We study the process e+e-→π+π-ηγ, where the photon is radiated from the initial state. About 8000 fully reconstructed events of this process are selected from the BABAR data sample with an integrated luminosity of 469 fb-1. Using the π+π-η invariant mass spectrum, we measure the e+e-→π+π-η cross section in the e+e- center-of-mass energy range from 1.15 to 3.5 GeV. The cross section is well described by the Vector-Meson dominance model with four ρ-like states. We observe 49±9 events of the J/ψ decay to π+π-η and measure the product ΓJ/Ψ→e+e-BJ/Ψ→π+π-η=2.34±0.43stat±0.16syst eV.

Lees, J., Poireau, V., Tisserand, V., Grauges, E., Palano, A., Eigen, G., et al. (2018). Study of the process e+e- →π+π-η using initial state radiation. PHYSICAL REVIEW D, 97(5) [10.1103/physrevd.97.052007].

Study of the process e+e- →π+π-η using initial state radiation

Carpinelli, M.
Membro del Collaboration Group
;
2018

Abstract

We study the process e+e-→π+π-ηγ, where the photon is radiated from the initial state. About 8000 fully reconstructed events of this process are selected from the BABAR data sample with an integrated luminosity of 469 fb-1. Using the π+π-η invariant mass spectrum, we measure the e+e-→π+π-η cross section in the e+e- center-of-mass energy range from 1.15 to 3.5 GeV. The cross section is well described by the Vector-Meson dominance model with four ρ-like states. We observe 49±9 events of the J/ψ decay to π+π-η and measure the product ΓJ/Ψ→e+e-BJ/Ψ→π+π-η=2.34±0.43stat±0.16syst eV.
Articolo in rivista - Articolo scientifico
Scientifica
Physics and Astronomy (miscellaneous)
English
Carpinelli Massimo (BaBar Collaboration)
Lees, J., Poireau, V., Tisserand, V., Grauges, E., Palano, A., Eigen, G., et al. (2018). Study of the process e+e- →π+π-η using initial state radiation. PHYSICAL REVIEW D, 97(5) [10.1103/physrevd.97.052007].
Lees, J; Poireau, V; Tisserand, V; Grauges, E; Palano, A; Eigen, G; Brown, D; Kolomensky, Y; Fritsch, M; Koch, H; Schroeder, T; Hearty, C; Mattison, T; Mckenna, J; So, R; Blinov, V; Buzykaev, A; Druzhinin, V; Golubev, V; Kozyrev, E; Kravchenko, E; Onuchin, A; Serednyakov, S; Skovpen, Y; Solodov, E; Todyshev, K; Lankford, A; Gary, J; Long, O; Eisner, A; Lockman, W; Panduro Vazquez, W; Chao, D; Cheng, C; Echenard, B; Flood, K; Hitlin, D; Kim, J; Li, Y; Miyashita, T; Ongmongkolkul, P; Porter, F; Röhrken, M; Huard, Z; Meadows, B; Pushpawela, B; Sokoloff, M; Sun, L; Smith, J; Wagner, S; 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, I; Piccolo, M; Rotondo, M; Zallo, A; Passaggio, S; Patrignani, C; Lacker, H; Bhuyan, B; Mallik, U; Chen, C; Cochran, J; Prell, S; Gritsan, A; Arnaud, N; Davier, M; Le Diberder, F; Lutz, A; Wormser, G; Lange, D; Wright, D; Coleman, J; Gabathuler, E; Hutchcroft, D; Payne, D; Touramanis, C; Bevan, A; Di Lodovico, F; Sacco, R; Cowan, G; Banerjee, S; Brown, D; Davis, C; Denig, A; Gradl, W; Griessinger, K; Hafner, A; Schubert, K; Barlow, R; Lafferty, G; Cenci, R; Jawahery, A; Roberts, D; Cowan, R; Robertson, S; Seddon, R; Dey, B; Neri, N; Palombo, F; Cheaib, R; Cremaldi, L; Godang, R; Summers, D; Taras, P; De Nardo, G; Sciacca, C; Raven, G; Jessop, C; Losecco, J; Honscheid, K; Kass, R; Gaz, A; Margoni, M; Posocco, M; Simi, G; Simonetto, F; Stroili, R; Akar, S; Ben-Haim, E; Bomben, M; Bonneaud, G; 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, M; Lusiani, A; Oberhof, B; Paoloni, E; Rama, M; Rizzo, G; Walsh, J; Zani, L; Smith, A; 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, F; Emery, S; Vasseur, G; Aston, D; Cartaro, C; Convery, M; Dorfan, J; Dunwoodie, W; Ebert, M; Field, R; Fulsom, B; Graham, M; Hast, C; Innes, W; Kim, P; Leith, D; Luitz, S; Macfarlane, D; Muller, D; Neal, H; Ratcliff, B; Roodman, A; Sullivan, M; Va'Vra, J; Wisniewski, W; Purohit, M; Wilson, J; Randle-Conde, A; Sekula, S; Ahmed, H; Bellis, M; Burchat, P; Puccio, E; Alam, M; Ernst, J; Gorodeisky, R; Guttman, N; Peimer, D; Soffer, A; Spanier, S; Ritchie, J; Schwitters, R; Izen, J; Lou, X; Bianchi, F; De Mori, F; Filippi, A; Gamba, D; Lanceri, L; Vitale, L; Martinez-Vidal, F; Oyanguren, A; Albert, J; Beaulieu, A; Bernlochner, F; King, G; Kowalewski, R; Lueck, T; Nugent, I; Roney, J; Sobie, R; Tasneem, N; Gershon, T; Harrison, P; Latham, T; Prepost, R; Wu, S
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