"The existence of a light dark force mediator has been tested with the KLOE detector at DA��NE. This particle, called U, is searched for using the decay chain φ → ηU, η → π+π−π0, U → e+e−. No evidence is found in 1.5 fb−1 of data. The resulting exclusion plot covers the mass range 5 < MU < 470 MeV, setting an upper limit on the ratio between the U boson coupling constant and the fine structure constant, α′\/α, of ��2×10−5 at 90% C.L. for 50<MU <420 MeV."

Archilli, F., Ceradini, F., PRADO LONGHI, I. (2012). Search for a vector gauge boson in phi meson decays with the KLOE detector. PHYSICS LETTERS. SECTION B, 706, 251-255 [10.1016/j.physletb.2011.11.033].

Search for a vector gauge boson in phi meson decays with the KLOE detector

CERADINI, Filippo;PRADO LONGHI, IVAN
2012-01-01

Abstract

"The existence of a light dark force mediator has been tested with the KLOE detector at DA��NE. This particle, called U, is searched for using the decay chain φ → ηU, η → π+π−π0, U → e+e−. No evidence is found in 1.5 fb−1 of data. The resulting exclusion plot covers the mass range 5 < MU < 470 MeV, setting an upper limit on the ratio between the U boson coupling constant and the fine structure constant, α′\/α, of ��2×10−5 at 90% C.L. for 50
2012
Archilli, F., Ceradini, F., PRADO LONGHI, I. (2012). Search for a vector gauge boson in phi meson decays with the KLOE detector. PHYSICS LETTERS. SECTION B, 706, 251-255 [10.1016/j.physletb.2011.11.033].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11590/278643
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