Ferbel, T.
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Observation of the Upsilon''' at CESR

Finocchiaro, G. ; Giannini, G. ; Lee-Franzini, Juliet ; et al.
Phys.Rev.Lett. 45 (1980) 222, 1980.
Inspire Record 9427 DOI 10.17182/hepdata.20691

During an energy scan at the Cornell Electron Storage Ring, with use of the Columbia University-Stony Brook NaI detector, an enhancement in σ(e+e−→hadrons) is observed at center-of-mass energy ∼10.55 GeV. The mass and leptonic width of this state (ϒ′′′) suggest that it is the 4S13 bound state of the b quark and its antiquark. After applying to the data a cut in a (pseudo) thrust variable, the natural width is measured to be Γ=12.6±6.0 MeV, indicating that the ϒ′′′ is above the threshold for BB¯ production.

1 data table
Table 1

VISIBLE TOTAL HADRONIC CROSS SECTION FOR FIRST, THIRD AND FOURTH UPSILONS.


INCLUSIVE MUON PRODUCTION AT PETRA ENERGIES

The Pluto collaboration Berger, Christoph ; Genzel, H. ; Grigull, R. ; et al.
Phys.Rev.Lett. 45 (1980) 1533-1537, 1980.
Inspire Record 153812 DOI 10.17182/hepdata.20692

In this Letter, a measurement of inclusive muon production (pμ>2 GeV/c) in e+e− annihilation into hadrons at center-of-mass energies from s=12 to 31.6 GeV is reported. The results agree with the expected semileptonic decays from charmed and bottom mesons.

2 data tables
Table 1

MUONS PER HADRONIC EVENT.

Table 2

INVARIANT CROSS SECTION, ASSUMING HADRONIC CROSS SECTION HAS R VALUE OF 3.9 +- 0.5.


rivet Analysis
Charged Pion, Kaon, Proton and anti-Proton Production in High-Energy e+ e- Annihilation

The TASSO collaboration Brandelik, R. ; Braunschweig, W. ; Gather, K. ; et al.
Phys.Lett.B 94 (1980) 444-449, 1980.
Inspire Record 153656 DOI 10.17182/hepdata.27192

Production of pions, kaons, protons and antiprotons has been studied in e + e − annihilations at 12 and 30 GeV centre of mass energy using time of flight techniques. The fractional yield of charged kaons and baryons appears to rise with outgoing particle momentum. At our highest energy at least 40% of e + e − annihilations into hadrons are estimated to contain baryons.

13 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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Direct Photon Production at the $\psi$

Scharre, D.L. ; Alam, M.S. ; Boyarski, A. ; et al.
Phys.Rev.D 23 (1981) 43, 1981.
Inspire Record 153865 DOI 10.17182/hepdata.24079

We present results of a detailed analysis of inclusive direct photon production at the ψ(3095). The direct-photon momentum distribution for x>0.4 is presented and compared with the leading-order quantum-chromodynamic prediction. The total production rate is found to be consistent with theoretical expectations, but the observed momentum distribution is considerably softer. Results of an analysis of some inclusive properties of the hadronic system recoiling against the direct photon are presented. The mean charged-particle and Ks multiplicities are presented as functions of the invariant mass of the hadronic system. These data agree well with the corresponding mean multiplicities measured in e+e− annihilations at center-of-mass energies comparable to the invariant mass of the hadronic system.

4 data tables
Table 1

TOTAL INCLUSIVE PHOTON MOMENTUM SPECTRUM. ERRORS ARE STATISTICAL ONLY.

Table 2

PHOTON SPECTRUM PREDICTED FROM MEASUREMENT OF THE PI0 AND ETA DISTRIBUTIONS. ERRORS INCLUDE BOTH STATISTICAL AND RELATIVE SYSTEMATIC COMPONENTS.

Table 3

INCLUSIVE PI0 MOMENTUM DISTRIBUTION. QUOTED ERRORS ARE STATISTICAL ONLY. OVERALL AND RELATIVE SYSTEMATIC ERRORS ARE LESS THAN 30 PCT AND MAY VARY SLOWLY WITH X.

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The Energy Dependence of Charged Particle Multiplicity in $p p$ Interactions

Basile, M. ; Cara Romeo, G. ; Cifarelli, L. ; et al.
Phys.Lett.B 95 (1980) 311-312, 1980.
Inspire Record 153920 DOI 10.17182/hepdata.27162

The average charged multiplicity in proton-proton interactions has been studied at √ s = 62 GeV. A very good agreement with the average charged multiplicity measured in e + e − annihilation at different energies is obtained by redefining, in p-p, the correct energies available for particle production. This means that a p-p collision at √ s = 62 GeV does in fact correspond to a large range of effective hadronic energies available for particle production.

1 data table
Table 1

AVERAGE CHARGED MULTIPLICITY AS A FUNCTION OF HADRONIC ENERGY WHERE E(NAME=HAD) IS THE INCIDENT PROTON ENERGY (COLLIDING BEAM ENERGY) MINUS THE LEADING PROTON ENERGY.


Study of the Production of Meson Resonances in Pion - Carbon Interactions at $P=40$-{GeV}/$c$

Angelov, N.S. ; Balea, O. ; Boldea, V. ; et al.
Sov.J.Nucl.Phys. 33 (1981) 832, 1981.
Inspire Record 156120 DOI 10.17182/hepdata.160

None

19 data tables
Table 1

Data from the Published Version (YF 33,1546).

Table 2

SIG FOR OMEGA(783) AND F0(700) ARE GIVEN WITH TAKING INTO ACCOUNT ALL DECAY MODES. Data from the Published Version (YF 33,1546).

Table 3

Data from the Published Version (YF 33,1546).

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Unique Solution for the Weak Neutral Current Coupling Constants in Purely Leptonic Interactions

The Mark-J collaboration Barber, D.P. ; Becker, U. ; Berghogff, G. ; et al.
Phys.Lett.B 95 (1980) 149-153, 1980.
Inspire Record 154136 DOI 10.17182/hepdata.6235

By combining results from the MARK-J at PETRA on Bhabha scattering, μ + μ - and τ + τ - production with recent world data from neutrino-electron scattering experiments, we determine unique values for the leptonic weak neutral current coupling constants g V and g A in the framework of electroweak models containing a single Z 0 . In contrast to previous analyses, we only use data from purely leptonic interactions, and therefore avoid the inherent uncertainties resulting from the use of hadronic targets. From the MARK-J data alone in the context of the standard SU(2) ⊗ U (1) model of Glashow, Weinberg and Salam, we find sin 2 θ W =0.24±0.11.

3 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.


Measurement of Diffractive 3 $\pi$ Production on a Polarized Target at 17-{GeV}/$c$

Chabaud, V. ; de Groot, J. ; Hyams, B. ; et al.
Nucl.Phys.B 178 (1981) 401-420, 1981.
Inspire Record 154064 DOI 10.17182/hepdata.34349

The reaction π − p↑→ π − π + π − p has been measured at 17 GeV/ c using a polarized target. The data sample contains about 60 000 interactions on polarized protons. The nucleon polarization as a function of momentum transfer is very similar to elastic π − p scattering and is nearly independent of the π mass, except for a possible structure around 1.2 GeV.

1 data table
Table 1

No description provided.


Experimental Results on $J/\psi$ Production by $\pi^\pm$, $K^\pm$, $p$ and $\bar{p}$ Beams at 39.5-{GeV}

Corden, M.J. ; Dowell, J.D. ; Garvey, J. ; et al.
Phys.Lett.B 96 (1980) 411, 1980.
Inspire Record 154482 DOI 10.17182/hepdata.44040

The production of J/ψ by π ± , K ± , p and p¯ incident on tungsten at 39.5GeV/ c beam momentum has been studied. Production of ψ' (3700) by π ± was also observed. The J/ψ relative particle/a ntiparticle cross-sections for x F 0 are σ(σ + ) σ(σ − =( are σ(σ ± )/σ(σ − )=(1.01±0.06), σ(K + )/σ(K) − )=(0.29±0.07) and σ(p) /σ(p¯)= (0.1+-0.03). The small p/p¯ and K + /K − cross-section ratios indicate the importance of valence quarks in the production process.

2 data tables
Table 1

No description provided.

Table 2

No description provided.


Rho rho Production by Two Photon Scattering

The TASSO collaboration Brandelik, R. ; Braunschweig, W. ; Gather, K. ; et al.
Phys.Lett.B 97 (1980) 448, 1980.
Inspire Record 154418 DOI 10.17182/hepdata.27137
1 data table
Table 1

Additional systematic uncertainty 25% not included.