Document Type

Article

Publication Date

2014

DOI

10.1103/PhysRevLett.113.232505

Publication Title

Physical Review Letters

Volume

113

Issue

23

Pages

232505 (1-6)

Abstract

We present a precise measurement of double-polarization asymmetries in the ³→He (→e, e' d) reaction. This particular process is a uniquely sensitive probe of hadron dynamics in 3He and the structure of the underlying electromagnetic currents. The measurements have been performed in and around quasielastic kinematics at Q2 = 0.25(GeV/c)2 for missing momenta up to 270 MeV/c. The asymmetries are in fair agreement with the state-of-the-art calculations in terms of their functional dependencies on pm and ω, but are systematically offset. Beyond the region of the quasielastic peak, the discrepancies become even more pronounced. Thus, our measurements have been able to reveal deficiencies in the most sophisticated calculations of the three-body nuclear system, and indicate that further refinement in the treatment of their two-and/or three-body dynamics is required.

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Original Publication Citation

Mihovilovic, M., Jin, G., Long, E., Zhang, Y. W., Allada, K., Anderson, B., . . . Jefferson Lab Hall, A. C. (2014). Measurement of double-polarization asymmetries in the quasielastic ³→He (→e, e' d) process. Physical Review Letters, 113(23), 232505 doi:10.1103/PhysRevLett.113.232505

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