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Elastic Photoproduction of omega Mesons from Hydrogen, Deuterium, and Complex Nuclei

Abramson, J. ; Andrews, D.E. ; Harvey, John R. ; et al.
Phys.Rev.Lett. 36 (1976) 1428, 1976.
Inspire Record 108496 DOI 10.17182/hepdata.21101
6 data tables

No description provided.

FORWARD CROSS SECTION IS 366 +- 49 MUB/GEV**2 AND SLOPE IS 47.1 +- 8.0 GEV**-2.

FORWARD CROSS SECTION IS 9.56 +- 1.24 MB/GEV**2 AND SLOPE IS 160 +- 23 GEV**-2.

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Measurements of Exclusive Photoproduction Processes at Large Values of t and u from 4-GeV to 7.5-GeV

Anderson, Robert L. ; Gustavson, D. ; Ritson, D. ; et al.
Phys.Rev. D14 (1976) 679, 1976.
Inspire Record 108061 DOI 10.17182/hepdata.4592
18 data tables

No description provided.

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Differential cross sections and spin density matrix elements for the reaction gamma p ---> p omega

The CLAS collaboration Williams, M. ; Applegate, D. ; Bellis, M. ; et al.
Phys.Rev. C80 (2009) 065208, 2009.
Inspire Record 829180 DOI 10.17182/hepdata.52667

High-statistics differential cross sections and spin density matrix elements for the reaction $\gamma p \to p \omega$ have been measured using the CLAS at Jefferson Lab for center-of-mass (CM) energies from threshold up to 2.84 GeV. Results are reported in 112 10-MeV wide CM energy bins, each subdivided into $\cos{\theta_{CM}^{\omega}}$ bins of width 0.1. These are the most precise and extensive $\omega$ photoproduction measurements to date. A number of prominent structures are clearly present in the data. Many of these have not previously been observed due to limited statistics in earlier measurements.

221 data tables

Differential cross section for the W range 1.72 to 1.73 GeV.

Differential cross section for the W range 1.73 to 1.74 GeV.

Differential cross section for the W range 1.74 to 1.75 GeV.

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Photoproduction of the omega meson on the proton at large momentum transfer

The CLAS collaboration Battaglieri, M. ; Brunoldi, M. ; De Vita, R. ; et al.
Phys.Rev.Lett. 90 (2003) 022002, 2003.
Inspire Record 599053 DOI 10.17182/hepdata.19351

The differential cross section, $d\sigma/dt$ for $\omega$ meson exclusive photoproduction on the proton above the resonance region ($2.6<W<2.9$ GeV) was measured up to a momentum transfer $-t = 5$ GeV$^2$ using the CLAS detector at Jefferson Laboratory. The $\omega$ channel was identified by detecting a proton and $\pi^+$ in the final state and using the missing mass technique. While the low momentum transfer region shows the typical diffractive pattern expected from Pomeron and Reggeon exchange, at large $-t$ the differential cross section has a flat behavior. This feature can be explained by introducing quark interchange processes in addition to the QCD-inspired two-gluon exchange.

4 data tables

Differential cross section in the energy region 3.20 to 3.38 GeV.

Differential cross section in the energy region 3.38 to 3.56 GeV.

Differential cross section in the energy region 3.56 to 3.74 GeV.

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Measurement of elastic omega photoproduction at HERA

The ZEUS collaboration Derrick, M. ; Krakauer, D. ; Magill, S. ; et al.
Z.Phys. C73 (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

Total Elastic Cross Section.

No description provided.

SLOPE OF DSIG/DT distribution.

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High-energy Photoproduction of $\pi^+ \pi^- \pi^0$, $K^+ K^-$, and $P \bar{P}$ States

Busenitz, J. ; Olszewski, C. ; Callahan, P. ; et al.
Phys.Rev. D40 (1989) 1-21, 1989.
Inspire Record 285137 DOI 10.17182/hepdata.23148

We report measurements from elastic photoproduction of ω's on hydrogen for photon energies between 60 and 225 GeV, elastic φ photoproduction on hydrogen between 35 and 165 GeV and on deuterium between 45 and 85 GeV, elastic photoproduction on deuterium of an enhancement at 1.72 GeV/c2 decaying into K+K−, and elastic and inelastic photoproduction on deuterium of pp¯ pairs.

7 data tables

No description provided.

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A STUDY OF THE REACTIONS GAMMA P ---> OMEGA P AND GAMMA P ---> OMEGA DELTA+

The LAMP2 Group collaboration Barber, D.P. ; Dainton, J.B. ; Lee, L.C.Y. ; et al.
Z.Phys. C26 (1984) 343-351, 1984.
Inspire Record 215619 DOI 10.17182/hepdata.16143
14 data tables

No description provided.

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EXPONENTIAL FITS TO D(SIG)/DT IN OMEGA MASS REGION.

EXPONENTIAL FITS TO D(SIG)/DT OVER FULL ENERGY FOR THREE MASS REGIONS CORRESPONDING TO OMEGA, PHI AND OMEGA*.

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Photoproduction of $\rho^0$ and $\omega$ on Hydrogen at Photon Energies of 20-{GeV} to 70-{GeV}

The Bonn-CERN-Ecole Poly-Glasgow-Lancaster-Manchester-Orsay-Paris-Rutherford-Sheffield collaboration Aston, D. ; Atkinson, M. ; Bailey, R. ; et al.
Nucl.Phys. B209 (1982) 56-76, 1982.
Inspire Record 177583 DOI 10.17182/hepdata.44662
8 data tables

FITS USING THE SODING PARAMETERIZATION.

FITS USING THE ROSS-STODOLSKY PARAMETERIZATION.

No description provided.

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QUASIELASTIC OMEGA PHOTOPRODUCTION AT 50-GEV - 130-GEV

Breakstone, A.M. ; Cheng, D.C. ; Dorfan, D.E. ; et al.
Phys.Rev.Lett. 47 (1981) 1782-1785, 1981.
Inspire Record 173081 DOI 10.17182/hepdata.20625
4 data tables

No description provided.

No description provided.

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Measurement of $\omega$ Meson Photoproduction on Protons From 46 GeV to 180 GeV

Egloff, R.M. ; Davis, P.J. ; Luste, G.J. ; et al.
Phys.Rev.Lett. 43 (1979) 1545, 1979.
Inspire Record 142364 DOI 10.17182/hepdata.3122
4 data tables

THE QUOTED STATISTICAL ERRORS INCLUDE THE UNCERTAINTY IN THE CORRECTION FOR INELASTIC EVENTS. AVERAGE CROSS SECTION IS 1.10 +- 0.08 MUB.

EXPONENTIAL FIT TO DIFFERENTIAL CROSS SECTION.

No description provided.

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Measurement of the Photoproduction Phases of the $\rho$, $\omega$, and $\phi$ Mesons

Bartalucci, S. ; Bertolucci, S. ; Bienlein, J.K. ; et al.
Nuovo Cim. A44 (1978) 587, 1978.
Inspire Record 120711 DOI 10.17182/hepdata.37585
1 data table

DEVIATION OF VECTOR MESON PHOTOPRODUCTION PHASES FROM PURE IMAGINARY.


CHANNEL CROSS SECTIONS FOR 3, 5 AND 7 PRONG REACTIONS.

'PARAMETRIZATION'.

'INTERFERENCE'.

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