Akopian, G.G.
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Polarization in Charge Exchange Reaction $\pi^- p \to \pi^0 n$ in Small Momentum Transfer Range at 40-{GeV}/$c$

Apokin, V.D. ; Avvakumov, I.A. ; Bagaturiya, Yu.Sh. ; et al.
Experientia Suppl. 38 (1981) 554, 1981.
Inspire Record 154047 DOI 10.17182/hepdata.11048

None

2 data tables
Table 1

AVERAGE TARGET POLARIZATION WAS 76 +- 3 PCT.

Table 2

No description provided.


INCLUSIVE MUON PRODUCTION AT PETRA ENERGIES

The Pluto collaboration Berger, Christoph ; Genzel, H. ; Grigull, R. ; et al.
Phys.Rev.Lett. 45 (1980) 1533-1537, 1980.
Inspire Record 153812 DOI 10.17182/hepdata.20692

In this Letter, a measurement of inclusive muon production (pμ>2 GeV/c) in e+e− annihilation into hadrons at center-of-mass energies from s=12 to 31.6 GeV is reported. The results agree with the expected semileptonic decays from charmed and bottom mesons.

2 data tables
Table 1

MUONS PER HADRONIC EVENT.

Table 2

INVARIANT CROSS SECTION, ASSUMING HADRONIC CROSS SECTION HAS R VALUE OF 3.9 +- 0.5.


Measurement of the Reaction $e^+ e^- \to \gamma \gamma$ at {CMS} Energies From 9.4-{GeV} to 31.6-{GeV}

The PLUTO collaboration Berger, Christoph ; Genzel, H. ; Grigull, R. ; et al.
Phys.Lett.B 94 (1980) 87-90, 1980.
Inspire Record 153120 DOI 10.17182/hepdata.27174

The differential cross section for the reaction e + e − → γγ has been measured in the CMS energy range between 9.4 and 31.6 GeV. The results are found to be in agreement with the predictions of quantum electrodynamics up to momentum transfers- q 2 of 900 GeV 2 . The data set lower limits of about 40 GeV on QED cut-off parameters. We have searched for the decay υ (9.46) → γγ and obtain an upper limit Γ ( υ → γγ )/ Γ ( υ → all) < 1.4% (95% c.l.).

1 data table
Table 1

No description provided.


Test of {QED} in the Reactions $e^+ e^- \to e^+ e^-$ and $e^+ e^- \to \mu^+ \mu^-$ at {CMS} Energies From 9.4-{GeV} to 31.6-{GeV}

The PLUTO collaboration Berger, Christoph ; Genzel, H. ; Grigull, R. ; et al.
Z.Phys.C 4 (1980) 269, 1980.
Inspire Record 152289 DOI 10.17182/hepdata.15600

None

2 data tables
Table 1

No description provided.

Table 2

No description provided.


PHOTOPRODUCTION OF PI- MESONS ON NEUTRONS INDUCED BY POLARIZED PHOTONS IN THE ENERGY INTERVAL 0.9-GEV - 1.65-GEV. (IN RUSSIAN)

Abramian, L.O. ; Aganyants, Aleksandr O. ; Adamian, F.V. ; et al.
Yad.Fiz. 32 (1980) 133-140, 1980.
Inspire Record 159786 DOI 10.17182/hepdata.18933

None

6 data tables
Table 1

Axis error includes +- 10./10. contribution (DUE TO BEAM POLARIZATION UNCERTAINTY).

Table 2

D(SIG)/D(OMEGA)=(D(SIG(O))/D(OMEGA)+D(SIG(C))/D(OMEGA))/2, WHERE (O) AND (C) DENOTES GAMMA POLARIZATION ORTHOGONAL AND COPLANAR TO THE REACTION PLANE.

Table 3

Axis error includes +- 10./10. contribution (DUE TO BEAM POLARIZATION UNCERTAINTY).

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ASYMMETRY OF THE REACTION CROSS-SECTION FOR PI+ MESON PHOTOPRODUCTION ON HYDROGEN INDUCED BY POLARIZED PHOTONS IN THE RESONANCE ENERGY REGION. (IN RUSSIAN)

Abramian, L.O. ; Aganyants, Aleksandr O. ; Adamian, F.V. ; et al.
Yad.Fiz. 32 (1980) 128-132, 1980.
Inspire Record 159785 DOI 10.17182/hepdata.18977

None

2 data tables
Table 1

Axis error includes +- 10/10 contribution (DUE TO BEAM POLARIZATION UNCERTAINTY).

Table 2

Axis error includes +- 10/10 contribution (DUE TO BEAM POLARIZATION UNCERTAINTY).


rivet Analysis
Search for Narrow Resonances in $e^+ e^-$ Annihilation at {PETRA}

The PLUTO collaboration Berger, Christoph ; Genzel, H. ; Grigull, R. ; et al.
Phys.Lett.B 91 (1980) 148-151, 1980.
Inspire Record 152291 DOI 10.17182/hepdata.27236

We have performed a search for narrow resonances in the center of mass energy range from 29.90 to 31.46 GeV using the e + e − storage ring PETRA at DESY. We present the total cross section for hadron production and an upper limit for resonance production, indicating that no bound state of charge- 2 3 quarks exists in this energy range.

2 data tables
Table 1

AVERAGE VALUE OF R OVER THE SCAN REGION.

Table 2

THESE MEASUREMENTS COMBINED WITH PREVIOUS DATA AT 30.0 AND 31.6 GEV REPORTED IN CH. BERGER ET AL., PL 86B, 413 (1979).


Absolute electron Proton Cross-Sections at Low Momentum Transfer Measured with a High Pressure Gas Target System

Simon, G.G. ; Schmitt, C. ; Borkowski, F. ; et al.
Nucl.Phys.A 333 (1980) 381-391, 1980.
Inspire Record 157164 DOI 10.17182/hepdata.37069

Absolute differential cross sections for elastic electron-proton scattering have been measured in a four-momentum transfer range up to 1.4 fm −2 . Using a high pressure gas target system, we have obtained highly accurate data with a small normalization error of 0.5%. The electromagnetic form factors G E and G M have been extracted and the rms charge radius has been determined to be 〈r 2 E 〉 p 1 2 = 0.862±0.012 fm . The shape of the isovector spectral function near threshold shows a significant non-resonant contribution of the two-pion state. This enhancement is so strong that the derivative at q 2 = 0 differs considerably from the usual vector meson dominance model value. This result is in good agreement with theoretical predictions.

1 data table
Table 1

No description provided.


MULTIPLICITY OF PI- MESONS IN INELASTIC INTERACTIONS OF PROTONS WITH NUCLEI OF C AND TA IN THE MOMENTUM INTERVAL 2-GEV/C 10-GEV/C. (IN RUSSIAN)

Baatar, Ts. ; Gasparian, A.P. ; Gafurov, G.G. ; et al.
Yad.Fiz. 32 (1980) 1372-1378, 1980.
Inspire Record 159805 DOI 10.17182/hepdata.39915

None

3 data tables
Table 1

MULT NORMALIZED ON INELASTIC EVENTS IN A MODEL DEPENDENT FASION. LOOP-VER.

Table 2

MULT IN YN ARE NORMYLIZED ON EVENTS WITH AT LEAST ONE CHARGED-.

Table 3

MULT AND MULT2 IN THIS TABLE NORMALIZED ON EVENT VITH AT LEAST ONE CHARGED- IN THE FINAL STATE.


MEASUREMENT OF DEPOLARIZATION PARAMETERS D IN CHARGE EXCHANGE n p SCATTERING AT 600-MeV

Bagaturiya, Yu.Sh. ; Kazarinov, Yu.M. ; Kazarinov, M.Yu. ; et al.
Sov.J.Nucl.Phys. 33 (1981) 659, 1981.
Inspire Record 160829 DOI 10.17182/hepdata.9878

None

4 data tables
Table 1

DATA AVERAGED FOR TWO DIRECTIONS OF TARGET POLARIZATION.

Table 2

No description provided.

Table 3

No description provided.

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