Longitudinal and Transverse Cross Sections in the 1H(e,e′K+)Λ Reaction
Longitudinal and Transverse Cross Sections in the 1H(e,e′K+)Λ Reaction
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Date
1998-08-31
Authors
Niculsescu, G.
Mohring, R.M.
Gueye, P.
Abbott, D.
Ahmidouch, A.
Amatuni, Ts.A.
Ambrozewicz, P.
Angelescu, T.
Armstrong, C.S.
Assamagan, K.
Advisor
Citation
Niculsescu, G. et al. "Longitudinal and Transverse Cross Sections in the 1H(e,e′K+)Λ Reaction." Physical Review Letters 81, no. 9 (1998): 1805-1808.
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Abstract
The 1H(e,e′K+)Λ reaction was studied as a function of the squared four-momentum transfer, Q2, and the virtual photon polarization, ɛ. For each of four Q2 settings, 0.52, 0.75, 1.00, and 2.00 (GeV/c)2, the longitudinal and transverse virtual photon cross sections were extracted in measurements at three virtual photon polarizations. The Q2 dependence of the σL/σT ratio differs significantly from current theoretical predictions. This, combined with the precision of the measurement, implies a need for revision of existing calculations.