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PHASE SHIFT ANALYSIS OF pi+ p SCATTERING IN THE REGION 194-MeV - 600-MeV

Abaev, V.V. ; Kruglov, S.P. ; Nichitiu, F. ;

Z.Phys.A 322 (1985) 603-610, 1985.

Inspire Record 201692 DOI 10.17182/hepdata.38008

An energy-independent phase-shift analysis ofπ+p-scattering has been carried out at 16 energies in the region 194–600 MeV. The new data on elastic polarization, obtained in LNPI up to 1983, were included.

18 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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SEARCH FOR DELTA0 (1232) AND DELTA++ (1232) ISOBARS IN NEUTRINO INTERACTION WITH NEON NUCLEUS

Ammosov, V.V. ; Burtovoy, V.S. ; Gapienko, V.A. ; et al.

JETP Lett. 40 (1984) 1041, 1984.

Inspire Record 201833 DOI 10.17182/hepdata.40945

None

2 data tables

Table 1

No description provided.

Table 2

No description provided.

Tests of QED at 29-GeV Center-Of-Mass Energy

Bender, D. ; Derrick, M. ; Fernandez, E. ; et al.

Phys.Rev.D 30 (1984) 515, 1984.

Inspire Record 199464 DOI 10.17182/hepdata.23593

During the initial data run with the High Resolution Spectrometer (HRS) at SLAC PEP, an integrated luminosity of 19.6 pb−1 at a center-of-mass energy of 29 GeV was accumulated. The data on Bhabha scattering and muon pair production are compared with the predictions of QED and the standard model of electroweak interactions. The measured forward-backward charge asymmetry in the angular distribution of muon pairs is -8.4%±4.3%. A comparison between the data and theoretical predictions places limits on alternative descriptions of leptons and their interactions. The existence of heavy electronlike or photonlike objects that alter the structure of the QED vertices or modify the propagator are studied in terms of the QED cutoff parameters. The Bhabha-scattering results give a lower limit on a massive photon and upper limits on the effective size of the electron of Λ+>121 GeV and Λ−>118 GeV at the 95% confidence level. Muon pair production yields Λ+>172 GeV and Λ−>172 GeV. If electrons have substructure, the magnitude and character of the couplings of the leptonic constituents affects the Bhabha-scattering angular distributions to such an extent that limits on the order of a TeV can be extracted on the effective interaction length of the components. For models in which the constituents interact with vector couplings of strength g24π∼1, the energy scale ΛVV for the contact interaction is measured to be greater than 1419.0 GeV at the 95% confidence level. We set limits on the production of supersymmetric scalar electrons through s-channel single-photon annihilation and t-channel inelastic scattering. Using events with two noncollinear electrons and no other charged or observed neutral particles in the final state, we see one event which is consistent with a simple supersymmetric model but which is also consistent with QED. This allows us to exclude the scalar electron to 95% confidence level in the mass range 1.8 to 14.2 GeV/c2.

3 data tables

Table 1

Comparison of Bhabhas with QED.

Table 2

Muon angular distributions.

Table 3

Forward-backward asymmetry from full angular range.

STUDY OF CHARMED STRANGE VECTOR MESON PRODUCTION BY ANTI-NEUTRINOS

Asratian, A.E. ; Fedotov, A.V. ; Gorichev, P.A. ; et al.

Moscow Inst. Theor. Exp. Phys. Gkae - ITEF-84-099 (84,REC.AUG.) 7p, 1984.

Inspire Record 210786 DOI 10.17182/hepdata.40174

None

1 data table

Table 1

ERROR DUE TO ERROR IN BRANCHING VALUE IS 0.008.

HIGHER TWIST EFFECTS IN SEMIINCLUSIVE ANTI-NEUTRINO N ---> mu+ h- X REACTIONS

Ammosov, V.V. ; Asratian, A.E. ; Denisov, A.G. ; et al.

JETP Lett. 39 (1984) 537, 1984.

Inspire Record 200138 DOI 10.17182/hepdata.40969

None

6 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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TOTAL ANTI-NEUTRINOS NUCLEON CHARGED CURRENT CROSS-SECTION IN THE ENERGY RANGE 10-GEV - 50-GEV

Asratian, A.E. ; Efremenko, V.I. ; Fedotov, A.V. ; et al.

Phys.Lett.B 137 (1984) 122-124, 1984.

Inspire Record 203433 DOI 10.17182/hepdata.30593

The total v μ N charged current cross section in the energy interval 10–50 GeV is unfolded from 15' bubble chamber antineutrino data. The method is to isolate the quasielastic events and determine their relative contribution to the overall charged current sample. The scale parameter is found to be (0.29 ± 0.03) × 10 −38 cm 2 GeV −1 . Relevance of the method for neutrino oscillation studies is discussed.

3 data tables

Table 1

Measured charged current total cross section.

Table 2

Measured charged current total cross section.

Table 3

Measured charged current total cross section.

NEUTRAL STRANGE PARTICLE PRODUCTION IN ANTI-NEUTRINOS INDUCED NEUTRAL CURRENT INTERACTIONS

Asratian, A.E. ; Efremenko, V.I. ; Fedotov, A.V. ; et al.

Phys.Lett.B 140 (1984) 127-129, 1984.

Inspire Record 200832 DOI 10.17182/hepdata.10145

The study of neutral strange particle production in antineutrino-induced neutral current interactions is presented. The total multiplicity of neutral strange particles and the K 0 multiplicity in the current fragmentation region ( z >0.3) are used to estimate in two ways the coupling strength of the weak neutral current to the strange quark.

4 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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