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Limit on the production of a new vector boson in e+e− → Uγ, U → π+π− with the KLOE experiment
- Anastasi, A. (author)
- Babusci, D. (author)
- Bencivenni, G. (author)
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- Berlowski, M. (author)
- Bloise, C. (author)
- Bossi, F. (author)
- Branchini, P. (author)
- Budano, A. (author)
- Ceradini, F. (author)
- Ciambrone, P. (author)
- Curciarello, F. (author)
- Czerwiński, E. (author)
- D'Agostini, G. (author)
- Danè, E. (author)
- De Leo, V. (author)
- De Lucia, E. (author)
- De Santis, A. (author)
- De Simone, P. (author)
- Di Cicco, A. (author)
- Di Domenico, A. (author)
- Di Salvo, R. (author)
- Domenici, D. (author)
- D'Uffizi, A. (author)
- Fantini, A. (author)
- Felici, G. (author)
- Fiore, S. (author)
- Gajos, A. (author)
- Gauzzi, P. (author)
- Giardina, G. (author)
- Giovannella, S. (author)
- Graziani, E. (author)
- Happacher, F. (author)
- Kamińska, D. (author)
- Krzemien, W. (author)
- Loffredo, S. (author)
- Mandaglio, G. (author)
- Martini, M. (author)
- Mascolo, M. (author)
- Messi, R. (author)
- Miscetti, S. (author)
- Morello, G. (author)
- Moricciani, D. (author)
- Moskal, P. (author)
- Palladino, A. (author)
- Passeri, A. (author)
- Patera, V. (author)
- Perez del Rio, E. (author)
- Ranieri, A. (author)
- Santangelo, P. (author)
- Sarra, I. (author)
- Schioppa, M. (author)
- Silarski, M. (author)
- Sirghi, F. (author)
- Tortora, L. (author)
- Venanzoni, G. (author)
- Wiślicki, W. (author)
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- (creator_code:org_t)
- Elsevier BV, 2016
- 2016
- English.
- In: Physics Letters B. - : Elsevier BV. - 0370-2693 .- 1873-2445. ; 757, s. 356-361
- Journal article (peer-reviewed)
Abstract
Subject headings
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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.
Subject headings
- NATURVETENSKAP -- Fysik -- Subatomär fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Subatomic Physics (hsv//eng)
Keyword
- Dark matter
- Dark forces
- Dark photon
- U boson
Publication and Content Type
- ref (subject category)
- art (subject category)
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- Physics Letters B (Search for host publication in LIBRIS)
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- By the author/editor
- Anastasi, A.
- Babusci, D.
- Bencivenni, G.
- Berlowski, M.
- Bloise, C.
- Bossi, F.
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- Branchini, P.
- Budano, A.
- Caldeira Balkest ...
- Cao, B.
- Ceradini, F.
- Ciambrone, P.
- Curciarello, F.
- Czerwiński, E.
- D'Agostini, G.
- Danè, E.
- De Leo, V.
- De Lucia, E.
- De Santis, A.
- De Simone, P.
- Di Cicco, A.
- Di Domenico, A.
- Di Salvo, R.
- Domenici, D.
- D'Uffizi, A.
- Fantini, A.
- Felici, G.
- Fiore, S.
- Gajos, A.
- Gauzzi, P.
- Giardina, G.
- Giovannella, S.
- Graziani, E.
- Happacher, F.
- Heijkenskjöld, L ...
- Ikegami Andersso ...
- Johansson, Tord
- Kamińska, D.
- Krzemien, W.
- Kupsc, A.
- Loffredo, S.
- Mandaglio, G.
- Martini, M.
- Mascolo, M.
- Messi, R.
- Miscetti, S.
- Morello, G.
- Moricciani, D.
- Moskal, P.
- Palladino, A.
- Papenbrock, Mich ...
- Passeri, A.
- Patera, V.
- Perez del Rio, E ...
- Ranieri, A.
- Santangelo, P.
- Sarra, I.
- Schioppa, M.
- Silarski, M.
- Sirghi, F.
- Tortora, L.
- Venanzoni, G.
- Wiślicki, W.
- Wolke, Magnus
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- About the subject
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- NATURAL SCIENCES
- NATURAL SCIENCES
- and Physical Science ...
- and Subatomic Physic ...
- Articles in the publication
- Physics Letters ...
- By the university
- Uppsala University
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