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Proton polarization in deuteron photodisintegration in the Δ(1232)-resonance region

Zybalov, A.A. ; Konovalov, O.G. ; Marekhin, S.V. ; et al.

Nucl.Phys.A 533 (1991) 642-650, 1991.

Inspire Record 1392876 DOI 10.17182/hepdata.36724

We report the results from measurements of proton polarization P , in the γ +D→p+n reaction at photon energies ranging from 200 to 350 MeV. The data obtained are compared with the measured analysing power A , of the reverse reaction and with model calculations. The assumption of the dominant contribution of isobar configurations in this region is on the whole confirmed by the present proton polarization measurements.

5 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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Polarization of protons in the reactions $\gamma^{3,4}$He$\rightarrow\overrightarrow{p}X$ and the quasideuteron model

Zybalov, A.A. ; Karasev, S.P. ; Konovalov, O.G. ; et al.

Sov.J.Nucl.Phys. 47 (1988) 955-956, 1988.

Inspire Record 1392524 DOI 10.17182/hepdata.17410

None

1 data table

Table 1

No description provided.

Cross-section asymmetry in two-particle photodisintegration of helium-3 by linearly polarized protons

Belyaev, A.A. ; Ganenko, V.B. ; Get'man, V.A. ; et al.

Sov.J.Nucl.Phys. 44 (1986) 181-183, 1986.

Inspire Record 1392511 DOI 10.17182/hepdata.17441

None

2 data tables

Table 1

No description provided.

Table 2

No description provided.

Measurement of elastic omega photoproduction at HERA.

The ZEUS collaboration Derrick, M. ; Krakauer, D. ; Magill, S. ; et al.

Z.Phys.C 73 (1996) 73-84, 1996.

Inspire Record 422159 DOI 10.17182/hepdata.44712

The reaction $\gamma p \rightarrow \omega p$ $(\omega \rightarrow \pi~+\pi~-\pi~0$ and $\pi~0\rightarrow\gamma\gamma)$ has been studied in $ep$ interactions using the \mbox{ZEUS} detector at photon-proton centre-of-mass energies between $70$ and $90\uni{GeV}$ and $|t| < 0.6\uni{GeV}~2$, where $t$ is the squared four momentum transferred at the proton vertex. The elastic \ome photoproduction cross section has been measured to be $\sigma_{\gamma p\rightarrow \omega p} = 1.21\pm 0.12\pm 0.23 \mu\mbox{b}$. The differential cross section $d\sigma_{\gamma p\rightarrow \omega p} /d|t|$ has an exponential shape $\mbox{e}~{-b |t|}$ with a slope $b = 10.0\pm 1.2\pm 1.3\uni{GeV}~{-2}$. The angular distributions of the decay pions are consistent with {\it s}-channel helicity conservation. When compared to low energy data, the features of $\omega$ photoproduction as measured at HERA energies are in agreement with those of a soft diffractive process. Previous measurements of the $\rho~0$ and $\phi$ photoproduction cross sections at HERA show a similar behaviour.

4 data tables

Table 1

Total Elastic Cross Section.

Table 2

No description provided.

Table 3

SLOPE OF DSIG/DT distribution.

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