First Search for Exotic Z Boson Decays into Photons and Neutral Pions in Hadron Collisions
Creators: name: CDF Collaboration
name: Aaltonen, T.
name: Amerio, S.
name: Amidei, D.
name: Anastassov, A.
name: Annovi, A.
name: Antos, J.
name: Apollinari, G.
name: Appel, J. A.
name: Arisawa, T.
name: Artikov, A.
name: Asaadi, J.
name: Ashmanskas, W.
name: Auerbach, B.
name: Aurisano, A.
name: Azfar, F.
name: Badgett, W.
name: Bae, T.
name: Barbaro-Galtieri, A.
name: Barnes, V. E.
name: Barnett, B. A.
name: Barria, P.
name: Bartos, P.
name: Bauce, M.
name: Bedeschi, F.
name: Behari, S.
name: Bellettini, G.
name: Bellinger, J.
name: Benjamin, D.
name: Beretvas, A.
name: Bhatti, A.
name: Bland, K. R.
name: Blumenfeld, B.
name: Bocci, A.
name: Bodek, A.
name: Bortoletto, D.
name: Boudreau, J.
name: Boveia, A.
name: Brigliadori, L.
name: Bromberg, C.
name: Brucken, E.
name: Budagov, J.
name: Budd, H. S.
name: Burkett, K.
name: Busetto, G.
name: Bussey, P.
name: Butti, P.
name: Buzatu, A.
name: Calamba, A.
name: Camarda, S.
name: Campanelli, M.
name: Canelli, F.
name: Carls, B.
name: Carlsmith, D.
name: Carosi, R.
name: Carrillo, S.
name: Casal, B.
name: Casarsa, M.
name: Castro, A.
name: Catastini, P.
name: Cauz, D.
name: Cavaliere, V.
name: Cavalli-Sforza, M.
name: Cerri, A.
name: Cerrito, L.
name: Chen, Y. C.
name: Chertok, M.
name: Chiarelli, G.
name: Chlachidze, G.
name: Cho, K.
name: Chokheli, D.
name: Clark, A.
name: Clarke, C.
name: Convery, M. E.
name: Conway, J.
name: Corbo, M.
name: Cordelli, M.
name: Cox, C. A.
name: Cox, D. J.
name: Cremonesi, M.
name: Cruz, D.
name: Cuevas, J.
name: Culbertson, R.
name: d'Ascenzo, N.
name: Datta, M.
name: de Barbaro, P.
name: Demortier, L.
name: Deninno, M.
name: D'Errico, M.
name: Devoto, F.
name: Di Canto, A.
name: Di Ruzza, B.
name: Dittmann, J. R.
name: Donati, S.
name: D'Onofrio, M.
name: Dorigo, M.
name: Driutti, A.
name: Ebina, K.
name: Edgar, R.
name: Elagin, A.
name: Erbacher, R.
name: Errede, S.
name: Esham, B.
name: Farrington, S.
name: Ramos, J. P. Fernández
name: Field, R.
name: Flanagan, G.
name: Forrest, R.
name: Franklin, M.
name: Freeman, J. C.
name: Frisch, H.
name: Funakoshi, Y.
name: Galloni, C.
name: Garfinkel, A. F.
name: Garosi, P.
name: Gerberich, H.
name: Gerchtein, E.
name: Giagu, S.
name: Giakoumopoulou, V.
name: Gibson, K.
name: Ginsburg, C. M.
name: Giokaris, N.
name: Giromini, P.
name: Giurgiu, G.
name: Glagolev, V.
name: Glenzinski, D.
name: Gold, M.
name: Goldin, D.
name: Golossanov, A.
name: Gomez, G.
name: Gomez-Ceballos, G.
name: Goncharov, M.
name: López, O. González
name: Gorelov, I.
name: Goshaw, A. T.
name: Goulianos, K.
name: Gramellini, E.
name: Grinstein, S.
name: Grosso-Pilcher, C.
name: Group, R. C.
name: da Costa, J. Guimaraes
name: Hahn, S. R.
name: Han, J. Y.
name: Happacher, F.
name: Hara, K.
name: Hare, M.
name: Harr, R. F.
name: Harrington-Taber, T.
name: Hatakeyama, K.
name: Hays, C.
name: Heinrich, J.
name: Herndon, M.
name: Hocker, A.
name: Hong, Z.
name: Hopkins, W.
name: Hou, S.
name: Hughes, R. E.
name: Husemann, U.
name: Hussein, M.
name: Huston, J.
name: Introzzi, G.
name: Iori, M.
name: Ivanov, A.
name: James, E.
name: Jang, D.
name: Jayatilaka, B.
name: Jeon, E. J.
name: Jindariani, S.
name: Jones, M.
name: Joo, K. K.
name: Jun, S. Y.
name: Junk, T. R.
name: Kambeitz, M.
name: Kamon, T.
name: Karchin, P. E.
name: Kasmi, A.
name: Kato, Y.
name: Ketchum, W.
name: Keung, J.
name: Kilminster, B.
name: Kim, D. H.
name: Kim, H. S.
name: Kim, J. E.
name: Kim, M. J.
name: Kim, S. H.
name: Kim, S. B.
name: Kim, Y. J.
name: Kim, Y. K.
name: Kimura, N.
name: Kirby, M.
name: Knoepfel, K.
name: Kondo, K.
name: Kong, D. J.
name: Konigsberg, J.
name: Kotwal, A. V.
name: Kreps, M.
name: Kroll, J.
name: Kruse, M.
name: Kuhr, T.
name: Kurata, M.
name: Laasanen, A. T.
name: Lammel, S.
name: Lancaster, M.
name: Lannon, K.
name: Latino, G.
name: Lee, H. S.
name: Lee, J. S.
name: Leo, S.
name: Leone, S.
name: Lewis, J. D.
name: Limosani, A.
name: Lipeles, E.
name: Lister, A.
name: Liu, H.
name: Liu, Q.
name: Liu, T.
name: Lockwitz, S.
name: Loginov, A.
name: Lucchesi, D.
name: Lucà, A.
name: Lueck, J.
name: Lujan, P.
name: Lukens, P.
name: Lungu, G.
name: Lys, J.
name: Lysak, R.
name: Madrak, R.
name: Maestro, P.
name: Malik, S.
name: Manca, G.
name: Manousakis-Katsikakis, A.
name: Marchese, L.
name: Margaroli, F.
name: Marino, P.
name: Martínez, M.
name: Matera, K.
name: Mattson, M. E.
name: Mazzacane, A.
name: Mazzanti, P.
name: McNulty, R.
name: Mehta, A.
name: Mehtala, P.
name: Mesropian, C.
name: Miao, T.
name: Mietlicki, D.
name: Mitra, A.
name: Miyake, H.
name: Moed, S.
name: Moggi, N.
name: Moon, C. S.
name: Moore, R.
name: Morello, M. J.
name: Mukherjee, A.
name: Muller, Th.
name: Murat, P.
name: Mussini, M.
name: Nachtman, J.
name: Nagai, Y.
name: Naganoma, J.
name: Nakano, I.
name: Napier, A.
name: Nett, J.
name: Neu, C.
name: Nigmanov, T.
name: Nodulman, L.
name: Noh, S. Y.
name: Norniella, O.
name: Oakes, L.
name: Oh, S. H.
name: Oh, Y. D.
name: Oksuzian, I.
name: Okusawa, T.
name: Orava, R.
name: Ortolan, L.
name: Pagliarone, C.
name: Palencia, E.
name: Palni, P.
name: Papadimitriou, V.
name: Parker, W.
name: Pauletta, G.
name: Paulini, M.
name: Paus, C.
name: Phillips, T. J.
name: Piacentino, G.
name: Pianori, E.
name: Pilot, J.
name: Pitts, K.
name: Plager, C.
name: Pondrom, L.
name: Poprocki, S.
name: Potamianos, K.
name: Pranko, A.
name: Prokoshin, F.
name: Ptohos, F.
name: Punzi, G.
name: Ranjan, N.
name: Fernández, I. Redondo
name: Renton, P.
name: Rescigno, M.
name: Rimondi, F.
name: Ristori, L.
name: Robson, A.
name: Rodriguez, T.
name: Rolli, S.
name: Ronzani, M.
name: Roser, R.
name: Rosner, J. L.
name: Ruffini, F.
name: Ruiz, A.
name: Russ, J.
name: Rusu, V.
name: Sakumoto, W. K.
name: Sakurai, Y.
name: Santi, L.
name: Sato, K.
name: Saveliev, V.
name: Savoy-Navarro, A.
name: Schlabach, P.
name: Schmidt, E. E.
name: Schwarz, T.
name: Scodellaro, L.
name: Scuri, F.
name: Seidel, S.
name: Seiya, Y.
name: Semenov, A.
name: Sforza, F.
name: Shalhout, S. Z.
name: Shears, T.
name: Shepard, P. F.
name: Shimojima, M.
name: Shochet, M.
name: Shreyber-Tecker, I.
name: Simonenko, A.
name: Sliwa, K.
name: Smith, J. R.
name: Snider, F. D.
name: Song, H.
name: Sorin, V.
name: Denis, R. St.
name: Stancari, M.
name: Stentz, D.
name: Strologas, J.
name: Sudo, Y.
name: Sukhanov, A.
name: Suslov, I.
name: Takemasa, K.
name: Takeuchi, Y.
name: Tang, J.
name: Tecchio, M.
name: Teng, P. K.
name: Thom, J.
name: Thomson, E.
name: Thukral, V.
name: Toback, D.
name: Tokar, S.
name: Tollefson, K.
name: Tomura, T.
name: Tonelli, D.
name: Torre, S.
name: Torretta, D.
name: Totaro, P.
name: Trovato, M.
name: Ukegawa, F.
name: Uozumi, S.
name: Velev, G.
name: Vellidis, C.
name: Vernieri, C.
name: Vidal, M.
name: Vilar, R.
name: Vizán, J.
name: Vogel, M.
name: Volpi, G.
name: Vázquez, F.
name: Wagner, P.
name: Wallny, R.
name: Wang, S. M.
name: Waters, D.
name: Wester, W. C.
name: Whiteson, D.
name: Wicklund, A. B.
name: Wilbur, S.
name: Williams, H. H.
name: Wilson, J. S.
name: Wilson, P.
name: Winer, B. L.
name: Wittich, P.
name: Wolbers, S.
name: Wolfe, H.
name: Wright, T.
name: Wu, X.
name: Wu, Z.
name: Yamamoto, K.
name: Yamato, D.
name: Yang, T.
name: Yang, U. K.
name: Yang, Y. C.
name: Yao, W. -M.
name: Yeh, G. P.
name: Yi, K.
name: Yoh, J.
name: Yorita, K.
name: Yoshida, T.
name: Yu, G. B.
name: Yu, I.
name: Zanetti, A. M.
name: Zeng, Y.
name: Zhou, C.
name: Zucchelli, S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: A search for forbidden and exotic Z boson decays in the diphoton mass spectrum is presented for the first time in hadron collisions, based on data corresponding to 10.0 fb^-1 of integrated luminosity from proton-antiproton collisions at sqrt(s) = 1.96 TeV collected by the CDF experiment. No evidence of signal is observed, and 95% credibility level Bayesian upper limits are set on the branching ratios of decays of the Z boson to a photon and neutral pion (which is detected as a photon), a pair of photons, and a pair of neutral pions. The observed branching ratio limits are 2.01 x 10^-5 for Z to π^0γ, 1.46 x 10^-5 for Z to γγ, and 1.52 x 10^-5 for Z to π^0π^0. The Z to π^0γ and Z to γγ limits improve by factors of 2.6 and 3.6, respectively, the most stringent results from other experiments. The Z to π^0π^0 branching ratio limit is the first experimental result on this decay.
description: Published in Physical Review Letters