Denisov, A.G.
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Study of the reaction k- p ---> anti-k n pi at 4.2 gev/c

Tiecke, H.G.J M. ; Crijns, F.J.G H. ; Heinen, P.M. ; et al.
Nucl.Phys.B 39 (1972) 596-615, 1972.
Inspire Record 75240 DOI 10.17182/hepdata.32931

Results are presented on effective-mass distributions, differentisl cross sections and longitudinal c.m. momentum distributions for the channels K − p → K − p π o , K o p π − and K − π + n , obtained from a sample of approximately 28 000 inelastic two-pronged interactions at 4.2 GeV/ c incident momentum. The results are in satisfactory agreement with the prediction of a generalized Veneziano-model corrected for (non-dual) π -and pomeron exchange. For the channel K − pπ o pomeron exchange contributes about 20% of the cross section. In the channel K − π + n the dual, pion and pomeron contributions are responsible for resp. 15%, 65% and 20% of the total cross section.

5 data tables
Table 1

BREIT-WIGNER FITS.

Table 2

MEASURED OFF GRAPH.

Table 3

MEASURED OFF GRAPH.

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Energy dependence of pi-, K- and anti-p total cross-sections on protons in the momentum range up to 65-GeV/c

Denisov, S.P. ; Dmitrevsky, Yu.P. ; Donskov, S.V. ; et al.
Phys.Lett.B 36 (1971) 528-532, 1971.
Inspire Record 67295 DOI 10.17182/hepdata.28394

π − p , K − p and p p total cross-sections are measured at momenta up to 65GeV/ c with statistical accuracy 0.3 ÷ 0.6% and systematical (scale) error ≈ 0.4%.

3 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.


Total cross-sections of pi+, K+ and p on protons and deuterons in the momentum range 15-GeV/c to 60-GeV/c

Denisov, S.P. ; Donskov, S.V. ; Gorin, Yu.P. ; et al.
Phys.Lett.B 36 (1971) 415-421, 1971.
Inspire Record 67626 DOI 10.17182/hepdata.28398

Total cross-section data are presented for protons, positive pions and positive kaons on protons and deuterons in the momentum range 15 GeV/ c to 60 GeV/ c in 5 GeV/ c steps.

3 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.


Experimental comparison of anti-d p and anti-p d total cross sections

Gorin, Yu.P. ; Denisov, S.P. ; Donskov, S.V. ; et al.
Yad.Fiz. 14 (1971) 134-136, 1971.
Inspire Record 69450 DOI 10.17182/hepdata.19261

None

2 data tables
Table 1

Axis error includes +- 0.0/0.0 contribution (GLAUBER).

Table 2

Axis error includes +- 0.0/0.0 contribution (GLAUBER).


Observation of antihelium-3

Antipov, Yu.M. ; Denisov, S.P. ; Donskov, S.V. ; et al.
Nucl.Phys.B 31 (1971) 235-252, 1971.
Inspire Record 68563 DOI 10.17182/hepdata.41500

3 H̃e nuclei were observed in the negative beam, produced by 70 GeV protons on an Al target. Five 3 H̃e have been identified among 2.4 · 10 11 particles that passed through the apparatus. Scintillation and Čerenkov counters were used to measure the electrical charge and velocity of particles. The mass of 3 H̃e is found to be M 3 H ̃ e = (1.00 ± 0.03)3m p , the charge is z = (0.99 ± 0.03)2 e . The ratio of differential production cross sections of 3 H ̃ e (P = 20 GeV /c) and π − (P = 10 GeV/c ) equals 2 · 10 −11 . This corresponds to antihelium −3 production cross section d 2 σ 3 H ̃ e / d Ω d P = 2.0 · 10 −35 cm 2 / sr · GeV /c per Al nuclei and 2.2 · 10 −36 cm 2 sr · GeV/ c per nucleon.

2 data tables
Table 1

No description provided.

Table 2

No description provided.


Investigation of the phi-meson resonance by electron-positron colliding beams

Balakin, V.E. ; Budker, G.I. ; Pakhtusova, E.V. ; et al.
Phys.Lett.B 34 (1971) 328-332, 1971.
Inspire Record 69313 DOI 10.17182/hepdata.28704

Using the colliding beam machine, VEPP-2, the excitation curve of the ø-meson resonance was investigated in the three main decay modes. The resonance parameters obtained are the width, the total cross-section and the branching ratios. Namely: Γ = (4.67 ± 0.42) Mev B ( K + K − ) = (54.0 ± 3,4) % σ o = (3.96 ± 0.35) μB B ( K o s K O L ) = (25.7 ±3,0) % B ( e + e − = (2,81 ± 0.25) × 10 −4 B ( π + π − π o ) = (20.3 ± 4,2) %

2 data tables
Table 1

BREIT-WIGNER FITS TO DATA POINTS AT 9 ENERGIES AROUND PHI FOR EACH CHANNEL. PEAK CROSS SECTIONS QUOTED.

Table 2

PION FORM FACTOR AT PHI MASS, ALLOWING FOR POSSIBLE INTERFERENCE.


Measurements of anti-deuteron absorption and stripping cross sections at the momentum 13.3 gev/c

Denisov, S.P. ; Donskov, S.V. ; Gorin, Yu.P. ; et al.
Nucl.Phys.B 31 (1971) 253-260, 1971.
Inspire Record 68562 DOI 10.17182/hepdata.33323

The absorption cross sections of antideuterons with the momentum P = 13.3 GeV/ c by Li, C, Al, Cu and Pb nuclei have been measured. Antiproton stripping of antideuterons has been registered and its cross section for C, Al and Cu has been defined. The binding energy of antideuteron is found to be ε d = 2.4 ± 0.6 MeV by measuring the angular distribution of antiprotons from stripping.

1 data table
Table 1

No description provided.


Experimental comparison of anti-d p and anti-p d total cross-sections

Denisov, S.P. ; Donskov, S.V. ; Gorin, Yu.P. ; et al.
Phys.Lett.B 34 (1971) 167-169, 1971.
Inspire Record 69336 DOI 10.17182/hepdata.5847

d ̄ p and p ̄ d total cross-sections have been measured at 13.3 and 6.65 GeV/ c respectively to check CPT-invariance. The standard transmission technique was used. The difference of d ̄ p and p ̄ d total cross-sections appeared to be equal 0.2 ± 2.6 mb. In addition d ̄ d and p ̄ p total cross-sections have been obtained. The experimental data allowed us to derive the total cross-section of antineutrons on protons, neutrons and deutrons.

7 data tables
Table 1

'1'. '2'. '3'. 'GLAUB'.

Table 2

No description provided.

Table 3

No description provided.

More…

Further search for quarks at the 70 gev ihep accelerator

Antipov, Yu.M. ; Bolotov, V.N. ; Devishev, M.I. ; et al.
Phys.Lett.B 30 (1969) 576-580, 1969.
Inspire Record 63242 DOI 10.17182/hepdata.28870

The results of the experiment searching for quarks with charge − 1 3 and 2 3 produced by 70 GeV protons on an aluminium target at zero angle are reported. For the selection of quarks the system of spectrometric scintillation counters, time-of-flight spectrometer, gas Cerenkov threshold counter and magnetic spectrometer with spark chambers were used. In the range of masses available at the IHEP accelerator, quarks were not found. The upper limit estimation of the differential cross-section for quark production with mass ⩽ 5 GeV /c 2− and charge −1 3 is 7×10 −38 cm 2 / ster GeV /c (with 90% confidence level). The total cross-section for quark production with charge −1 3 and mass 4.5–5 GeV /c 2 does not exceed 3×10 −39 cm 2 .

2 data tables
Table 1

No description provided.

Table 2

No description provided.


Total and absorption cross-sections of pi-, k- and anti-p in the momentum range 20-65 gev/c

Allaby, J.V. ; Bushnin, Yu.B. ; Gorin, Yu.P. ; et al.
Yad.Fiz. 12 (1970) 538-557, 1970.
Inspire Record 63289 DOI 10.17182/hepdata.18403

None

2 data tables
Table 1

No description provided.

Table 2

No description provided.