HEPData Search

We have studied neutral final states produced in π−p collisions at momenta of 1.71, 1.89, 2.07, 2.27, and 2.46 GeVc, by observing the γ rays emitted. In particular, measurements are presented of (i) π−p→π0n, for which the Regge-pole fit at momenta ≥5.9 GeVc also agrees rather well here; (ii) π−p→η0n, for which the Regge model which fits at higher energies does not agree here; (iii) π−p→π0γn, in which there is some evidence for a diffraction dissociation process as well as ω0-meson production; (iv) π−p→π0π0n, which is dominated by production of N*0(1236)π0 and by peripheral production of pion pairs. In (iv), the former process is found to fit with the same Reggeized ρ-meson exchange model as charge-exchange scattering, while the latter gives indication of the s-wave ππ interaction. An account is given of new techniques, particularly in the data analysis, which were developed in the course of this work.

6 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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Pi- p ---> pi- pi0 p reaction at p(pi-)=4.45 gev/c

Kartamyshev, A.A. ; Mukhin, K.N. ; Romantseva, A.S. ; et al.

Yad.Fiz. 16 (1972) 535-538, 1972.

Inspire Record 75959 DOI 10.17182/hepdata.19260

None

1 data table

Table 1

No description provided.

Pi- p ---> pi- pi- n reaction at p(pi-) = 4.45 gev/c

Kartamyshev, A.A. ; Mukhin, K.N. ; Romantseva, A.S. ; et al.

Yad.Fiz. 15 (1972) 294-299, 1972.

Inspire Record 76079 DOI 10.17182/hepdata.19262

None

1 data table

Table 1

No description provided.

A measurement of elastic pion-proton scattering at 50 gev

Derevchekov, A.A. ; Golovin, N.I. ; Khodirev, Y.C. ; et al.

Phys.Lett.B 48 (1974) 367-370, 1974.

Inspire Record 95356 DOI 10.17182/hepdata.27998

We have measured elastic pion-proton scattering in a 50 GeV/ c π − beam at the 76 GeV proton synchrotron in Serpukhov. Data are presented for four-momenta transfer squared in the range 0.03 < t < 0.4 (GeV/ c ) 2 .

1 data table

Table 1

SLOPE IS 9.1, +0.2, -0.4 GEV**-2 (INCLUDING SYSTEMATIC ERRORS).

pi pi Scattering and pi+ d Interactions at 7-GeV/c

Carroll, J.T. ; Matthews, J.A.J. ; Walker, W.D. ; et al.

Phys.Rev.D 10 (1974) 1430, 1974.

Inspire Record 91650 DOI 10.17182/hepdata.25036

Using bubble-chamber data on the reactions π+d→pspπ0π0, π+d→pspπ+π−, and π−p→nπ+π− at 7 GeV/c incident π momentum, π−π phase shifts are determined for 0.6

6 data tables

Table 1

TWO-PRONG CROSS SECTIONS IN DEUTERIUM WITH SPECTATOR PROTON MOMENTUM CUT AT 0.3 GEV/C.

Table 2

NOTE THAT THE LOW-T DATA POINTS (<0.1 GEV**2) SHOULD BE CORRECTED FOR PAULI EXCLUSION IN DEUTERIUM.

Table 3

FROM FIT WITH BREIT-WIGNER RESONANCES PLUS PHASE SPACE.

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Total Cross-Sections of $\pi^{\pm}$ and $K^{\pm}$ on Protons and Deuterons Between 50-GeV/c and 200-GeV/c

Carroll, A.S. ; Chiang, I.-H. ; Kycia, T.F. ; et al.

Phys.Rev.Lett. 33 (1974) 932, 1974.

Inspire Record 90204 DOI 10.17182/hepdata.21226

Total cross sections of π± and K± on protons and deuterons have been measured at 50, 100, 150, and 200 GeV/c. All of the cross sections rise with increasing momentum.

2 data tables

Table 1

No description provided.

Table 2

PARTICLE-ANTIPARTICLE CROSS SECTION DIFFERENCES - SOME COMMON ERRORS CANCEL.

Small-Angle pi- p Elastic Scattering Measurements

Apokin, V.D. ; Derevshchikov, A.A. ; Matulenko, Yu.A. ; et al.

Phys.Lett.B 56 (1975) 391-394, 1975.

Inspire Record 90800 DOI 10.17182/hepdata.27866

We have measured small angle elastic pion-proton scattering in 40 and 50 GeV c π − beams at Serpukhov. Analysis of the data in the Coulomb interference region yields a value for the ratio of the real to the imaginary part of the strong amplitude, ϱ (0)=−0.074 ± 0.033 at 40 GeV/ c and ϱ (0)=−0.006 ±0.026 at 50 GeV/ c

2 data tables

Table 1

STATISTICAL ERRORS ONLY.

Table 2

STATISTICAL ERRORS ONLY.