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Experimental Test of Electroweak Effects at {PETRA} Energies

The PLUTO collaboration Berger, Christoph ; Genzel, H. ; Grigull, R. ; et al.

Z.Phys.C 7 (1981) 289, 1981.

Inspire Record 156660 DOI 10.17182/hepdata.13818

The differential cross sections for Bhabha scattering and μ pair production, and the total τ pair cross section as measured by the PLUTO detector at PETRA, have been analyzed to extract information on the weak interaction of leptons. The data are compared with unified gauge theories. Since the observed electroweak effects are still consistent with zero (within errors) we can set experimental limits on neutral current parameters atQ2 values of 950 GeV2. In the framework of the standard SU(2)×U(1) model we find sin2Θw<0.52(95% c.l.). In the context of general singleZo models we can excludeZo masses of less than 40 GeV.

2 data tables

Table 1

No description provided.

Table 2

No description provided.

Low Momentum K+ d Scattering

Glasser, R.G. ; Snow, G.A. ; Trevvett, D. ; et al.

Phys.Rev.D 15 (1977) 1200-1214, 1977.

Inspire Record 124116 DOI 10.17182/hepdata.24651

The differential cross sections for K+d coherent, breakup, and charge-exchange scattering have been measured at several momenta in the interval 250-600 MeV/c. The data have been fitted using a partial-wave analysis. Assuming an s-wave description of I=1 scattering and using data from the coherent and charge-exchange channels, a description of I=0 K+−N scattering by a combination of s and p waves in a simple single-scattering impulse model has been attempted. The phase shifts obtained are unique up to the Fermi-Yang ambiguity, which can be removed by using existing polarization results at 600 MeV/c.

8 data tables

Table 1

COHERENT SCATTERING DIFFERENTIAL CROSS SECTION IN THE LABORATORY FRAME.

Table 2

COHERENT SCATTERING DIFFERENTIAL CROSS SECTION IN THE LABORATORY FRAME.

Table 3

COHERENT SCATTERING DIFFERENTIAL CROSS SECTION IN THE LABORATORY FRAME.

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Measurements of the Polarization Parameter p, and the Differential Cross-Section, for pi- p --> pi0 n in the Resonance Region

Brown, Robert M. ; Clark, A.G. ; Davies, J.K. ; et al.

75-89, 1976.

Inspire Record 116148 DOI 10.17182/hepdata.76441

None

22 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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K+- proton scattering from 200 to 600 MeV/c

Burnstein, R.A. ; LeFebvre, J.J. ; Petersen, D.V. ; et al.

Phys.Rev.D 10 (1974) 2767-2777, 1974.

Inspire Record 97215 DOI 10.17182/hepdata.24945

The differential cross section for K+p elastic scattering has been measured at several momenta in the interval 200-600 MeV/c within a hydrogen bubble chamber. The data have been fitted with a partial-wave analysis. We obtain solutions which are dominated over the entire momentum range by s-wave scattering, with constructive interference between the nuclear and Coulomb scattering. The effective-range approximation with only s waves yields a K+p scattering length a=−0.314±0.007 F and an effective range r0=0.36±0.007 F. The measured total inelastic cross section at 588 MeV/c is 11−5+9 μb.

5 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.