Deep Inelastic Scattering
DSIG/DQ**2
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Experimental Test of the {PCAC} Hypothesis in Charged Current Neutrino and Anti-neutrino Interactions on Protons

The Birmingham-CERN-London-Munich-Oxford-London & WA21 collaborations Jones, G.T. ; Jones, R.W.L. ; Kennedy, B.W. ; et al.
Z.Phys.C 37 (1987) 25-38, 1987.
Inspire Record 248866 DOI 10.17182/hepdata.15696

Data obtained with the bubble chamber BEBC at CERN are used for the first significant test of Adler's prediction for the neutrino and antineutrino-proton scattering cross sections at vanishing four-momentum transfer squaredQ2. An Extended Vector Meson Dominance Model (EVDM) is applied to extrapolate Adler's prediction to experimentally accessible values ofQ2. The data show good agreement with Adler's prediction forQ2→0 thus confirming the PCAC hypothesis in the kinematical region of high leptonic energy transfer ν>2 GeV. The good agreement of the data with the theoretical predictions also at higherQ2, where the EVDM terms are dominant, also supports this model. However, an EVDM calculation without PCAC is clearly ruled out by the data.

4 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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Production of Charmed Particles in 250-GeV mu+ - Iron Interactions

The European Muon collaboration Aubert, J.J. ; Bassompierre, G. ; Becks, K.H. ; et al.
Nucl.Phys.B 213 (1983) 31-64, 1983.
Inspire Record 180921 DOI 10.17182/hepdata.46965

Dimuon and trimuon events produced by the interaction of 250 GeV muons in an iron target have been studied and are shown to originate predominantly from charm production. The data are used to measure the contribution of charm to the nucleon structure function F 2 . The cross sections for real photoproduction ( Q 2 =0) of charm in the current fragmentation region are derived as a function of photon energy and are found to be ∼0.6% of the total, hadronic photoproduction cross section in this energy range. The measured cross sections are found to be well represented by the photon-gluon fusion model. The charmed quark fragmentation function is obtained by using this model to fit the measured decay muon energy distribution and is found to be well represented by exp(1.6±1.6) Z . The data are used to study the momentum distribution of the gluons in the nucleon. An upper limit of 1.4% (90% confidence level) is set on the branching ratio D→ μν and a model-dependent upper limit on the branching ratio F→ μν is derived.

9 data tables
Table 1

The charm contribution to the nucleon structure function from the dimuon data.

Table 2

No description provided.

Table 3

No description provided.

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INELASTIC MUON INTERACTIONS AT 32-GeV/c WITH NUCLEI IN PHOTOEMULSION AT Q**2 < 1-GeV/c**2, nu < 2-GeV. INTERACTION CROSS-SECTIONS

Kolganova, E.D. ; Rabin, N.V. ;
Yad.Fiz. 35 (1982) 1474, 1982.
Inspire Record 156458 DOI 10.17182/hepdata.40263

None

2 data tables
Table 1

Axis error includes +- 0.0/0.0 contribution (?////).

Table 2

Axis error includes +- 0.0/0.0 contribution (?////).