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Search for a vector gauge boson in phi meson decays with the KLOE detector KLOE-2 Collaboration
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2012 (English)In: Physics Letters B, ISSN 0370-2693, Vol. 706, no 4-5, 251-255 p.Article in journal (Refereed) Published
Abstract [en]

The existence of a light dark force mediator has been tested with the KLOE detector at DA Phi NE. This particle, called U. is searched for using the decay chain phi -> eta U, eta -> pi(+)pi(-)pi(0), U -> e(+)e(-). No evidence is found in 1.5 fb(-1) of data. The resulting exclusion plot covers the mass range 5 < M-U < 470 MeV, setting an upper limit on the ratio between the U boson coupling constant and the One structure constant, alpha'/alpha, of <= 2 x 10(-5) at 90% C.L. for 50 < M-U < 420 MeV.

Place, publisher, year, edition, pages
2012. Vol. 706, no 4-5, 251-255 p.
Keyword [en]
e(+)e(-) collisions, Dark forces, Gauge vector boson
National Category
Physical Sciences
URN: urn:nbn:se:uu:diva-169366DOI: 10.1016/j.physletb.2011.11.033ISI: 000299756800003OAI: oai:DiVA.org:uu-169366DiVA: diva2:506711
Available from: 2012-02-29 Created: 2012-02-28 Last updated: 2013-03-18Bibliographically approved

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Caldeira Balkeståhl, LiHöistad, BoJacewicz, MarekJohansson, TordKupsc, AndrzejRedmer, Christoph F.Wolke, Magnus
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