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Search for Invisible Decays of a Dark Photon Produced in e^{+}e^{-} Collisions at BaBar.

  • Author(s): Lees, JP;
  • Poireau, V;
  • Tisserand, V;
  • Grauges, E;
  • Palano, A;
  • Eigen, G;
  • Brown, DN;
  • Derdzinski, M;
  • Giuffrida, A;
  • Kolomensky, Yu G;
  • Fritsch, M;
  • Koch, H;
  • Schroeder, T;
  • Hearty, C;
  • Mattison, TS;
  • McKenna, JA;
  • So, RY;
  • Blinov, VE;
  • Buzykaev, AR;
  • Druzhinin, VP;
  • Golubev, VB;
  • Kravchenko, EA;
  • Onuchin, AP;
  • Serednyakov, SI;
  • Skovpen, Yu I;
  • Solodov, EP;
  • Todyshev, K Yu;
  • Lankford, AJ;
  • Gary, JW;
  • Long, O;
  • Eisner, AM;
  • Lockman, WS;
  • Panduro Vazquez, W;
  • Chao, DS;
  • Cheng, CH;
  • Echenard, B;
  • Flood, KT;
  • Hitlin, DG;
  • Kim, J;
  • Miyashita, TS;
  • Ongmongkolkul, P;
  • Porter, FC;
  • Röhrken, M;
  • Huard, Z;
  • Meadows, BT;
  • Pushpawela, BG;
  • Sokoloff, MD;
  • Sun, L;
  • Smith, JG;
  • Wagner, SR;
  • Bernard, D;
  • Verderi, M;
  • Bettoni, D;
  • Bozzi, C;
  • Calabrese, R;
  • Cibinetto, G;
  • Fioravanti, E;
  • Garzia, I;
  • Luppi, E;
  • Santoro, V;
  • Calcaterra, A;
  • de Sangro, R;
  • Finocchiaro, G;
  • Martellotti, S;
  • Patteri, P;
  • Peruzzi, IM;
  • Piccolo, M;
  • Rotondo, M;
  • Zallo, A;
  • Passaggio, S;
  • Patrignani, C;
  • Lacker, HM;
  • Bhuyan, B;
  • Mallik, U;
  • Chen, C;
  • Cochran, J;
  • Prell, S;
  • Ahmed, H;
  • Gritsan, AV;
  • Arnaud, N;
  • Davier, M;
  • Le Diberder, F;
  • Lutz, AM;
  • Wormser, G;
  • Lange, DJ;
  • Wright, DM;
  • Coleman, JP;
  • Gabathuler, E;
  • Hutchcroft, DE;
  • Payne, DJ;
  • Touramanis, C;
  • Bevan, AJ;
  • Di Lodovico, F;
  • Sacco, R;
  • Cowan, G;
  • Banerjee, Sw;
  • Brown, DN;
  • Davis, CL;
  • Denig, AG;
  • Gradl, W;
  • Griessinger, K;
  • Hafner, A;
  • Schubert, KR;
  • Barlow, RJ;
  • Lafferty, GD;
  • Cenci, R;
  • Jawahery, A;
  • Roberts, DA;
  • Cowan, R;
  • Robertson, SH;
  • Dey, B;
  • Neri, N;
  • Palombo, F;
  • Cheaib, R;
  • Cremaldi, L;
  • Godang, R;
  • Summers, DJ;
  • Taras, P;
  • De Nardo, G;
  • Sciacca, C;
  • Raven, G;
  • Jessop, CP;
  • LoSecco, JM;
  • Honscheid, K;
  • Kass, R;
  • Gaz, A;
  • Margoni, M;
  • Posocco, M;
  • Simi, G;
  • Simonetto, F;
  • Stroili, R;
  • Akar, S;
  • Ben-Haim, E;
  • Bomben, M;
  • Bonneaud, GR;
  • Calderini, G;
  • Chauveau, J;
  • Marchiori, G;
  • Ocariz, J;
  • Biasini, M;
  • Manoni, E;
  • Rossi, A;
  • Batignani, G;
  • Bettarini, S;
  • Carpinelli, M;
  • Casarosa, G;
  • Chrzaszcz, M;
  • Forti, F;
  • Giorgi, MA;
  • Lusiani, A;
  • Oberhof, B;
  • Paoloni, E;
  • Rama, M;
  • Rizzo, G;
  • Walsh, JJ;
  • Smith, AJS;
  • Anulli, F;
  • Faccini, R;
  • Ferrarotto, F;
  • Ferroni, F;
  • Pilloni, A;
  • Piredda, G;
  • Bünger, C;
  • Dittrich, S;
  • Grünberg, O;
  • Heß, M;
  • Leddig, T;
  • Voß, C;
  • Waldi, R;
  • Adye, T;
  • Wilson, FF;
  • Emery, S;
  • Vasseur, G;
  • Aston, D;
  • Cartaro, C;
  • Convery, MR;
  • Dorfan, J;
  • Dunwoodie, W;
  • Ebert, M;
  • Field, RC;
  • Fulsom, BG;
  • Graham, MT;
  • Hast, C;
  • Innes, WR;
  • Kim, P;
  • Leith, DWGS;
  • Luitz, S;
  • MacFarlane, DB;
  • Muller, DR;
  • Neal, H;
  • Ratcliff, BN;
  • Roodman, A;
  • Sullivan, MK;
  • Va'vra, J;
  • Wisniewski, WJ;
  • Purohit, MV;
  • Wilson, JR;
  • Randle-Conde, A;
  • Sekula, SJ;
  • Bellis, M;
  • Burchat, PR;
  • Puccio, EMT;
  • Alam, MS;
  • Ernst, JA;
  • Gorodeisky, R;
  • Guttman, N;
  • Peimer, DR;
  • Soffer, A;
  • Spanier, SM;
  • Ritchie, JL;
  • Schwitters, RF;
  • Izen, JM;
  • Lou, XC;
  • Bianchi, F;
  • De Mori, F;
  • Filippi, A;
  • Gamba, D;
  • Lanceri, L;
  • Vitale, L;
  • Martinez-Vidal, F;
  • Oyanguren, A;
  • Albert, J;
  • Beaulieu, A;
  • Bernlochner, FU;
  • King, GJ;
  • Kowalewski, R;
  • Lueck, T;
  • Nugent, IM;
  • Roney, JM;
  • Sobie, RJ;
  • Tasneem, N;
  • Gershon, TJ;
  • Harrison, PF;
  • Latham, TE;
  • Prepost, R;
  • Wu, SL;
  • BaBar Collaboration
  • et al.
Abstract

We search for single-photon events in 53  fb^{-1} of e^{+}e^{-} collision data collected with the BABAR detector at the PEP-II B-Factory. We look for events with a single high-energy photon and a large missing momentum and energy, consistent with production of a spin-1 particle A^{'} through the process e^{+}e^{-}→γA^{'}; A^{'}→invisible. Such particles, referred to as "dark photons," are motivated by theories applying a U(1) gauge symmetry to dark matter. We find no evidence for such processes and set 90% confidence level upper limits on the coupling strength of A^{'} to e^{+}e^{-} in the mass range m_{A^{'}}≤8  GeV. In particular, our limits exclude the values of the A^{'} coupling suggested by the dark-photon interpretation of the muon (g-2)_{μ} anomaly, as well as a broad range of parameters for the dark-sector models.

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