Andrade Aldana, D.
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Limit on the B ---> u Coupling from Semileptonic B Decay

The CLEO collaboration Chen, A. ; Goldberg, M. ; Horwitz, N. ; et al.
Phys.Rev.Lett. 52 (1984) 1084, 1984.
Inspire Record 199380 DOI 10.17182/hepdata.20474

We have used the momentum spectrum of leptons produced in semileptonic B-meson decays to set a 90%-confidence-level upper limit on Γ(b→ulν)Γ(b→clν) of 4%. We also measure the semileptonic branching fractions of the B meson to be (12.0±0.7±0.5)% for electrons and (10.8±0.6±1.0)% for muons.

2 data tables
Table 1

No description provided.

Table 2

No description provided.


Measurements of the Spin Spin Correlation Parameter C(ss) = (S,s:o,o) at 487-{MeV}, 639-{MeV} and 791-{MeV}

Ditzler, W.R. ; Hill, D. ; Imai, K. ; et al.
Phys.Rev.D 29 (1984) 2137, 1984.
Inspire Record 201499 DOI 10.17182/hepdata.23771

The spin-spin correlation parameter CSS=(S,S;0,0) has been measured for p−p elastic scattering over a large angular range. The data are particularly useful in checking currently available phase-shift solutions.

3 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.


CUMULATIVE HADRON PROPERTIES IN P C INTERACTIONS AT 10-GEV/C, ACCOMPANIED BY THE EMISSION OF CUMULATIVE PROTONS OR PIONS. (IN RUSSIAN)

Agakishiev, G.N. ; Armutliisky, D. ; Akhababian, N.O. ; et al.
Dubna Jinr - 84-235 (84,REC.JUN.) 8p, 1984.
Inspire Record 205301 DOI 10.17182/hepdata.9907

None

14 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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EVIDENCE AGAINST THE S MESON

Clough, A.S. ; Beard, C.I. ; Bugg, D.V. ; et al.
Phys.Lett.B 146 (1984) 299-302, 1984.
Inspire Record 209024 DOI 10.17182/hepdata.30494

Measurements are reported of p̄p total cross sections from 388 to 599 MeV/ c in small momentum steps. Statistical errors are typically ±0.4%and the normalisation uncertainty is ±0.7%. There is no evidence for the “S-meson”.

2 data tables
Table 1

DATA TAKEN WITH 8.33 CM LH2 TARGET.

Table 2

DATA TAKEN WITH 1.17 CM LH2 TARGET.


DETERMINATION OF THE NEUTRAL TO CHARGED CURRENT CROSS-SECTION RATIO FOR ANTI-NEUTRINOS INTERACTIONS ON PROTONS

The BEBC TST NEUTRINO collaboration Moreels, J. ; Van Doninck, W. ; Alamatsaz, H. ; et al.
Phys.Lett.B 138 (1984) 230-234, 1984.
Inspire Record 204297 DOI 10.17182/hepdata.30573

An exposure of BEBC equipped with the hydrogen-filled TST to the v μ wide band beam at the CERN SPS has been used to study v μ interactions on free protons. About neutral induced interactions have been observed inside the hydrogen and separated into charged current, neutral current and neutral hadron interactions using a multivariate discriminant analysis based on the kinematics of the events. The neutral to charged current cross-section ratio has been determined to be R p v = 0.33 ± 0.04 . When combined with the value of R p v previously determined in the same experiment, the result is compatible with the prediction of the standard SU (2) × U (1) model for sin 2 θ W = 0.24 −0.08 +0.06 and ρ = 1.07 −0.08 +0.06 . Fixing the parameter ρ = 1 yields sin 2 θ W = 0.18 ± 0.04.

1 data table
Table 1

No description provided.


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.


Evidence for Local Compensation of Baryon Number in $e^+ e^-$ Annihilation

The TASSO collaboration Althoff, M. ; Braunschweig, W. ; Kirschfink, F.J. ; et al.
Phys.Lett.B 139 (1984) 126-132, 1984.
Inspire Record 199469 DOI 10.17182/hepdata.27109

We have studied at CM energies of 14, 22 and 30–36.7 GeV e + e − annihilation events in which the hadronic final state contains both a proton and an antiproton in the momentum range 1.0 < p < GeV/ c . We find that such pairs are produced predominantly in the same jet and conclude that baryon-antibaryon production is dominated by a mechanism involving local compensation of baryon number.

2 data tables
Table 1

BACKGROUND SUBTRACTED DATA.

Table 2

BACKGROUND SUBTRACTED DATA.


FRAGMENTATION IN NEUTRINO AND ANTI-NEUTRINOS CHARGED CURRENT INTERACTIONS ON PROTON AND NEUTRON

The AMSTERDAM-BERGEN-BOLOGNA-PADUA-PISA-SACLAY-TURIN collaboration Allasia, D. ; Angelini, C. ; Baldini, A. ; et al.
Z.Phys.C 24 (1984) 119-131, 1984.
Inspire Record 207322 DOI 10.17182/hepdata.16217

Some experimental properties of the charged hadronic fragments are compared for νp, νn,\(\bar vp\) and\(\bar vn\) interactions: multiplicities of forward and backward going particles,xF distributions for pions, fragmentation functions and theirQ2 andW2 dependence. The results are compared with the predictions of the Lund fragmentation model.

1 data table
Table 1

No description provided.


ASSOCIATED pi0 PRODUCTION IN EVENTS WITH A PARTICLE OF HIGH TRANSVERSE MOMENTUM AT S**(1/2) = 63-GeV

The CERN-Dortmund-Heidelberg-Warsaw collaboration Doroba, K. ; Drijard, D. ; Fischer, H.G. ; et al.
Z.Phys.C 24 (1984) 31, 1984.
Inspire Record 199391 DOI 10.17182/hepdata.16215

Events with a single highpT charged particle were recorded with the Split-Field-Magnet Detector in proton-proton collisions at the CERN-ISR. In the jet opposite to the trigger region the densities of photons and reconstructed neutral pions were measured with a liquid argon shower counter. Scaled momentum distributions of these particles are given and compared with those of charged pions. The spectra of charged and neutral pions coincide. The production cross-section of neutrals in the away jet shows no dependence on the flavour of the trigger particle.

1 data table
Table 1

No description provided.


Production of the F(0) Meson in Photon-photon Collisions

The CELLO collaboration Behrend, H.J. ; Fenner, H. ; Schachter, M.J. ; et al.
Z.Phys.C 23 (1984) 223, 1984.
Inspire Record 199731 DOI 10.17182/hepdata.16320

The production of thef0 in two photon collisions, with the subsequent decayf0→π+π− has been observed in the CELLO detector at PETRA. Thef0 peak was found to lie on a dipion continuum and to be shifted downwards in mass by ≃50 MeV/c2. The ππ mass spectrum from 0.8 to 1.5 GeV/c2 was well fitted by the model of Mennessier using only a unitarised Born amplitude and helicity 2f0 amplitude. The previously observed mass shift and distortion of thef0 peak are explained by strong interference between the Born andf0 amplitudes. The only free parameter in the fit of the data to the model is the radiative widthΓγγ(f0). It was found that:Γγγ(f0)=2.5±0.1±0.5 keV where the first (second) quoted errors are statistical (systematic).

2 data tables
Table 1

Data read from graph.

Table 2

Data read from graph.