O' Fallon, J.R.
PI- P --> PI- P
DSIG/DOMEGA
[2.0, 5.0]
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Pi- p elastic scattering near 180 degrees between 600 and 1280 mev/c

Crabb, D.G. ; Keller, R. ; O' Fallon, J.R. ; et al.
Phys.Rev.Lett. 27 (1971) 216-219, 1971.
Inspire Record 68952 DOI 10.17182/hepdata.21460

The differential cross sections for π−p elastic scattering over the angular range 155° to 177° in the center of mass have been measured at 33 incident-pion momenta in the range 600 to 1280 MeV/c. Angular distributions are presented. The extrapolated differential cross sections at 180° show considerable structure, in particular a dip near 1150 MeV/c. In general the near-180° cross sections do not agree with existing phase shift solutions above 1000 MeV/c

48 data tables match query
Table 1

INTERPOLATED DATA.

Table 2

INTERPOLATED DATA.

Table 3

INTERPOLATED DATA.

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A TABULATION OF PION - NUCLEON FORWARD AMPLITUDES UP TO 30-GeV/c

Carter, A.A. ; Carter, J.R. ;
RL-73-024, 2006.
Inspire Record 44589 DOI 10.17182/hepdata.75551

None

139 data tables match query
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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Measurement of pi-p Elastic Scattering at 180-degrees

Kormanyos, S.W. ; Krisch, A.D. ; O'Fallon, J.R. ; et al.
Phys.Rev. 164 (1967) 1661-1671, 1967.
Inspire Record 944948 DOI 10.17182/hepdata.51371

We have measured the differential cross section for π−p elastic scattering at 180° in steps of 0.10 GeV/c or less in the region P0=1.6 to 5.3 GeV/c. We detected elastic scattering events, from protons in a liquid H2 target, with a double spectrometer consisting of magnets and scintillation counters in coincidence. The incident π− beam was counted by scintillation counters. The cross section was found to have considerable structure. This may be interpreted as interference between the resonant amplitudes and the nonresonant or background amplitude. Very strong destructive interference occurs around P0=2.15 GeV/c, where the cross section drops almost two orders of magnitude in passing through the N*(2190). Another interesting feature of the data is a large narrow peak in the cross section at P0=5.12 GeV/c, providing firm evidence for the existence of a nucleon resonance with a mass of 3245±10 MeV. This N*(3245) has a full width of less than 35 MeV, which is about 1% of its mass. From this experiment we were able to determine the parity and the quantity χ(J+12) for each N* resonance, where χ is the elasticity and J is the spin of the resonance.

45 data tables match query
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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Pi- p elastic scattering at 2.29 gev/c

Hagopian, S. ; Hagopian, V. ; Bogart, E. ; et al.
Phys.Rev.D 5 (1972) 2684-2688, 1972.
Inspire Record 74158 DOI 10.17182/hepdata.3597

The reaction π−+p→π−+p has been studied in the 15-in. bubble chamber at the Princeton-Pennsylvania Accelerator. The elastic scattering cross section was determined to be 8.5 ± 0.2 mb. The forward peak fits to an exponential in t with a slope of 8.1 ± 0.2 (GeV/c)−2. The forward differential cross section dσdΩ(0)=17.9±0.7 mb/sr. A fit of the center-of-mass angular distribution to Legendre polynomials needed terms up to the 12th order, corresponding to the highest nonzero partial wave of L=6.

4 data tables match query
Table 1

No description provided.

Table 2

FORWARD D(SIG)/DOMEGA IS 17.9 +- 0.7 MB/SR. SLOPE IS 8.1 +- 0.2 GEV**-2 (-T = 0.1 TO 0.4 GEV**2).

Table 3

OTHER 2.27 GEV/C DATA ALSO QUOTED.

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