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Invariant mass spectrum of μ + μ − pairs produced by 70 GeV/ c protons in Be target are presented. Distinct enhancements in the mass regions of ϱ, ω mesons, φ meson and J/ψ particle are observed. For J/ψ production x and p ⊥ 2 distributions are given. The total cross section for the reaction p + Be → ( J ψ → μ + μ − ) + … is equal to 9.5 ± 2.5 nb/nucleus .

5 data tables

Table 1

No description provided.

Table 2

ASSUME B.R.(MU+MU-) = 0.069.

Table 3

ASSUME A**(2/3) DEPENDENCE FOR SIGMA.

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Observation of a Spin 4 Neutral Meson with 2-GeV Mass Decaying in pi0 pi0

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

Phys.Lett.B 57 (1975) 398, 1975.

Inspire Record 99595 DOI 10.17182/hepdata.27849

The invariant mass spectrum of neutral meson states from π − p interactions at 40 GeV/ c incident momentum has been investigated in a high statistics experiment performed at the 70 GeV IHEP accelerator. To detect the high energy photons coming from the produced neutral states, a hodoscope spectrometer with a computer on-line was used. A clear structure on the mass spectrum of dipions produced in the reaction π − p→π°π°n is observed at 2 GeV. The decay angular distributions show in this mass region the variation with mass typical of a state with a spin J = 4. The mass of the observed meson is found to be M = (2020±30)MeV and the estimate of the full width is (180±60) MeV.

1 data table

Table 1

No description provided.

Angular distributions of the asymmetry of the gamma p ---> p pi0 reaction with the gamma-quanta energies of 400, 450, 500, 550, 650 mev

Ganenko, V.B. ; Gorbenko, V.G. ; Zhebrovskii, Yu.V. ; et al.

Yad.Fiz. 20 (1974) 356-358, 1974.

Inspire Record 95035 DOI 10.17182/hepdata.19140

None

11 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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Elastic 1 gev proton scattering on k-39 and ca-40 nuclei

Alkhazov, G.D. ; Amalskii, G.M. ; Belostotskii, S.L. ; et al.

Zh.Eksp.Teor.Fiz. 18 (1973) 309-312, 1973.

Inspire Record 87607 DOI 10.17182/hepdata.37171

None

3 data tables

Table 1

X ERROR D(TARGET) = 96.97 PCT.

Table 2

X ERROR D(TARGET) = 93.08 PCT.

Table 3

Asymmetry of the cross section of gamma d ---> pi0 d reaction at photon energy of 350 mev

Ganenko, V.B. ; Gorbenko, V.G. ; Zhebrovskii, Yu.V. ; et al.

Pisma Zh.Eksp.Teor.Fiz. 18 (1973) 483-486, 1973.

Inspire Record 87826 DOI 10.17182/hepdata.39926

None

1 data table

Table 1

No description provided.

Transmission regeneration of neutral k-mesons on hydrogen in the momentum region 14-42 gev/c

Birulev, V.K. ; Vovenko, A.S. ; Vestergombi, G. ; et al.

Yad.Fiz. 15 (1972) 959-965, 1972.

Inspire Record 76029 DOI 10.17182/hepdata.19284

None

1 data table

Table 1

No description provided.

Transmission regeneration of neutral k-mesons on hydrogen in the momentum region of 14-42 gev/c

Birulev, V.K. ; Fadeev, N.G. ; Golovanov, L.B. ; et al.

Phys.Lett.B 38 (1972) 452-456, 1972.

Inspire Record 75815 DOI 10.17182/hepdata.28334

The measurements of the transmission regeneration amplitude on hydrogen in the momentum region of 14–42 GeV/ c indicate that in accordance with the Pomeranchuk theorem its magnitude |ƒ° − ƒ °|/k decreases as energy increases and its phase is approximately constant and equal to arg (ƒ° − ƒ °) = (−118 ± 13)° .

1 data table

Table 1

THE REGENERATION AMPLITUDE DECREASES OVER THIS ENERGY RANGE.

ASYMMETRY MEASUREMENTS IN PION PHOTOPRODUCTION BY POLARIZED PHOTONS IN THE ENERGY RANGE FROM 250-MeV TO 600-MeV

Antufev, Yu.P. ; Agranovich, V.L. ; Ganenko, V.B. ; et al.

PRINT-70-2307, 1970.

Inspire Record 1105361 DOI 10.17182/hepdata.75432

None

1 data table

Table 1

No description provided.

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Single Photoproduction of Negative Pions from Neutrons by Linearly Polarized Photons in the Region of the First Pion-Nucleon Resonance

Study of pi- n and pi- C-12 Interactions Involving Strange Particles at the Momentum of 40-GeV/c

J/psi Particle Production by 70-GeV/c Protons

Observation of a Spin 4 Neutral Meson with 2-GeV Mass Decaying in pi0 pi0

Angular distributions of the asymmetry of the gamma p ---> p pi0 reaction with the gamma-quanta energies of 400, 450, 500, 550, 650 mev

Elastic 1 gev proton scattering on k-39 and ca-40 nuclei

Asymmetry of the cross section of gamma d ---> pi0 d reaction at photon energy of 350 mev

Transmission regeneration of neutral k-mesons on hydrogen in the momentum region 14-42 gev/c

Transmission regeneration of neutral k-mesons on hydrogen in the momentum region of 14-42 gev/c

ASYMMETRY MEASUREMENTS IN PION PHOTOPRODUCTION BY POLARIZED PHOTONS IN THE ENERGY RANGE FROM 250-MeV TO 600-MeV