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Title: Measurement of Double-Polarization Asymmetries in the Quasielastic He 3 ( e , e ' d ) Process

Journal Article · · Physical Review Letters

We present a precise measurement of double-polarization asymmetries in the 3He(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 quasi-elastic kinematics at Q2=0.25(GeV/c)2 for missing momenta up to 270MeV/c. The asymmetries are in fair agreement with the state-of-the-art calculations in terms of their functional dependencies on pm and omega, but are systematically offset. Beyond the region of the quasi-elastic 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.

Research Organization:
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Nuclear Physics (NP)
Contributing Organization:
Jefferson Lab Hall A Collaboration
Grant/Contract Number:
AC05-06OR23177; DEC-2013/10/M/ST2/00420
OSTI ID:
1165066
Alternate ID(s):
OSTI ID: 1181372
Report Number(s):
JLAB-PHY-14-1970; DOE/OR/23177-3201; arXiv:1409.2253; PRLTAO; ArticleNumber: 232505
Journal Information:
Physical Review Letters, Vol. 113, Issue 23; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 8 works
Citation information provided by
Web of Science

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