We describe a measurement of the time-integrated luminosity of the data collected by the BABAR experiment at the PEP-II asymmetric-energy e+e- collider at the γ(4S), γ(3S), and γ(2S) resonances and in a continuum region below each resonance. We measure the time-integrated luminosity by counting e+ e-→e+e- and (for the γ(4S) only) e+e-→μ+μ- candidate events, allowing additional photons in the final state. We use data-corrected simulation to determine the cross-sections and reconstruction efficiencies for these processes, as well as the major backgrounds. Due to the large cross-sections of e+e-→e+e- and e+e-→μ+μ-, the statistical uncertainties of the measurement are substantially smaller than the systematic uncertainties. The dominant systematic uncertainties are due to observed differences between data and simulation, as well as uncertainties on the cross-sections. For data collected on the γ(3S) and γ(2S) resonances, an additional uncertainty arises due to γ→ e+e-X background. For data collected off the γ resonances, we estimate an additional uncertainty due to time dependent efficiency variations, which can affect the short off-resonance runs. The relative uncertainties on the luminosities of the on-resonance (off-resonance) samples are 0.43% (0.43%) for the γ(4S), 0.58% (0.72%) for the γ(3S), and 0.68% (0.88%) for the γ(2S).

Lees, J., Poireau, V., Tisserand, V., Grauges, E., Palano, A., Eigen, G., et al. (2013). Time-integrated luminosity recorded by the BABAR detector at the PEP-II e(+)e(-) collider. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION A, ACCELERATORS, SPECTROMETERS, DETECTORS AND ASSOCIATED EQUIPMENT, 726, 203-213 [10.1016/j.nima.2013.04.029].

Time-integrated luminosity recorded by the BABAR detector at the PEP-II e+e- collider

Martinelli M.;CARPINELLI, Massimo;
2013

Abstract

We describe a measurement of the time-integrated luminosity of the data collected by the BABAR experiment at the PEP-II asymmetric-energy e+e- collider at the γ(4S), γ(3S), and γ(2S) resonances and in a continuum region below each resonance. We measure the time-integrated luminosity by counting e+ e-→e+e- and (for the γ(4S) only) e+e-→μ+μ- candidate events, allowing additional photons in the final state. We use data-corrected simulation to determine the cross-sections and reconstruction efficiencies for these processes, as well as the major backgrounds. Due to the large cross-sections of e+e-→e+e- and e+e-→μ+μ-, the statistical uncertainties of the measurement are substantially smaller than the systematic uncertainties. The dominant systematic uncertainties are due to observed differences between data and simulation, as well as uncertainties on the cross-sections. For data collected on the γ(3S) and γ(2S) resonances, an additional uncertainty arises due to γ→ e+e-X background. For data collected off the γ resonances, we estimate an additional uncertainty due to time dependent efficiency variations, which can affect the short off-resonance runs. The relative uncertainties on the luminosities of the on-resonance (off-resonance) samples are 0.43% (0.43%) for the γ(4S), 0.58% (0.72%) for the γ(3S), and 0.68% (0.88%) for the γ(2S).
Articolo in rivista - Articolo scientifico
BABAR; Electron-positron collider; Integrated luminosity; PEP-II;
English
203
213
11
Lees, J., Poireau, V., Tisserand, V., Grauges, E., Palano, A., Eigen, G., et al. (2013). Time-integrated luminosity recorded by the BABAR detector at the PEP-II e(+)e(-) collider. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION A, ACCELERATORS, SPECTROMETERS, DETECTORS AND ASSOCIATED EQUIPMENT, 726, 203-213 [10.1016/j.nima.2013.04.029].
Lees, J; Poireau, V; Tisserand, V; Grauges, E; Palano, A; Eigen, G; Stugu, B; Brown, D; Kerth, L; Kolomensky, Y; Lynch, G; Koch, H; Schroeder, T; Asgeirsson, D; Hearty, C; Mattison, T; Mckenna, J; So, R; Khan, A; Blinov, V; Buzykaev, A; Druzhinin, V; Golubev, V; Kravchenko, E; Onuchin, A; Serednyakov, S; Skoypen, Y; Solodov, E; Todyshev, K; Yushkov, A; Kirkby, D; Lankford, A; Mandelkern, M; Dey, B; Gary, J; Long, O; Vitug, G; Campagnari, C; Franco Sevilla, M; Hong, T; Kovalskyi, D; Richman, J; West, C; Eisner, A; Lockman, W; Martinez, A; Schumm, B; Seiden, A; Chao, D; Cheng, C; Echenard, B; Flood, K; Hitlin, D; Ongmongkolkul, P; Porter, F; Rakitin, A; Andreassen, R; Huard, Z; Meadows, B; Sokoloff, M; Sue, L; Bloom, P; Ford, W; Gaz, A; Nauenberg, U; Smith, J; Wagner, S; Ayad, R; Toki, W; Spaan, B; Schubert, K; Schwierz, R; Bernard, D; Verderi, M; Clark, P; Playfer, S; Bettoni, D; Bozzi, C; Calabrese, R; Cibinetto, G; Fioravanti, E; Garzia, I; Luppi, E; Piemontese, L; Santoro, V; Baldini Ferroliw, R; Calcaterra, A; de Sangro, R; Finocchiaro, G; Patteri, R; Peruzzi, I; Piccolo, M; Rama, M; Zallo, A; Contri, R; Guido, E; Lo Vetere, M; Monge, M; Passaggio, S; Patrignani, C; Robutti, E; Bhuyan, B; Prasad, V; Morii, M; Adametz, A; Uwer, U; Lacker, H; Lueck, T; Dauncey, P; Mallik, U; Chen, C; Cochran, J; Meyer, W; Prell, S; Rubin, A; Gritsan, A; Arnaud, N; Davier, M; Derkach, D; Grosdidier, G; Le Diberder, F; Lutz, A; Malaescu, B; Roudeau, P; Schune, M; Stocchi, A; Wormser, G; Lange, D; Wright, D; Burke, J; Coleman, J; Fry, J; Gabathuler, E; Gamet, R; Hutchcroft, D; Payne, D; Touramanis, C; Bevan, A; Di Lodovico, E; Sacco, R; Sigamani, M; Cowan, G; Brown, D; Davis, C; Denig, A; Fritsch, M; Gradl, W; Griessinger, K; Hafner, A; Prencipe, E; Barlow, R; Lafferty, G; Behn, E; Cenci, R; Hamilton, B; Jawahery, A; Roberts, D; Dallapiccola, C; Cowan, R; Dujmic, D; Sciolla, G; Cheaib, R; Patel, P; Robertson, S; Biassoni, R; Neri, N; Palombo, E; Cremaldi, L; Godang, R; Kroeger, R; Sonnek, R; Summers, D; Nguyen, X; Simard, M; Taras, R; De Nardo, G; Monorchio, D; Onorato, G; Sciacca, C; Martinelli, M; Raven, G; Jessop, C; Losecco, J; Honscheid, K; Kass, R; Brau, J; Frey, R; Sinev, N; Strom, D; Torrence, E; Feltresi, E; Gagliardi, N; Margoni, M; Morandin, M; Posocco, M; Rotondo, M; Simi, G; Simonetto, E; Stroili, R; Akar, S; Ben Haim, E; Bomben, M; Bonneaud, G; Briand, H; Calderini, G; Chauveau, J; Hamon, O; Leruste, P; Marchiori, G; Ocariz, J; Sitt, S; Biasini, M; Manoni, E; Pacetti, S; Rossi, A; Angelini, C; Batignani, G; Bettarini, S; Carpinelli, M; Casarosa, G; Cervelli, A; Forti, F; Giorgi, M; Lusiani, A; Oberhof, B; Paoloni, E; Perez, A; Rizzo, G; Walsh, J; Pegna D., L; Olsen, J; Smith, A; Anulli, E; Faccini, R; Ferrarotto, F; Ferroni, E; Gaspero, M; Gioi L., L; Mazzoni, M; Piredda, G; Buenger, C; Gruenberg, O; Hartmann, T; Leddig, T; Voss, C; Waldi, R; Adye, T; Olaiya, E; Wilson, F; Emery, S; de Monchenault G., H; Vasseur, G; Yeche, C; Aston, D; Bard, D; Benitez, J; Cartaro, C; Convery, M; Dorfan, J; Dubois Felsmann, G; Dunwoodie, W; Ebert, M; Field, R; Fulsom, B; Gabareen, A; Graham, M; Hast, C; Innes, W; Kelsey, M; Kim, P; Kocian, M; Leith, D; Lewis, R; Lindemann, D; Lindquist, B; Luitz, S; Luth, V; Lynch, H; Macfarlane, D; Muller, D; Neal, H; Nelson, S; Perl, M; Pulliam, T; Ratcliff, B; Roodman, A; Salnikov, A; Schindler, R; Snyder, A; Su, D; Sullivan, M; Va'Vra, J; Wagner, A; Wang, W; Wisniewski, W; Wittgen, M; Wright, D; Wulsin, H; Ziegler, V; Park, W; Purohit, M; White, R; Wilson, J; Randle Conde, A; Sekula, S; Bellis, M; Burchat, P; Miyashita, T; Puccio, E; Alam, M; Ernst, J; Gorodeisky, R; Guttman, N; Peimer, D; Soffer, A; Spanier, S; Ritchie, J; Ruland, A; Schwitters, R; Wray, B; Izen, J; Lou, X; Bianchi, F; Gamba, D; Zambito, S; Lanceri, L; Vitale, L; Martinez Vidal, F; Oyanguren, A; Villanueva Perez, R; Ahmed, H; Albert, J; Banerjee, S; Bernlochner, F; Choi, H; King, G; Kowalewski, R; Lewczuk, M; Nugent, I; Roney, J; Sobie, R; Tasneem, N; Gershon, T; Harrison, P; Latham, T; Band, H; Dasu, S; Pan, Y; Prepost, R; Wu, S
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/389237
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