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Measurement of η′(958) formation in two-photon collisions at LEP1

Document type: Articulo

Abstract

The formation of the η′ in the reaction e+e−→e+e−η′→e+e−π+π−γ has been measured by the L3 detector at a centre-of-mass energy of 91 GeV. The radiative width of the η′ has been found to be Γγγ=4.17±0.10(stat.)±0.27(sys.)keV. The Q2 dependence of the η′ formation cross section has been measured for Q2≤10GeV2 and the η′ electromagnetic transition form factor has been determined. The form factor can be parametrised by a pole form with Λ=0.900±0.046(stat.)±0.022(sys.)GeV. It is also consistent with recent non-perturbative QCD calculations.

General information

Issue date: 5 de febrero de 1998
Document language: English
Journal: Physics Letters B; vol. 418, no. 3-4
Origin: Facultad de Ciencias Exactas
ISSN: 0370-2693
Pages: 399-410
xmlui.dri2xhtml.METS-1.0.item-dc-subject: Fotones ; large electron positron collider ; L3 detector
Subjects: Ciencias Exactas ; Física

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Created: 4 de septiembre de 2019
Available since: 4 de septiembre de 2019
Please, use one of this identificators(URI) for cite o linking this item:
  • http://sedici.unlp.edu.ar/handle/10915/80460
  • https://doi.org/10.1016/S0370-2693(97)01219-7

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    Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) Except where otherwise noted, this item's license is described as Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)