Imaging Dynamical Chiral-Symmetry Breaking: Pion Wave Function on the Light Front
Imaging Dynamical Chiral-Symmetry Breaking: Pion Wave Function on the Light Front
We project onto the light front the pion’s Poincaré-covariant Bethe-Salpeter wave function obtained using two different approximations to the kernels of quantum chromodynamics’ Dyson-Schwinger equations. At an hadronic scale, both computed results are concave and significantly broader than the asymp...
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Personal Name(s): | Chang, Lei |
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Cloët, I. C. / Cobos-Martinez, J. J. / Roberts, C. D. / Schmidt, S. M. / Tandy, P. C. | |
Contributing Institute: |
Theorie der starken Wechselwirkung; IKP-3 Wissenschaftlicher Geschäftsbereich I; VS-I Theorie der Starken Wechselwirkung; IAS-4 |
Published in: | Physical review letters, 110 (2013) 13, S. 132001 |
Imprint: |
College Park, Md.
APS
2013
|
PubMed ID: |
23581311 |
DOI: |
10.1103/PhysRevLett.110.132001 |
Document Type: |
Journal Article |
Research Program: |
Computational Science and Mathematical Methods Hadron Structure and Dynamics (HSD) |
Link: |
OpenAccess OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.1103/PhysRevLett.110.132001 in citations.
We project onto the light front the pion’s Poincaré-covariant Bethe-Salpeter wave function obtained using two different approximations to the kernels of quantum chromodynamics’ Dyson-Schwinger equations. At an hadronic scale, both computed results are concave and significantly broader than the asymptotic distribution amplitude, φasyπ(x)=6x(1−x); e.g., the integral of φπ(x)/φasyπ(x) is 1.8 using the simplest kernel and 1.5 with the more sophisticated kernel. Independent of the kernels, the emergent phenomenon of dynamical chiral-symmetry breaking is responsible for hardening the amplitude. |