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Search for Charmed Particle Production in 15-GeV/c pi+ p Interactions

Baltay, C. ; Cautis, C.V. ; Cohen, Daniel H. ; et al.
Phys.Rev.Lett. 34 (1975) 1118, 1975.
Inspire Record 2041 DOI 10.17182/hepdata.21924

A search for the production of charmed particles in 15-BeV/c π+p interactions has been carried out. The search was sensitive to charmed particles in the 1.5 to 4.0 BeV mass range, with lifetimes ≲10−11 sec, decaying into a strange particle with up to eight additional pions. No evidence for the production of such particles was found.

1 data table
Table 1

No description provided.


Photoproduction of phi Mesons at Small t Values

Behrend, H.-J. ; Bodenkamp, J. ; Hesse, W.P. ; et al.
Phys.Lett.B 56 (1975) 408-412, 1975.
Inspire Record 98876 DOI 10.17182/hepdata.27859

The reaction γ + p → Φ + p has been measured using a spark chamber spectrometer and a tagged photon beam in the energy range from 4.6 to 6.7 GeV. Approximately 3500 photoproduced elastic Φ-events have been collected in the t -range between t min and t = −0.4 (GeV/ c ) 2 . Cross sections and t -distributions are presented.

1 data table
Table 1

NO MARKED ENERGY DEPENDENCE.


Inclusive Production of Y* Resonances in K- p Interactions at 14.3-GeV/c

Bardadin-Otwinowska, M. ; Barloutaud, R. ; Borg, A. ; et al.
Nucl.Phys.B 98 (1975) 418-428, 1975.
Inspire Record 99415 DOI 10.17182/hepdata.31900

The inclusive production of Σ + (1385), Σ − (1385), Λ (1405) and Λ (1523) in K − p interactions at 14.3 GeV/ c is studied. Cross sections are presented and the x dependence of the invariant cross sections is discussed. The density matrices for production of the spin- 3 2 resonances at small momentum transfer to the target are consistent with spin-0 exchange.

2 data tables
Table 1

No description provided.

Table 2

No description provided.


Analysis of Two Prong Events in anti-Proton-Proton Interactions at 5.7-GeV/c

Braun, Henri ; Gerber, J.-P. ; Maurer, G. ; et al.
Nucl.Phys.B 95 (1975) 481-502, 1975.
Inspire Record 2106 DOI 10.17182/hepdata.31929

A study of elastic scattering, one-pion production and annihilation reactions in p p interactions at 5.7 GeV/ c was carried out, from the two-prong events, obtained in the hydrogen bubble chamber exposed at CERN.

2 data tables
Table 1

NUMBER OF EVENTS FOR -T<0.03 GEV**2 CALCULATED BY EXTRAPOLATION.

Table 2

No description provided.


Measurement of the Real Part of the Forward Amplitude in anti-p p Elastic Scattering

Jenni, P. ; Baillon, P. ; Bricman, C. ; et al.
Nucl.Phys.B 94 (1975) 1-20, 1975.
Inspire Record 99005 DOI 10.17182/hepdata.31973

The differential cross sections of the elastic p p reaction have been measured at 1.2, 1.4, 1.8 and 2.6 GeV/ c incident p momentum. The measurements have been performed at the CERN PS using a system of multiwire proportional chambers. The angular region covers scattering angles from 0 to ∼200 mrad. Interference effects between the Coulomb and the nuclear amplitudes are used to derive the ratio of the real to imaginary part of the forward nuclear amplitude. These ratios are compared with theoretical predictions.

6 data tables
Table 1

'MS'. 'TBIN'.

Table 2

'MS'. 'TBIN'.

Table 3

'MS'. 'TBIN'.

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Neutral K, Lambda and anti-Lambda Production in K- p and K+ p Interactions at 32-GeV/c

The French-Soviet & CERN-Soviet collaborations Beilliere, P. ; Cochet, Christian ; Dumont, J J ; et al.
Nucl.Phys.B 90 (1975) 20-34, 1975.
Inspire Record 2057 DOI 10.17182/hepdata.32067

Inclusive cross sections and one-particle inclusive spectra are given for neutral K, Λ and Λ produced in K − p and K + p interactions at 32 GeV/ c in the 4.5 m Mirabelle hydrogen bubble chamber at the Serpukhov accelerator. Cross sections for associated production are also given, and the energy dependences of the cross sections and of the x distributions in the central and in the fragmentation regions are discussed.

2 data tables
Table 1

No description provided.

Table 2

No description provided.


Neutron Total Cross-Sections on Nuclei at Fermilab Energies

Ramana Murthy, P.V. ; Ayre, Cyril A. ; Gustafson, H.Richard ; et al.
Nucl.Phys.B 92 (1975) 269-308, 1975.
Inspire Record 2076 DOI 10.17182/hepdata.32056

We have measured total cross sections for neutrons on protons, deuteriom, beryllium, carbon, aluminium, iron, copper, cadmium, tungsten, lead, and uranium for momenta between 30 and 300 GeV/ c . The measurements were carried out in a small-angle neutral beam at Fermilab. Typical accuracy of the data is 0.5 to 1%. The cross sections are consistent with an A 0.77±0.01 dependence over the entire momentum range. The cross sections are compared with theoretical predictions. Agreement is found only if inelastic screening is included. Nuclear radii obtained from our data are in good agreement with previous determinations.

11 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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Production of gamma rays in K- p and K+ p Interactions at 32-GeV/c

The French-Soviet & CERN-Soviet collaborations Beilliere, P. ; Cochet, Christian ; Dumont, J J ; et al.
Nucl.Phys.B 91 (1975) 219-231, 1975.
Inspire Record 2852 DOI 10.17182/hepdata.6709

Inclusive cross sections and longitudinal momentum distributions are presented for γ rays produced in K − p and K + p interactions at 32 GeV/c in the 4.5 m Mirabelle hydrogen bubble chamber at the Serpukhov accelerator. The average longitudinal and transverse momentum of neutral pions and the average π 0 multiplicity ▪ 〈 n π 0〉 are estimated. It is found that 〈 n π 0〉 is an increasing function of the number of charged prongs.

2 data tables
Table 1

No description provided.

Table 2

No description provided.


Study of Vector Meson Baryon Resonance Production in pi+ p Interactions at 7.1-GeV/c

Chung, S.U. ; Protopopescu, S.D. ; Eisner, R.L. ; et al.
Phys.Rev.D 12 (1975) 693, 1975.
Inspire Record 99147 DOI 10.17182/hepdata.48154

From a large-statistics π+p experiment at 7.1 GeV/c, data are presented on the reactions π+p→ρ0Δ++(1238) and π+p→ωΔ++(1238). Cross sections, differential cross sections, and vector-meson single-density-matrix elements are presented and a general comparison of the production properties of the two reactions is given. In addition to (ρ,ω)Δ++(1238) production there is also strong evidence for production of a π+p enhancement with mass ∼ 1880 MeV, Γ∼200 MeV, and J≥72 produced in association with the ρ and ω resonances. Detailed properties of this structure are presented and its production mechanism is compared with that of the corresponding Δ(1238) reactions. This state is also observed in the reaction K+p→K*0(890)Δ++(1880) at 12.0 GeV/c, for which data are also presented.

15 data tables
Table 1

STATISTICAL ERRORS ONLY.

Table 2

No description provided.

Table 3

JACKSON FRAME.

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Neutron-Proton Forward Elastic Scattering from 58-MeV to 391-MeV

Bersbach, A.J. ; Mischke, R.E. ; Devlin, T.J. ;
Phys.Rev.D 13 (1976) 535, 1976.
Inspire Record 99441 DOI 10.17182/hepdata.24700

Elastic neutron-proton differential cross sections have been measured between 58 and 391 MeV incident neutron energy at angles in the center-of-mass system from 11° to 54°. Neutrons were scattered from a liquid-H2 target and detected in liquid scintillators. The incident energy of each detected neutron was determined from its time of flight. The data were normalized by placing the detector in the beam. The results are generally consistent with previous data and with the predictions of phase-shift analysis but are of improved accuracy.

20 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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