HEPData Search

The total 1r- -p interaction cross sections (of) were measured with an accuracy of 1.5-2% for about 50 pion energies between 140 and 360 Mev. The pion energy was known to within ± 1%. No anomalies in the energy dependence of Of were found which could indicate the existence of a p0meson with a mass in the range of 270 to 410 Mev/c2• The data are inconsistent with the energy value E2 = 650 Mev for the second maximum of Of found by Frisch et al. 7 but agree with the conclusion drawn by Brisson et al. 8 that it should be located at a lower energy ( E2 :::::: 610 Mev). The data are in agreement with the dispersion relations for 1r- -p scattering. It is thus demonstrated that the PuppiStanghellini problem as such no longer exists and that it arose only as a result of an inaccurate knowledge of the total 1r--p interaction cross section.

1 data table

Table 1

No description provided.

An Investigation of the $\pi + p \longrightarrow n + {\pi}^0$ Charge Exchange Scattering and the ${\pi}^{-} + p \longrightarrow n + {\eta}({\eta} {\longrightarrow} 2\gamma)$ Reaction in the 1.55-4.5 BeV/c Region

Barmin, V.V. ; Dolgolenko, A.G. ; Krestnikov, Yu.S. ; et al.

Sov.Phys.JETP 19 (1964) 102-106, 1964.

Inspire Record 1407540 DOI 10.17182/hepdata.70207

The rr- + p- n + rr0 charge-exchange scattering and the rr- + p- n + 1J ( 1J- 2y) reaction were investigated in 1.55-4.5 BeVIc region in a 17-liter propane-xenon bubble chamber. The total cross sections of both reactions were measured in this region. The angular distributions of the rr0 mesons in the charge-exchange reaction were obtained. The backward exchange-scattering cross sections du( rr- + p- n + rr 0 )ldQ were estimated.

3 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

Investigation of $\pi^- + p \rightarrow \pi^0 + n$ exchange scattering at 2.8. BeV/c

Barmin, V.V. ; Dolgolenko, A.G. ; Meshkovskii, A.G. ; et al.

Sov.J.Nucl.Phys. 4 (1967) 592-595, 1967.

Inspire Record 1407282 DOI 10.17182/hepdata.69980

None

3 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

Some results on the $\rho$ (1.71) resonance produced in 9.1 GeV/c $\pi^{-}$-p collisions.

Armenise, N. ; Fogli Muciaccia, M.T. ; Piccarelli, V. ; et al.

Lett.Nuovo Cim. 4 (1972) 205-209, 1972.

Inspire Record 1393350 DOI 10.17182/hepdata.37349

None

1 data table

Table 1

No description provided.

Measurement of the $\pi^{-} p \rightarrow X^{0}n$ cross section in the momentum up to 50 GeV/c

Bolotov, V.N. ; Isakov, V.V. ; Kakuridze, D.B. ; et al.

Sov.J.Nucl.Phys. 19 (1974) 308-310, 1974.

Inspire Record 1392569 DOI 10.17182/hepdata.19171

None

2 data tables

Table 1

No description provided.

Table 2

No description provided.

Resonance production by 8 GeV/c positive pions on protons

The Aachen-Berlin-CERN collaboration Deutschmann, M. ; Schulte, R. ; Weber, H. ; et al.

Phys.Lett. 12 (1964) 356-360, 1964.

Inspire Record 1389790 DOI 10.17182/hepdata.30824

None

1 data table

Table 1

Cross sections based on total PI+ P cross section =25.8 mb (Vondardel, PRL 8, 173 (1962)).

Observation of the heavy nucleon isobar $N^{∗}_\frac1{2}(3690)$

Bartke, J. ; Czyżewski, O. ; Danysz, J.A. ; et al.

Phys.Lett.B 24 (1967) 118-120, 1967.

Inspire Record 1389636 DOI 10.17182/hepdata.29588

The analysis of the eight-prong interactions of 8 GeV/ c π + with protons indicates the existence of the new heavy nucleon isobar with the mass M = 3.69 GeV and the isospin T = 1 2 .

1 data table

Table 1

No description provided.

Study of the reaction $\pi^- p \rightarrow \omega^0 n$ at momenta 20 to 50 GeV/c

Bolotov, V.N. ; Isakov, V.V. ; Kakauridze, D.B. ; et al.

Phys.Lett.B 53 (1974) 217-220, 1974.

Inspire Record 1388799 DOI 10.17182/hepdata.27929

The mass spectrum of 3γ states produced in π−p collisions has been studied. A peak corresponding to ωo→πoγ decay in the π−p→ωon reaction was selected. The measurements were performed at the IHEP accelerator at momenta 21, 25, 32.5, 40 and 48 GeV/c. The reaction cross section decreases with the momentum in a power form (∼P−2.4) The differential cross section follows exponential t-dependence, exp (bt). The scattering cone shrinks slowly with the energy increase.

1 data table

Table 1

No description provided.

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Elastic scattering of 7.2-BeV negative pions on protons

The investigation of charge-exchange of $\pi^- + p \rightarrow n + \pi^0$ and $\pi^- + p \rightarrow n + \eta (\eta \rightarrow 2\gamma)$ reaction in the momentum interval 1.25-4.5 BeV/c

A Search For the $\rho^0$ Meson and a Check of the Dispersion Relations in π-N Scattering

An Investigation of the $\pi + p \longrightarrow n + {\pi}^0$ Charge Exchange Scattering and the ${\pi}^{-} + p \longrightarrow n + {\eta}({\eta} {\longrightarrow} 2\gamma)$ Reaction in the 1.55-4.5 BeV/c Region

Investigation of $\pi^- + p \rightarrow \pi^0 + n$ exchange scattering at 2.8. BeV/c

Some results on the $\rho$ (1.71) resonance produced in 9.1 GeV/c $\pi^{-}$-p collisions.

Measurement of the $\pi^{-} p \rightarrow X^{0}n$ cross section in the momentum up to 50 GeV/c

Resonance production by 8 GeV/c positive pions on protons

Observation of the heavy nucleon isobar $N^{∗}_\frac1{2}(3690)$

Study of the reaction $\pi^- p \rightarrow \omega^0 n$ at momenta 20 to 50 GeV/c