Zichichi, A.
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Neutrino and anti-neutrinos Charged Current Inclusive Scattering in Iron in the Energy Range 20-GeV < Neutrino Energy < 300-GeV

Abramowicz, H. ; de Groot, J.G.H. ; Knobloch, J. ; et al.
Z.Phys.C 17 (1983) 283, 1983.
Inspire Record 182549 DOI 10.17182/hepdata.2213

Inclusive charged-current interactions of high-energy neutrinos and antineutrinos have been studied with high statistics in a counter experiment at the CERN Super Proton Synchrotron. The energy dependence of the total cross-sections, the longitudinal structure function, and the nucleon structure functionsF2,xF3, and\(\bar q^{\bar v} \) are determined from these data. The analysis of theQ2-dependence of the structure functions is used to test quantum chromodynamics, to determine the scale parameter Λ and the gluon distribution in the nucleon.

50 data tables
Table 1

ABSOLUTE FLUXES HAVE NOT BEEN MEASURED. NORMALISED TO OLD RESULTS.

Table 2

STUCTURE FUNCTIONS ARE EVALUATED ASSUMING R=SIG(L)/SIG(T)=0.1 AND M(W) IS INFINITE. NO CORRECTION FOR FERMI MOTION APPLIED. ERRORS ARE STATISTICAL AND SYSTEMATIC POINT-TO-POINT ERRORS. IN ADDITION OVER-ALL SCALE ERROR OF 6 PCT. FOR F2 , 8 PCT. FOR XF3.

Table 3

STUCTURE FUNCTIONS ARE EVALUATED ASSUMING R=SIG(L)/SIG(T)=0.1 AND M(W) IS INFINITE. NO CORRECTION FOR FERMI MOTION APPLIED. ERRORS ARE STATISTICAL AND SYSTEMATIC POINT-TO-POINT ERRORS. IN ADDITION OVER-ALL SCALE ERROR OF 6 PCT. FOR F2 , 8 PCT. FOR XF3.

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A Search for $\omega \phi$ and $\phi \phi$ Production in the Reactions $\gamma \gamma \to K^+ K^- \pi^+ \pi^- \pi^0$ and $\gamma \gamma \to 2 K^+ 2 K^-$

The ARGUS collaboration Albrecht, H. ; Bockmann, P. ; Glaser, R. ; et al.
Phys.Lett.B 210 (1988) 273-277, 1988.
Inspire Record 260828 DOI 10.17182/hepdata.29918

The reaction γγ→K + K − π + π − π 0 has been observed for the first time, using the ARGUS detector at the e + e − storage ring DORIS II at DESY. The cross section shows an enhancement for W γγ close to 3 GeV/ c 2 . Searches for γγ→ωφ and for γγ→φφ leading to this final state, as well as for γγ→φφ→2K + 2K − , have been performed. The derived upper limits for ωφ and φφ production are compatible with q q q q model predictions.

2 data tables
Table 1

TOPOLOGICAL CROSS SECTION.

Table 2

95 PCT CL UPPER LIMITS.


A Comparison of Charged Current Cross-sections and Structure Functions for Neutrino and Anti-neutrinos Beams on Hydrogen and Neon

The BEBC TST Neutrino collaboration Parker, M.A. ; Francois, T. ; Guy, J.G. ; et al.
Nucl.Phys.B 232 (1984) 1-20, 1984.
Inspire Record 192873 DOI 10.17182/hepdata.33899

Using BEBC equipped with a hydrogen-filled neon-surrounded track-sensitive target, the charged current cross sections and structure functions of hydrogen and neon targets traversed by the same neutrinos and antineutrinos are compared directly. The measured total cross-section ratios between hydrogen and neon allow precise total cross-section values for hydrogen to be inferred. Using this normalization, the ν and ν hydrogen data are combined and the quark distributions in free nucleons, parametrised as functions of ξ, are extracted. This free-nucleon parametrisation is then compared directly with the neon data in order to measure nuclear effects such as those recently reported by the EMC collaboration. Only small effects are seen, in excellent agreement with recent SLAC data in a more similar A and q 2 range.

3 data tables
Table 1

Measured charged current total cross section.

Table 2

Measured charged current total cross section.

Table 3

AVERAGE Q**2 IS 6.9GEV**2 FOR NU AND 4.3GEV**2 FOR ANU.


rivet Analysis
Study of the Process e+ e- ---> eta gamma in c.m. Energy Range 600-1380 MeV at CMD-2

The CMD-2 collaboration Akhmetshin, R.R. ; Anashkin, E.V. ; Aulchenko, V.M. ; et al.
Phys.Lett.B 509 (2001) 217-226, 2001.
Inspire Record 554522 DOI 10.17182/hepdata.27025

The cross section of the process e+ e- ---> eta gamma has been measured in the 600-1380 MeV c.m. energy range with the CMD-2 detector. The following branching ratios have been determined: B(rho ---> eta gamma) = (3.28 +- 0.37 +- 0.23) 10^{-4}, B(omega ---> eta gamma) = (5.10 +- 0.72 +- 0.34) 10^{-4}, B(phi --> eta gamma) = (1.287 +- 0.013 +- 0.063) 10^{-2}. Evidence for the rho'(1450) ---> eta gamma decay has been obtained for the first time.

1 data table
Table 1

The measured Born cross section for the ETA GAMMA final state.


Measurements of the a-Dependence of Deep Inelastic electron Scattering from Nuclei

Arnold, R.G. ; Bosted, Peter E. ; Chang, C.C. ; et al.
Phys.Rev.Lett. 52 (1984) 727, 1984.
Inspire Record 193846 DOI 10.17182/hepdata.20435

The deep-inelastic electron-scattering cross sections per nucleon σA for D, He, Be, C, A1, Ca, Fe, Ag, and Au were measured in the kinematic range 0.09<~x<~0.9 and 2<~Q2<~15 (GeV/c)2 with use of electrons with energies ranging from 8 to 24.5 GeV. The ratio σAσD is consistent with unity in the range 0.1<x<0.3. For 0.3<x<0.8, the ratio decreases logarithmically with atomic weight A, or linearly with average nuclear density. No Q2 dependence in the ratio was observed over the kinematic range of the data.

10 data tables
Table 1

THESE RATIOS ARE AVERAGED OVER Q**2.

Table 2

No description provided.

Table 3

No description provided.

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Nucleon Structure Functions from High-Energy Neutrino Interactions with Iron and QCD Results

MacFarlane, D. ; Purohit, M.V. ; Messner, R.L. ; et al.
Z.Phys.C 26 (1984) 1-12, 1984.
Inspire Record 195928 DOI 10.17182/hepdata.16212

Nucleon structure functions obtained from neutrino and anti-neutrino scattering on iron nuclei at high energies (Ev=30 to 250 GeV) are presented. These results are compared with the results of other lepton-nucleon scattering experiments. The structure functions are used to test the validity of the Gross-Llewellyn-smith sum rule, which measures the number of valence quarks in the nucleons, and to obtain leading and second order QCD fits.

19 data tables
Table 1

Measured charged current total cross section.

Table 2

No description provided.

Table 3

No description provided.

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Composition of Particles Emitted at Large $p_T$ and Medium Angles in $p p$, $d d$, and $\alpha \alpha$ Collisions at the {CERN} Intersecting Storage Rings

The Ames-Bologna-CERN-Dortmund-Heidelberg-LBL-Lund-Warsaw collaboration Breakstone, A. ; Claesson, G. ; Crawley, H.B. ; et al.
Z.Phys.C 30 (1986) 507, 1986.
Inspire Record 218607 DOI 10.17182/hepdata.15905

The relative yields of kaons and protons compared with the yield of pions at highpT and polar angles θ away from 90° (in the range from 10° to 45°) are presented forpp, dd, and αα interactions at a centre-of-mass energy\(\sqrt {s_{NN} }= 31\) GeV per nucleon-nucleon collision. The measured particle ratios depend on the atomic mass numberA of the beam particles and on θ. TheA dependence of the ratios becomes stronger for largerpT and is more pronounced at smaller polar angles.

4 data tables
Table 1

ERRORS ARE PURELY STATISTICAL.

Table 2

ERRORS ARE PURELY STATISTICAL.

Table 3

ERRORS ARE PURELY STATISTICAL.

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Measurement and analysis of the reaction gamma gamma ---> 3 pi+ 3 pi-

The JADE collaboration Pust, R. ; Olsson, J. ; Allison, J. ; et al.
Z.Phys.C 51 (1991) 531-540, 1991.
Inspire Record 314005 DOI 10.17182/hepdata.14926

The reactionγγ→3π+3π- has been studied usig the JADE detector at PETRA. The topological cross sectionσ(γγ→3π+3π-) was measured in the CM energy range 1.5–5.5 GeV. The production ofρ0,s was observed and the average number ofρ0,s per event measured. The contributions of the subprocessesγγ→ρ02π+2π-,γγ→ρ0ρ0π+2π- andγγ→ 3π+3π- (phase space) were studied and 95% C.L. upper limits for the cross sectionσ(γγ→ρ0ρ0π+π- determined. Finally the Bose-Einstein correlation for pairs of like signed pions was observed. A fit to a standard parametrization gave results consistent with other studies of this effect in pion systems.

4 data tables
Table 1

Topological cross section.

Table 2

Fractions of events for different final states resulting from the extended liklihood fit using incoherent weights.

Table 3

Fractions of events for different final states resulting from the extended liklihood fit using coherent weights.

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Multi-Pion Production Below 1.1-GeV by e+ e- Annihilation

Cosme, G. ; Courau, A. ; Dudelzak, B. ; et al.
Phys.Lett.B 63 (1976) 349-351, 1976.
Inspire Record 115717 DOI 10.17182/hepdata.27637

The production of multipion events by e + e − annihilation has been measured at centre of mass energies 915,990 and 1076 MeV. Both channels e + e − → π + π − π o and e + e − → π + π − π + π − have been analysed. An energy threshold effect analysed. An energy threshold effect around 919 MeV ( m ω + m π o ) has been evidenced for the π + π − π o π o channel and the cross section is consistent with the quasi two-body process e + e − → ωπ o . The cross section for π + π − π + π − is lower by an order of magnitude and increases with the energy.

2 data tables
Table 1

SYSTEMATIC ERROR INCLUDED. RADIATIVE EFFECT (<15 PCT) INCLUDED.

Table 2

MULTIHADRON PRODUCTION CROSS SECTION DEDUCED AS SUM OF FOUR PION CHANNELS.


rivet Analysis
Cross-section of the Reaction $e^+ e^- \to \pi^+ \pi^- \pi^+ \pi^-$ for Center-of-mass Energies From 890-{MeV} to 1100-{MeV}

Cordier, A. ; Delcourt, B. ; Eschstruth, P. ; et al.
Phys.Lett.B 81 (1979) 389-392, 1979.
Inspire Record 132828 DOI 10.17182/hepdata.27360

We present the results of a measurement of the cross section oof the reaction e + e − → π + π − π + π − from 890 to 1100 MeV in the center of mass, obtained with a magnetic detector at the Orsay Storage Ring ACO. With respect to previous experiments, the present one offers the possibility of reconstructing events with at least one constraint and his improved statistics. We find that our measurement of the cross section for e + e − → π + π − π + π − is compatible with quasi two-body production of π A 1 ( m A1 = 1.1 GeV, Γ A1 ∼ 0.2−0.3 GeV), through the ϱ and ϱ′(1600) intermediate states. We were able to states. We were able to determine the cross section of this reaction at the energy of the φ meson and consequently an upper limit on the branching ratio of φ → π + π − π + π − .

1 data table
Table 1

UPPER LIMIT FOR PHI --> 4PI.