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  • Anastasi, A. (author)

Limit on the production of a new vector boson in e+e− → Uγ, U → π+π− with the KLOE experiment

  • Article/chapterEnglish2016

Publisher, publication year, extent ...

  • Elsevier BV,2016
  • electronicrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:uu-289366
  • https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-289366URI
  • https://doi.org/10.1016/j.physletb.2016.04.019DOI

Supplementary language notes

  • Language:English
  • Summary in:English

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  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • 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)
  • Bencivenni, G. (author)
  • Berlowski, M. (author)
  • Bloise, C. (author)
  • Bossi, F. (author)
  • Branchini, P. (author)
  • Budano, A. (author)
  • Caldeira Balkeståh, LiUppsala universitet,Kärnfysik(Swepub:uu)liaca435 (author)
  • Cao, B.Uppsala universitet,Kärnfysik(Swepub:uu)boaca926 (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)
  • Heijkenskjöld, LenaUppsala universitet,Kärnfysik(Swepub:uu)lenhe965 (author)
  • Ikegami Andersson, WalterUppsala universitet,Kärnfysik(Swepub:uu)walan603 (author)
  • Johansson, TordUppsala universitet,Kärnfysik(Swepub:uu)tordjoha (author)
  • Kamińska, D. (author)
  • Krzemien, W. (author)
  • Kupsc, A.Uppsala universitet,Kärnfysik(Swepub:uu)andrkups (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)
  • Papenbrock, MichaelUppsala universitet,Kärnfysik(Swepub:uu)micpa904 (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)
  • Wolke, MagnusUppsala universitet,Kärnfysik(Swepub:uu)mawol031 (author)
  • Uppsala universitetKärnfysik (creator_code:org_t)

Related titles

  • In:Physics Letters B: Elsevier BV757, s. 356-3610370-26931873-2445

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