HEPData Search

Differential cross sections have been measured for π+p and π−p elastic scattering at 378, 408, 427, 471, 509, 547, 586, 625, 657, and 687 MeV/c in the angular range -0.8<cosθc.m.<0.8. The scattered pion and recoil proton were detected in coincidence using scintillation-counter hodoscopes. A liquid-hydrogen target was used except for measurements at forward angles, in which a CH2 target was used. Statistical uncertainties in the data are typically less than 1%. Systematic uncertainties in acceptance and detection efficiency are estimated to be 1%. Absolute normalization uncertainties are 2–3 % for most of the data. The measurements are compared with previous data and with the results of recent partial-wave analyses. The data are fit with Legendre expansions from which total elastic cross sections are obtained.

23 data tables

Table 1

Normalisation uncertainty = 3.1 pct.

Table 2

Normalisation uncertainty = 4.1 pct.

Table 3

Normalisation uncertainty = 2.1 pct.

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Analyzing Power for $\pi^- P$ Charge Exchange and a Test of Isospin Invariance Up to $\eta$ Threshold

Wightman, J.A. ; Eichon, A.D. ; Kim, G.J. ; et al.

Phys.Rev.D 36 (1987) 3529-3532, 1987.

Inspire Record 255689 DOI 10.17182/hepdata.23322

The analyzing power for π−p→π0n has been measured at five incident momenta from 547 to 687 MeV/c using a transversely polarized target. Data were obtained with scintillation counters at 10 angles simultaneously covering the range −0.9≤cosθc.m.π≤0.9. Our results and those of Kim et al. are used for a model-independent test of isospin invariance which is based on the triangle inequalities applied to the transversity-up as well as the transversity-down cross sections. No evidence is found of isospin violation.

5 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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CM Energies (GeV)

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MEASUREMENT OF TOTAL PI0 MESON PHOTOPRODUCTION CROSS-SECTIONS ON LI-6 AND C-12 NUCLEI NEAR THE THRESHOLD. (IN RUSSIAN)

MULTIPLICITY CORRELATIONS BETWEEN PI0 MESONS AND NONRELATIVISTIC PROTONS IN D AND C-12 INTERACTIONS WITH TANTALUM NUCLEI AT 4.2-GEV/C PER NUCLEON. (IN RUSSIAN)

E+ E- PAIR PRODUCTION BY A SYNCHROTRON RADIATION PHOTON ON A COUNTER BEAM ELECTRON. (IN RUSSIAN)

Study of the Nucleon Structure Functions in Neutrino Interactions in the Energy Range of 10-{GeV} - 200-{GeV}

INVESTIGATION OF JET STRUCTURES IN K- P AND ANTI-P P INTERACTIONS AT INCIDENT MOMENTUM OF 32-GEV/C

CROSS-SECTION OF PARTICLE DIFFRACTIVE PRODUCTION IN ANTI-P P INTERACTIONS AT 32-GEV/C. (IN RUSSIAN)

Search for a Possible Exotic State C (1480) at the Vepp-2m Storage Ring

Observation of the Tensor X (1810) Meson in 300-{GeV} Central $\pi^- N$ Collisions (In Russian)

Differential Cross-sections for $\pi^+ P$ and $\pi^- P$ Elastic Scattering From 378-{MeV}/c to 687-{MeV}/c

Analyzing Power for $\pi^- P$ Charge Exchange and a Test of Isospin Invariance Up to $\eta$ Threshold