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Limit on the produc...
Limit on the production of a new vector boson in e+e− → Uγ, U → π+π− with the KLOE experiment
- Article/chapterEnglish2016
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Elsevier BV,2016
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electronicrdacarrier
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LIBRIS-ID:oai:DiVA.org:uu-289366
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https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-289366URI
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https://doi.org/10.1016/j.physletb.2016.04.019DOI
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Language:English
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Summary in:English
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
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Abstract The recent interest in a light gauge boson in the framework of an extra U(1) symmetry motivates searches in the mass range below 1 GeV. We present a search for such a particle, the dark photon, in e + e − → U γ , U → π + π − based on 28 million e + e − → π + π − γ events collected at DAΦNE by the KLOE experiment. The π + π − production by initial-state radiation compensates for a loss of sensitivity of previous KLOE U → e + e − , μ + μ − searches due to the small branching ratios in the ρ – ω resonance region. We found no evidence for a signal and set a limit at 90% CL on the mixing strength between the photon and the dark photon, ε 2 , in the U mass range between 527 and 987 MeV . Above 700 MeV this new limit is more stringent than previous ones.
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Babusci, D.
(author)
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Bencivenni, G.
(author)
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Berlowski, M.
(author)
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Bloise, C.
(author)
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Bossi, F.
(author)
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Branchini, P.
(author)
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Budano, A.
(author)
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Caldeira Balkeståh, LiUppsala universitet,Kärnfysik(Swepub:uu)liaca435
(author)
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Cao, B.Uppsala universitet,Kärnfysik(Swepub:uu)boaca926
(author)
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Ceradini, F.
(author)
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Ciambrone, P.
(author)
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Curciarello, F.
(author)
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Czerwiński, E.
(author)
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D'Agostini, G.
(author)
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Danè, E.
(author)
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De Leo, V.
(author)
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De Lucia, E.
(author)
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De Santis, A.
(author)
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De Simone, P.
(author)
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Di Cicco, A.
(author)
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Di Domenico, A.
(author)
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Di Salvo, R.
(author)
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Domenici, D.
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D'Uffizi, A.
(author)
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Fantini, A.
(author)
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Felici, G.
(author)
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Fiore, S.
(author)
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Gajos, A.
(author)
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Gauzzi, P.
(author)
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Giardina, G.
(author)
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Giovannella, S.
(author)
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Graziani, E.
(author)
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Happacher, F.
(author)
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Heijkenskjöld, LenaUppsala universitet,Kärnfysik(Swepub:uu)lenhe965
(author)
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Ikegami Andersson, WalterUppsala universitet,Kärnfysik(Swepub:uu)walan603
(author)
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Johansson, TordUppsala universitet,Kärnfysik(Swepub:uu)tordjoha
(author)
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Kamińska, D.
(author)
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Krzemien, W.
(author)
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Kupsc, A.Uppsala universitet,Kärnfysik(Swepub:uu)andrkups
(author)
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Loffredo, S.
(author)
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Mandaglio, G.
(author)
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Martini, M.
(author)
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Mascolo, M.
(author)
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Messi, R.
(author)
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Miscetti, S.
(author)
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Morello, G.
(author)
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Moricciani, D.
(author)
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Moskal, P.
(author)
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Palladino, A.
(author)
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Papenbrock, MichaelUppsala universitet,Kärnfysik(Swepub:uu)micpa904
(author)
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Passeri, A.
(author)
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Patera, V.
(author)
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Perez del Rio, E.
(author)
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Ranieri, A.
(author)
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Santangelo, P.
(author)
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Sarra, I.
(author)
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Schioppa, M.
(author)
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Silarski, M.
(author)
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Sirghi, F.
(author)
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Tortora, L.
(author)
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Venanzoni, G.
(author)
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Wiślicki, W.
(author)
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Wolke, MagnusUppsala universitet,Kärnfysik(Swepub:uu)mawol031
(author)
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Uppsala universitetKärnfysik
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In:Physics Letters B: Elsevier BV757, s. 356-3610370-26931873-2445
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Anastasi, A.
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Babusci, D.
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Bencivenni, G.
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Berlowski, M.
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Bloise, C.
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Bossi, F.
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Branchini, P.
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Budano, A.
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Caldeira Balkest ...
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Cao, B.
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Ceradini, F.
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Ciambrone, P.
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Curciarello, F.
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Czerwiński, E.
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D'Agostini, G.
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Danè, E.
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De Leo, V.
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De Lucia, E.
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De Santis, A.
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De Simone, P.
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Di Cicco, A.
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Di Domenico, A.
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Di Salvo, R.
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Domenici, D.
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D'Uffizi, A.
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Fantini, A.
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Felici, G.
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Fiore, S.
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Gajos, A.
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Gauzzi, P.
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Giardina, G.
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Giovannella, S.
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Graziani, E.
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Happacher, F.
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Heijkenskjöld, L ...
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Ikegami Andersso ...
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Johansson, Tord
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Kamińska, D.
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Krzemien, W.
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Kupsc, A.
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Loffredo, S.
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Mandaglio, G.
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Martini, M.
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Mascolo, M.
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Messi, R.
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Miscetti, S.
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Morello, G.
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Moricciani, D.
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Moskal, P.
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Palladino, A.
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Papenbrock, Mich ...
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Passeri, A.
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Patera, V.
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Perez del Rio, E ...
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Ranieri, A.
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Santangelo, P.
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Sarra, I.
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Schioppa, M.
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Silarski, M.
-
Sirghi, F.
-
Tortora, L.
-
Venanzoni, G.
-
Wiślicki, W.
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Wolke, Magnus
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Uppsala University