HEPData Search

The absolute cross sections for the production of 11 C by 1.59 GeV and 4.19 GeV α-particles incident on natural carbon have been measured to be 46.4 ± 1.3 mb and 42.5 ± 1.1 mb respectively. These results, together with data reported at other energies, indicate that the C(α, X) 11 C cross section becomes approximately constant at a value of about 43 mb for energies above 3 GeV (750 MeV/n). A similar energy dependence is exhibited by the C(p, X) 11 C reaction whose cross section has been measured previously over an extensive energy range. The C(α, X) 11 C cross sections are found to be in good agreement with predictions of a semi-empirical model developed to describe nuclear fragmentation.

1 data table

Table 1

ALL SYSTEMATICAL ERRORS WERE INCLUDED INTO TABULATED ERRORS.

rivet Analysis
Dimuon Scaling Comparison at 44-{GeV} and 62-{GeV}

Antreasyan, D. ; Becker, U. ; Bellettini, G. ; et al.

Phys.Rev.Lett. 48 (1982) 302, 1982.

Inspire Record 168182 DOI 10.17182/hepdata.20610

Measurements of pp→μ+μ−+X at s=44 and 62 GeV are compared. The data are taken under identical conditions utilizing clean proton-proton collisions from the CERN intersecting storage rings and confirm scaling to 5%. The observed μ+μ− yield is a factor of 1.6±0.2 larger than estimated from a simple parton model but is consistent with QCD. The pT dependence of the muon pairs agrees well with expectations from QCD.

1 data table

Table 1

No description provided.

Experimental Study of Electroweak Parameters at {PETRA} Energies (12-{GeV} $< E_{CMS} <$ 36.7-{GeV})

The MARK-J collaboration Barber, D.P. ; Becker, U. ; Bei, G.D. ; et al.

Phys.Rev.Lett. 46 (1981) 1663, 1981.

Inspire Record 164675 DOI 10.17182/hepdata.3303

We have performed a high-statistics measurement of Bhabha scattering and of the production of hadrons in electron-positron annihilation at PETRA energies (12 GeV<~s<~36.7 GeV). Combining the results with measurements of μ+μ− and τ+τ− production enables us to compare our results with electroweak theory. We find sin2θw=0.27±0.08. This is in good agreement with the value obtained from neutrino experiments which were carried out in entirely different kinematic regions.

5 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

ASYMMETRY WAS USED.

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SPECTRA OF FAST PROTONS PRODUCED IN THE REACTION P A ---> P X AT THE ANGLE OF 62-MRAD

DEUTERON PRODUCTION AT 100-degree ANGLE FROM C-12, O-16, Cu, Pb NUCLEI IN INCLUSIVE REACTIONS pi- A ---> d X AT pi- MESON MOMENTA OF 1.5-GeV/c

PRODUCTION OF pi+ MESONS AT 118-degree ANGLE IN THE INCLUSIVE REACTION pi- A ---> pi+ X AT 1.5-GeV/c INCIDENT PION MOMENTA

PROTON PRODUCTION AT 110-degree ANGLE FROM C-12, O-16, Cu, Pb IN INCLUSIVE REACTIONS pi- A ---> p X AT 1.5-GeV/c pi- MESON MOMENTA

MEASUREMENT OF TOTAL CROSS-SECTIONS OF THE P N ---> P P PI- REACTION AT 500-MEV - 1000-MEV ENERGIES OF DIBARYON RESONANCES. (IN RUSSIAN)

CHARGED AND NEUTRAL PARTICLES OF LEADING ENERGIES IN INTERACTIONS OF PI- MESONS WITH PHOTOEMULSION NUCLEI AT ENERGIES OF 50-GEV AND 200-GEV. (IN RUSSIAN)

USE OF PI P ---> PI PI N REACTIONS TO STUDY PI PI SCATTERING IN THE ELASTIC INTERACTION REGION

THE C (ALPHA, X) C-11 CROSS-SECTIONS AT 1.59-GEV AND 4.19-GEV

rivet Analysis
Dimuon Scaling Comparison at 44-{GeV} and 62-{GeV}

Experimental Study of Electroweak Parameters at {PETRA} Energies (12-{GeV} $< E_{CMS} <$ 36.7-{GeV})