Searching a dark photon with HADES

doi:10.1016/j.physletb.2014.02.035

Searching a dark photon with HADES

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Searching a dark photon with HADES

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dc.contributor.author	Agakishiev, G.	pl
dc.contributor.author	Bałanda, Andrzej [SAP11003402]	pl
dc.contributor.author	Belver, D.	pl
dc.contributor.author	Belyaev, A.	pl
dc.contributor.author	Berger-Chen, J. C.	pl
dc.contributor.author	Blanco, A.	pl
dc.contributor.author	Böhmer, M.	pl
dc.contributor.author	Boyard, J. L.	pl
dc.contributor.author	Cabanelas, P.	pl
dc.contributor.author	Chernenko, S.	pl
dc.contributor.author	Dybczak, Adrian	pl
dc.contributor.author	Epple, E.	pl
dc.contributor.author	Fabbietti, L.	pl
dc.contributor.author	Fateev, O.	pl
dc.contributor.author	Finocchiaro, P.	pl
dc.contributor.author	Fonte, P.	pl
dc.contributor.author	Friese, J.	pl
dc.contributor.author	Fröhlich, I.	pl
dc.contributor.author	Galatyuk, T.	pl
dc.contributor.author	Garzón, J. A.	pl
dc.contributor.author	Gernhäuser, R.	pl
dc.contributor.author	Göbel, K.	pl
dc.contributor.author	Golubeva, M.	pl
dc.contributor.author	González-Díaz, D.	pl
dc.contributor.author	Guber, F.	pl
dc.contributor.author	Gumberidze, M.	pl
dc.contributor.author	Heinz, T.	pl
dc.contributor.author	Hennino, T.	pl
dc.contributor.author	Holzmann, R.	pl
dc.contributor.author	Ierusalimov, A.	pl
dc.contributor.author	Iori, I.	pl
dc.contributor.author	Ivashkin, A.	pl
dc.contributor.author	Jurkovic, M.	pl
dc.contributor.author	Kämpfer, B.	pl
dc.contributor.author	Karavicheva, T.	pl
dc.contributor.author	Koenig, I.	pl
dc.contributor.author	Koenig, W.	pl
dc.contributor.author	Kolb, B. W.	pl
dc.contributor.author	Kornakov, G.	pl
dc.contributor.author	Kotte, R.	pl
dc.contributor.author	Krása, A.	pl
dc.contributor.author	Krizek, F.	pl
dc.contributor.author	Krücken, R.	pl
dc.contributor.author	Kuc, Hubert [USOS122173]	pl
dc.contributor.author	Kühn, W.	pl
dc.contributor.author	Kugler, A.	pl
dc.contributor.author	Kurepin, A.	pl
dc.contributor.author	Ladygin, V.	pl
dc.contributor.author	Lalik, R.	pl
dc.contributor.author	Lang, S.	pl
dc.contributor.author	Lapidus, K.	pl
dc.contributor.author	Lebedev, A.	pl
dc.contributor.author	Liu, T.	pl
dc.contributor.author	Lopes, L.	pl
dc.contributor.author	Lorenz, M.	pl
dc.contributor.author	Maier, L.	pl
dc.contributor.author	Mangiarotti, A.	pl
dc.contributor.author	Markert, J.	pl
dc.contributor.author	Metag, V.	pl
dc.contributor.author	Michalska, Beata	pl
dc.contributor.author	Michel, J.	pl
dc.contributor.author	Müntz, C.	pl
dc.contributor.author	Naumann, L.	pl
dc.contributor.author	Pachmayer, Y. C.	pl
dc.contributor.author	Pałka, Marek [SAP14007322]	pl
dc.contributor.author	Parpottas, Y.	pl
dc.contributor.author	Pechenov, V.	pl
dc.contributor.author	Pechenova, O.	pl
dc.contributor.author	Petousis, V.	pl
dc.contributor.author	Pietraszko, J.	pl
dc.contributor.author	Przygoda, Witold [SAP11016049]	pl
dc.contributor.author	Ramstein, B.	pl
dc.contributor.author	Reshetin, A.	pl
dc.contributor.author	Rustamov, A.	pl
dc.contributor.author	Sadovsky, A.	pl
dc.contributor.author	Salabura, Piotr [SAP11011883]	pl
dc.contributor.author	Scheib, T.	pl
dc.contributor.author	Schuldes, H.	pl
dc.contributor.author	Schmah, A.	pl
dc.contributor.author	Schwab, E.	pl
dc.contributor.author	Siebenson, J.	pl
dc.contributor.author	Sobolev, Yu. G.	pl
dc.contributor.author	Spataro, S.	pl
dc.contributor.author	Spruck, B.	pl
dc.contributor.author	Ströbele, H.	pl
dc.contributor.author	Stroth, J.	pl
dc.contributor.author	Sturm, C.	pl
dc.contributor.author	Tarantola, A.	pl
dc.contributor.author	Teilab, K.	pl
dc.contributor.author	Tlusty, P.	pl
dc.contributor.author	Traxler, M.	pl
dc.contributor.author	Trębacz, Radosław	pl
dc.contributor.author	Tsertos, H.	pl
dc.contributor.author	Vasiliev, T.	pl
dc.contributor.author	Wagner, V.	pl
dc.contributor.author	Weber, M.	pl
dc.contributor.author	Wendisch, C.	pl
dc.contributor.author	Wüstenfeld, J.	pl
dc.contributor.author	Yurevich, S.	pl
dc.contributor.author	Zanevsky, Y.	pl
dc.date.accessioned	2015-06-02T11:17:44Z
dc.date.available	2015-06-02T11:17:44Z
dc.date.issued	2014	pl
dc.identifier.issn	0370-2693	pl
dc.identifier.uri	http://ruj.uj.edu.pl/xmlui/handle/item/8700
dc.language	eng	pl
dc.rights	Udzielam licencji. Uznanie autorstwa 3.0	*
dc.rights.uri	http://creativecommons.org/licenses/by/3.0/legalcode	*
dc.title	Searching a dark photon with HADES	pl
dc.type	JournalArticle	pl
dc.description.physical	265-271	pl
dc.abstract.en	We present a search for the $e^{+}e^{-}$ decay of a hypothetical dark photon, also named U vector boson, in inclusive dielectron spectra measured by HADES in the p(3.5 GeV) + p, Nb reactions, as well as the Ar (1.756 GeV/u) + KCl reaction. An upper limit on the kinetic mixing parameter squared $\epsilon ^{2}$ at 90% CL has been obtained for the mass range $M_{U}$=0.02-0.55 GeV/$c^{2}$ and is compared with the present world data set. For masses 0.03-0.1 GeV/$c^{2}$, the limit has been lowered with respect to previous results, allowing now to exclude a large part of the parameter region favored by the muon g−2 anomaly. Furthermore, an improved upper limit on the branching ratio of 2.3 $\times 10^{-6}$ has been set on the helicity-suppressed direct decay of the eta meson, $\eta \rightarrow e^{+}e^{-}$, at 90% CL.	pl
dc.subject.en	dark photon	pl
dc.subject.en	hidden sector	pl
dc.subject.en	dark matter	pl
dc.subject.en	rare eta decays	pl
dc.description.volume	731	pl
dc.description.publication	0,5	pl
dc.identifier.doi	10.1016/j.physletb.2014.02.035	pl
dc.identifier.eissn	1873-2445	pl
dc.title.journal	Physics Letters. B	pl
dc.contributor.institution	HADES Collaboration	pl
dc.language.container	eng	pl
dc.affiliation	Wydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut Fizyki im. Mariana Smoluchowskiego	pl
dc.subtype	Article	pl
dc.rights.original	CC-BY; otwarte czasopismo; ostateczna wersja wydawcy; w momencie opublikowania; 0;	pl
dc.identifier.project	ROD UJ / P	pl
.pointsMNiSW	[2014 A]: 40