This title appears in the Scientific Report :
2001
Please use the identifier:
http://hdl.handle.net/2128/2282 in citations.
Please use the identifier: http://dx.doi.org/10.1103/PhysRevD.63.114009 in citations.
Pion and kaon vector form factors
Pion and kaon vector form factors
We develop a unitarity approach to consider the final state interaction corrections to the tree level graphs calculated from chiral perturbation theory (chi PT) allowing the inclusion of explicit resonance fields. The method is discussed considering the coupled channel pion and kaon Vector form fact...
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Personal Name(s): | Oller, J. |
---|---|
Ossipenko, E. / Palomar, J. E. | |
Contributing Institute: |
Institut 3 (Theoretische Kernphysik); IKP-3 |
Published in: | Physical Review D Physical review / D, 63 63 (2001 2001) 11 11, S. 114009 114009 |
Imprint: |
[S.l.]
Soc.
2001
2001-04-23 2001-04-01 |
Physical Description: |
114009 |
DOI: |
10.1103/PhysRevD.63.114009 |
Document Type: |
Journal Article |
Research Program: |
Theoretische Kernphysik |
Series Title: |
Physical Review D
63 |
Subject (ZB): | |
Link: |
OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.1103/PhysRevD.63.114009 in citations.
We develop a unitarity approach to consider the final state interaction corrections to the tree level graphs calculated from chiral perturbation theory (chi PT) allowing the inclusion of explicit resonance fields. The method is discussed considering the coupled channel pion and kaon Vector form factors. These form factors are then matched with the one loop chi PT results. A very good description of experimental data is accomplished for the vector form factors up to roots less than or equal to1.2 GeV beyond which multiparticle slates play a non-negligible role. For the P-prave pi pi phase shifts the agreement with data stands even higher up to roots less than or equal to1.5 GeV. We also consider the isospin breaking effects due to the omega-rho mixing as a perturbation to the previous results. In addition the low and resonance energy regions are discussed in detail and for the former a comparison with one and two loop chi PT is made showing a remarkable coincidence with the two loop chi PT results. |