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Jaseer Ahmed on Muck Rack

Jaseer Ahmed

As seen in: Physical Review B
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Articles

Normal single-spin asymmetries in electron-proton scattering: Two-photon exchange with intermediate-state resonances

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By W. Melnitchouk, Jefferson Lab, Jaseer Ahmed, P. G. Blunden
| Physical Review B
We calculate the beam (Bn) and target (An) normal single-spin asymmetries in electron–proton elastic scattering from two-photon exchange amplitudes with resonance intermediate states of spin-parity 1/2± and 3/2± and mass W≲1.8 GeV. The latest CLAS exclusive meson electroproduction data are used as input for the transition amplitudes from the proton to the excited resonance states. For Bn, the spin 3/2 resonances dominate by an order of magnitude over the spin 1/2 states.
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