Grosso, C.
PHASE
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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.A 44 (1978) 587, 1978.
Inspire Record 120711 DOI 10.17182/hepdata.37585

We measured 30 000 wide-angle electron-positron pairs from the reaction γ+p→p+e++e− in the invariant-mass region 500≤m≤1060 MeV. The photoproduction amplitudes of the ρ, ω and ϕ mesons were measured to deviate from being pure imaginary by 37.5°−3.1°+2.8°, 29.6°−12.9°+15.5°, 3.4°−4.2°+5.3°,respectively.

1 data table
Table 1

DEVIATION OF VECTOR MESON PHOTOPRODUCTION PHASES FROM PURE IMAGINARY.


Coherent K0(S) Regeneration in Hydrogen and Deuterium from 3.5-GeV/c to 10.5-GeV/c

Freytag, D. ; Schultz, C. ; Patel, P. ; et al.
Phys.Rev.Lett. 35 (1975) 412-416, 1975.
Inspire Record 103337 DOI 10.17182/hepdata.21146

The amplitude and phase for coherent regeneration in hydrogen and deuterium have been measured for six momentum bins in the range 3.5-10.5 GeV/c. Over this region the phase, ϕf, is consistent with being constant and has the value - 60°±8° for hydrogen and - 46°±8° for deuterium. Power-law fits of the form plabn for the amplitudes when combined with other data give n=−0.60±0.02 for hydrogen and n=−0.52±0.02 for deuterium.

2 data tables
Table 1

No description provided.

Table 2

NOTE PHASE IS HERE DEFINED AS THE PHASE OF I*AMP(NAME=REGEN) AND SO DIFFERS BY 90 DEG FROM USUAL DEFINITION.


A Test of the Optical Theorem

Eberhard, P.H. ; Tripp, R.D. ; Declais, Y. ; et al.
Phys.Lett.B 53 (1974) 121-124, 1974.
Inspire Record 90454 DOI 10.17182/hepdata.27919

Forward differential cross sections for π − p elastic scattering at 1.0, 1.5 and 2.0 GeV/ c show that the square of the imaginary parts of the nuclear scattering agrees with the optical theorem prediction within ±3%, when averaged over the three momenta.

1 data table
Table 1

No description provided.


Observation of k(l) - k(s) regeneration from liquid hydrogen. aachen-cern-turin collaboration,

Darriulat, P. ; Grosso, C. ; Holder, M. ; et al.
Phys.Lett.B 33 (1970) 433-437, 1970.
Inspire Record 69387 DOI 10.17182/hepdata.28718

The K L K S transmission regeneration of a K L beam traversing a liquid hydrogen target has been observed over the momentum interval 3.0–6.0 GeV/ c . Results are in good agreement with predictions based on dispersion relations.

2 data tables
Table 1

Regeneration amplitude.

Table 2

No description provided.


Angular dependence of k-l k-s regenerative scattering for copper and lead nuclei at high energies

Foeth, H. ; Holder, M. ; Radermacher, E. ; et al.
Phys.Lett.B 31 (1970) 544-548, 1970.
Inspire Record 63172 DOI 10.17182/hepdata.28805

Elastic and inelastic K L  S regenerative scattering on copper and lead nuclei have been observed up to a momentum transfer of 0.17 GeV/ c . The elastic differential cross-section is of a ”diffractive” type. It can be described successfully in terms of an optical model only assuming an appreciable neutron excess in the vicinity of the nuclear surface.

2 data tables
Table 1

No description provided.

Table 2

No description provided.