Date

MASSES, WIDTHS, AND LEPTONIC WIDTHS OF THE HIGHER UPSILON RESONANCES

Lovelock, D.M.J. ; Horstkotte, J.E. ; Klopfenstein, C. ; et al.
Phys.Rev.Lett. 54 (1985) 377-380, 1985.
Inspire Record 215716 DOI 10.17182/hepdata.20355

The masses, total widths, and leptonic widths of three triplet s-wave bb¯ states ϒ(4S), ϒ(5S), and ϒ(6S) are determined from measurements of the e+e− annihilation cross section into hadrons for 10.55

1 data table

VISIBLE CROSS SECTION INTO HADRONS.


OBSERVATION OF AN ENHANCEMENT IN ANTI-P P ---> PI+ PI- AND ANTI-P P ---> K+ K- CROSS-SECTIONS AT ANTI-P MOMENTUM OF APPROXIMATELY 500-MEV/C

Tanimori, T. ; Fujii, T. ; Kageyama, T. ; et al.
Phys.Rev.Lett. 55 (1985) 1835-1838, 1985.
Inspire Record 221965 DOI 10.17182/hepdata.20293

The reactions p¯p→π+π− and K+K− have been studied at 390, 490, 590, 690, and 780 MeV/c. An enhancement of about 150 μb has been observed in the cross sections of both reactions at the same beam momentum of 490 MeV/c. If this structure is interpreted as a meson resonance, it has a mass of 1940 ± 20 MeV and a width of less than 40 MeV.

11 data tables

No description provided.

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NEUTRAL PION PHOTOPRODUCTION ON THE DEUTERON

Imanishi, A. ; Ishii, T. ; Kato, S. ; et al.
Phys.Rev.Lett. 54 (1985) 2497-2500, 1985.
Inspire Record 220232 DOI 10.17182/hepdata.20385

Large-angle cross sections for γd→π0d are systematically measured in the photon energy range between 500 and 1000 MeV. A good fit is obtained by use of a Glauber-model calculation which includes the dibaryon resonances F33(2.26) and G41(2.51), but the fit has an unusual nature in the role of resonance and nonresonance contributions.

2 data tables

Liquid hydrogen target for final calibration.

LIQUID DEUTERIUM TARGET.


PRIMAKOFF PRODUCTION OF THE B+ (1235) MESON

Collick, B. ; Heppelmann, S. ; Joyce, T. ; et al.
Phys.Rev.Lett. 53 (1984) 2374-2377, 1984.
Inspire Record 215103 DOI 10.17182/hepdata.20414

We have measured the coherent nuclear production of π+ω systems at 202.5 GeV. This final state is dominated by the B+(1235) meson with a measured mass and full width of 1.271 ± 0.011 GeV and 0.232 ± 0.029 GeV, respectively. A radiative width of 230 ± 60 keV was extracted for the process B+(1235)→π+γ.

1 data table

DATA REQUESTED FROM THE AUTHORS.


Results of the experiments from the neutral detector at the VEPP-2M storage ring in the energy region 2E$_{0}$ = 1.05 - 1.40 GeV

Dolinski, S.I. ; Druzhinin, V P ; Dubrovin, M S ; et al.
IYAF-85-98, 1985.
Inspire Record 1393709 DOI 10.17182/hepdata.982

None

4 data tables

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Measurement of the Reaction $e^+ e^- \to \tau^+ \tau^-$ at $\sqrt{s}=29$-{GeV}

Gan, K.K. ; Beltrami, I. ; Bylsma, B.G. ; et al.
Phys.Lett.B 153 (1985) 116-120, 1985.
Inspire Record 212773 DOI 10.17182/hepdata.6571

The reaction e + e − → τ + τ − has been measured using the high resolution spectrometer at PEP. The angular distribution shows a forward-backward asymmetry of −(6.1±2.3±0.5)%, corresponding to an axial-vector coupling if g a τ g a e = 0.28 ±0.11± 0.03, in good agreement with the standard model of electroweak interactions. The measured cross section yields ifR ττ = 1.10± 0.03±0.04, consistent with QED and giving QED cutoff parameters of Λ + >92 GeV and Λ − >246 GeV at 95% C.L.

4 data tables

Comparison of total tau pair cross section with O(alpha**3) QED prediction.

Corrected for acceptance backgraound, and O(alpha**3) radiative effects.

Forward-backward asymmetry based on fit to angular distributions.

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Production of gamma Quanta at Inelastic p 20-Ne and p n Interactions at 300 GeV

Azimov, S. ;
PTIU-85-29-FVE, 1985.
Inspire Record 1395718 DOI 10.17182/hepdata.161

None

4 data tables

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INCLUSIVE K0(S), LAMBDA AND anti-LAMBDA PRODUCTION IN 360-GeV/c p p INTERACTIONS USING THE EUROPEAN HYBRID SPECTROMETER

The EHS-RCBC collaboration Asai, M. ; Bugg, W.M. ; Bailly, J.L. ; et al.
IFVE-85-65, 1985.
Inspire Record 214009 DOI 10.17182/hepdata.10425

None

17 data tables

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

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

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

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NEGATIVE KAON AND ANTI-PROTON PRODUCTION NEAR 700-MEV/C BY 28.4-GEV/PROTONS

Snow, J.M. ; Axelrod, S. ; Morrison, R.L. ; et al.
Phys.Rev.D 32 (1985) 11-20, 1985.
Inspire Record 220912 DOI 10.17182/hepdata.23560

We present measurements of kaon and antiproton production cross sections in the momentum region of 700 MeV/c from 0° to 10° by 28.4-GeV/c protons on complex nuclei. A model to describe the A dependence of these cross sections is discussed and compared with these and other data.

5 data tables

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TRANSVERSE SPIN DEPENDENCE OF THE P P TOTAL CROSS-SECTION DELTA sigma-t FROM 0.8-GEV/C TO 2.5-GEV/C

Madigan, W.P. ; Bell, D.A. ; Buchanan, J.A. ; et al.
Phys.Rev.D 31 (1985) 966-975, 1985.
Inspire Record 216906 DOI 10.17182/hepdata.23564

The difference ΔσT=σ(↓↑)-σ(↑↑) between the proton-proton total cross sections for protons in pure transverse-spin states, was measured at incident momenta 0.8 to 2.5 GeV/c in experiments performed at the Los Alamos Clinton P. Anderson Meson Physics Facility and the Argonne Zero Gradient Synchrotron. In agreement with other data, peaks were observed at center-of-mass energies of 2.14 and 2.43 GeV/c2, where D21 and G41 dibaryon resonances have been proposed.

2 data tables

DATA FROM LAMPF EXPERIMENT.

DATA FROM ARGONNE EXPERIMENT.