Direct observation of a three-body mechanism in the reaction He-3 (gamma, pp) n

Audit, G.; Bricault, P.; D'Hose, Nicole; Goutte, D.; Laget, Jean-Marc; Martino, J.; Pham, X-H.; Clayton, W.; Adams, Gary Steven; Ghedira, L.

doi:10.1103/PhysRevC.44.R575

Direct observation of a three-body mechanism in the reaction He-3 (gamma, pp) n

G. Audit
(
- SPhN, DAPNIA, Saclay
)
,
P. Bricault
(
- SPhN, DAPNIA, Saclay
)
,
Nicole D'Hose
(
- SPhN, DAPNIA, Saclay
)
,
D. Goutte
(
- SPhN, DAPNIA, Saclay
)
,
Jean-Marc Laget
(
- SPhN, DAPNIA, Saclay
)

Aug, 1991

Published in:

Phys.Rev.C 44 (1991) R575-R577

DOI:

10.1103/PhysRevC.44.R575

View in:

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Abstract: (APS)

The reaction3 He(γ,pp)n was measured in a kinematic region which isolates the three-body absorption mechanism corresponding to the production of a pion on one nucleon, and its subsequent reabsorption on the remaining two-nucleon pair. Differential cross sections were obtained as a function of neutron recoil momentum Pn at fixed neutron recoil angle θn=45°, and as a function of θn for fixed Pn=300 MeV/c. The results are quite consistent with expectations of multiple scattering calculations. Final-state interactions between outgoing nucleons plays an important role, and are predicted to be minimized in out-of-plane kinematics.

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25.20.Dc
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References(13)

Figures(0)

Pion Absorption on $^{3}$ He at $T (\pi$ ) = 62.5-{MeV} and 82.8-{MeV}

K.A. Aniol
(
- British Columbia U.
)
,
A. Altman
(
- British Columbia U.
)
,
R.R. Johnson
(
- British Columbia U.
)
,
H.W. Roser
(
- British Columbia U.
)
,
R. Tacik
(
- British Columbia U.
)

et al.

- Phys.Rev.C 33 (1986) 1714-1726,
- Phys. Rev. C33 ( 1986) 1714-1726 and Vancouver Triumf - TRI-PP-85-099 (85,REC.MAR.86) 40p
•
DOI:
- 10.1103/PhysRevC.33.1714

EVIDENCE FOR A DIRECT THREE NUCLEON PION ABSORPTION PROCESS

et al.

- Phys.Rev.Lett. 55 (1985) 2782-2785,
- Phys. Rev. Lett. 55 ( 1985) 2782-2785
•
DOI:
- 10.1103/PhysRevLett.55.2782

New Pion Absorption Modes Observed From Triple Coincidences in $^{4}$ He

et al.

- Phys.Rev.Lett. 61 (1988) 923
•
DOI:
- 10.1103/PhysRevLett.61.923

Reaction $^{3}$ He ( $\pi^+$ , $P P$ ) $P$ at $T (\pi$ ) = 350-{MeV} and 500-{MeV}

et al.

- Phys.Rev.C 40 (1989) 1347-1362
•
DOI:
- 10.1103/PhysRevC.40.1347

Multi - Nucleon Pion Absorption in the $^{4}$ He ( $\pi^+$ , $p p p$ ) $n$ Reaction

P. Weber
(
- British Columbia U.
)
,
J. McAlister
(
- British Columbia U.
)
,
R. Olszewski
(
- British Columbia U.
)
,
A. Feltham
(
- British Columbia U.
)
,
M. Hanna
(
- British Columbia U.
)

et al.

- Phys.Lett.B 230 (1989) 31,
- Phys.Lett.B 233 (1989) 281
•
DOI:
- 10.1016/0370-2693(89)91648-1

First Measurement of the Reaction $^{3}$ He ( $\gamma$ , $P P$ ) $N$

et al.

- Phys.Lett.B 227 (1989) 331-335
•
DOI:
- 10.1016/0370-2693(89)90939-8

Two Nucleon Photon Absorption on $^{3}$ He in the $\Delta(1232)$ Region

et al.

- Phys.Rev.Lett. 63 (1989) 856
•
DOI:
- 10.1103/PhysRevLett.63.856

Three-body Exchange Currents. 1. The $^{3}$ He ( $\gamma$ , 2p) $n$ Reaction

J.M. Laget
(
- Saclay
)

- J.Phys.G 14 (1988) 1445-1451,
- J. PHYS. G14 (1988) 1445-1451 AND SACLAY CEN - D.PH.N-SACLAY NO. 2454 (87,REC.AUG.) 14p
•
DOI:
- 10.1088/0305-4616/14/12/006

Nucleons in Nuclei. 2.

J.M. Laget
(
- Saclay
)

- Nucl.Phys.A 497 (1989) 391C-412C,
- Seillac Hadron Workshop 1988:391,
- NUCL. PHYS. A497 (1989) 391C-412C. AND SACLAY CEN - D.PH.N-SACLAY NO. 2536 (88,REC.DEC.) 21p
•
DOI:
- 10.1016/0375-9474(89)90482-X

High Proton Momenta and Short Range Nucleon-nucleon Correlations in a $^{3}$ He ( $e$ , $e^\prime p$ ) Experiment

et al.

- Phys.Rev.Lett. 60 (1988) 1703,
- Phys.Rev.Lett. 60 (1988) 2704 (erratum)
•
DOI:
- 10.1103/PhysRevLett.60.1703

Pion Photoproduction on Few Body Systems

J.M. Laget
(
- Saclay
)

- Phys.Rept. 69 (1981) 1-84,
- Phys. Rep. 69 ( 1981) 1-84
•
DOI:
- 10.1016/0370-1573(81)90164-2

- Nucl.Phys.A 244 383

What Is the Mechanism for Three Nucleon Absorption of Pions in $^{3}$ He?

et al.

- Phys.Lett.B 222 (1989) 7-11
•
DOI:
- 10.1016/0370-2693(89)90714-4