We have searched for a light vector boson U, the possible carrier of a "dark force", with the KLOE detector at the DA Phi NE e(+)e(-) collider, motivated by astrophysical evidence for the presence of dark matter in the Universe. Using e(+)e(-) collisions collected with an integrated luminosity of 239.3 pb(-1), we look for a dimuon mass peak in the reaction e(+)e(-) -> mu(+)mu(-)gamma, corresponding to the decay U -> mu(+)mu(-). We find no evidence for a U vector boson signal. We set a 90% CL upper limit for the mixing parameter squared between the photon and the U boson of 1.6 x 10(-5) to 8.6 x 10(-7) for the mass region 520 < m(U) < 980 MeV. (C) 2014 The Authors. Published by Elsevier B. V.

Babusci, D., Balwierz-Pytko, I., Bencivenni, G., Bloise, C., Bossi, F., Branchini, P., et al. (2014). Search for light vector boson production in e+e-→μ+μ-γ interactions with the KLOE experiment. PHYSICS LETTERS. SECTION B, 736, 459-464 [10.1016/j.physletb.2014.08.005].

Search for light vector boson production in e+e-→μ+μ-γ interactions with the KLOE experiment

Fantini A.;Loffredo S.;Mascolo M.;Messi R.;Sarra I.;
2014-01-01

Abstract

We have searched for a light vector boson U, the possible carrier of a "dark force", with the KLOE detector at the DA Phi NE e(+)e(-) collider, motivated by astrophysical evidence for the presence of dark matter in the Universe. Using e(+)e(-) collisions collected with an integrated luminosity of 239.3 pb(-1), we look for a dimuon mass peak in the reaction e(+)e(-) -> mu(+)mu(-)gamma, corresponding to the decay U -> mu(+)mu(-). We find no evidence for a U vector boson signal. We set a 90% CL upper limit for the mixing parameter squared between the photon and the U boson of 1.6 x 10(-5) to 8.6 x 10(-7) for the mass region 520 < m(U) < 980 MeV. (C) 2014 The Authors. Published by Elsevier B. V.
2014
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore FIS/04 - FISICA NUCLEARE E SUBNUCLEARE
English
Con Impact Factor ISI
Dark matter; Dark forces; U boson
Babusci, D., Balwierz-Pytko, I., Bencivenni, G., Bloise, C., Bossi, F., Branchini, P., et al. (2014). Search for light vector boson production in e+e-→μ+μ-γ interactions with the KLOE experiment. PHYSICS LETTERS. SECTION B, 736, 459-464 [10.1016/j.physletb.2014.08.005].
Babusci, D; Balwierz-Pytko, I; Bencivenni, G; Bloise, C; Bossi, F; Branchini, P; Budano, A; Caldeira Balkestahl, L; Ceradini, F; Ciambrone, P; Curciarello, F; Czerwinski, E; Dane, E; De Leo, V; De Lucia, E; De Robertis, G; De Santis, A; De Simone, P; Di Cicco, A; Di Domenico, A; Di Salvo, R; Domenici, D; Erriquez, O; Fanizzi, G; Fantini, A; Felici, G; Fiore, S; Franzini, P; Gajos, A; Gauzzi, P; Giardina, G; Giovannella, S; Graziani, E; Happacher, F; Heijkenskjold, L; Hoistad, B; Johansson, T; Kacprzak, K; Kaminska, D; Krzemien, W; Kupsc, A; Lee-Franzini, J; Loddo, F; Loffredo, S; Mandaglio, G; Martemianov, M; Martini, M; Mascolo, M; Messi, R; Miscetti, S; Morello, G; Moricciani, D; Moskal, P; Nguyen, F; Palladino, A; Passeri, A; Patera, V; Prado Longhi, I; Ranieri, A; Santangelo, P; Sarra, I; Schioppa, M; Sciascia, B; Silarski, M; Tortora, L; Venanzoni, G; Wislicki, W; Wolke, M; Zdebik, J
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/206453
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