |
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Hammer, H. W. / Meissner, U.G. | |
Contributing Institute: |
Institut 3 (Theoretische Kernphysik); IKP-TH Jülich-Aachen Research Alliance - Simulation Sciences; JARA-SIM |
Published in: | Physics letters / B, 633 (2006) S. 507 - 511 |
Imprint: |
Amsterdam
North-Holland Publ.
2006
|
Physical Description: |
507 - 511 |
DOI: |
10.1016/j.physletb.2005.12.053 |
Document Type: |
Journal Article |
Research Program: |
Physik der Hadronen und Kerne |
Series Title: |
Physics Letters B
633 |
Subject (ZB): | |
Link: |
Get full text OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/10610 in citations.
We calculate the two-pion continuum contribution to the nucleon isovector spectral functions drawing upon the new high statistics measurements of the pion form factor by the CMD-2, KLOE, and SND Collaborations. The general structure of the spectral functions remains unchanged, but the magnitude increases by about 10%. Using the updated spectral functions, we calculate the contribution of the two-pion continuum to the nucleon isovector form factors and radii. We compare the isovector radii with simple p-pole models and illustrate their strong underestimation in such approaches. Moreover, we give a convenient parametrization of the result for use in future form factor analyses. (c) 2005 Elsevier B.V. All rights reserved. |