A measurement of the strange quark content of the proton
Date of Award
Doctor of Philosophy (PhD)
Paul A. Souder
Strange quark, Proton, Parity-violating, Weak neutral current
Atomic, Molecular and Optical Physics | Elementary Particles and Fields and String Theory | Physics
We have measured the parity-violating electroweak asymmetry in the elastic scattering of polarized electrons from the proton. The kinematic point [[left angle bracket][straight theta] lab [right angle bracket] = 0.48( GeV / c ) 2 ] is chosen to provide sensitivity, at a level that is of theoretical interest, to the strange electric form factor [Special characters omitted.] The result, A = -14.5 ± 2.2 ppm, is consistent with the electroweak standard model and no additional contributions from strange quarks. In particular, the measurement implies [Special characters omitted.] + 0.39[Special characters omitted.] = 0.023 ± 0.034(stat) ± 0.026([Special characters omitted.] ), where the last uncertainty arises from the estimated uncertainty in the neutron electric form factor.
Surface provides description only. Full text is available to ProQuest subscribers. Ask your Librarian for assistance.
Kahl, William Edward, "A measurement of the strange quark content of the proton" (2000). Physics - Dissertations. Paper 52.