Date

MUON SCATTERING AT 219-GEV AND THE PROTON STRUCTURE FUNCTIONS.

Gordon, B.A. ; Quirk, T.W. ; Anderson, H.L. ; et al.
Phys.Rev.Lett. 41 (1978) 615-618, 1978.
Inspire Record 132552 DOI 10.17182/hepdata.21001

Results on the protron structure function, F2, are presented for 0.3

1 data table

No description provided.


Partial, Total, and Resonance Production Cross-Sections for the Reactions pi+ p --> Four Prong Final States at 10.3-GeV/c

Kennedy, C.N. ; Zemany, P.D. ; Beaufays, J. ; et al.
Phys.Rev.D 17 (1978) 2888-2900, 1978.
Inspire Record 135353 DOI 10.17182/hepdata.24403

The major production channels of four-prong final states resulting from π+p interactions at a center-of-mass energy of 4.5 GeV are studied. In addition to total production cross sections, comprehensive listings of partial and resonance production cross sections are also given for each final state of interest. All final states, including nπ+π+π+π−, are found to exhibit copious resonance production.

2 data tables

PARTIAL CROSS SECTIONS FROM PI+ P --> PI+ P PI+ PI-.

PARTIAL CROSS SECTIONS FROM PI+ P --> PI+ P PI+ PI- PI0.


STUDY OF REACTIONS pi+ p ---> (rho0, omega) DELTA++ (1236) AT 10.3-GeV/c

Beaufays, J. ; Kennedy, C.N. ; Key, A.W. ; et al.
Phys.Rev.D 18 (1978) 27, 1978.
Inspire Record 6322 DOI 10.17182/hepdata.24331

Cross sections, differential cross sections, single and joint spin-density matrix elements are given for the reactions π+p→(ρ0, ω)Δ++ at 10.3 GeV/c. Correlations between the vector-meson and the Δ++ decay angular distributions are observed. A discussion of the results in terms of particle exchange, SU(3) symmetry, quark additivity, and the equal-phase hypothesis is presented. The amplitudes for the process π+p→ρ0Δ++ are extracted by a model-dependent analysis and compared with current theoretical predictions.

9 data tables

P-WAVE BREIT-WIGNER RESONANCES PLUS BACKGROUND USED WITH SLICE TECHNIQUE.

FROM RESONANCE OVERLAP REGION WITH BACKGROUND SUBTRACTED AND NORMALIZED TO TOTAL CROSS SECTION.

FROM RESONANCE OVERLAP REGION WITH BACKGROUND SUBTRACTED AND NORMALIZED TO TOTAL CROSS SECTION.

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Study of scaling in hadronic production of dimuons

Yoh, J.K. ; Herb, S.W. ; Hom, D.C. ; et al.
Phys.Rev.Lett. 41 (1978) 684, 1978.
Inspire Record 130804 DOI 10.17182/hepdata.3337

We present proton-nucleus dimuon-production cross sections for masses between 4 and 15 GeV, center-of-mass rapidities between -0.23 and 0.6 and incident energies of 200, 300, and 400 GeV. The data confirm scaling to the 20% level. The dependence of continuum 〈pT〉 on beam energy is also presented.

6 data tables

No description provided.

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Scaling properties of high mass symmetric hadron and pion pair production in proton - beryllium collisions

Jostlein, H. ; Engelmann, Roderich J. ; Fisk, R.J. ; et al.
Phys.Rev.Lett. 42 (1979) 146, 1979.
Inspire Record 132764 DOI 10.17182/hepdata.42603

We present measurements of the production symmetric high-mass hadron and pion pairs by protons of 200, 300, and 400 GeV, incident on a beryllium target. The two-particle invariant cross section for pion production can be described by the function E1E2d6σdp13dp23=(1.7×10−28)pt−8.4(1−xt)14 cm2/GeV4 (where pt is the mean pt of the two hadrons). Functions of the same form have been used in describing single-pion inclusive production. Equality of the exponents of pt in the two processes is observed, confirming the role of smearing contributions to single-hadron cross sections.

2 data tables

E*D3(SIG)/D3(P) is fitted by CONST*(1-XT)**POWER*PT**POWER.

E1*E2*D6(SIG)/D3(P1)/D3(P2) is fitted by CONST*(1-XT)**POWER*PT**POWER, where PT is (pt1 + pt2)/2.


Inclusive $\rho^0$ Production in $p p$ Collisions at the {CERN} {ISR}

The British-French-Scandinavian collaboration Albrow, M.G. ; Almehed, S. ; Booth, P.S.L. ; et al.
Nucl.Phys.B 155 (1979) 39-51, 1979.
Inspire Record 133360 DOI 10.17182/hepdata.34664

The inclusive production of ϱ 0 mesons in pp collisions has been measured at five c.m. energies from √ s = 23.6 to 63.0 GeV. The cross sections and the production spectra as a function of transverse momentum and rapidity are discussed.

2 data tables

No description provided.

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Hadron Production in Muon - Proton and Muon - Deuteron Collisions

Loomis, W.A. ; Gordon, B.A. ; Pipkin, F.M. ; et al.
Phys.Rev.D 19 (1979) 2543-2571, 1979.
Inspire Record 132759 DOI 10.17182/hepdata.24303

This paper reports measurements of the hadrons produced in the inelastic scattering of 147-GeV muons by protons and deuterons in an experiment carried out at Fermi National Accelerator Laboratory. Both the scattered muon and the hadrons were measured in a large spectrometer. Properties of the hadron spectra are presented for proton, deuteron, and neutron targets and compared with theoretical models and with hadron spectra from related processes. Emphasis is placed on the quark-parton model and the data are found to be in substantial agreement with it. The average transverse momentum of the hadrons with respect to the virtual photon direction shows no dependence on the muon scattering variables. The data display "jet behavior" of the inclusive hadrons comparable to that found in e+e− annihilations.

2 data tables

No description provided.

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Evidence for the Upsilon'' and a Search for New Narrow Resonances

Ueno, K. ; Brown, B.C. ; Brown, C.N. ; et al.
Phys.Rev.Lett. 42 (1979) 486-489, 1979.
Inspire Record 132766 DOI 10.17182/hepdata.42707

The production of the ϒ family in proton-nucleus collisions is clarified by a sixfold increase in statistics. Constraining ϒ,ϒ′ masses to those observed at DORIS we find the statistical significance of the ϒ′′ to be 11 standard deviations. The dependence of ϒ production on pt, y, and s is presented. Limits for other resonance production in the mass range 4-18 GeV are determined.

2 data tables

Cross section times branching ratio.

No description provided.


Polarization Parameters in Neutral Pion Photoproduction

Bussey, P.J. ; Raine, C. ; Rutherglen, J.G. ; et al.
Nucl.Phys.B 154 (1979) 492-502, 1979.
Inspire Record 140230 DOI 10.17182/hepdata.34681

The polarisation parameters Σ, P and T have been measured for the process γ p→ π 0 p in the photon energy range 1300–2100 MeV and c.m. angles between 30° and 110°, in an experiment with a polarised beam and polarised target. The results are compared with a recent theoretical analysis which fits data from threshold to 16 GeV. The new data are in general agreement with the analysis, but with some significant discrepancies in detail.

9 data tables

No description provided.

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Polarization Parameters in Positive Pion Photoproduction

Bussey, P.J. ; Raine, C. ; Rutherglen, J.G. ; et al.
Nucl.Phys.B 154 (1979) 205-225, 1979.
Inspire Record 140382 DOI 10.17182/hepdata.43832

Measurements have been made of the polarisation parameters Σ , T and P for the process γ p → π + n in the photon energy range 520–2250 MeV at c.m. angles between 30° and 120°. These data were obtained in a double polarisation experiment, using the polarised photon beam from the Daresbury electron synchrotron incident on a polarised proton target. The data are compared with predictions from current theoretical analyses.

2 data tables

No description provided.

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