Callahan, P.
Angular Dependence
[6.0, 7.0]
Max results
Sort by Reverse order

Showing 2 of 2 results

Study of $\eta \pi^+ \pi^-$ States in the $\rho^\prime$ (1600) Mass Region Photoproduced in the Reaction $\gamma p \to \eta \pi^+ \pi^- p$ at Photon Energies of 20-{GeV} to 70-{GeV}

The Omega Photon collaboration Atkinson, M. ; Axon, T.J. ; Barberis, D. ; et al.
Z.Phys.C 30 (1986) 531, 1986.
Inspire Record 218611 DOI 10.17182/hepdata.15991

In diffractive photoproduction ofηπ+π−, the two-body substatesηρ0 andA2π are found to contribute significantly to the cross-section forηπ+π− masses below 2.4 GeV. From a spin-parity analysis the branching ratio, ρ′(1600)→ηρ/ρ′(1600)→, is determined to be <0.02 at the 68.3% confidence level. TheA2π component shows an enhancement around 1.7 GeV. The spin-parity analysis indicates a probable contribution to this signal from exclusive photoproduction of theg(1690).

6 data tables
Table 1

No description provided.

Table 2

Not corrected for 35% background under the eta --> gamma gamma peak.

Table 3

Not corrected for 35% background under the ETA --> GAMMA GAMMA peak.

More…

Observation of Vector Meson Production in Inclusive p p Reactions

The Bonn-Hamburg-Munich collaboration Blobel, V. ; Fesefeldt, H. ; Franz, H. ; et al.
Phys.Lett.B 48 (1974) 73-76, 1974.
Inspire Record 80794 DOI 10.17182/hepdata.27994

We have measured cross sections, rapidity and transverse momentum distributions, and vector meson polarization for the reactions pp→ ϱ o +anything, pp→ ω +charged particles, and pp → K ∗± + anything at incident laboratory momenta of 12 and 24 GeV/ c . We discuss various consequences of our results as well as possible connections with lepton pair production.

9 data tables
Table 1

No description provided.

Table 2

DATA OBTAINED FROM FIGURE BY A.A. LEBEDEV.

Table 3

DATA OBTAINED FROM FIGURE BY A.A. LEBEDEV.

More…