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MEASUREMENT OF PI- P ---> PI0 PI0 N AT 25-GEV/C

Apel, W.D. ; Augenstein, K.H. ; Bertolucci, E. ; et al.

Nucl.Phys.B 201 (1982) 197-204, 1982.

Inspire Record 181089 DOI 10.17182/hepdata.17634

The reaction π − p→ π 0 π 0 n has been measured with a 648 channel hodoscope spectrometer for the detection of the four γ's from the π 0 decays. The π 0 π 0 D-wave is fully compatible with the f 0 contribution as it is determined in high-statistics π + π − experiments. The magnitude of the π 0 π 0 S-wave and the cosinus of its phase angle (relative to the known D-wave) are determined from fits to the π 0 π 0 angular distributions. Argand diagrams for the I = 0 amplitude S 0 are given for the range 1000 to 1500 MeV/ c 2 . Two solutions exist. One exceeds the unitarity limit above 1200 MeV/ c 2 . The other remains within the unitarity limit and is nearly elastic up to 1450 MeV/ c 2 . It indicates an S 0 wave resonance around 1300 MeV/ c 2 .

2 data tables

Table 1

No description provided.

Table 2

No description provided.

Reaction $\pi^- p \to \eta n$ in the 15-{GeV}/$c$ to 40-{GeV}/$c$ Momentum Range

The Serpukhov-CERN collaboration Apel, W.D. ; Augenstein, K.H. ; Bertolucci, E. ; et al.

Nucl.Phys.B 152 (1979) 1, 1979.

Inspire Record 133409 DOI 10.17182/hepdata.41487

A high-statistics measurement of the reaction π − p→ η n; η →2 γ has been performed at the 70 GeV Serpukhov accelerator for 15, 20, 25, 30 and 40 GeV/ c incident pion momentum using the NICE set-up with its associated 648-channel hodoscope spectrometer for γ-ray detection. It is found that the spin-flip and non-spin-flip amplitudes can be parametrized, for small | t |, as exponentials with the same slopes to within a few percent. For | t | ≳ 1 (GeV/ c ) 2 there is a break in the differential cross section. In addition, the A 2 effective trajectory deviates markedly for | t | ≳ 1 GeV/ c ) 2 from the linear behaviour valid for smaller | t |.

4 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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Reaction pi- p --> eta n at Large Momentum Transfer

The Serpukhov-CERN collaboration Apel, W.D. ; Augenstein, K. ; Bertolucci, E. ; et al.

Sov.J.Nucl.Phys. 27 (1978) 82-83, 1978.

Inspire Record 119329 DOI 10.17182/hepdata.11051

None

3 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

Investigation of the reaction pi- p ---> eta n at momenta up to 40-GeV/c

The Serpukhov-CERN collaboration Apel, W.D. ; Bertolucci, E. ; Bushnin, Yu.B. ; et al.

Sov.J.Nucl.Phys. 25 (1977) 194-197, 1977.

Inspire Record 118649 DOI 10.17182/hepdata.19079

None

2 data tables

Table 1

No description provided.

Table 2

No description provided.

Reaction pi- p ---> x0 n, x0 ---> 2 gamma at Momenta 15-GeV/c and 40-GeV/c

The Serpukhov-CERN collaboration Apel, W.D. ; Bertolucci, Ennio ; Donskov, S V ; et al.

Sov.J.Nucl.Phys. 25 (1977) 300, 1977.

Inspire Record 91260 DOI 10.17182/hepdata.19034

None

2 data tables

Table 1

No description provided.

Table 2

No description provided.

Study of the Reaction pi- p ---> Omega0 N at Momenta 20-GeV/c to 50-GeV/c

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

Sov.J.Nucl.Phys. 21 (1975) 166, 1975.

Inspire Record 91420 DOI 10.17182/hepdata.19115

None

2 data tables

Table 1

No description provided.

Table 2

AVERAGED OVER ALL MOMENTA OF EXPERIMENT. SLOPE = 6 +- 1 GEV**-2.

Negative pion charge exchange scattering on protons in the momentum range 20-50 gev/c

Bolotov, V.N. ; Isakov, V.V. ; Kachanov, V.A. ; et al.

Nucl.Phys.B 73 (1974) 365-386, 1974.

Inspire Record 94656 DOI 10.17182/hepdata.32247

Differential cross sections for charge exchange π − p → π 0 n have been measured for momenta up to 50 GeV/ c . The cross section falls as a power of energy. The forward scattering cone shrinks with increasing energy. The cross section for charge exchange at zero angle drops with momentum as P −0.81±0.05 . The charge exchange cross section in the region of the second maximum decrease as P −2.8±0.1 . The ϱ trajectory is described by a linear function α ( t ) = 0.56 + 0.97 t in the interval 0 < − t -<1.5 (GeV/ c ) 2 .

2 data tables

Table 1

No description provided.

Table 2

No description provided.

Reaction pi- p ---> eta0 n at momenta up to 50 gev/c

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

Nucl.Phys.B 73 (1974) 387-400, 1974.

Inspire Record 94655 DOI 10.17182/hepdata.32318

Differential cross sections for π − p → η 0 n, η 0 → 2 γ have been measured from 20 to 50 GeV for four-momentum transfers − ≲ 3 (GeV/ c ) 2 . The cross sections decrease as a power of momentum and the forward scattering cone shrinks slowly. The parameters of the A 2 trajectory, which is considerably non-linear, have been determined.

2 data tables

Table 1

No description provided.

Table 2

No description provided.

Anti-proton charge exchange on protons at 25 and 35 gev/c

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

Nucl.Phys.B 73 (1974) 401-409, 1974.

Inspire Record 94654 DOI 10.17182/hepdata.32275

Cross sections for p ̄ p → n ̄ n at 25 and 35 GeV/ c have been measured. The cross sections decrease with increasing momentum as 1/ P 2 . A narrow peak is observed in the momentum transfer interval 0 ⩽ − t ≲ 0.02 (GeV/ c 2 in the differential cross sections. Neither ϱ nor A 2 exchange contribute to the process in the investigated energy range.

3 data tables

Table 1

K- CEX MEASURED BY STARS FROM KL AS A CHECK.

Table 2

No description provided.

Table 3

No description provided.