114 research outputs found

    Reconclining phi radiative decays with other data for a0(980), fo(980), pi-pi -> KK and pi-pi -> eta-eta

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    Data for phi -> gamma (eta-pizero) are analysed using the KK loop model and compared with parameters of a0(980) derived from Crystal Barrel data. The eta-pi mass spectrum agrees closely and the absolute normalisation lies just within errors. However, BES parameters for fo(980) predict a normalisation for phi -> gamma (pizero-pizero) at least a factor 2 lower than is observed. This discrepancy may be eliminated by including constructive interference between fo(980) and sigma. The magnitude required for sigma -> KK is consistent with data on pi-pi -> KK. A dispersion relation analysis by Buttiker, Descotes-Genon and Moussallam of pi-pi -> KK leads to a similar conclusion. Data on pi-pi -> eta-eta also require decays of sigma to eta-eta. Four sets of pi-pi -> KK data all require a small but definite fo(1370) signal.Comment: 21 pages, 11 figures, Small rearrangement of reference

    Measurement of the Strong Coupling alpha s from Four-Jet Observables in e+e- Annihilation

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    Data from e+e- annihilation into hadrons at centre-of-mass energies between 91 GeV and 209 GeV collected with the OPAL detector at LEP, are used to study the four-jet rate as a function of the Durham algorithm resolution parameter ycut. The four-jet rate is compared to next-to-leading order calculations that include the resummation of large logarithms. The strong coupling measured from the four-jet rate is alphas(Mz0)= 0.1182+-0.0003(stat.)+-0.0015(exp.)+-0.0011(had.)+-0.0012(scale)+-0.0013(mass) in agreement with the world average. Next-to-leading order fits to the D-parameter and thrust minor event-shape observables are also performed for the first time. We find consistent results, but with significantly larger theoretical uncertainties.Comment: 25 pages, 15 figures, Submitted to Euro. Phys. J.

    A Semiotic Study of "The Reflex Arc Concept in Psychology"

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    departmental bulletin pape

    人口減少下における地域のあり方に関する研究 -「まちの駅」を事例として-

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    application/pdfdepartmental bulletin pape

    Electromagnetic Measurement on Singular Joint Gap of the Rails

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    applicationThis paper describes the measurement results of a normal joint gap and a singular joint gap of the rails using voltage detecting type rail joint gap sensor. In the case of a singular joint gap, the minimum value of a joint gap is able to be obtained by comparing the output voltage of two detecting coils that placed it toward the rail width and the measurement results of a normal joint gap.departmental bulletin pape

    IT・住基ネット(住民番号)を活用した地方行政の研究

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    東京財団研究推進部research repor

    Sale of certain New York Indian lands in Kansas

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    Part 2 of 247-1Indian AffairsNew York Indian Lands in Kansas. [2066] Sale of lands to settlers.1882-8
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