Observation of isovector-isoscalar two-body currents in deuteron knockout from {sup 3}He

Journal Article · Thu Feb 01 04:00:00 EST 1996 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.76.885· OSTI ID:278807

Tripp, C; Adams, G S; Beck, D; Dow, K; Finn, J M; Frolov, V; Hansen, O; Kobayashi, T; McIntyre, J; Lourie, R; Nozar, M; Nagorny, S; Shaw, J; Stoler, P; Tamae, T; Tieger, D; Turchinetz, W; Warren, G; Welch, T P; Winhold, E J ; Witkowski, M; Wojtsekhowski, B ^[1]

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1. Physics Department, Rensselaer Polytechnic Institute, Troy, New York 12180 (United States)

The reaction {sup 3}He({ital e},{ital e}{prime}{ital d}){ital p} was measured at four-momentum transfer {ital q}=420 MeV, for proton recoil momentum {ital P}{sub {ital r}}=22, 54, and 62 MeV/{ital c}, in parallel deuteron kinematics. Longitudinal ({ital L}) and transverse ({ital T}) response functions were obtained by means of Rosenbluth separations. The separated response functions are, respectively, found to be dominated by the contributions of isoscalar and isovector two-body currents. The {ital L}/{ital T} ratios are about 3.5. This is an order of magnitude lower than that for elastic scattering on a free deuteron, or what would be expected for a purely isoscalar transition, but approximately agrees with what is theoretically expected for isoscalar plus isovector contributions. {copyright} {ital 1996 The American Physical Society.}

• DOE Contract Number: FG05-90ER40570
• OSTI ID: 278807
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 6 Vol. 76; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
DEUTERONS
ELASTIC SCATTERING
ELECTRON REACTIONS
HELIUM 3 TARGET
ISOVECTORS
KNOCK-OUT REACTIONS
MOMENTUM TRANSFER
PROTONS
RESPONSE FUNCTIONS