HEPData Search

Measurements were made of the differential cross sections for the charge exchange of K − mesons on protons at momenta of 25 and 40 GeV/ c using a high-precision spectrometer with no magnetic field. In the range 5–40 GeV/ c the reaction cross section follows a power-law dependence p K − −1.52 . In the snall momentum transfer region (− t ⪅ m π 2 ) a minimum is observed, similar to that discovered at lower energies. The differential cross sections t = 0 are considerably less than those predicted by the Regge-pole model. The parameters of the effective trajectory are determined.

2 data tables

Table 1

Table 2

Investigation of pi- p --> pi0 n Reaction at Large Momentum Transfer

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

Phys.Lett.B 72 (1977) 132, 1977.

Inspire Record 121448 DOI 10.17182/hepdata.39780

New results on a high statistics measurement of pion-nucleon charge exchange scattering at 40 GeV/ c , extending in momentum transfer up to − t = 1.8 (GeV/ c ) 2 , are reported and compared with an optical impact parameter model, together with previous data for the reaction π − p → ηn at the same energy. The imaginary part of the pole trajectory b 0 ( s ) is determined from the slope of the tangent to the maxima of (−t) 1 2 d σ d t . The linear increase of Im b 0 ( s ) with log s , which has been observed at low energies, continues up to 40 GeV/ c .

2 data tables

Table 1

Table 2

AT SMALL -T, THE BINNING TENDS TO SMEAR OUT THE FORWARD DIP.

Observation of A Meson x --> 2 gamma, with Mass 2.85-GeV/c**2, Produced in the Charge Exchange Reaction pi- p --> x n at 40-GeV/c

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

Phys.Lett.B 72 (1978) 500-502, 1978.

Inspire Record 122151 DOI 10.17182/hepdata.27481

The invariant mass spectrum of neutral final states produced in π − p charge-exchange scattering at 40 GeV/ c has been studied, searching for heavy particles decaying in 2γ. A peak is observed around 2.85 GeV/ c 2 . The cross section of the reaction π − p→X(2.85)+n, times the branching ratio of the X→2 γ decay, is measured to be σ × BR ⋍ 2 × 10 −34 cm 2 .

1 data table

Table 1

MEAN VALUE OF -T = 0.28 +- 0.04 GEV**2.

Production of x (2.85) Particles in Charge Exchange Reaction pi- p --> Chi n, Chi --> 2 gamma at 40-GeV/c

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

Sov.J.Nucl.Phys. 27 (1978) 524, 1978.

Inspire Record 122184 DOI 10.17182/hepdata.19014

None

1 data table

Table 1

No description provided.

Pion Form-Factor Measurement by e+ e- --> pi+ pi- in the Energy Range 2 e from 0.78-GeV Up to 1.34-GeV

Bukin, A.D. ; Vasserman, I.B. ; Koop, I.A. ; et al.

Phys.Lett.B 73 (1978) 226-228, 1978.

Inspire Record 134220 DOI 10.17182/hepdata.27474

The cross section of the reaction e + e − → π + π − has been measured in the energy range 2 E from 0.78 up to 1.34 GeV. The obtained experimental values of the pion form factor exceed notably the ρ -meson tail.

1 data table

Table 1

No description provided.

INCLUSIVE SPECTRA OF PROTONS AND DEUTERONS EMITTED AT AN ANGLE OF 162-degrees FROM PROTON NUCLEON INTERACTIONS AT 2.2-GeV/c, 6-GeV/c AND 8.5-GeV/c

Burgov, N.A. ; Vlasov, M.K. ; Vorobev, L.S. ; et al.

Sov.J.Nucl.Phys. 30 (1979) 371, 1979.

Inspire Record 133478 DOI 10.17182/hepdata.40304

None

15 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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Cross-Section Asymmetry of eta Mesons Photoproduction by Polarized Photons in the Resonance Region

Measurement of Proton Spectra Emitted at an Angle of 162-Degrees in the Reaction pi- a --> p Anything at pi- Energies of 1.5-GeV to 6.0-GeV

Spectra of Deuterons and Tritium at 162-Degrees from Bombardment of C, Cu and Pb Nuclei by pi- Mesons at 1.5-GeV to 6.0-GeV

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

Study of the Reaction K- p --> anti-K0 n at Momenta of 25-GeV/c and 40-GeV/c

Investigation of pi- p --> pi0 n Reaction at Large Momentum Transfer

Observation of A Meson x --> 2 gamma, with Mass 2.85-GeV/c**2, Produced in the Charge Exchange Reaction pi- p --> x n at 40-GeV/c

Production of x (2.85) Particles in Charge Exchange Reaction pi- p --> Chi n, Chi --> 2 gamma at 40-GeV/c

Pion Form-Factor Measurement by e+ e- --> pi+ pi- in the Energy Range 2 e from 0.78-GeV Up to 1.34-GeV

INCLUSIVE SPECTRA OF PROTONS AND DEUTERONS EMITTED AT AN ANGLE OF 162-degrees FROM PROTON NUCLEON INTERACTIONS AT 2.2-GeV/c, 6-GeV/c AND 8.5-GeV/c