Search for the dark photon in π0 decays

NA48/2 Collaboration

doi:10.1016/j.physletb.2015.04.068

Search for the dark photon in π⁰ decays

NA48/2 Collaboration

Risultato della ricerca: Contributo su rivista › Articolo in rivista › peer review

Abstract

A sample of 1.69×10⁷ fully reconstructed π⁰→γe⁺e^- decay candidates collected by the NA48/2 experiment at CERN in 2003-2004 is analyzed to search for the dark photon (A^') production in the π⁰→γA^' decay followed by the prompt A^'→e⁺e^- decay. No signal is observed, and an exclusion region in the plane of the dark photon mass mA' and mixing parameter ε² is established. The obtained upper limits on ε² are more stringent than the previous limits in the mass range 9MeV/c2<mA'<70MeV/c2. The NA48/2 sensitivity to the dark photon production in the K^±→π^±A^' decay is also evaluated.

Lingua originale	Inglese
pagine (da-a)	178-185
Numero di pagine	8
Rivista	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	746
DOI	https://doi.org/10.1016/j.physletb.2015.04.068
Stato di pubblicazione	Pubblicato - 1 giu 2015
Pubblicato esternamente	Sì

Accesso al documento

10.1016/j.physletb.2015.04.068

Altri file e collegamenti

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@article{f906bd1a4b314f7695e7fb4ac646c338,

title = "Search for the dark photon in π0 decays",

abstract = "A sample of 1.69×107 fully reconstructed π0→γe+e- decay candidates collected by the NA48/2 experiment at CERN in 2003-2004 is analyzed to search for the dark photon (A') production in the π0→γA' decay followed by the prompt A'→e+e- decay. No signal is observed, and an exclusion region in the plane of the dark photon mass mA' and mixing parameter ε2 is established. The obtained upper limits on ε2 are more stringent than the previous limits in the mass range 9MeV/c2±→π±A' decay is also evaluated.",

author = "\{NA48/2 Collaboration\} and Batley, \{J. R.\} and G. Kalmus and C. Lazzeroni and Munday, \{D. J.\} and Slater, \{M. W.\} and Wotton, \{S. A.\} and R. Arcidiacono and G. Bocquet and N. Cabibbo and A. Ceccucci and D. Cundy and V. Falaleev and M. Fidecaro and L. Gatignon and A. Gonidec and W. Kubischta and A. Norton and A. Maier and M. Patel and A. Peters and S. Balev and Frabetti, \{P. L.\} and E. Gersabeck and E. Goudzovski and P. Hristov and V. Kekelidze and V. Kozhuharov and L. Litov and D. Madigozhin and N. Molokanova and I. Polenkevich and Yu Potrebenikov and S. Stoynev and A. Zinchenko and E. Monnier and E. Swallow and R. Winston and P. Rubin and A. Walker and W. Baldini and \{Cotta Ramusino\}, A. and P. Dalpiaz and C. Damiani and M. Fiorini and A. Gianoli and M. Martini and F. Petrucci and M. Savri{\'e} and M. Scarpa and H. Wahl",

note = "Publisher Copyright: {\textcopyright} 2015 The Authors.",

year = "2015",

month = jun,

day = "1",

doi = "10.1016/j.physletb.2015.04.068",

language = "English",

volume = "746",

pages = "178--185",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier BV",

}

TY - JOUR

T1 - Search for the dark photon in π0 decays

AU - NA48/2 Collaboration

AU - Batley, J. R.

AU - Kalmus, G.

AU - Lazzeroni, C.

AU - Munday, D. J.

AU - Slater, M. W.

AU - Wotton, S. A.

AU - Arcidiacono, R.

AU - Bocquet, G.

AU - Cabibbo, N.

AU - Ceccucci, A.

AU - Cundy, D.

AU - Falaleev, V.

AU - Fidecaro, M.

AU - Gatignon, L.

AU - Gonidec, A.

AU - Kubischta, W.

AU - Norton, A.

AU - Maier, A.

AU - Patel, M.

AU - Peters, A.

AU - Balev, S.

AU - Frabetti, P. L.

AU - Gersabeck, E.

AU - Goudzovski, E.

AU - Hristov, P.

AU - Kekelidze, V.

AU - Kozhuharov, V.

AU - Litov, L.

AU - Madigozhin, D.

AU - Molokanova, N.

AU - Polenkevich, I.

AU - Potrebenikov, Yu

AU - Stoynev, S.

AU - Zinchenko, A.

AU - Monnier, E.

AU - Swallow, E.

AU - Winston, R.

AU - Rubin, P.

AU - Walker, A.

AU - Baldini, W.

AU - Cotta Ramusino, A.

AU - Dalpiaz, P.

AU - Damiani, C.

AU - Fiorini, M.

AU - Gianoli, A.

AU - Martini, M.

AU - Petrucci, F.

AU - Savrié, M.

AU - Scarpa, M.

AU - Wahl, H.

PY - 2015/6/1

Y1 - 2015/6/1

N2 - A sample of 1.69×107 fully reconstructed π0→γe+e- decay candidates collected by the NA48/2 experiment at CERN in 2003-2004 is analyzed to search for the dark photon (A') production in the π0→γA' decay followed by the prompt A'→e+e- decay. No signal is observed, and an exclusion region in the plane of the dark photon mass mA' and mixing parameter ε2 is established. The obtained upper limits on ε2 are more stringent than the previous limits in the mass range 9MeV/c2±→π±A' decay is also evaluated.

AB - A sample of 1.69×107 fully reconstructed π0→γe+e- decay candidates collected by the NA48/2 experiment at CERN in 2003-2004 is analyzed to search for the dark photon (A') production in the π0→γA' decay followed by the prompt A'→e+e- decay. No signal is observed, and an exclusion region in the plane of the dark photon mass mA' and mixing parameter ε2 is established. The obtained upper limits on ε2 are more stringent than the previous limits in the mass range 9MeV/c2±→π±A' decay is also evaluated.

UR - https://www.scopus.com/pages/publications/84928963376

U2 - 10.1016/j.physletb.2015.04.068

DO - 10.1016/j.physletb.2015.04.068

M3 - Article

SN - 0370-2693

VL - 746

SP - 178

EP - 185

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics