Sea-quark effects in the pion charge form factor
- Helsinki Institute of Physics, POB 64, 00014 University of Helsinki (Finland)
It is shown that the data on the pion charge form factor admit the possibility for a substantial sea-quark component in the pion wave function. If the charge form factor is calculated with instant form kinematics in a constituent quark model that is extended to include explicit (qq){sup 2} components in the pion wave function, that component will give the dominant contribution to the calculated {pi}{sup +} charge form factor at large values of momentum transfer. The present experimental values Q{sup 2} can be described fairly well with (qq){sup 2} component admixtures of up to 50%. The sensitivity of the calculated {pi}{sup +} charge form factor to whether one of the quarks or one of the antiquarks is taken to be in the P state is sma0008.
- OSTI ID:
- 21189936
- Journal Information:
- Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 4 Vol. 77; ISSN 0556-2813; ISSN PRVCAN
- Country of Publication:
- United States
- Language:
- English
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