Endo, I.
GAMMA DEUT --> P N
POL
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FURTHER MEASUREMENT OF PROTON POLARIZATION IN DEUTERON PHOTODISINTEGRATION AT PHOTON ENERGIES BETWEEN 400-MEV AND 650-MEV: POSSIBLE EVIDENCE FOR DIBARYON RESONANCES

Ikeda, H. ; Arai, I. ; Fujii, H. ; et al.
Nucl.Phys.B 172 (1980) 509-533, 1980.
Inspire Record 158986 DOI 10.17182/hepdata.34500

The proton polarization in deuteron photodisintegration has been measured at photon energies between 400 and 650 MeV at c.m. angles between 45° and 135°. To explain the polarization and differential cross-section data consistently, we have introduced dibaryon resonances and performed a partial-wave analysis at photon energies between 350 and 700 MeV. It has been shown that the existence of at least two dibaryon resonances is required in this energy range: one at ∼2380MeV with I ( J P ) = 0(3 + ) or 0(1 + ), and the other at ∼2260 MeV with I ( J P ) = 1(3 − ) or 1(2 − ).

1 data table
Table 1

No description provided.


Angular Dependence of Proton Polarization in $\gamma d \to pn$ and Further Investigation of the Dibaryon Resonance

Ikeda, H. ; Arai, I. ; Fujii, H. ; et al.
UTPN-115, 1978.
Inspire Record 131379 DOI 10.17182/hepdata.20801

None

1 data table
Table 1

ERRORS INCLUDE BY QUADRATIC ADDITION THE 5 PCT UNCERTAINTY IN THE CARBON ANALYSING POWER.


Measurement of the Proton Polarization in Deuteron Photodisintegration at Photon Energies Between 350-MeV and 700-MeV

Kamae, T. ; Arai, I. ; Fujii, T. ; et al.
Nucl.Phys.B 139 (1978) 394-412, 1978.
Inspire Record 135594 DOI 10.17182/hepdata.35048

The proton polarization in the γ d → pn reaction has been measured at a c.m. angle of 90° and photon energies between 350 and 700 MeV, using a carbon polarimeter. The magnitude of the polarization shows a sharp energy dependence with a peak of about −80% at around 500–550 MeV. This feature cannot be explained by conventional models and seems to indicate a new mechanism in the dibaryon system.

1 data table
Table 1

AROUND THETA OF 90 DEG.


Observation of an Anomalous Structure in Proton Polarization from Deuteron Photodisintegration

Kamae, T. ; Arai, I. ; Fujii, T. ; et al.
Phys.Rev.Lett. 38 (1977) 468, 1977.
Inspire Record 110084 DOI 10.17182/hepdata.21021

Proton polarization in γd→pn has been measured at c.m. angle around 90° and photon energies from 325 to 725 MeV. The polarization increases sharply with the photon energy, reaching a high maximum of (-80±8)% around 500-550 MeV. Such a high polarization with a sharp energy dependence seems to indicate a new effect in the dibaryon system.

1 data table
Table 1

No description provided.