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1. The Mu2e e.m. Calorimeter: Crystals and SiPMs Production Status

Author: S. Donati, M. Corradi, M. Ricci, T. S. Miyashita, M. Cordelli, G. Tassielli, S. Miscetti, I. I. Vasilyev, Gianantonio Pezzullo, F. Raffaelli, Luca Morescalchi, F. Happacher, E. Pedreschi, V. Glagolev, D. Caiulo, D. G. Hitlin, Z. Usubov, F. Grancagnolo, S. Giovannella, Yu.I. Davydov, F. Cervelli, F. Colao, B. Echenard, A. Saputi, E. Diociaiuti, S. Di Falco, J. Budagov, Ren-Yuan Zhu, N. Atanov, P. Murat, F. C. Porter, V. A. Baranov, F. Spinella, M. Martini, I. Sarra, R. Donghia, V. Tereshchenko, Atanov, N., Baranov, V., Budagov, J., Caiulo, D., Cervelli, F., Colao, F., Cordelli, M., Corradi, M., Davydov, Y. I., Falco, S. D., Diociaiuti, E., Donati, S., Donghia, R., Echenard, B., Giovannella, S., Glagolev, V., Grancagnolo, F., Happacher, F., Hitlin, D., Martini, M., Miscetti, S., Miyashita, T., Morescalchi, L., Murat, P., Pedreschi, E., Pezzullo, G., Porter, F., Raffaelli, F., Ricci, M., Saputi, A., Sarra, I., Spinella, F., Tassielli, G., Tereshchenko, V., Usubov, Z., Vasilyev, I. I., and Zhu, R. Y.
Subjects: Physics, Nuclear and High Energy Physics, Muon, Calorimeter (particle physics), Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, Detector, Calorimetry, 01 natural sciences, Particle identification, Nuclear physics, Mu2e, Silicon photomultiplier, Nuclear Energy and Engineering, 0103 physical sciences, pure CsI crystals, silicon photomultipliers (SiPMs), High Energy Physics::Experiment, Fermilab, pure CsI crystal, Electrical and Electronic Engineering, Lepton
Abstract: The Mu2e experiment at Fermilab will search for the charged lepton flavor violating neutrino-less conversion of a negative muon into an electron in the field of an aluminum nucleus [1] , [2] . The Mu2e detector is comprised of a tracker, an electromagnetic calorimeter, and an external veto for cosmic rays. The calorimeter plays an important role in providing excellent particle identification capabilities, a fast and online trigger filter while aiding the track reconstruction capabilities. The calorimeter requirements are to provide a large acceptance for 100-MeV electrons and reach: 1) a time resolution better than 0.5 ns at 100 MeV; 2) an energy resolution O(10%) at 100 MeV; and 3) a position resolution of about 1 cm. The calorimeter consists of two disks, each one made of 674 pure CsI crystals readout by two large-area $2 \times 3$ array of UV-extended silicon photomultipliers (Mu2e SiPMs) of $6\,\,\times6$ mm2 dimensions. A large-scale prototype has been constructed with 51 preproduction crystals readout by 102 Mu2e SiPMs. It has been tested at the beam test facility in Frascati, demonstrating satisfying results compared to the Mu2e requirements. At the moment of writing, the crystals production phase is halfway through the work, while the SiPM production has been completed. An overview of the characterization tests is also reported, together with a description of the final calorimeter design.
Published: 2020

2. Search for an Axionlike Particle in B Meson Decays

Author: J P, Lees, V, Poireau, V, Tisserand, E, Grauges, A, Palano, G, Eigen, D N, Brown, Yu G, Kolomensky, M, Fritsch, H, Koch, T, Schroeder, R, Cheaib, C, Hearty, T S, Mattison, J A, McKenna, R Y, So, V E, Blinov, A R, Buzykaev, V P, Druzhinin, V B, Golubev, E A, Kozyrev, E A, Kravchenko, A P, Onuchin, S I, Serednyakov, Yu I, Skovpen, E P, Solodov, K Yu, Todyshev, A J, Lankford, B, Dey, J W, Gary, O, Long, A M, Eisner, W S, Lockman, W, Panduro Vazquez, D S, Chao, C H, Cheng, B, Echenard, K T, Flood, D G, Hitlin, J, Kim, Y, Li, D X, Lin, S, Middleton, T S, Miyashita, P, Ongmongkolkul, J, Oyang, F C, Porter, M, Röhrken, Z, Huard, B T, Meadows, B G, Pushpawela, M D, Sokoloff, L, Sun, J G, Smith, S R, Wagner, D, Bernard, M, Verderi, D, Bettoni, C, Bozzi, R, Calabrese, G, Cibinetto, E, Fioravanti, I, Garzia, E, Luppi, V, Santoro, A, Calcaterra, R, de Sangro, G, Finocchiaro, S, Martellotti, P, Patteri, I M, Peruzzi, M, Piccolo, M, Rotondo, A, Zallo, S, Passaggio, C, Patrignani, I, Flood, N, Nguyen, B J, Shuve, H M, Lacker, B, Bhuyan, U, Mallik, C, Chen, J, Cochran, S, Prell, A V, Gritsan, N, Arnaud, M, Davier, F, Le Diberder, A M, Lutz, G, Wormser, D J, Lange, D M, Wright, J P, Coleman, E, Gabathuler, D E, Hutchcroft, D J, Payne, C, Touramanis, A J, Bevan, F, Di Lodovico, R, Sacco, G, Cowan, Sw, Banerjee, C L, Davis, A G, Denig, W, Gradl, K, Griessinger, A, Hafner, K R, Schubert, R J, Barlow, G D, Lafferty, R, Cenci, A, Jawahery, D A, Roberts, R, Cowan, S H, Robertson, R M, Seddon, N, Neri, F, Palombo, L, Cremaldi, R, Godang, D J, Summers, P, Taras, G, De Nardo, C, Sciacca, G, Raven, C P, Jessop, J M, LoSecco, K, Honscheid, R, Kass, A, Gaz, M, Margoni, M, Posocco, G, Simi, F, Simonetto, R, Stroili, S, Akar, E, Ben-Haim, M, Bomben, G R, Bonneaud, G, Calderini, J, Chauveau, G, Marchiori, J, Ocariz, M, Biasini, E, Manoni, A, Rossi, G, Batignani, S, Bettarini, M, Carpinelli, G, Casarosa, M, Chrzaszcz, M, De Nuccio, F, Forti, M A, Giorgi, A, Lusiani, B, Oberhof, E, Paoloni, M, Rama, G, Rizzo, J J, Walsh, L, Zani, A J S, Smith, F, Anulli, R, Faccini, F, Ferrarotto, F, Ferroni, A, Pilloni, G, Piredda, C, Bünger, S, Dittrich, O, Grünberg, M, Heß, T, Leddig, C, Voß, R, Waldi, T, Adye, F F, Wilson, S, Emery, G, Vasseur, D, Aston, C, Cartaro, M R, Convery, J, Dorfan, W, Dunwoodie, M, Ebert, R C, Field, B G, Fulsom, M T, Graham, C, Hast, W R, Innes, P, Kim, D W G S, Leith, S, Luitz, D B, MacFarlane, D R, Muller, H, Neal, B N, Ratcliff, A, Roodman, M K, Sullivan, J, Va'vra, W J, Wisniewski, M V, Purohit, J R, Wilson, A, Randle-Conde, S J, Sekula, H, Ahmed, N, Tasneem, M, Bellis, P R, Burchat, E M T, Puccio, M S, Alam, J A, Ernst, R, Gorodeisky, N, Guttman, D R, Peimer, A, Soffer, S M, Spanier, J L, Ritchie, R F, Schwitters, J M, Izen, X C, Lou, F, Bianchi, F, De Mori, A, Filippi, D, Gamba, L, Lanceri, L, Vitale, F, Martinez-Vidal, A, Oyanguren, J, Albert, A, Beaulieu, F U, Bernlochner, G J, King, R, Kowalewski, T, Lueck, C, Miller, I M, Nugent, J M, Roney, R J, Sobie, T J, Gershon, P F, Harrison, T E, Latham, R, Prepost, S L, Wu, Lees, J, Poireau, V, Tisserand, V, Grauges, E, Palano, A, Eigen, G, Brown, D, Kolomensky, Y, Fritsch, M, Koch, H, Schroeder, T, Cheaib, R, 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, Dey, B, 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, Lin, D, Middleton, S, Miyashita, T, Ongmongkolkul, P, Oyang, J, 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, Flood, I, Nguyen, N, Shuve, B, 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, 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, Neri, N, Palombo, F, 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, De Nuccio, 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, Tasneem, N, 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, Miller, C, Nugent, I, Roney, J, Sobie, R, Gershon, T, Harrison, P, Latham, T, Prepost, R, Wu, S, Lees, J P, Brown, D N, Kolomensky, Yu G, Mattison, T S, McKenna, J A, So, R Y, Blinov, V E, Buzykaev, A R, Druzhinin, V P, Golubev, V B, Kozyrev, E A, Kravchenko, E A, Onuchin, A P, Serednyakov, S I, Skovpen, Yu I, Solodov, E P, Todyshev, K Yu, Lankford, A J, Gary, J W, Eisner, A M, Lockman, W S, Chao, D S, Cheng, C H, Flood, K T, Hitlin, D G, Lin, D X, Miyashita, T S, Porter, F C, Meadows, B T, Pushpawela, B G, Sokoloff, M D, Smith, J G, Wagner, S R, Peruzzi, I M, Shuve, B J, Lacker, H M, Gritsan, A V, Lutz, A M, Lange, D J, Wright, D M, Coleman, J P, Hutchcroft, D E, Payne, D J, Bevan, A J, Banerjee, Sw, Davis, C L, Denig, A G, Schubert, K R, Barlow, R J, Lafferty, G D, Roberts, D A, Robertson, S H, Seddon, R M, Summers, D J, Jessop, C P, LoSecco, J M, Bonneaud, G R, Giorgi, M A, Walsh, J J, Smith, A J S, Wilson, F F, Convery, M R, Field, R C, Fulsom, B G, Graham, M T, Innes, W R, Leith, D W G S, MacFarlane, D B, Muller, D R, Ratcliff, B N, Sullivan, M K, Va'vra, J, Wisniewski, W J, Purohit, M V, Wilson, J R, Sekula, S J, Burchat, P R, Puccio, E M T, Alam, M S, Ernst, J A, Peimer, D R, Spanier, S M, Ritchie, J L, Schwitters, R F, Izen, J M, Lou, X C, Bernlochner, F U, King, G J, Nugent, I M, Roney, J M, Sobie, R J, Gershon, T J, Harrison, P F, Latham, T E, Wu, S L, Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE (UMR_7585)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, BaBar, Lees, J. P., Poireau, V., Tisserand, V., Grauges, E., Palano, A., Eigen, G., Brown, D. N., Kolomensky, Y. G., Fritsch, M., Koch, H., Schroeder, T., Cheaib, R., Hearty, C., Mattison, T. S., Mckenna, J. A., So, R. Y., Blinov, V. E., Buzykaev, A. R., Druzhinin, V. P., Golubev, V. B., Kozyrev, E. A., Kravchenko, E. A., Onuchin, A. P., Serednyakov, S. I., Skovpen, Y. I., Solodov, E. P., Todyshev, K. Y., Lankford, A. J., Dey, B., Gary, J. W., Long, O., Eisner, A. M., Lockman, W. S., Panduro Vazquez, W., Chao, D. S., Cheng, C. H., Echenard, B., Flood, K. T., Hitlin, D. G., Kim, J., Li, Y., Lin, D. X., Middleton, S., Miyashita, T. S., Ongmongkolkul, P., Oyang, J., Porter, F. C., Rohrken, M., Huard, Z., Meadows, B. T., Pushpawela, B. G., Sokoloff, M. D., Sun, L., Smith, J. G., Wagner, S. R., 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. M., Piccolo, M., Rotondo, M., Zallo, A., Passaggio, S., Patrignani, C., Flood, I., Nguyen, N., Shuve, B. J., Lacker, H. M., Bhuyan, B., Mallik, U., Chen, C., Cochran, J., Prell, S., Gritsan, A. V., Arnaud, N., Davier, M., Le Diberder, F., Lutz, A. M., Wormser, G., Lange, D. J., Wright, D. M., Coleman, J. P., Gabathuler, E., Hutchcroft, D. E., Payne, D. J., Touramanis, C., Bevan, A. J., Di Lodovico, F., Sacco, R., Cowan, G., Banerjee, S. W., Davis, C. L., Denig, A. G., Gradl, W., Griessinger, K., Hafner, A., Schubert, K. R., Barlow, R. J., Lafferty, G. D., Cenci, R., Jawahery, A., Roberts, D. A., Cowan, R., Robertson, S. H., Seddon, R. M., Neri, N., Palombo, F., Cremaldi, L., Godang, R., Summers, D. J., Taras, P., De Nardo, G., Sciacca, C., Raven, G., Jessop, C. P., Losecco, J. M., 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. R., Calderini, G., Chauveau, J., Marchiori, G., Ocariz, J., Biasini, M., Manoni, E., Rossi, A., Batignani, G., Bettarini, S., Carpinelli, M., Casarosa, G., Chrzaszcz, M., De Nuccio, M., Forti, F., Giorgi, M. A., Lusiani, A., Oberhof, B., Paoloni, E., Rama, M., Rizzo, G., Walsh, J. J., Zani, L., Smith, A. J. S., Anulli, F., Faccini, R., Ferrarotto, F., Ferroni, F., Pilloni, A., Piredda, G., Bunger, C., Dittrich, S., Grunberg, O., Hess, M., Leddig, T., Voss, C., Waldi, R., Adye, T., Wilson, F. F., Emery, S., Vasseur, G., Aston, D., Cartaro, C., Convery, M. R., Dorfan, J., Dunwoodie, W., Ebert, M., Field, R. C., Fulsom, B. G., Graham, M. T., Hast, C., Innes, W. R., Kim, P., Leith, D. W. G. S., Luitz, S., Macfarlane, D. B., Muller, D. R., Neal, H., Ratcliff, B. N., Roodman, A., Sullivan, M. K., Va'Vra, J., Wisniewski, W. J., Purohit, M. V., Wilson, J. R., Randle-Conde, A., Sekula, S. J., Ahmed, H., Tasneem, N., Bellis, M., Burchat, P. R., Puccio, E. M. T., Alam, M. S., Ernst, J. A., Gorodeisky, R., Guttman, N., Peimer, D. R., Soffer, A., Spanier, S. M., Ritchie, J. L., Schwitters, R. F., Izen, J. M., Lou, X. C., Bianchi, F., De Mori, F., Filippi, A., Gamba, D., Lanceri, L., Vitale, L., Martinez-Vidal, F., Oyanguren, A., Albert, J., Beaulieu, A., Bernlochner, F. U., King, G. J., Kowalewski, R., Lueck, T., Miller, C., Nugent, I. M., Roney, J. M., Sobie, R. J., Gershon, T. J., Harrison, P. F., Latham, T. E., Prepost, R., Wu, S. L., Mckenna, J A, Losecco, J M, and Macfarlane, D B
Subjects: flavor changing, General Physics and Astronomy, B meson, High Energy Physics - Experiment, current: constraint, High Energy Physics - Experiment (hep-ex), [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], QC, B meson decay, scale: electroweak interaction, article, electron positron: colliding beams, mass dependence, The standard model, Confidence level, PEP-II, axion-like particles, axion: mass, photon: pair production, boson, axionlike particles, FOS: Physical sciences, coupling constant: upper limit, Bottom mesons, electron positron: annihilation, meson, Physics::Geophysics, BABAR experiment, B: rare decay, Bosons, Electroweak boson, axionlike particle, High Energy Physics::Phenomenology, ALPs, Particle ma, Upper limit, Bottom meson, Rare decays, SLAC PEP Stor, current, axion: radiative decay, HEP, Electroweak scale, Germanium compound, Orders of magnitude, Rare decay, axion, Hadron, BaBar, coupling: (axion 2photon), High Energy Physics::Experiment, experimental results
Abstract: Axion-like particles (ALPs) are predicted in many extensions of the Standard Model, and their masses can naturally be well below the electroweak scale. In the presence of couplings to electroweak bosons, these particles could be emitted in flavor-changing $B$ meson decays. We report herein a search for an ALP, $a$, in the reaction $B^\pm\rightarrow K^\pm a$, $a\rightarrow\gamma\gamma$ using data collected by the BABAR experiment at SLAC. No significant signal is observed, and 90% confidence level upper limits on the ALP coupling to electroweak bosons are derived as a function of ALP mass, improving current constraints by several orders of magnitude in the range $0.175\,\,\mathrm{GeV} < m_a < 4.78\,\,\mathrm{GeV}$., Comment: 11 pages, 8 figures, submitted to Phys. Rev. Lett
Published: 2022

3. Light meson spectroscopy from Dalitz plot analyses of ηc decays to η′K+K− , η′π+π− , and ηπ+π− produced in two-photon interactions

Author: Z. C. Huard, U. Mallik, Yu. I. Skovpen, T. S. Miyashita, N. Neri, F. Anulli, E. Grauges, G. R. Bonneaud, Mario Giorgi, J. Dorfan, E. Fioravanti, F. Palombo, T. Lueck, Alessandro Gaz, B. N. Ratcliff, G. J. King, Elisa Manoni, F. Di Lodovico, A. M. Rossi, M. Verderi, N. Arnaud, J. L. Ritchie, L. M. Cremaldi, R. Y. So, A. Roodman, M. Rotondo, D. J. Payne, J. W. Gary, M. Ebert, S. H. Robertson, S. Bettarini, R. M. Seddon, F. Ferroni, R. Cenci, G. De Nardo, A. J. Bevan, Herbert Koch, Crisostomo Sciacca, D. Aston, A. Zallo, J. B. Kim, G. Rizzo, P. F. Harrison, D. G. Hitlin, W. J. Wisniewski, N. Tasneem, M. Fritsch, B. T. Meadows, G. Raven, K. Griessinger, S. M. Spanier, Tim Adye, A. Oyanguren, Stephen Robert Wagner, Aidan Randle-Conde, R. D. Kass, R. C. Field, F. Forti, K. R. Schubert, S. Passaggio, M. D. Sokoloff, P. R. Burchat, Yu. G. Kolomensky, G. Finocchiaro, J. P. Lees, Simon Akar, M. S. Alam, R. Prepost, J. M. Roney, C. Hast, S. Luitz, D. J. Lange, S. Martellotti, G. Piredda, W. Panduro Vazquez, D. E. Hutchcroft, Babar, J. Ocariz, I. M. Peruzzi, J. G. Smith, D. B. MacFarlane, H. A. Neal, G. Wormser, A. Calcaterra, C. Bünger, Maurizio Biasini, D. R. Muller, G. Casarosa, T. Leddig, Tamara Vazquez Schroeder, J. M. Izen, P. Ongmongkolkul, B. Bhuyan, B. Oberhof, V. E. Blinov, J. Cochran, E. A. Kravchenko, M. Piccolo, W. S. Lockman, B. G. Fulsom, T. J. Gershon, G. Vasseur, S. I. Serednyakov, F. Bianchi, I. M. Nugent, R. Cheaib, T. S. Mattison, C. Cartaro, Y. B. Li, Owen Rosser Long, D. W. G. S. Leith, G. Batignani, S. J. Sekula, M. R. Convery, A. Jawahery, V. Santoro, B. G. Pushpawela, W. Dunwoodie, Marco Bomben, S. Dittrich, D. S. Chao, R. Waldi, R. Gorodeisky, D. N. Brown, F. F. Wilson, Douglas Wright, D. A. Roberts, L. Zani, J. A. Ernst, L. Sun, T. E. Latham, M. Carpinelli, V. B. Golubev, C. P. Jessop, G. Calderini, Martino Margoni, M. Davier, J. M. LoSecco, M. K. Sullivan, S. Emery, E. Ben-Haim, E. A. Kozyrev, C. Touramanis, A. M. Lutz, E. Paoloni, B. Dey, M. T. Graham, A. Hafner, O. Grünberg, W. Gradl, D. X. Lin, M. Rama, J. Va’vra, Hamad Ahmed, R. Kowalewski, J. A. McKenna, A. P. Onuchin, E. M. T. Puccio, G. Cibinetto, A. V. Gritsan, Alessandro Pilloni, A. R. Buzykaev, D. R. Peimer, K. T. Flood, A. Beaulieu, M. Röhrken, A. Palano, R. Sacco, N. Guttman, G. Marchiori, R. Faccini, F. Ferrarotto, A. J. Lankford, F. Le Diberder, F. De Mori, P. Patteri, L. Lanceri, A. Filippi, Denis Bernard, A. J. S. Smith, R. Cowan, B. Echenard, J. Chauveau, V. P. Druzhinin, C. Bozzi, G. Cowan, K. Honscheid, R. J. Barlow, M. Posocco, D. Gamba, M. Bellis, James R. Wilson, Brian Shuve, R. Calabrese, G. Eigen, K. Yu Todyshev, R. Stroili, F. Simonetto, J. J. Walsh, G. D. Lafferty, X. C. Lou, J. Oyang, R. Godang, Cheng Chen, H. M. Lacker, M. Heß, C. Hearty, D. J. Summers, S. Prell, I. Garzia, R. J. Sobie, V. Poireau, A. Soffer, L. Vitale, F. Martinez-Vidal, A. Lusiani, E. Luppi, P. Taras, E. P. Solodov, J. P. Coleman, A. G. Denig, C. L. Davis, R. F. Schwitters, A. M. Eisner, Peter S. Kim, M. V. Purohit, J. Albert, C. H. Cheng, R. de Sangro, S. L. Wu, E. Gabathuler, W. R. Innes, F. C. Porter, M. Chrzaszcz, C. Voß, Sw. Banerjee, G. Simi, D. Bettoni, Florian Urs Bernlochner, C. Patrignani, and V. Tisserand
Subjects: Physics, Meson, 010308 nuclear & particles physics, Branching fraction, Glueball, Electron–positron annihilation, Resonance, Dalitz plot, 01 natural sciences, Crystallography, 0103 physical sciences, 010306 general physics, Spectroscopy, Scalar meson
Abstract: We study the processes γ γ → η c → η ′ K + K - , η ′ π + π - , and η π + π - using a data sample of 519 fb - 1 recorded with the BABAR detector operating at the SLAC PEP-II asymmetric-energy e + e - collider at center-of-mass energies at and near the ϒ ( n S ) ( n = 2 , 3, 4) resonances. This is the first observation of the decay η c → η ′ K + K - and we measure the branching fraction Γ ( η c → η ′ K + K - ) / ( Γ ( η c → η ′ π + π - ) = 0.644 ± 0.03 9 stat ± 0.03 2 sys . Significant interference is observed between γ γ → η c → η π + π - and the nonresonant two-photon process γ γ → η π + π - . A Dalitz plot analysis is performed of η c decays to η ′ K + K - , η ′ π + π - , and η π + π - . Combined with our previous analysis of η c → K K ¯ π , we measure the K 0 * ( 1430 ) parameters and the ratio between its η ′ K and π K couplings. The decay η c → η ′ π + π - is dominated by the f 0 ( 2100 ) resonance, also observed in J / ψ radiative decays. A new a 0 ( 1700 ) → η π resonance is observed in the η c → η π + π - channel. We also compare η c decays to η and η ′ final states in association with scalar mesons as they relate to the identification of the scalar glueball.
Published: 2021

4. Study of the reactions e+e−→2(π+π−)π0π0π0 and 2(π+π−)π0π0η at center-of-mass energies from threshold to 4.5 GeV using initial-state radiation

Author: R. Cenci, A. Zallo, J. B. Kim, M. Fritsch, E. Grauges, Mario Giorgi, A. V. Gritsan, D. B. MacFarlane, C. H. Cheng, Simon Akar, R. Prepost, E. A. Kravchenko, J. L. Ritchie, G. Vasseur, K. T. Flood, B. N. Ratcliff, Z. C. Huard, Y. I. Skovpen, A. Calcaterra, R. de Sangro, J. Va’vra, M. Röhrken, L. M. Cremaldi, A. Filippi, R. Cowan, R. Sacco, M. Ebert, C. L. Davis, A. Palano, P. Ongmongkolkul, Marco Bomben, G. J. King, N. Tasneem, James R. Wilson, F. Simonetto, S. Banerjee, P. Taras, E. P. Solodov, M. Piccolo, M. Hess, Brian Shuve, R. Calabrese, G. Batignani, F. Anulli, Aidan Randle-Conde, G. Simi, D. G. Hitlin, P. Patteri, P. F. Harrison, V. P. Druzhinin, C. Bozzi, G. Cowan, K. Honscheid, Alessandro Gaz, E. Ben-Haim, J. Oyang, G. Eigen, Alessandro Pilloni, Cheng Chen, R. J. Barlow, J. J. Walsh, S. H. Robertson, M. Posocco, D. R. Peimer, R. Gorodeisky, V. B. Golubev, J. Ocariz, Crisostomo Sciacca, D. Aston, N. Guttman, F. Forti, D. A. Roberts, G. Rizzo, B. Echenard, Douglas Wright, Herbert Koch, M. Rotondo, L. Zani, V. E. Blinov, A. M. Lutz, R. Cheaib, H. A. Neal, G. Casarosa, D. X. Lin, R. Waldi, M. Rama, J. P. Coleman, D. Gamba, M. Bellis, G. De Nardo, X. C. Lou, J. A. McKenna, M. T. Graham, A. Hafner, E. Gabathuler, W. R. Innes, C. Hearty, F. C. Porter, J. M. LoSecco, T. E. Latham, K. Griessinger, G. Marchiori, G. Wormser, M. Carpinelli, C. Voss, B. Dey, J. M. Izen, A. Oyanguren, W. Gradl, E. M. T. Puccio, D. J. Summers, J. P. Lees, G. D. Lafferty, D. W. G. S. Leith, S. Prell, Hamad Ahmed, R. Stroili, R. Faccini, I. Garzia, F. De Mori, J. Cochran, M. Chrzaszcz, F. Ferrarotto, A. J. Lankford, B. Bhuyan, F. Le Diberder, G. Calderini, A. R. Buzykaev, V. Santoro, B. G. Fulsom, R. J. Sobie, V. Poireau, A. Beaulieu, L. Vitale, Denis Bernard, Peter S. Kim, F. Martinez-Vidal, A. J. S. Smith, Y. B. Li, A. Soffer, A. M. Rossi, R. C. Field, L. Lanceri, W. Dunwoodie, S. Luitz, C. P. Jessop, E. Fioravanti, A. Lusiani, Martino Margoni, W. J. Wisniewski, F. Palombo, T. Lueck, E. Luppi, J. Chauveau, Maurizio Biasini, G. Finocchiaro, D. R. Muller, M. K. Sullivan, R. Godang, A. Roodman, Tamara Vazquez Schroeder, C. Cartaro, H. M. Lacker, R. M. Seddon, M. S. Alam, Owen Rosser Long, B. G. Pushpawela, F. Ferroni, So R. Y., A. G. Denig, Tim Adye, R. D. Kass, J. A. Ernst, L. Sun, B. Oberhof, Stephen Robert Wagner, B. T. Meadows, S. Passaggio, K. R. Schubert, S. Martellotti, R. F. Schwitters, R. Kowalewski, G. Raven, M. D. Sokoloff, C. Bünger, I. M. Nugent, K. Y. Todyshev, P. R. Burchat, D. S. Chao, M. Davier, S. J. Sekula, A. Jawahery, E. A. Kozyrev, A. P. Onuchin, G. Cibinetto, C. Hast, D. J. Lange, G. Piredda, W. Panduro Vazquez, A. M. Eisner, T. J. Gershon, M. V. Purohit, G. R. Bonneaud, J. Dorfan, J. Albert, Elisa Manoni, M. Verderi, N. Arnaud, E. Paoloni, I. M. Peruzzi, J. W. Gary, S. I. Serednyakov, F. Bianchi, S. Dittrich, Wu S. L., Y. G. Kolomensky, C. Touramanis, O. Grünberg, J. M. Roney, J. G. Smith, U. Mallik, T. S. Miyashita, N. Neri, S. Bettarini, A. J. Bevan, S. M. Spanier, D. E. Hutchcroft, T. Leddig, F. Di Lodovico, W. S. Lockman, M. R. Convery, D. J. Payne, T. S. Mattison, D. N. Brown, F. F. Wilson, S. Emery, D. Bettoni, Florian Urs Bernlochner, C. Patrignani, and V. Tisserand
Subjects: Physics, 010308 nuclear & particles physics, 0103 physical sciences, Hadron, Mass spectrum, Analytical chemistry, Invariant mass, Center of mass, State (functional analysis), 010306 general physics, 01 natural sciences, Luminosity
Abstract: Author(s): Lees, JP; Poireau, V; Tisserand, V; Grauges, E; Palano, A; Eigen, G; Brown, DN; Kolomensky, YG; Fritsch, M; Koch, H; Schroeder, T; Cheaib, R; Hearty, C; Mattison, TS; McKenna, JA; So, RY; Blinov, VE; Buzykaev, AR; Druzhinin, VP; Golubev, VB; Kozyrev, EA; Kravchenko, EA; Onuchin, AP; Serednyakov, SI; Skovpen, YI; Solodov, EP; Todyshev, KY; Lankford, AJ; Dey, B; Gary, JW; Long, O; Eisner, AM; Lockman, WS; Panduro Vazquez, W; Chao, DS; Cheng, CH; Echenard, B; Flood, KT; Hitlin, DG; Kim, J; Li, Y; Lin, DX; Miyashita, TS; Ongmongkolkul, P; Oyang, J; Porter, FC; Rohrken, 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; Shuve, BJ; Lacker, HM; Bhuyan, B; Mallik, U; Chen, C; Cochran, J; Prell, S; Gritsan, AV; Arnaud, N; Davier, M | Abstract: We study the processes e+e-→2(π+π-)π0π0π0γ and 2(π+π-)π0π0ηγ in which an energetic photon is radiated from the initial state. The data were collected with the BABAR detector at SLAC. About 14 000 and 4700 events, respectively, are selected from a data sample corresponding to an integrated luminosity of 469 fb-1. The invariant mass of the hadronic final state defines the effective e+e- center-of-mass energy. The center-of-mass energies range from threshold to 4.5 GeV. From the mass spectra, the first ever measurements of the e+e-→2(π+π-)π0π0π0 and the e+e-→2(π+π-)π0π0η cross sections are performed. The contributions from ωπ+π-π0π0, η2(π+π-), and other intermediate states are presented. We observe the J/ψ and ψ(2S) in most of these final states and measure the corresponding branching fractions, many of them for the first time.
Published: 2021

5. Light meson spectroscopy from Dalitz plot analyses ηc decays to η0K + K − , η0π + π − , and ηπ + π − produced in two-photon interactions

Author: J. ???P. Lees, V. Poireau, V. Tisserand, E. Grauges, A. Palano, G. Eigen, D. ???N. Brown, Yu. ???G. Kolomensky, M. Fritsch, H. Koch, T. Schroeder, R. Cheaib, C. Hearty, T. ???S. Mattison, J. ???A. McKenna, R. ???Y. So, V. ???E. Blinov, A. ???R. Buzykaev, V. ???P. Druzhinin, V. ???B. Golubev, E. ???A. Kozyrev, E. ???A. Kravchenko, A. ???P. Onuchin, S. ???I. Serednyakov, Yu. ???I. Skovpen, E. ???P. Solodov, K. ???Yu. Todyshev, A. ???J. Lankford, B. Dey, J. ???W. Gary, O. Long, A. ???M. Eisner, W. ???S. Lockman, W. Panduro Vazquez, D. ???S. Chao, C. ???H. Cheng, B. Echenard, K. ???T. Flood, D. ???G. Hitlin, J. Kim, Y. Li, D. ???X. Lin, T. ???S. Miyashita, P. Ongmongkolkul, J. Oyang, F. ???C. Porter, M. R??hrken, Z. Huard, B. ???T. Meadows, B. ???G. Pushpawela, M. ???D. Sokoloff, L. Sun, J. ???G. Smith, S. ???R. Wagner, D. Bernard, M. Verderi, D. Bettoni, C. Bozzi, R. Calabrese, G. Cibinetto, E. Fioravanti, I. Garzia, E. Luppi, V. Santoro, A. Calcaterra, R. de Sangro, G. Finocchiaro, S. Martellotti, P. Patteri, I. ???M. Peruzzi, M. Piccolo, M. Rotondo, A. Zallo, S. Passaggio, C. Patrignani, B. ???J. Shuve, H. ???M. Lacker, B. Bhuyan, U. Mallik, C. Chen, J. Cochran, S. Prell, A. ???V. Gritsan, N. Arnaud, M. Davier, F. Le Diberder, A. ???M. Lutz, G. Wormser, D. ???J. Lange, D. ???M. Wright, J. ???P. Coleman, E. Gabathuler, D. ???E. Hutchcroft, D. ???J. Payne, C. Touramanis, A. ???J. Bevan, F. Di Lodovico, R. Sacco, G. Cowan, Sw. Banerjee, C. ???L. Davis, A. ???G. Denig, W. Gradl, K. Griessinger, A. Hafner, K. ???R. Schubert, R. ???J. Barlow, G. ???D. Lafferty, R. Cenci, A. Jawahery, D. ???A. Roberts, R. Cowan, S. ???H. Robertson, R. ???M. Seddon, N. Neri, F. Palombo, L. Cremaldi, R. Godang, D. ???J. Summers, P. Taras, G. De Nardo, C. Sciacca, G. Raven, C. ???P. Jessop, J. ???M. LoSecco, K. Honscheid, R. Kass, A. Gaz, M. Margoni, M. Posocco, G. Simi, F. Simonetto, R. Stroili, S. Akar, E. Ben-Haim, M. Bomben, G. ???R. Bonneaud, G. Calderini, J. Chauveau, G. Marchiori, J. Ocariz, M. Biasini, E. Manoni, A. Rossi, G. Batignani, S. Bettarini, M. Carpinelli, G. Casarosa, M. Chrzaszcz, F. Forti, M. ???A. Giorgi, A. Lusiani, B. Oberhof, E. Paoloni, M. Rama, G. Rizzo, J. ???J. Walsh, L. Zani, A. ???J. ???S. Smith, F. Anulli, R. Faccini, F. Ferrarotto, F. Ferroni, A. Pilloni, G. Piredda, C. B??nger, S. Dittrich, O. Gr??nberg, M. He??, T. Leddig, C. Vo??, R. Waldi, T. Adye, F. ???F. Wilson, S. Emery, G. Vasseur, D. Aston, C. Cartaro, M. ???R. Convery, J. Dorfan, W. Dunwoodie, M. Ebert, R. ???C. Field, B. ???G. Fulsom, M. ???T. Graham, C. Hast, W. ???R. Innes, P. Kim, D. ???W. ???G. ???S. Leith, S. Luitz, D. ???B. MacFarlane, D. ???R. Muller, H. Neal, B. ???N. Ratcliff, A. Roodman, M. ???K. Sullivan, J. Va???vra, W. ???J. Wisniewski, M. ???V. Purohit, J. ???R. Wilson, A. Randle-Conde, S. ???J. Sekula, H. Ahmed, M. Bellis, P. ???R. Burchat, E. ???M. ???T. Puccio, M. ???S. Alam, J. ???A. Ernst, R. Gorodeisky, N. Guttman, D. ???R. Peimer, A. Soffer, S. ???M. Spanier, J. ???L. Ritchie, R. ???F. Schwitters, J. ???M. Izen, X. ???C. Lou, F. Bianchi, F. De Mori, A. Filippi, D. Gamba, L. Lanceri, L. Vitale, F. Martinez-Vidal, A. Oyanguren, J. Albert, A. Beaulieu, F. ???U. Bernlochner, G. ???J. King, R. Kowalewski, T. Lueck, I. ???M. Nugent, J. ???M. Roney, R. ???J. Sobie, N. Tasneem, T. ???J. Gershon, P. ???F. Harrison, T. ???E. Latham, R. Prepost, S. ???L. Wu, Lees, J. ???P., Poireau, V., Tisserand, V., Grauges, E., Palano, A., Eigen, G., Brown, D. ???N., Kolomensky, Yu. ???G., Fritsch, M., Koch, H., Schroeder, T., Cheaib, R., Hearty, C., Mattison, T. ???S., Mckenna, J. ???A., So, R. ???Y., Blinov, V. ???E., Buzykaev, A. ???R., Druzhinin, V. ???P., Golubev, V. ???B., Kozyrev, E. ???A., Kravchenko, E. ???A., Onuchin, A. ???P., Serednyakov, S. ???I., Skovpen, Yu. ???I., Solodov, E. ???P., Todyshev, K. ???Yu., Lankford, A. ???J., Dey, B., Gary, J. ???W., Long, O., Eisner, A. ???M., Lockman, W. ???S., Panduro Vazquez, W., Chao, D. ???S., Cheng, C. ???H., Echenard, B., Flood, K. ???T., Hitlin, D. ???G., Kim, J., Li, Y., Lin, D. ???X., Miyashita, T. ???S., Ongmongkolkul, P., Oyang, J., Porter, F. ???C., R??hrken, M., Huard, Z., Meadows, B. ???T., Pushpawela, B. ???G., Sokoloff, M. ???D., Sun, L., Smith, J. ???G., Wagner, S. ???R., 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. ???M., Piccolo, M., Rotondo, M., Zallo, A., Passaggio, S., Patrignani, C., Shuve, B. ???J., Lacker, H. ???M., Bhuyan, B., Mallik, U., Chen, C., Cochran, J., Prell, S., Gritsan, A. ???V., Arnaud, N., Davier, M., Le Diberder, F., Lutz, A. ???M., Wormser, G., Lange, D. ???J., Wright, D. ???M., Coleman, J. ???P., Gabathuler, E., Hutchcroft, D. ???E., Payne, D. ???J., Touramanis, C., Bevan, A. ???J., Di Lodovico, F., Sacco, R., Cowan, G., Banerjee, Sw., Davis, C. ???L., Denig, A. ???G., Gradl, W., Griessinger, K., Hafner, A., Schubert, K. ???R., Barlow, R. ???J., Lafferty, G. ???D., Cenci, R., Jawahery, A., Roberts, D. ???A., Cowan, R., Robertson, S. ???H., Seddon, R. ???M., Neri, N., Palombo, F., Cremaldi, L., Godang, R., Summers, D. ???J., Taras, P., De Nardo, G., Sciacca, C., Raven, G., Jessop, C. ???P., Losecco, J. ???M., 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. ???R., 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. ???A., Lusiani, A., Oberhof, B., Paoloni, E., Rama, M., Rizzo, G., Walsh, J. ???J., Zani, L., Smith, A. ???J. ???S., Anulli, F., Faccini, R., Ferrarotto, F., Ferroni, F., Pilloni, A., Piredda, G., B??nger, C., Dittrich, S., Gr??nberg, O., He??, M., Leddig, T., Vo??, C., Waldi, R., Adye, T., Wilson, F. ???F., Emery, S., Vasseur, G., Aston, D., Cartaro, C., Convery, M. ???R., Dorfan, J., Dunwoodie, W., Ebert, M., Field, R. ???C., Fulsom, B. ???G., Graham, M. ???T., Hast, C., Innes, W. ???R., Kim, P., Leith, D. ???W. ???G. ???S., Luitz, S., Macfarlane, D. ???B., Muller, D. ???R., Neal, H., Ratcliff, B. ???N., Roodman, A., Sullivan, M. ???K., Va???vra, J., Wisniewski, W. ???J., Purohit, M. ???V., Wilson, J. ???R., Randle-Conde, A., Sekula, S. ???J., Ahmed, H., Bellis, M., Burchat, P. ???R., Puccio, E. ???M. ???T., Alam, M. ???S., Ernst, J. ???A., Gorodeisky, R., Guttman, N., Peimer, D. ???R., Soffer, A., Spanier, S. ???M., Ritchie, J. ???L., Schwitters, R. ???F., Izen, J. ???M., Lou, X. ???C., Bianchi, F., De Mori, F., Filippi, A., Gamba, D., Lanceri, L., Vitale, L., Martinez-Vidal, F., Oyanguren, A., Albert, J., Beaulieu, A., Bernlochner, F. ???U., King, G. ???J., Kowalewski, R., Lueck, T., Nugent, I. ???M., Roney, J. ???M., Sobie, R. ???J., Tasneem, N., Gershon, T. ???J., Harrison, P. ???F., Latham, T. ???E., Prepost, R., and Wu, S. ???L.
Subjects: Belle II, SuperKEKB, Dalitz, Dalitz plot analyses, light meson, Light meson spectroscopy, Dalitz plot analyse
Abstract: We study the processes γγ → ηc → η0KþK−, η0πþπ−, and ηπþπ− using a data sample of 519 fb−1 recorded with the BABAR detector operating at the SLAC PEP-II asymmetric-energy e+e− collider at center-of-mass energies at and near the Υ(nS) (n = 2, 3, 4) resonances. This is the first observation of the decay ηc → η0KþK− and we measure the branching fraction Γðηc → η0KþK−Þ=ðΓðηc → η0πþπ−Þ 1⁄4 0.644 0.039stat 0.032sys. Significant interference is observed between γγ → ηc → ηπþπ− and the nonresonant two-photon process γγ → ηπþπ−. A Dalitz plot analysis is performed of ηc decays to η0KþK−, η0πþπ−, and ηπþπ−. Combined with our previous analysis of ηc → KK ̄ π, we measure the K 0ð1430Þ parameters and the ratio between its η0K and πK couplings. The decay ηc → η0πþπ− is dominated by the f0ð2100Þ resonance, also observed in J=ψ radiative decays. A new a0(1700)→ ηπ resonance is observed in the ηc → ηπþπ− channel. We also compare ηc decays to η and η0 final states in association with scalar mesons as they relate to the identification of the scalar glueball.
Published: 2021

6. Precision Measurement of the Ratio B(ϒ(3S)→τ+τ−)/B(ϒ(3S)→μ+μ−)

Author: J. Dorfan, N. Tasneem, B. N. Ratcliff, Aidan Randle-Conde, Biplab Dey, M. Hess, Z. C. Huard, W. Panduro Vazquez, C. H. Cheng, F. Simonetto, R. de Sangro, A. Filippi, S. Bettarini, Roberto Calabrese, C. H. Chen, L. M. Cremaldi, R. Cowan, J. Ocariz, S. M. Spanier, Y. Li, A. Roodman, R. M. Seddon, I. M. Peruzzi, E. Fioravanti, Vladimir Blinov, F. Bianchi, S. Dittrich, S. Akar, W. S. Lockman, E. Ben-Haim, A. G. Denig, D. G. Hitlin, J. W. Gary, J. L. Ritchie, S. I. Serednyakov, Roland Waldi, F. Ferroni, So R. Y., M. Verderi, X. C. Lou, F. De Mori, F. Anulli, R. C. Field, R. Godang, U. Mallik, Heiko Lacker, E. Gabathuler, F. C. Porter, R. Gorodeisky, D. W. G. S. Leith, Paul Fraser Harrison, D. A. Roberts, Ju-Young Kim, N. Neri, N. Arnaud, J. M. LoSecco, G. Calderini, Stephen Robert Wagner, K. R. Schubert, M. K. Sullivan, D. Gamba, F. Forti, Alessandro Gaz, A. Hafner, E. M. T. Puccio, N. Guttman, W. Dunwoodie, A. Calcaterra, B. G. Pushpawela, C. Cartaro, G. Marchiori, Maurizio Biasini, C. Hearty, M. Chrzaszcz, A. Sibidanov, D. J. Summers, J. M. Roney, J. G. Smith, G. Wormser, Marco Bomben, S. H. Robertson, M. Fritsch, Douglas Wright, L. Zani, W. R. Innes, R. J. Sobie, M. V. Purohit, J. Albert, L. Vitale, R. Cheaib, D. Bettoni, Andrei Gritsan, James R. Wilson, S. Emery, Brian Shuve, F. Martinez-Vidal, Dominik Müller, T. Schroeder, J. J. Walsh, R. Cenci, A. Zallo, A. M. Rossi, F. Di Lodovico, D. J. Payne, V. Poireau, Owen Rosser Long, M. Piccolo, Joseph Izen, B. Echenard, D. Bernard, Florian Urs Bernlochner, D. N. Brown, Hamad Ahmed, F. Palombo, T. Lueck, D. E. Hutchcroft, J. A. Ernst, W. Gradl, Abner Soffer, Herbert Koch, M. T. Graham, T. Leddig, P. Ongmongkolkul, L. Lanceri, G. D. Lafferty, A. P. Onuchin, L. Sun, Eleonora Luppi, I. Garzia, K. Y. Todyshev, G. Batignani, J. Oyang, C. Patrignani, G. Rizzo, V. Tisserand, Colin Jessop, G. Eigen, G. Finocchiaro, D. X. Lin, D. B. MacFarlane, M. Rama, Adrian John Bevan, W. J. Wisniewski, R. Prepost, J. Chauveau, G. J. King, J. A. McKenna, S. Prell, T. E. Latham, K. Griessinger, E. Paoloni, Yuri Skovpen, F. F. Wilson, James H Cochran, J. P. Lees, S. Martellotti, M. Carpinelli, B. Oberhof, M. Rotondo, T. S. Mattison, B. T. Meadows, V. Santoro, A. Lusiani, G. De Nardo, G. Vasseur, K. T. Flood, M. Röhrken, G. Raven, M. D. Sokoloff, V. P. Druzhinin, Alessandro Pilloni, D. R. Peimer, A. M. Eisner, I. M. Nugent, R. Stroili, P. R. Burchat, C. Hast, D. J. Lange, G. Piredda, Sw. Banerjee, D. S. Chao, G. R. Bonneaud, E. Grauges, Mario Giorgi, M. Davier, R. Sacco, T. J. Gershon, P. Taras, Gabriele Simi, C. L. Davis, A. J.S. Smith, R. Kowalewski, J. P. Coleman, E. P. Solodov, T. S. Miyashita, R. F. Schwitters, Elisa Manoni, D. Aston, C. Bünger, E. A. Kravchenko, A. Oyanguren, Crisostomo Sciacca, M. Bellis, C. Touramanis, O. Grünberg, A. Jawahery, Martino Margoni, G. Cibinetto, E. A. Kozyrev, C. Voss, P. C. Kim, Tim Adye, R. D. Kass, B. Bhuyan, B. G. Fulsom, V. B. Golubev, A. Palano, S. Luitz, P. Patteri, J. Va’vra, A. M. Lutz, S. Passaggio, R. Faccini, F. Ferrarotto, A. J. Lankford, F. Le Diberder, G. A. Cowan, M. Ebert, Stephen Sekula, C. Bozzi, K. Honscheid, R. J. Barlow, M. Posocco, H. A. Neal, G. Casarosa, A. R. Buzykaev, M. S. Alam, A. Beaulieu, Wu S. L., M. R. Convery, and Y. G. Kolomensky
Subjects: Physics, Particle physics, Meson, 0103 physical sciences, General Physics and Astronomy, High Energy Physics::Experiment, 010306 general physics, 01 natural sciences, Energy (signal processing), Standard Model
Abstract: We report on a precision measurement of the ratio ${\cal R}_{\tau\mu}^{\Upsilon(3S)} = {\cal B}(\Upsilon(3S)\to\tau^+\tau^-)/{\cal B}(\Upsilon(3S)\to\mu^+\mu^-)$ using data collected with the BaBar detector at the SLAC PEP-II $e^+e^-$ collider. The measurement is based on a 28 fb$^{-1}$ data sample collected at a center-of-mass energy of 10.355 GeV corresponding to a sample of 122 million $\Upsilon(3S)$ mesons. The ratio is measured to be ${\cal R}_{\tau\mu}^{\Upsilon(3S)} = 0.966 \pm 0.008_\mathrm{stat} \pm 0.014_\mathrm{syst}$ and is in agreement with the Standard Model prediction of 0.9948 within 2 standard deviations. The uncertainty in ${\cal R}_{\tau\mu}^{\Upsilon(3S)}$ is almost an order of magnitude smaller than the only previous measurement.
Published: 2020

7. Measurement of the Mass of the τ Lepton

Author: T. H. Burnett, S. T. Xue, F. Li, H. L. Ni, W. G. Li, Jun-Bing Ma, H. S. Zhou, G. Y. Hu, Q. Liu, Z. D. Cheng, G. P. Zhou, O. Bardon, E. Soderstrom, Wei Li, Y. H. Zhou, Michael J. Fero, Z. J. Jiang, J. S. Whitaker, Chunmei Zhang, L. P. Zhou, Z. P. Mao, Robert Wilson, S. D. Gu, D. H. Ma, W. G. Yan, Q. P. Jia, L. J. Pan, T. Hu, H. Marsiske, D. L. Shen, M. L. Gao, Y. S. Li, C. M. Yang, R. Cowan, W. X. Gao, M. Mandelkern, Ming-Han Ye, Q. M. Zhu, W. D. Li, Yuanyuan Wang, J. W. Zhang, J. A. Coller, S. Z. Lin, D. G. Hitlin, W. R. Zhao, E. Torrence, H. M. Liu, Lei Zhang, Q. M. Li, Z. P. Zheng, Y. F. Lai, Y. B. Liu, D. M. Xi, Y. N. Gao, Joseph Izen, G. Rong, L. S. Zheng, Y. Zhang, X. M. Xia, J. Yan, Pihong Zhao, H. Y. Zhang, J. Panetta, J. S. Campbell, A. S. Johnson, S. M. Chen, D. X. Zhao, B. Y. Zhang, W. X. Gu, Y. C. Zhu, P. Wang, G. L. Tong, M. Z. Wang, X. C. Meng, Z. Q. Xu, W. H. Toki, P. L. Wang, X. F. Zhou, Junguang Lu, P. F. Lang, Xingzhu Cui, H. C. Cui, H. Z. Shi, H. S. Sun, S. Q. Zhang, D. Q. Huang, T. J. Wang, A. J. S. Smith, J. Synodinos, R. Becker-Szendy, J. Z. Bai, Ya-Nan Guo, C. Y. Yang, S. Q. Gao, X. F. Song, Y. Q. Chen, H. L. Ding, Xin Wu, D. P. Stoker, C. Fang, L. Z. Wang, X. X. Xie, R. K. Yamamoto, M. H. Kelsey, R. S. Xu, J. C. Li, Y. K. Que, H. S. Mao, Y. S. Zhu, S. Z. Ye, M. Hatanaka, W. Dunwoodie, M. G. Zhao, Z. Q. Yu, W. J. Wisniewski, G. Zioulas, J. H. Gu, J. Schultz, J. Quigley, S. J. Chen, L. Jones, B. Lowery, Chun-Hua Jiang, J. J. He, P. P. Xie, P. Q. Li, Y. Y. Shao, Jinxing Zheng, E. C. Ma, H. L. Zhang, E. Prabhakar, A. J. Lankford, H. B. Yao, J. T. Shank, D. H. Zhang, H. Y. Sheng, N. D. Qi, Z. Z. Du, R. G. Liu, B. Schmid, Y. L. Han, R. B. Li, Y. Z. Huang, F. C. Porter, and Y. N. Guo
Subjects: Physics, Particle physics, Lepton
Published: 2020

8. Direct Measurement of the Pseudoscalar Decay Constant, fDs

Author: Z. P. Zheng, Y. Jin, J. C. Li, C. C. Zhang, D. Paluselli, G. P. Zhou, J. G. Lu, G. Zioulas, S. Z. Lin, W. R. Zhao, Z. A. Liu, L. S. Wang, M. H. Ye, R. B. Li, I. Blum, Z. Q. Xu, Y. H. Zhou, K. R. He, R. J. Wilson, Chun-Hua Jiang, D. P. Stoker, J. H. Liu, T. J. Wang, S. Whittaker, R. Malchow, G. L. Tong, T. Hu, Michael Schernau, W. Yang, B. A. Zhuang, P. Gratton, Q. P. Jia, J. Panetta, S. M. Chen, X. M. Xia, H. B. Lan, W. X. Zhao, S. Q. Gao, J. Nie, J. Fang, L. S. Zheng, X. R. Shi, Y. Z. Huang, G. P. Chen, Y. B. Liu, Y. Zhang, Y. C. Zhu, O. Bardon, P. L. Wang, E. Soderstrom, H. Shen, Wei Li, D. X. Zhao, B. Y. Zhang, F. C. Porter, F. Sun, X. Q. Hu, W. D. Li, Y. F. Gu, S. H. Kang, D. Z. Xu, J. M. lzen, X. F. Zhou, D. Q. Huang, R. S. Xu, Y. Y. Wang, Y. Y. Shao, C. S. Gao, D. G. Hitlin, M. He, D. L. Shen, J. Quigley, S. Z. Ye, M. Hatanaka, M. Mandelkern, C. Z. Yuan, H. B. Hu, R. G. Liu, Jinxing Zheng, S. J. Chen, H. S. Mao, B. K. Kim, Y. Q. Chen, S. T. Xue, J. W. Zhang, B. Schmid, B. S. Cheng, J. Z. Bai, A. Breakstone, Q. Liu, Xingzhu Cui, M. G. Zhao, G. Y. Hu, F. A. Harris, L. Jones, J. H. Gu, J. Schultz, X. L. Fan, F. Li, H. L. Ni, H. C. Cui, Y. K. Que, J. Chen, Li Zhou, H. B. Yao, Q. M. Zhu, H. Z. Shi, P. Wang, Jun-Bing Ma, Y. P. Tan, S. M. Wang, D. M. Xi, J. Yan, S. W. Han, J. Synodinos, X. F. Song, P. P. Xie, X. Y. Shen, P. F. Lang, J. W. Zhao, S. D. Gu, S. Q. Zhang, L. Z. Wang, A. M. Ma, H. S. Zhou, J. J. He, M. Z. Wang, H. L. Ding, M. H. Kelsey, Y. N. Guo, E. Torrence, H. S. Sun, X. C. Lou, J. Oyang, H. Y. Sheng, W. Dunwoodie, R. K. Yamamoto, Y. L. Han, P. Q. Li, M. L. Gao, W. G. Li, Xinglong Li, D. H. Zhang, J. Y. Zhang, X. Q. Li, S. Q. Tang, Pihong Zhao, W. J. Wisniewski, C. S. Yu, C. X. Yu, B. Lowery, W. X. Gu, R. Cowan, E. Prabhakar, Y. B. Chen, W. H. Toki, C. Y. Yang, N. D. Qi, H. M. Liu, A. J. Lankford, Y. F. Lai, H. F. Chen, X. C. Meng, W. F. Wang, J. Standifird, L. J. Pan, Michael J. Fero, Y. Y. Zhang, A. J. S. Smith, Y. S. Zhu, C. M. Yang, W. X. Gao, Z. Z. Du, W. G. Yan, S. J. Sun, E. C. Ma, Lei Zhang, H. L. Zhang, G. Rong, Z. Q. Yu, S.L. Olsen, T. H. Burnett, F. Wang, Z. P. Mao, and Q. Y. Li
Subjects: Physics, Pseudoscalar, Particle physics, Exponential decay
Published: 2020

9. ψ(2S) Hadronic Decays to Vector-Tensor Final States

Author: Dehong Zhang, W. G. Yan, I. Blum, F. Sun, A. J. Lankford, Qiyang Zhang, H. Z. Shi, Y. H. Yu, Chun-Hua Jiang, Q. M. Zhu, J. Z. Bai, X. F. Song, Lei Zhang, Joseph Izen, G. Rong, Y. Z. Huang, P. Wang, L. Z. Wang, W. G. Li, J. Panetta, Y. C. Zhu, Kai Yi, M. Z. Wang, L. P. Zhou, F. C. Porter, Z. G. Zhao, M. H. Kelsey, D. M. Xi, J. G. Lu, J. Yan, Jiming Yang, F. Wang, C. H. Luo, P. L. Wang, Z. Z. Du, H. S. Sun, L. J. Pan, Z. P. Mao, Meng Wang, Y. X. Ye, H. M. Liu, S. T. Xue, S. M. Wang, X. N. Li, X. C. Lou, H. Shen, P. Gratton, J. H. Liu, Q. H. Hu, J. Y. Zhang, T. Hu, F. Lu, Y. H. Xie, Y. G. Xie, Y. K. Que, J. Chen, G. Y. Hu, X. M. Xia, H. M. Hu, Michael Schernau, T. J. Wang, H. L. Ding, Z. W. Chai, W. Yang, J. Nie, J. G. Bian, D. H. Zhang, C. S. Yu, F. A. Harris, H. Y. Sheng, Z. Q. Yu, Y. Y. Zhang, C. Z. Yuan, X. Q. Hu, E. C. Ma, H. L. Zhang, Y. Y. Shao, S. D. Gu, S.L. Olsen, Cunfeng Wei, H. B. Li, C. S. Gao, D. G. Hitlin, J. W. Zhang, J. P. Liu, H. S. Mao, G. P. Chen, W. D. Li, S. Feng, Y. F. Gu, C. X. Yu, Shun-Qi Zhang, M. He, D. L. Shen, N. D. Qi, Y. B. Chen, X. C. Meng, W. J. Xiong, P. F. Lang, Jinxing Zheng, J. D. Huang, J. F. Qiu, Y. Jin, R. B. Li, J. Standifird, C. D. Qian, C. C. Zhang, M. G. Zhao, L. Y. Dong, G. P. Zhou, D. Kong, Cheng-Kui Li, W. X. Gu, Y. N. Guo, B. S. Cheng, W. H. Toki, Y. L. Han, W. R. Zhao, B. W. Shen, L. C. Lu, G. F. Xu, B. Lowery, D. Paluselli, J. He, S. Q. Gao, Z. J. Ke, W. Dunwoodie, X. R. Qi, J. L. Zhang, Y. Zhang, J. C. Li, P. P. Xie, J. C. Chen, R. Malchow, D. Li, C. M. Yang, J. W. Zhao, Y. Yuan, Y. S. Zhu, J. H. Gu, L. S. Zheng, P. Q. Li, X. Y. Shen, Z. P. Zheng, J. Oyang, X. Y. Zhang, R. G. Liu, L. S. Wang, M. H. Ye, G. L. Tong, B. A. Zhuang, M. L. Gao, S. Q. Tang, Wei Li, L. Y. Ding, Y. H. Qu, B. K. Kim, Y. F. Lai, H. F. Chen, S. W. Han, A. M. Ma, H. S. Zhou, H. W. Zhao, C. Y. Yang, Jun-Bing Ma, Xingzhu Cui, Z. T. Yu, D. X. Zhao, B. Y. Zhang, Y. Y. Wang, S. W. Ye, M. Weaver, J. L. Hu, Y. G. Wu, J. J. He, Y. Q. Chen, X. H. Li, J. Y. Lu, C. C. Xu, Y. B. Liu, and Xuan Yang
Subjects: Physics, Particle physics, Hadron, Tensor
Published: 2020

10. Search for Rare or Forbidden Decays of the D0 Meson

Author: T. E. Latham, M. Carpinelli, J. Ocariz, J. W. Gary, V. B. Golubev, Alessandro Pilloni, E. Grauges, Mario Giorgi, Elisa Manoni, N. Tasneem, Yu G. Kolomensky, D. Aston, James R. Wilson, Brian Shuve, R. Calabrese, D. R. Peimer, A. Calcaterra, J. M. Roney, C. Cartaro, Aidan Randle-Conde, J. G. Smith, S. Bettarini, J. L. Ritchie, J. M. LoSecco, Marco Bomben, C. H. Chen, S. M. Spanier, D. Bettoni, Colin Jessop, R. Prepost, D. B. MacFarlane, M. Rama, A. M. Rossi, Joseph Izen, Z. C. Huard, W. Panduro Vazquez, C. Voss, L. M. Cremaldi, J. A. McKenna, H. A. Neal, G. Casarosa, W. R. Innes, W. S. Lockman, A. G. Denig, A. Oyanguren, F. Di Lodovico, D. J. Payne, E. A. Kravchenko, M. Verderi, S. Martellotti, C. Hearty, F. Anulli, B. T. Meadows, G. Raven, V. Poireau, Alessandro Gaz, M. Piccolo, D. J. Summers, M. D. Sokoloff, P. R. Burchat, Abner Soffer, G. Eigen, M. Fritsch, P. C. Kim, Crisostomo Sciacca, G. Rizzo, J. J. Walsh, W. J. Wisniewski, G. Vasseur, K. T. Flood, R. Kowalewski, W. Dunwoodie, U. Mallik, S. H. Robertson, S. Emery, G. Batignani, G. J. King, A. R. Buzykaev, M. S. Alam, D. G. Hitlin, E. A. Kozyrev, R. Cenci, C. Touramanis, E. Fioravanti, A. Zallo, Florian Urs Bernlochner, F. Palombo, T. Lueck, I. M. Nugent, B. G. Pushpawela, N. Neri, R. J. Sobie, L. Vitale, R. Sacco, Herbert Koch, D. S. Chao, A. Beaulieu, D. N. Brown, Douglas Wright, L. Zani, F. Martinez-Vidal, Dominik Müller, M. T. Graham, O. Grünberg, K. Griessinger, M. V. Purohit, J. P. Lees, J. Albert, R. C. Field, M. Davier, A. Roodman, R. M. Seddon, E. Paoloni, T. S. Miyashita, G. D. Lafferty, C. Patrignani, A. J.S. Smith, M. Ebert, E. Luppi, D. E. Hutchcroft, Stephen Sekula, R. Gorodeisky, D. A. Roberts, Roland Waldi, F. Ferroni, T. S. Mattison, T. Leddig, So R. Y., F. De Mori, C. L. Davis, P. Ongmongkolkul, R. Godang, F. Forti, C. Hast, D. J. Lange, G. Piredda, Paul Fraser Harrison, J. Dorfan, Heiko Lacker, A. Hafner, E. M. T. Puccio, B. Bhuyan, Ju-Young Kim, Maurizio Biasini, V. Tisserand, G. R. Bonneaud, M. Rotondo, R. Cheaib, Stephen Robert Wagner, B. G. Fulsom, Tim Adye, T. J. Gershon, K. R. Schubert, V. P. Druzhinin, C. Bozzi, K. Honscheid, M. K. Sullivan, V. E. Blinov, G. De Nardo, V. Santoro, R. D. Kass, Owen Rosser Long, Yu I. Skovpen, F. Simonetto, J. A. Ernst, W. Gradl, L. Lanceri, R. J. Barlow, B. Echenard, M. Röhrken, C. H. Cheng, M. Posocco, R. Faccini, F. Ferrarotto, A. J. Lankford, E. Gabathuler, F. C. Porter, D. Bernard, G. Wormser, L. Sun, G. Finocchiaro, J. Chauveau, T. Schroeder, E. Ben-Haim, R. de Sangro, Adrian John Bevan, M. Hess, F. Le Diberder, D. W. G. S. Leith, X. C. Lou, G. A. Cowan, G. Calderini, D. Gamba, M. Bellis, F. F. Wilson, Martino Margoni, M. Chrzaszcz, A. Filippi, B. Oberhof, A. M. Eisner, Y. Li, R. Cowan, Sw. Banerjee, S. Akar, G. Simi, S. Prell, I. Garzia, N. Guttman, James H Cochran, G. Marchiori, K. Yu Todyshev, R. Stroili, A. Lusiani, P. Taras, E. P. Solodov, J. P. Coleman, R. F. Schwitters, Hamad Ahmed, Andrei Gritsan, A. M. Lutz, S. Passaggio, C. Bünger, A. Jawahery, A. P. Onuchin, G. Cibinetto, A. Palano, S. Luitz, P. Patteri, J. Va’vra, Wu S. L., M. R. Convery, B. N. Ratcliff, Biplab Dey, I. M. Peruzzi, S. I. Serednyakov, F. Bianchi, S. Dittrich, and N. Arnaud
Subjects: Physics, Particle physics, Muon, Annihilation, Meson, Electron–positron annihilation, 0103 physical sciences, General Physics and Astronomy, Electron, 010306 general physics, 01 natural sciences
Abstract: We present a search for nine lepton-number-violating and three lepton-flavor-violating neutral charm decays of the type D^{0}→h^{'-}h^{-}l^{'+}l^{+} and D^{0}→h^{'-}h^{+}l^{'±}l^{∓}, where h and h^{'} represent a K or π meson and l and l^{'} an electron or muon. The analysis is based on 468 fb^{-1} of e^{+}e^{-} annihilation data collected at or close to the ϒ(4S) resonance with the BABAR detector at the SLAC National Accelerator Laboratory. No significant signal is observed for any of the twelve modes, and we establish 90% confidence level upper limits on the branching fractions in the range (1.0-30.6)×10^{-7}. The limits are between 1 and 3 orders of magnitude more stringent than previous measurements.
Published: 2020

11. Measurements of the Absolute Branching Fractions of B± →k±Xc c

Author: A. J. Edwards, F. Simonetto, W. F. Mader, R. H. Schindler, Fry, Shanhui Fan, I Eschrich, W. Menges, M Bruinsma, K. Suzuki, T Schalk, R. Kroeger, J. M. Bauer, D. Boutigny, H. Nicholson, A Petzold, Marcello Rotondo, AT Watson, Martino Margoni, H. U. Flaecher, L. M. Cremaldi, M. Verderi, A Pompili, T. Hadig, U. Mallik, S. K. Swain, KS Chaisanguanthum, Muller, J. F. Strube, Roberto Calabrese, AN Yushkov, E. Gabathuler, Jordan Nash, O. Hamon, R. R. Kofler, M. Krishnamurthy, C. M. Cormack, AE Blinov, WH Toki, R Schwierz, Heiko Lacker, M Battaglia, D. G. Hitlin, S. Ye, M Andreotti, T. C. Petersen, Corrado Angelini, W. Gradl, Stephen Sekula, G Mancinelli, F. C. Porter, R. Ter-Antonyan, R. C. Field, D. E. Wagoner, W. O. Ruddick, Gabriele Simi, A. Buzzo, A. K. Mohapatra, D. J. Payne, J Kadyk, L Piemontese, F. Bucci, P. Wang, ML Vetere, G Lynch, D. Côté, L. Gioi, TW Beck, P. S. Jackson, R. Godang, D. Piccolo, Tisserand, G. Therin, J Marks, W. Bhimji, Gill, Q Zeng, S. Rodier, Nicola Neri, F. Lodovico, O. L. Buchmueller, D. Su, Nicolo De Groot, Wp Vazquez, B. Cheng, Chunhui Chen, K. R. Schubert, C. L. Davis, R. Gamet, H. L. Lynch, A. Gaidot, G. P. Gopal, B. Viaud, Maurizio Pierini, M. P. Kelly, M Saleem, D. J. Bard, A. Calcaterra, J. Ocariz, R Nogowski, M. Piccolo, M. T. Allen, S. Saremi, M Mandelkern, A. W. Weidemann, Matteo Rama, D. M. Strom, Mauro Morandin, G Brandenburg, S. Playfer, C. Bozzi, M. Haire, J. C. Williams, Halyo, K. Honscheid, C. A. Chavez, C. L. Edgar, J Zhang, LT Kerth, D. Dong, DC Williams, JE Sundermann, SE Morgan, J. M. Roney, JS Minamora, Luca Lista, S. J. Gowdy, K. A. George, J. G. Smith, M. B. Nikolich, D Kirkby, C. Cartaro, A. Oyanguren, G. Batignani, R. Sacco, C. Roat, M. Benayoun, Fabio Cossutti, M. A. Mazzoni, G. Wormser, RJ Wilson, H. L. Snoek, S Curry, J. W. Gary, K. Goetzen, B. Franek, P Bloom, R. Frey, H. J. Bulten, CJ Flacco, A. M. Eisner, D. W. G. S. Leith, Nicolas Berger, D. A. Hopkins, S. M. Spanier, Vladimir Blinov, G Vasileiadis, B Lewandowski, J Kroseberg, C. Gatto, A Santroni, S Tosi, C. K. Lae, D. B. MacFarlane, R. J. Barlow, G. Rizzo, E. P. Solodov, D Altenburg, W. N. Cottingham, N. Chevalier, M. Posocco, Marco Bomben, R. Barate, D. Bernard, JD Richman, C Thiebaux, J.J. Reidy, R. Bula, T. Cuhadar-Donszelmann, T. Schroeder, Johnson, G. Schott, M. H. Kelsey, T. Abe, J. Stelzer, C. Touramanis, J. P. Burke, E. Torrence, Giuseppe Della Ricca, Sw. Banerjee, M Pappagallo, Abner Soffer, C. Hearty, R. Claus, S. Prell, Matteo Negrini, Thomas Allmendinger, C. Dallapiccola, J. J. Hollar, Y. P. Lau, D. Fortin, J. A. McKenna, Kyung-Soo Yi, G. Calderini, Douglas Wright, P Lund, James H Cochran, R. Cenci, T. Glanzman, R. L. Flack, HP Paar, J. L. Ritchie, EA Eckhart, S. Bettarini, A. J.S. Smith, Philippe Grenier, M Macri, J. M. LoSecco, E Feltresi, A. Zallo, J. Libby, AB Breon, FS Tehrani, G. Grosdidier, I. J. Forster, D. J. Summers, M. Spitznagel, B Stugu, S. F. Ganzhur, H. R. Band, B Spaan, H. B. Crawley, I. Kitayama, S. I. Serednyakov, MG Wilson, M Morii, KE Ford, D Best, Yuri Skovpen, R. J. Sobie, G. W. London, Y Groysman, J. C. Dingfelder, N. B. Sinev, BL Hartfiel, R. Liu, Daniele Del Re, Luth, A. Perazzo, C. Voena, L. Vitale, W. R. Innes, RG Jacobsen, E Chen, Alam, T. S. Mattison, D. A. Sanders, F. Martinez-Vidal, J. Chauveau, M. J.J. John, R. Aleksan, S. B. Zain, G. P. Dubois-Felsmann, H. A. Neal, S. Willocq, D. Monorchio, I Ofte, K Peters, T. B. Moore, Q. K. Wong, B. T. Meadows, J. Biesiada, A Samuel, V. B. Koptchev, V. E. Ozcan, S. A. Majewski, A Seiden, P. Tan, C. Hast, D. J. Lange, G. Piredda, A. Dvoretskii, W. Kozanecki, M. Legendre, GS Abrams, G. Raven, T. Held, C. Lu, D. Judd, Y. B. Pan, D. Bettoni, M. Lu, Dmytro Kovalskyi, J. I. Yi, C. M. Brown, Y Xie, H. W. Zhao, P. D. Dauncey, J. P. Lees, R. Kowalewski, A. Hocker, S. Ahmed, D. Gamba, A. Lusiani, F. Gallo, RK Mommsen, P. R. Burchat, S Schrenk, M. Pioppi, F. Polci, N. S. Knecht, V. P. Druzhinin, Y Karyotakis, W. J. Wisniewski, A. Stocchi, F. R. Wappler, CM Hawkes, F. Forti, P. C. Kim, A. Lazzaro, J. E. Brau, Tim Adye, X. Giroux, M. Carpinelli, M. T. Naisbit, Lydia Roos, M. Morganti, C. Voci, Eleonora Luppi, R. Baldini-Ferroli, J. Schwiening, Julie Malcles, R. D. Kass, Q. H. Guo, C. De La Vaissiere, H. Kagan, H. Schröder, R. J. Parry, D. Dujmic, Tetiana Hrynova, K. K. Gan, D. A. Roberts, Anders Ryd, N. D. Qi, J. M. Thompson, C. Yeche, A. D'Orazio, F. E. Taylor, A Chen, T. M. Hong, MA Mazur, BA Schumm, D. Aston, C Campagnari, GH de Monchenault, M. H. Schune, Guglielmo De Nardo, G. Marchiori, U. Uwer, BC Shen, J Wu, M. Zito, NA Roe, C. P. O'Grady, M Dickopp, W. Dunwoodie, PJ Clark, M. A. Baak, M Chao, A. V. Telnov, WT Ford, J. Olsen, E. O. Olaiya, M. A. Saeed, W. T. Meyer, Y. S. Zhu, A. Mihalyi, Eyges, R. Stroili, J Schubert, Wagner, Hyunyong Kim, Maurizio Biasini, N. R. Barlow, Pierluigi Paolucci, U Nauenberg, Kenji Hamano, T.R. McMahon, C Buchanan, TJ Harrison, Ulrik Egede, Matthew J. Graham, M. Fritsch, T Piatenko, F Couderc, RW Kadel, S. S. Hertzbach, N. Danielson, R. Messner, A Zghiche, R. Faccini, Sokoloff, F. Ferrarotto, A. J. Lankford, Marcella Bona, AD Bukin, C. Patrignani, A. Cunha, F. Palombo, D Brown, E. Paoloni, F. Salvatore, JF Hirschauer, EJ Hill, S. Pacetti, Owen Rosser Long, G. B. Mohanty, L. Wilden, A. Kreisel, Kefeng Wang, F. Galeazzi, R. Cowan, Gabriele Benelli, P. Taras, Lepeltier, R. F. Schwitters, Mohamed H. Ahmed, M. L. Kocian, P. Roudeau, P. D. Jackson, AJ Hart, A. P. Onuchin, R. K. Yamamoto, J. J. Back, G. Finocchiaro, L Zhang, H. Staengle, PJ Oddone, W Verkerke, J Brose, LM Mir, E. Grauges, X. R. Chen, S. Brunet, M. G. Green, Adrian John Bevan, R. Bartoldus, P Kyberd, Zongfu Yu, G. A. Cowan, M. Gaspero, J. P. Coleman, G. Eigen, M Bondioli, C. T. Potter, A. Snyder, Mario Giorgi, Monge, Michael Steinke, S. Morganti, L. Gladney, M. J. Charles, R. Eckmann, F. F. Wilson, L. Bosisio, S Otto, Sridhara Dasu, M. Davier, G Kukartsev, W Roethel, Karsten Koeneke, K. A. Ulmer, Francesco Fabozzi, G. R. Bonneaud, A. J.R. Weinstein, Colin Jessop, Mousumi Datta, R. Prepost, Andrei Gritsan, I Narsky, SD Foulkes, HK Hadavand, Azzolini, A. Khan, F. Bellini, T. Orimoto, M Barrett, A. Olivas, M. Weaver, G. Vasseur, K. T. Flood, M. L. Perl, J. T. Boyd, Joseph Izen, K. C. Schofield, A. Roodman, R Andreassen, T. Pulliam, S Rahatlou, J. A. Ernst, H. Briand, Roland Waldi, F. Ferroni, N. Cavallo, L. Lanceri, Stéphane Plaszczynski, D. A. Bowerman, Paul Fraser Harrison, P. M. Patel, S. J. Chen, J.H. Panetta, X. Chai, M. K. Sullivan, A. Jawahery, Y. G. Kolomensky, Gabriella Sciolla, W. M. Bugg, G. Cibinetto, B. N. Ratcliff, Emanuele Di Marco, RN Cahn, P Spradlin, Eschenburg, B. A. Petersen, J. Dorfan, A. M. Boyarski, C. L. Brown, JW Berryhill, MT Ronan, P. E. Kutter, P. K. Behera, Ph Leruste, F Muheim, G.J. Wagner, N. Arnaud, B. Mayer, A. K. Yarritu, Convery, I. M. Peruzzi, C. H. Cheng, Luigi Del Buono, B. Aubert, E Robutti, H. Marsiske, R. de Sangro, S. L. Wu, RS Dubitzky, F. Bianchi, A. E. Rubin, N. van Bakel, C. C. Young, F. Diberder, J. Allison, WA Wenzel, A. M. Lutz, Poireau, Hui Li, G. Rong, Sergio Grancagnolo, R Contri, S. Passaggio, R. S. Panvini, M Pelizaeus, Wilson, W. D. Hulsbergen, Xingguo Li, M. V. Purohit, J. Albert, Bruce Mellado, Klose, M. Wittgen, E Charles, Pieter David, Ziegler, V. B. Golubev, Roberto Covarelli, A. Palano, G. Cavoto, David Hutchcroft, Bryan Dahmes, S. Luitz, S Schenk, J. Va’vra, Sharma, D. Hufnagel, Peter Elmer, DP Stoker, E Won, A. M. Eichenbaum, S. Ricciardi, L Teodorescu, C. A. Heusch, E. A. Kravchenko, Crisostomo Sciacca, CT Day, J. C. Chen, P. Patteri, R Capra, D. Wright, B. Bhuyan, B. G. Fulsom, X. C. Lou, J. J. Walsh, A. M. Rahimi, T. E. Latham, D. N. Brown, Gaillard, G. D. Lafferty, T Brandt, M Pripstein, Markus Cristinziani, O. Igonkina, F. X. Yumiceva, J Button-Shafer, S. H. Robertson, G Nesom, S. Emery, G. Blaylock, Herbert Koch, A Hauke, Lombardo, F. Blanc, A. Satpathy, M. C. Hodgkinson, G. Graziani, E. I. Rosenberg, W. S. Lockman, A. A. Salnikov, M. C. Simani, F. Anulli, S. Dittongo, U Langenegger, Lees J.P., Poireau V., Tisserand V., Grauges E., Palano A., Eigen G., Brown D.N., Kolomensky Y.G., Fritsch M., Koch H., Schroeder T., Cheaib R., Hearty C., Mattison T.S., McKenna J.A., So R.Y., Blinov V.E., Buzykaev A.R., Druzhinin V.P., Golubev V.B., Kozyrev E.A., Kravchenko E.A., Onuchin A.P., Serednyakov S.I., Skovpen Y.I., Solodov E.P., Todyshev K.Y., Lankford A.J., Dey B., Gary J.W., Long O., Eisner A.M., Lockman W.S., Panduro Vazquez W., Chao D.S., Cheng C.H., Echenard B., Flood K.T., Hitlin D.G., Kim J., Li Y., Miyashita T.S., Ongmongkolkul P., Porter F.C., Rohrken M., Huard Z., Meadows B.T., Pushpawela B.G., Sokoloff M.D., Sun L., Smith J.G., Wagner S.R., 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.M., Piccolo M., Rotondo M., Zallo A., Passaggio S., Patrignani C., Shuve B.J., Lacker H.M., Bhuyan B., Mallik U., Chen C., Cochran J., Prell S., Gritsan A.V., Arnaud N., Davier M., Le Diberder F., Lutz A.M., Wormser G., Lange D.J., Wright D.M., Coleman J.P., Gabathuler E., Hutchcroft D.E., Payne D.J., Touramanis C., Bevan A.J., Di Lodovico F., Sacco R., Cowan G., Banerjee S., Davis C.L., Denig A.G., Gradl W., Griessinger K., Hafner A., Schubert K.R., Barlow R.J., Lafferty G.D., Cenci R., Jawahery A., Roberts D.A., Cowan R., Robertson S.H., Seddon R.M., Neri N., Palombo F., Cremaldi L., Godang R., Summers D.J., Taras P., De Nardo G., Sciacca C., Raven G., Jessop C.P., Losecco J.M., 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.R., 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.A., Lusiani A., Oberhof B., Paoloni E., Rama M., Rizzo G., Walsh J.J., Zani L., Smith A.J.S., Anulli F., Faccini R., Ferrarotto F., Ferroni F., Pilloni A., Piredda G., Bunger C., Dittrich S., Grunberg O., Hess M., Leddig T., Voss C., Waldi R., Adye T., Wilson F.F., Emery S., Vasseur G., Aston D., Cartaro C., Convery M.R., Dorfan J., Dunwoodie W., Ebert M., Field R.C., Fulsom B.G., Graham M.T., Hast C., Innes W.R., Kim P., Leith D.W.G.S., Luitz S., Macfarlane D.B., Muller D.R., Neal H., Ratcliff B.N., Roodman A., Sullivan M.K., Va'Vra J., Wisniewski W.J., Purohit M.V., Wilson J.R., Randle-Conde A., Sekula S.J., Ahmed H., Bellis M., Burchat P.R., Puccio E.M.T., Alam M.S., Ernst J.A., Gorodeisky R., Guttman N., Peimer D.R., Soffer A., Spanier S.M., Ritchie J.L., Schwitters R.F., Izen J.M., Lou X.C., Bianchi F., De Mori F., Filippi A., Gamba D., Lanceri L., Vitale L., Martinez-Vidal F., Oyanguren A., Albert J., Beaulieu A., Bernlochner F.U., King G.J., Kowalewski R., Lueck T., Nugent I.M., Roney J.M., Sobie R.J., Tasneem N., Gershon T.J., Harrison P.F., Latham T.E., Prepost R., Wu S.L., Lees, J. P., Poireau, V., Tisserand, V., Grauges, E., Palano, A., Eigen, G., Brown, D. N., Kolomensky, Y. G., Fritsch, M., Koch, H., Schroeder, T., Cheaib, R., Hearty, C., Mattison, T. S., Mckenna, J. A., So, R. Y., Blinov, V. E., Buzykaev, A. R., Druzhinin, V. P., Golubev, V. B., Kozyrev, E. A., Kravchenko, E. A., Onuchin, A. P., Serednyakov, S. I., Skovpen, Y. I., Solodov, E. P., Todyshev, K. Y., Lankford, A. J., Dey, B., Gary, J. W., Long, O., Eisner, A. M., Lockman, W. S., Panduro Vazquez, W., Chao, D. S., Cheng, C. H., Echenard, B., Flood, K. T., Hitlin, D. G., Kim, J., Li, Y., Miyashita, T. S., Ongmongkolkul, P., Porter, F. C., Rohrken, M., Huard, Z., Meadows, B. T., Pushpawela, B. G., Sokoloff, M. D., Sun, L., Smith, J. G., Wagner, S. R., 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. M., Piccolo, M., Rotondo, M., Zallo, A., Passaggio, S., Patrignani, C., Shuve, B. J., Lacker, H. M., Bhuyan, B., Mallik, U., Chen, C., Cochran, J., Prell, S., Gritsan, A. V., Arnaud, N., Davier, M., Le Diberder, F., Lutz, A. M., Wormser, G., Lange, D. J., Wright, D. M., Coleman, J. P., Gabathuler, E., Hutchcroft, D. E., Payne, D. J., Touramanis, C., Bevan, A. J., Di Lodovico, F., Sacco, R., Cowan, G., Banerjee, S., Davis, C. L., Denig, A. G., Gradl, W., Griessinger, K., Hafner, A., Schubert, K. R., Barlow, R. J., Lafferty, G. D., Cenci, R., Jawahery, A., Roberts, D. A., Cowan, R., Robertson, S. H., Seddon, R. M., Neri, N., Palombo, F., Cremaldi, L., Godang, R., Summers, D. J., Taras, P., De Nardo, G., Sciacca, C., Raven, G., Jessop, C. P., Losecco, J. M., 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. R., 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. A., Lusiani, A., Oberhof, B., Paoloni, E., Rama, M., Rizzo, G., Walsh, J. J., Zani, L., Smith, A. J. S., Anulli, F., Faccini, R., Ferrarotto, F., Ferroni, F., Pilloni, A., Piredda, G., Bunger, C., Dittrich, S., Grunberg, O., Hess, M., Leddig, T., Voss, C., Waldi, R., Adye, T., Wilson, F. F., Emery, S., Vasseur, G., Aston, D., Cartaro, C., Convery, M. R., Dorfan, J., Dunwoodie, W., Ebert, M., Field, R. C., Fulsom, B. G., Graham, M. T., Hast, C., Innes, W. R., Kim, P., Leith, D. W. G. S., Luitz, S., Macfarlane, D. B., Muller, D. R., Neal, H., Ratcliff, B. N., Roodman, A., Sullivan, M. K., Va'Vra, J., Wisniewski, W. J., Purohit, M. V., Wilson, J. R., Randle-Conde, A., Sekula, S. J., Ahmed, H., Bellis, M., Burchat, P. R., Puccio, E. M. T., Alam, M. S., Ernst, J. A., Gorodeisky, R., Guttman, N., Peimer, D. R., Soffer, A., Spanier, S. M., Ritchie, J. L., Schwitters, R. F., Izen, J. M., Lou, X. C., Bianchi, F., De Mori, F., Filippi, A., Gamba, D., Lanceri, L., Vitale, L., Martinez-Vidal, F., Oyanguren, A., Albert, J., Beaulieu, A., Bernlochner, F. U., King, G. J., Kowalewski, R., Lueck, T., Nugent, I. M., Roney, J. M., Sobie, R. J., Tasneem, N., Gershon, T. J., Harrison, P. F., Latham, T. E., Prepost, R., and Wu, S. L.
Subjects: Physics, Particle physics, Kjerne- og elementærpartikkelfysikk: 431 [VDP], Meson, 010308 nuclear & particles physics, Electron–positron annihilation, General Physics and Astronomy, BaBar experiment, Bottom meson, BaBar, PEP-II, B meson, Bottom mesons, Branching (polymer chemistry), 7. Clean energy, 01 natural sciences, Lower limit, HEP, NO, Nuclear and elementary particle physics: 431 [VDP], 0103 physical sciences, 010306 general physics, Bar (unit)
Abstract: A study of the two-body decays B±→XccK±, where Xcc refers to one charmonium state, is reported by the BABAR Collaboration using a data sample of 424 fb-1. The absolute determination of branching fractions for these decays are significantly improved compared to previous BABAR measurements. Evidence is found for the decay B+→X(3872)K+ at the 3σ level. The absolute branching fraction B[B+→X(3872)K+]=[2.1±0.6(stat)±0.3(syst)]×10-4 is measured for the first time. It follows that B[X(3872)→J/ψπ+π-]=(4.1±1.3)%, supporting the hypothesis of a molecular component for this resonance., This work is supported by the U.S. Department of Energy and National Science Foundation, the Natural Sciences and Engineering Research Council (Canada), Institute of High Energy Physics (China), the Commissariat `a l’Energie Atomique and Institut National de Physique Nucl´eaire et de Physique des Particules (France), the Bundesministerium für Bildung und Forschung and Deutsche Forschungsgemeinschaft (Germany), the Istituto Nazionale di Fisica Nucleare (Italy), the Foundation for Fundamental Research on Matter (The Netherlands), the Research Council of Norway, the Ministry of Science and Technology of the Russian Federation, and the Particle Physics and Astronomy Research Council (United Kingdom). Individuals have received support from CONACyT (Mexico), the A. P. Sloan Foundation, the Research Corporation, and the Alexander von Humboldt Foundation.
Published: 2020

12. Extraction of form Factors from a Four-Dimensional Angular Analysis of B¯→D*ℓ−ν¯ℓ

Author: V. B. Golubev, T. E. Latham, M. Carpinelli, D. B. MacFarlane, M. Rama, M. Rotondo, G. De Nardo, M. Röhrken, J. L. Ritchie, W. R. Innes, R. Y. So, A. Roodman, R. Sacco, Yu G. Kolomensky, J. P. Lees, R. M. Seddon, A. J.S. Smith, Roland Waldi, F. Ferroni, J. Dorfan, N. Tasneem, V. Santoro, Simon Akar, C. Bünger, J. J. Walsh, E. A. Kozyrev, B. T. Meadows, G. Raven, Paul Fraser Harrison, M. D. Sokoloff, P. R. Burchat, H. A. Neal, G. Casarosa, W. J. Wisniewski, D. N. Brown, Ju-Young Kim, Stephen Robert Wagner, Aidan Randle-Conde, G. R. Bonneaud, B. Bhuyan, A. Jawahery, R. Kowalewski, P. Ongmongkolkul, A. P. Onuchin, B. G. Fulsom, G. J. King, G. Cibinetto, M. K. Sullivan, S. Martellotti, C. H. Cheng, James R. Wilson, Andrei Gritsan, R. Gorodeisky, D. A. Roberts, V. Poireau, A. Hafner, E. M. T. Puccio, R. de Sangro, S. L. Wu, M. Piccolo, I. M. Nugent, R. Calabrese, G. Batignani, Crisostomo Sciacca, G. Rizzo, G. D. Lafferty, E. Ben-Haim, D. S. Chao, A. M. Lutz, A. R. Buzykaev, M. S. Alam, M. Davier, S. Passaggio, M. V. Purohit, S. H. Robertson, S. Emery, J. Albert, A. Beaulieu, J. Chauveau, F. De Mori, A. Palano, Herbert Koch, Heiko Lacker, J. M. Roney, S. Luitz, P. Patteri, J. Va’vra, A. M. Rossi, Joseph Izen, K. Griessinger, W. Dunwoodie, J. Ocariz, E. Fioravanti, J. G. Smith, G. Eigen, Florian Urs Bernlochner, F. Palombo, T. Lueck, M. Ebert, K. R. Schubert, Stephen Sekula, J. W. Gary, Abner Soffer, T. S. Miyashita, R. Cheaib, V. P. Druzhinin, C. Bozzi, K. Honscheid, V. E. Blinov, J. M. LoSecco, Z. C. Huard, W. Panduro Vazquez, F. Di Lodovico, D. J. Payne, R. J. Barlow, Tim Adye, B. G. Pushpawela, R. D. Kass, P. Taras, E. P. Solodov, M. Posocco, T. S. Mattison, Alessandro Pilloni, W. S. Lockman, D. R. Peimer, C. Hast, D. J. Lange, G. Piredda, F. Anulli, A. Filippi, J. A. McKenna, D. W. G. S. Leith, Alessandro Gaz, G. Calderini, E. Paoloni, R. Cowan, D. Gamba, J. P. Coleman, M. Bellis, Martino Margoni, T. J. Gershon, Maurizio Biasini, R. F. Schwitters, Owen Rosser Long, K. Yu Todyshev, R. Stroili, L. Sun, A. Oyanguren, span>B ar, Adrian John Bevan, F. Simonetto, S. Prell, I. Garzia, James H Cochran, A. Lusiani, C. Touramanis, C. L. Davis, X. C. Lou, R. Godang, P. C. Kim, O. Grünberg, M. Heß, M. Fritsch, R. Cenci, A. Zallo, Yu I. Skovpen, C. Hearty, Elisa Manoni, B. Echenard, D. J. Summers, D. Aston, D. Bernard, M. Bomben, R. J. Sobie, L. Vitale, F. Martinez-Vidal, Dominik Müller, span, N. Guttman, E. Luppi, M. T. Graham, Colin Jessop, R. Prepost, I. M. Peruzzi, G. Marchiori, E. A. Kravchenko, S. I. Serednyakov, G. Vasseur, K. T. Flood, F. Bianchi, J. A. Ernst, Douglas Wright, S. Dittrich, E. Gabathuler, F. C. Porter, E. Grauges, L. Zani, D. E. Hutchcroft, T. Leddig, W. Gradl, Mario Giorgi, R. Faccini, M. Chrzaszcz, M. R. Convery, C. Voß, F. Ferrarotto, A. J. Lankford, F. Le Diberder, A. M. Eisner, L. Lanceri, B. N. Ratcliff, Sw. Banerjee, Biplab Dey, G. Simi, Hamad Ahmed, D. Bettoni, N. Arnaud, A. Calcaterra, C. Cartaro, G. Finocchiaro, C. Patrignani, V. Tisserand, A. G. Denig, S. Bettarini, F. F. Wilson, B. Oberhof, G. A. Cowan, C. H. Chen, S. M. Spanier, G. Wormser, Y. Li, M. Verderi, T. Schroeder, U. Mallik, N. Neri, L. M. Cremaldi, D. G. Hitlin, R. C. Field, and F. Forti
Subjects: Physics, Quantum chromodynamics, Semileptonic decay, Particle physics, Meson, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, Crossing, Form factor (quantum field theory), General Physics and Astronomy, 01 natural sciences, 0103 physical sciences, High Energy Physics::Experiment, B meson, 010306 general physics
Abstract: An angular analysis of the decay B[over ¯]→D^{*}l^{-}ν[over ¯]_{l}, l∈{e,μ}, is reported using the full e^{+}e^{-} collision data set collected by the BABAR experiment at the ϒ(4S) resonance. One B meson from the ϒ(4S)→BB[over ¯] decay is fully reconstructed in a hadronic decay mode, which constrains the kinematics and provides a determination of the neutrino momentum vector. The kinematics of the semileptonic decay is described by the dilepton mass squared, q^{2}, and three angles. The first unbinned fit to the full four-dimensional decay rate in the standard model is performed in the so-called Boyd-Grinstein-Lebed approach, which employs a generic q^{2} parametrization of the underlying form factors based on crossing symmetry, analyticity, and QCD dispersion relations for the amplitudes. A fit using the more model-dependent Caprini-Lellouch-Neubert (CLN) approach is performed as well. Our form factor shapes show deviations from previous fits based on the CLN parametrization. The latest form factors also provide an updated prediction for the branching fraction ratio R(D^{*})≡B(B[over ¯]→D^{*}τ^{-}ν[over ¯]_{τ})/B(B[over ¯]→D^{*}l^{-}ν[over ¯]_{l})=0.253±0.005. Finally, using the well-measured branching fraction for the B[over ¯]→D^{*}l^{-}ν[over ¯]_{l} decay, a value of |V_{cb}|=(38.36±0.90)×10^{-3} is obtained that is consistent with the current world average for exclusive B[over ¯]→D^{(*)}l^{-}ν[over ¯]_{l} decays and remains in tension with the determination from inclusive semileptonic B decays to final states with charm.
Published: 2019

13. Observation of the Decay D0→K−π+e+e−

Author: C. Bünger, Stephen Sekula, A. Oyanguren, A. Jawahery, C. Bozzi, J. Chauveau, F. De Mori, K. Honscheid, E. A. Kozyrev, N. Tasneem, Heiko Lacker, Aidan Randle-Conde, R. J. Barlow, G. R. Bonneaud, R. Cenci, C. Touramanis, A. Zallo, Florian Urs Bernlochner, G. Cibinetto, B. Bhuyan, F. Palombo, T. Lueck, B. G. Fulsom, E. P. Solodov, T. S. Miyashita, S. Bettarini, S. Prell, O. Grünberg, D. W. G. S. Leith, Maurizio Biasini, M. Posocco, G. Calderini, James H Cochran, J. L. Ritchie, I. M. Peruzzi, R. Gorodeisky, D. A. Roberts, S. I. Serednyakov, A. G. Denig, K. R. Schubert, Owen Rosser Long, H. A. Neal, G. Casarosa, A. M. Rossi, F. Bianchi, A. Lusiani, V. P. Druzhinin, V. Poireau, T. S. Mattison, V. B. Golubev, G. Wormser, J. A. Ernst, W. Gradl, A. Palano, T. Schroeder, A. Hafner, Joseph Izen, L. Lanceri, S. Emery, R. Y. So, M. Bellis, S. Dittrich, C. Hearty, P. Ongmongkolkul, C. Hast, D. J. Lange, G. Piredda, W. J. Wisniewski, E. M. T. Puccio, A. R. Buzykaev, M. S. Alam, M. T. Graham, Eleonora Luppi, M. Piccolo, A. P. Onuchin, A. Beaulieu, S. Martellotti, M. Carpinelli, L. M. Cremaldi, J. M. Roney, L. Sun, T. J. Gershon, B. Echenard, James R. Wilson, G. Batignani, Z. C. Huard, W. Panduro Vazquez, G. J. King, S. Luitz, D. Bernard, P. C. Kim, M. V. Purohit, D. J. Summers, P. Patteri, D. G. Hitlin, W. R. Innes, R. F. Schwitters, J. Va’vra, E. A. Kravchenko, J. Albert, A. Filippi, Elisa Manoni, Colin Jessop, R. Prepost, D. Aston, J. G. Smith, R. C. Field, E. Ben-Haim, Adrian John Bevan, F. Forti, W. S. Lockman, Crisostomo Sciacca, F. Anulli, W. Dunwoodie, R. Cowan, J. Dorfan, J. J. Walsh, Y. Li, A. M. Eisner, I. M. Nugent, Alessandro Gaz, A. Calcaterra, i> ar, B. G. Pushpawela, Tim Adye, R. Sacco, D. N. Brown, A. M. Lutz, R. D. Kass, M. Bomben, R. J. Sobie, G. Finocchiaro, Sw. Banerjee, C. H. Cheng, T. E. Latham, S. H. Robertson, L. Vitale, F. Di Lodovico, G. Eigen, R. de Sangro, S. Passaggio, S. L. Wu, R. Faccini, F. Ferrarotto, A. J. Lankford, F. Martinez-Vidal, C. Cartaro, Dominik Müller, J. P. Lees, D. J. Payne, Herbert Koch, F. Le Diberder, G. D. Lafferty, N. Arnaud, R. Kowalewski, M. Rotondo, F. F. Wilson, M. R. Convery, A. J.S. Smith, Yu. I. Skovpen, G. De Nardo, Abner Soffer, D. S. Chao, B. Oberhof, M. Röhrken, Simon Akar, Yu G. Kolomensky, K. Griessinger, K. Yu. Todyshev, B. N. Ratcliff, M. Davier, V. Santoro, B. T. Meadows, G. Vasseur, A. Roodman, G. A. Cowan, Douglas Wright, K. T. Flood, G. Raven, R. Godang, R. M. Seddon, M. D. Sokoloff, E. Fioravanti, L. Zani, P. R. Burchat, E. Paoloni, R. Stroili, Roland Waldi, P. Taras, Alessandro Pilloni, F. Ferroni, D. R. Peimer, Roberto Calabrese, D. B. MacFarlane, D. Gamba, M. Rama, Paul Fraser Harrison, J. A. McKenna, Ju-Young Kim, Stephen Robert Wagner, Hamad Ahmed, J. Ocariz, M. K. Sullivan, N. Guttman, M. Heß, J. W. Gary, J. P. Coleman, E. Grauges, Mario Giorgi, R. Cheaib, G. Marchiori, E. Gabathuler, F. C. Porter, span> B, F. Simonetto, J. M. LoSecco, B. Dey, C. H. Chen, X. C. Lou, S. M. Spanier, Martino Margoni, M. Chrzaszcz, C. Voß, Vladimir Blinov, D. Bettoni, Andrei Gritsan, I. Garzia, D. E. Hutchcroft, C. Patrignani, G. Rizzo, V. Tisserand, T. Leddig, M. Verderi, U. Mallik, N. Neri, M. Fritsch, Gabriele Simi, C. L. Davis, and M. Ebert
Subjects: Physics, Particle physics, Annihilation, Branching fraction, 0103 physical sciences, General Physics and Astronomy, Resonance, Invariant mass, 010306 general physics, 01 natural sciences, Energy (signal processing), Standard Model
Abstract: We report the observation of the rare charm decay D^{0}→K^{-}π^{+}e^{+}e^{-}, based on 468 fb^{-1} of e^{+}e^{-} annihilation data collected at or close to the center-of-mass energy of the ϒ(4S) resonance with the BABAR detector at the SLAC National Accelerator Laboratory. We find the branching fraction in the invariant mass range 0.675
Published: 2019

14. The Mu2e calorimeter: Quality assurance of production crystals and SiPMs

Author: M. Martini, Ren-Yuan Zhu, G. Tassielli, Z. Usubov, E. Pedreschi, G. Corradi, D. G. Hitlin, D. Caiulo, V. Glagolev, F. Spinella, F. Cervelli, I. Sarra, F. Happacher, S. Miscetti, M. Cordelli, R. Donghia, V. Tereshchenko, F. Grancagnolo, N. Atanov, E. Diociaiuti, S. Donati, Gianantonio Pezzullo, I. I. Vasilyev, S. Giovannella, Yu.I. Davydov, F. Colao, B. Echenard, F. Raffaelli, A. Saputi, S. Di Falco, J. Budagov, Luca Morescalchi, M. Ricci, T. S. Miyashita, P. Murat, F. C. Porter, V. A. Baranov, Atanov, N., Baranov, V., Budagov, J., Caiulo, D., Cervelli, F., Colao, F., Cordelli, M., Corradi, G., Davydov, Yu. I., Di Falco, S., Diociaiuti, E., Donati, S., Donghia, R., Echenard, B., Giovannella, S., Glagolev, V., Grancagnolo, F., Happacher, F., Hitlin, D. G., Martini, M., Miscetti, S., Miyashita, T., Morescalchi, L., Murat, P., Pedreschi, E., Pezzullo, G., Porter, F., Raffaelli, F., Ricci, M., Saputi, A., Sarra, I., Spinella, F., Tassielli, G., Tereshchenko, V., Usubov, Z., Vasilyev, I. I., and Zhu, R. Y.
Subjects: Nuclear and High Energy Physics, Physics - Instrumentation and Detectors, Physics::Instrumentation and Detectors, FOS: Physical sciences, 01 natural sciences, High Energy Physics - Experiment, 030218 nuclear medicine & medical imaging, Crystal, High Energy Physics - Experiment (hep-ex), 03 medical and health sciences, 0302 clinical medicine, Silicon photomultiplier, 0103 physical sciences, Mu2e, Instrumentation, Physics, Mu2e, electromagnetic calorimeter, crystal calorimeter, Calorimeter (particle physics), 010308 nuclear & particles physics, business.industry, Instrumentation and Detectors (physics.ins-det), Technical specifications, 3. Good health, Cathode ray, Optoelectronics, business, Quality assurance
Abstract: The Mu2e calorimeter is composed of two disks each containing 1348 pure CsI crystals, each crystal read out by two arrays of 6x6 mm2 monolithic SiPMs. The experimental requirements have been translated in a series of technical specifications for both crystals and SiPMs. Quality assurance tests, on first crystal and then SiPM production batches, confirm the performances of preproduction samples previously assembled in a calorimeter prototype and tested with an electron beam. The production yield is sufficient to allow the construction of a calorimeter of the required quality in the expected times., Comment: 2 pages, 2 figures, 14th meeting on Advanced Detectors
Published: 2019
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15. Search for a Stable Six-Quark State at BABAR

Author: J. Chauveau, F. De Mori, Heiko Lacker, J. L. Ritchie, Yu. I. Skovpen, S. I. Serednyakov, S. Bettarini, G. Finocchiaro, R. Y. So, K. R. Schubert, J. Dorfan, F. F. Wilson, R. Gorodeisky, D. A. Roberts, Roberto Calabrese, B. Oberhof, B. Bhuyan, K. Yu. Todyshev, P. Taras, A. Hafner, Giulia Casarosa, G. Wormser, V. B. Golubev, E. M. T. Puccio, J. Ocariz, J. W. Gary, D. B. MacFarlane, G. Rizzo, M. Rama, E. Grauges, Stefan Spanier, S. Prell, James H Cochran, N. Tasneem, Mario Giorgi, R. F. Schwitters, A. Lusiani, H. A. Neal, A. Calcaterra, R. Cheaib, W. R. Innes, A. Palano, V. P. Druzhinin, Randall Sobie, T. Schroeder, C. H. Cheng, Maurizio Biasini, D. Bettoni, C. Cartaro, Aidan Randle-Conde, Abner Soffer, R. Cenci, I. M. Peruzzi, B. Echenard, G. R. Bonneaud, Tim Adye, David Hutchcroft, J. M. LoSecco, D. Bernard, P. C. Kim, A. Zallo, R. de Sangro, B. Dey, R. D. Kass, Owen Rosser Long, S. L. Wu, S. Luitz, P. Patteri, J. J. Walsh, J. Va’vra, W. J. Wisniewski, R. Stroili, A. G. Denig, J. P. Lees, R. Godang, M. T. Graham, Eleonora Luppi, G. J. King, D. N. Brown, I. Garzia, A. R. Buzykaev, M. S. Alam, A. P. Onuchin, L. Sun, R. Sacco, David Lange, W. Dunwoodie, Y. Li, C. Patrignani, B. G. Fulsom, V. Tisserand, J. A. McKenna, Adrian John Bevan, A. Beaulieu, B. G. Pushpawela, Andrei Gritsan, A. M. Lutz, E. Paoloni, N. Arnaud, Colin Jessop, R. Prepost, G. D. Lafferty, Douglas Wright, V. Santoro, L. Zani, R. Kowalewski, L. M. Cremaldi, J. A. Ernst, W. Gradl, S. Passaggio, L. Lanceri, M. R. Convery, C. Bünger, Florian Urs Bernlochner, James R. Wilson, F. Palombo, T. Lueck, A. J.S. Smith, E. Gabathuler, A. Jawahery, F. C. Porter, M. Heß, Martino Margoni, Simon Akar, D. G. Hitlin, G. Cibinetto, G. Vasseur, K. T. Flood, E. A. Kozyrev, A. Filippi, Alessandro Pilloni, D. R. Peimer, B. N. Ratcliff, Hamad Ahmed, B. T. Meadows, G. Raven, M. V. Purohit, R. C. Field, F. Forti, M. Chrzaszcz, M. D. Sokoloff, Nicola Neri, P. R. Burchat, R. Cowan, C. Voß, J. Albert, G. Eigen, D. W. G. S. Leith, A. M. Eisner, M. Ebert, Stephen Sekula, F. Bianchi, D. Gamba, E. P. Solodov, T. S. Miyashita, S. Dittrich, G. Calderini, C. Bozzi, K. Honscheid, C. Hearty, R. J. Barlow, M. Posocco, Sw. Banerjee, S. Emery, N. Guttman, G. De Nardo, D. J. Summers, M. Bellis, G. Marchiori, M. Bomben, L. Vitale, F. Ferrarotto, A. J. Lankford, F. Le Diberder, F. Martinez-Vidal, Dominik Müller, M. Fritsch, span, G. A. Cowan, J. M. Roney, X. C. Lou, Gabriele Simi, J. G. Smith, C. L. Davis, F. Di Lodovico, D. J. Payne, Riccardo Faccini, A. Roodman, R. M. Seddon, E. Fioravanti, Roland Waldi, F. Ferroni, M. Rotondo, M. Röhrken, Paul Fraser Harrison, V. Poireau, Ju-Young Kim, M. Piccolo, G. Batignani, E. Ben-Haim, Stephen Robert Wagner, M. K. Sullivan, A. M. Rossi, Joseph Izen, S. Martellotti, M. Carpinelli, I. M. Nugent, D. S. Chao, M. Davier, Z. C. Huard, W. Panduro Vazquez, W. S. Lockman, J. P. Coleman, F. Anulli, Alessandro Gaz, S. H. Robertson, Herbert Koch, K. Griessinger, A. Oyanguren, span>B ar, C. Touramanis, T. Leddig, O. Grünberg, Elisa Manoni, D. Aston, M. Verderi, T. E. Latham, T. S. Mattison, C. Hast, G. Piredda, U. Mallik, T. J. Gershon, F. Simonetto, Yu G. Kolomensky, E. A. Kravchenko, C. H. Chen, Vladimir Blinov, Crisostomo Sciacca, P. Ongmongkolkul, Ministerio de Ciencia e Innovación (España), 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, Rohrken, 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, 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, Bunger, C, Dittrich, S, Grunberg, 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, Lees, J. P., Poireau, V., Tisserand, V., Grauges, E., Palano, A., Eigen, G., Brown, D. N., Kolomensky, Yu. G., Fritsch, M., Koch, H., Schroeder, T., Hearty, C., Mattison, T. S., Mckenna, J. A., So, R. Y., Blinov, V. E., Buzykaev, A. R., Druzhinin, V. P., Golubev, V. B., Kozyrev, E. A., Kravchenko, E. A., Onuchin, A. P., Serednyakov, S. I., Skovpen, Y. I., Solodov, E. P., Todyshev, K. Y., Lankford, A. J., Gary, J. W., Long, O., Eisner, A. M., Lockman, W. S., Panduro Vazquez, W., Chao, D. S., Cheng, C. H., Echenard, B., Flood, K. T., Hitlin, D. G., Kim, J., Li, Y., Miyashita, T. S., Ongmongkolkul, P., Porter, F. C., Rohrken, M., Huard, Z., Meadows, B. T., Pushpawela, B. G., Sokoloff, M. D., Sun, L., Smith, J. G., Wagner, S. R., 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. M., Piccolo, M., Rotondo, M., Zallo, A., Passaggio, S., Patrignani, C., Lacker, H. M., Bhuyan, B., Mallik, U., Chen, C., Cochran, J., Prell, S., Gritsan, A. V., Arnaud, N., Davier, M., Le Diberder, F., Lutz, A. M., Wormser, G., Lange, D. J., Wright, D. M., Coleman, J. P., Gabathuler, E., Hutchcroft, D. E., Payne, D. J., Touramanis, C., Bevan, A. J., Di Lodovico, F., Sacco, R., Cowan, G., Banerjee, S., Davis, C. L., Denig, A. G., Gradl, W., Griessinger, K., Hafner, A., Schubert, K. R., Barlow, R. J., Lafferty, G. D., Cenci, R., Jawahery, A., Roberts, D. A., Cowan, R., Robertson, S. H., Seddon, R. M., Dey, B., Neri, N., Palombo, F., Cheaib, R., Cremaldi, L., Godang, R., Summers, D. J., Taras, P., De Nardo, G., Sciacca, C., Raven, G., Jessop, C. P., Losecco, J. M., 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. R., 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. A., Lusiani, A., Oberhof, B., Paoloni, E., Rama, M., Rizzo, G., Walsh, J. J., Zani, L., Smith, A. J. S., Anulli, F., Faccini, R., Ferrarotto, F., Ferroni, F., Pilloni, A., Piredda, G., Bunger, C., Dittrich, S., Grunberg, O., Hess, M., Leddig, T., Voss, C., Waldi, R., Adye, T., Wilson, F. F., Emery, S., Vasseur, G., Aston, D., Cartaro, C., Convery, M. R., Dorfan, J., Dunwoodie, W., Ebert, M., Field, R. C., Fulsom, B. G., Graham, M. T., Hast, C., Innes, W. R., Kim, P., Leith, D. W. G. S., Luitz, S., Macfarlane, D. B., Muller, D. R., Neal, H., Ratcliff, B. N., Roodman, A., Sullivan, M. K., Va'Vra, J., Wisniewski, W. J., Purohit, M. V., Wilson, J. R., Randle-Conde, A., Sekula, S. J., Ahmed, H., Bellis, M., Burchat, P. R., Puccio, E. M. T., Alam, M. S., Ernst, J. A., Gorodeisky, R., Guttman, N., Peimer, D. R., Soffer, A., Spanier, S. M., Ritchie, J. L., Schwitters, R. F., Izen, J. M., Lou, X. C., Bianchi, F., De Mori, F., Filippi, A., Gamba, D., Lanceri, L., Vitale, L., Martinez-Vidal, F., Oyanguren, A., Albert, J., Beaulieu, A., Bernlochner, F. U., King, G. J., Kowalewski, R., Lueck, T., Nugent, I. M., Roney, J. M., Sobie, R. J., Tasneem, N., Gershon, T. J., Harrison, P. F., Latham, T. E., Prepost, R., Wu, S. L., Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE (UMR_7585)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Département de Physique des Particules (ex SPP) (DPP), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, BaBar, Lees J.P., Poireau V., Tisserand V., Grauges E., Palano A., Eigen G., Brown D.N., Kolomensky Yu.G., Fritsch M., Koch H., Schroeder T., Hearty C., Mattison T.S., McKenna J.A., So R.Y., Blinov V.E., Buzykaev A.R., Druzhinin V.P., Golubev V.B., Kozyrev E.A., Kravchenko E.A., Onuchin A.P., Serednyakov S.I., Skovpen Y.I., Solodov E.P., Todyshev K.Y., Lankford A.J., Gary J.W., Long O., Eisner A.M., Lockman W.S., Panduro Vazquez W., Chao D.S., Cheng C.H., Echenard B., Flood K.T., Hitlin D.G., Kim J., Li Y., Miyashita T.S., Ongmongkolkul P., Porter F.C., Rohrken M., Huard Z., Meadows B.T., Pushpawela B.G., Sokoloff M.D., Sun L., Smith J.G., Wagner S.R., 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.M., Piccolo M., Rotondo M., Zallo A., Passaggio S., Patrignani C., Lacker H.M., Bhuyan B., Mallik U., Chen C., Cochran J., Prell S., Gritsan A.V., Arnaud N., Davier M., Le Diberder F., Lutz A.M., Wormser G., Lange D.J., Wright D.M., Coleman J.P., Gabathuler E., Hutchcroft D.E., Payne D.J., Touramanis C., Bevan A.J., Di Lodovico F., Sacco R., Cowan G., Banerjee S., Davis C.L., Denig A.G., Gradl W., Griessinger K., Hafner A., Schubert K.R., Barlow R.J., Lafferty G.D., Cenci R., Jawahery A., Roberts D.A., Cowan R., Robertson S.H., Seddon R.M., Dey B., Neri N., Palombo F., Cheaib R., Cremaldi L., Godang R., Summers D.J., Taras P., De Nardo G., Sciacca C., Raven G., Jessop C.P., Losecco J.M., 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.R., 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.A., Lusiani A., Oberhof B., Paoloni E., Rama M., Rizzo G., Walsh J.J., Zani L., Smith A.J.S., Anulli F., Faccini R., Ferrarotto F., Ferroni F., Pilloni A., Piredda G., Bunger C., Dittrich S., Grunberg O., Hess M., Leddig T., Voss C., Waldi R., Adye T., Wilson F.F., Emery S., Vasseur G., Aston D., Cartaro C., Convery M.R., Dorfan J., Dunwoodie W., Ebert M., Field R.C., Fulsom B.G., Graham M.T., Hast C., Innes W.R., Kim P., Leith D.W.G.S., Luitz S., Macfarlane D.B., Muller D.R., Neal H., Ratcliff B.N., Roodman A., Sullivan M.K., Va'Vra J., Wisniewski W.J., Purohit M.V., Wilson J.R., Randle-Conde A., Sekula S.J., Ahmed H., Bellis M., Burchat P.R., Puccio E.M.T., Alam M.S., Ernst J.A., Gorodeisky R., Guttman N., Peimer D.R., Soffer A., Spanier S.M., Ritchie J.L., Schwitters R.F., Izen J.M., Lou X.C., Bianchi F., De Mori F., Filippi A., Gamba D., Lanceri L., Vitale L., Martinez-Vidal F., Oyanguren A., Albert J., Beaulieu A., Bernlochner F.U., King G.J., Kowalewski R., Lueck T., Nugent I.M., Roney J.M., Sobie R.J., Tasneem N., Gershon T.J., Harrison P.F., Latham T.E., Prepost R., Wu S.L., Laboratoire d'Annecy de Physique des Particules (LAPP/Laboratoire d'Annecy-le-Vieux de Physique des Particules), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Skovpen, Yu. I., Todyshev, K. Yu., Röhrken, M., de Sangro, R., Banerjee, Sw., Bünger, C., Grünberg, O., Heß, M., Voß, C., Va’Vra, J., Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Département de Physique des Particules (ex SPP) (DPhP), Massachusetts Institute of Technology. Laboratory for Nuclear Science, and Cowan, Ray F
Subjects: Kjerne- og elementærpartikkelfysikk: 431 [VDP], branching ratio: upper limit, Electron–positron annihilation, Bound state, General Physics and Astronomy, BaBar experiment, Quarks, Upsilon(10355): rare decay, Upsilon(10355): electroproduction, Upsilon(10020): branching ratio, particle: exotic, upsilon mesons: hadronic decay, 01 natural sciences, decay, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), Upsilon(10020): electroproduction, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Physic, QC, QB, Exotic particles, Physics, new physics: search for, Settore FIS/01 - Fisica Sperimentale, electron positron: colliding beams, detector, limits, decay, Nuclear and elementary particle physics: 431 [VDP], Particles, Dark matter (Astronomy), Confidence level, baryon: dark matter, Upsilon(10020): rare decay, Branching fraction, Matèria fosca (Astronomia), Quark, Particle physics, Dark matter, FOS: Physical sciences, Lambda: pair production, electron positron: annihilation, Partícules (Matèria), NO, Physics and Astronomy (all), BABAR experiment, 0103 physical sciences, Atomic physic, Upsilon(10355): branching ratio, 010306 general physics, detector, dark matter: mass, State (functional analysis), stability, SLAC PEP Stor, HEP, A-stable, BaBar, Elementary Particles and Fields, High Energy Physics::Experiment, limits, experimental results
Abstract: Recent investigations have suggested that the six-quark combination uuddss could be a deeply bound state (S) that has eluded detection so far, and a potential dark matter candidate. We report the first search for a stable, doubly strange six-quark state in Upsilon -> S anti-Lambda anti-Lambda decays based on a sample of 90 million Upsilon(2S) and 110 million Upsilon(3S) decays collected by the BABAR experiment. No signal is observed, and 90% confidence level limits on the combined Upsilon(2S,3S) -> S anti-Lambda anti-Lambda branching fraction in the range (1.2-1.4)x10^-7 are derived for m_S < 2.05 GeV. These bounds set stringent limits on the existence of such exotic particles., 7 pages, 4 figures, published version
Published: 2019

16. Design and test of the Mu2e undoped CsI + SiPM crystal calorimeter

Author: G. Tassielli, F. Grancagnolo, M. Cordelli, S. Giovannella, Ren-Yuan Zhu, Yu.I. Davydov, F. Colao, D. Caiulo, B. Echenard, I. I. Vasilyev, R. Donghia, M. Ricci, V. Tereshchenko, J. Budagov, T. S. Miyashita, S. Donati, V. Glagolev, F. Happacher, Luca Morescalchi, M. Corradi, S. Miscetti, E. Diociaiuti, Gianantonio Pezzullo, F. Spinella, E. Pedreschi, D. G. Hitlin, F. Cervelli, F. Raffaelli, N. Atanov, A. Saputi, S. Di Falco, M. Martini, Z. Usubov, P. Murat, F. C. Porter, V. A. Baranov, I. Sarra, Atanov, N., Baranov, V., Budagov, J., Caiulo, D., Cervelli, F., Colao, F., Cordelli, M., Corradi, G., Davydov, Yu. I., Di Falco, S., Diociaiuti, E., Donati, S., Donghia, R., Echenard, B., Giovannella, S., Glagolev, V., Grancagnolo, F., Happacher, F., Hitlin, D., Martini, M., Miscetti, S., Miyashita, T., Morescalchi, L., Murat, P., Pedreschi, E., Pezzullo, G., Porter, F., Raffaelli, F., Ricci, M., Saputi, A., Sarra, I., Spinella, F., Tassielli, G., Tereshchenko, V., Usubov, Z., Vasilyev, I. I., and Zhu, R. Y.
Subjects: Physics, Nuclear and High Energy Physics, Muon, Calorimeter (particle physics), Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, business.industry, SiPMs, Calorimetry, 01 natural sciences, Particle identification, Silicon photomultiplier, Optics, 0103 physical sciences, Mu2e, Cathode ray, High Energy Physics::Experiment, Test beam, Fermilab, Pure CsI crystals, 010306 general physics, business, Instrumentation
Abstract: The Mu2e experiment at Fermilab will search for the charged-lepton flavour violating neutrino-less conversion of a negative muon into an electron in the field of an aluminum nucleus. The calorimeter plays an important role in providing a fast trigger filter, excellent particle identification and a seeding for track reconstruction. Its requirements are to provide an energy (timing) resolution better than 10% (0.5 ns) and a position resolution below 1 cm, for 100 MeV electrons. The calorimeter consists of two disks, each one made of 674 un-doped CsI crystals readout by two large area arrays of 2 × 3 UV-extended SiPMs of 6 × 6 mm^2 dimensions. A large scale prototype (Module-0) has been constructed and tested with an electron beam in the energy range between 60 and 120 MeV at the BTF of Frascati National Laboratories. Results demonstrated that this calorimeter satisfies the Mu2e requirements.
Published: 2019
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17. Mu2e calorimeter readout system

Author: E. Pedreschi, J. Budagov, D. G. Hitlin, G. Polacco, F. Happacher, S. Miscetti, N. Atanov, S. Donati, M. Sozzi, M. Cordelli, Luca Baldini, I. I. Vasilyev, A. Saputi, Gianantonio Pezzullo, M. Ricci, Luigi Lazzeri, Ren-Yuan Zhu, S. Faetti, S. Giudici, S. Di Falco, Z. Usubov, T. S. Miyashita, I. Sarra, Luca Morescalchi, F. Grancagnolo, F. Colao, P. Murat, F. Cervelli, R. Donghia, B. Echenard, F. Spinella, G. Corradi, F. C. Porter, Fabrizio Cei, V. Tereshchenko, Donato Nicolo, F. Raffaelli, V. A. Baranov, D. Caiulo, S. Giovannella, Yu.I. Davydov, V. Glagolev, M. Martini, G. Tassielli, Francesco D'Errico, E. Diociaiuti, Atanov, N., Baranov, V., Baldini, L., Budagov, J., Caiulo, D., Cei, F., Cervelli, F., Colao, F., Cordelli, M., Corradi, G., Davydov, Yu. I., D'Errico, F., Di Falco, S., Diociaiuti, E., Donati, S., Donghia, R., Echenard, B., Faetti, S., Giovannella, S., Giudici, S., Glagolev, V., Grancagnolo, F., Happacher, F., Hitlin, D. G., Lazzeri, L., Martini, M., Miscetti, S., Miyashita, T., Morescalchi, L., Murat, P., Nicolò, D., Pedreschi, E., Pezzullo, G., Polacco, G., Porter, F., Raffaelli, F., Ricci, M., Saputi, A., Sarra, I., Sozzi, M., Spinella, F., Tassielli, G., Tereshchenko, V., Usubov, Z., Vasilyev, I. I., and Zhu, R. Y.
Subjects: Nuclear and High Energy Physics, Physics - Instrumentation and Detectors, Physics::Instrumentation and Detectors, FOS: Physical sciences, Mu2e calorimeter, 01 natural sciences, Signal, High Energy Physics - Experiment, 030218 nuclear medicine & medical imaging, High Energy Physics - Experiment (hep-ex), 03 medical and health sciences, 0302 clinical medicine, Silicon photomultiplier, 0103 physical sciences, Mu2e, Waveform, Instrumentation, Digitizer, Physics, Front-end electronics, Radiation tolerance, Calorimeter (particle physics), 010308 nuclear & particles physics, business.industry, Amplifier, Linear regulator, High voltage, Instrumentation and Detectors (physics.ins-det), Optoelectronics, business
Abstract: The Mu2e electromagnetic calorimeter is made of two disks of un-doped parallelepiped CsI crystals readout by SiPM. There are 674 crystals in one disk and each crystal is readout by an array of two SiPM. The readout electronics is composed of two types of modules: 1) the front-end module hosts the shaping amplifier and the high voltage linear regulator; since one front-end module is interfaced to one SiPM, a total of 2696 modules are needed for the entire calorimeter; 2) a waveform digitizer provides a further level of amplification and digitizes the SiPM signal at the sampling frequency of $200\ \text{M}\text{Hz}$ with 12-bits ADC resolution; since one board digitizes the data received from 20 SiPMs, a total of 136 boards are needed. The readout system operational conditions are hostile: ionization dose of $20\ \text{krads}$, neutron flux of $10^{12}\ \mathrm{n}(1\ \text{MeVeq})/\text{cm}^2$, magnetic field of $1\ \text{T}$ and in vacuum level of $10^{-4}\ \text{Torr}$. A description of the readout system and qualification tests is reported.
Published: 2019
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18. Study of the reactions e+e−→π+π−π0π0π0 and π+π−π0π0η at center-of-mass energies from threshold to 4.35 GeV using initial-state radiation

Author: J. P. Lees, V. Poireau, V. Tisserand, E. Grauges, A. Palano, G. Eigen, D. N. Brown, Yu. G. Kolomensky, M. Fritsch, H. Koch, T. Schroeder, R. Cheaib, C. Hearty, T. S. Mattison, J. A. McKenna, R. Y. So, V. E. Blinov, A. R. Buzykaev, V. P. Druzhinin, V. B. Golubev, E. A. Kozyrev, E. A. Kravchenko, A. P. Onuchin, S. I. Serednyakov, Yu. I. Skovpen, E. P. Solodov, K. Yu. Todyshev, A. J. Lankford, B. Dey, J. W. Gary, O. Long, A. M. Eisner, W. S. Lockman, W. Panduro Vazquez, D. S. Chao, C. H. Cheng, B. Echenard, K. T. Flood, D. G. Hitlin, J. Kim, Y. Li, D. X. Lin, S. Middleton, T. S. Miyashita, P. Ongmongkolkul, J. Oyang, F. C. Porter, M. Röhrken, Z. Huard, B. T. Meadows, B. G. Pushpawela, M. D. Sokoloff, L. Sun, J. G. Smith, S. R. Wagner, D. Bernard, M. Verderi, D. Bettoni, C. Bozzi, R. Calabrese, G. Cibinetto, E. Fioravanti, I. Garzia, E. Luppi, V. Santoro, A. Calcaterra, R. de Sangro, G. Finocchiaro, S. Martellotti, P. Patteri, I. M. Peruzzi, M. Piccolo, M. Rotondo, A. Zallo, S. Passaggio, C. Patrignani, B. J. Shuve, H. M. Lacker, B. Bhuyan, U. Mallik, C. Chen, J. Cochran, S. Prell, A. V. Gritsan, N. Arnaud, M. Davier, F. Le Diberder, A. M. Lutz, G. Wormser, D. J. Lange, D. M. Wright, J. P. Coleman, E. Gabathuler, D. E. Hutchcroft, D. J. Payne, C. Touramanis, A. J. Bevan, F. Di Lodovico, R. Sacco, G. Cowan, Sw. Banerjee, C. L. Davis, A. G. Denig, W. Gradl, K. Griessinger, A. Hafner, K. R. Schubert, R. J. Barlow, G. D. Lafferty, R. Cenci, A. Jawahery, D. A. Roberts, R. Cowan, S. H. Robertson, R. M. Seddon, N. Neri, F. Palombo, L. Cremaldi, R. Godang, D. J. Summers, P. Taras, G. De Nardo, C. Sciacca, G. Raven, C. P. Jessop, J. M. LoSecco, K. Honscheid, R. Kass, A. Gaz, M. Margoni, M. Posocco, G. Simi, F. Simonetto, R. Stroili, S. Akar, E. Ben-Haim, M. Bomben, G. R. Bonneaud, G. Calderini, J. Chauveau, G. Marchiori, J. Ocariz, M. Biasini, E. Manoni, A. Rossi, G. Batignani, S. Bettarini, M. Carpinelli, G. Casarosa, M. Chrzaszcz, F. Forti, M. A. Giorgi, A. Lusiani, B. Oberhof, E. Paoloni, M. Rama, G. Rizzo, J. J. Walsh, L. Zani, A. J. S. Smith, F. Anulli, R. Faccini, F. Ferrarotto, F. Ferroni, A. Pilloni, G. Piredda, C. Bünger, S. Dittrich, O. Grünberg, M. Heß, T. Leddig, C. Voß, R. Waldi, T. Adye, F. F. Wilson, S. Emery, G. Vasseur, D. Aston, C. Cartaro, M. R. Convery, J. Dorfan, W. Dunwoodie, M. Ebert, R. C. Field, B. G. Fulsom, M. T. Graham, C. Hast, W. R. Innes, P. Kim, D. W. G. S. Leith, S. Luitz, D. B. MacFarlane, D. R. Muller, H. Neal, B. N. Ratcliff, A. Roodman, M. K. Sullivan, J. Va’vra, W. J. Wisniewski, M. V. Purohit, J. R. Wilson, A. Randle-Conde, S. J. Sekula, H. Ahmed, N. Tasneem, M. Bellis, P. R. Burchat, E. M. T. Puccio, M. S. Alam, J. A. Ernst, R. Gorodeisky, N. Guttman, D. R. Peimer, A. Soffer, S. M. Spanier, J. L. Ritchie, R. F. Schwitters, J. M. Izen, X. C. Lou, F. Bianchi, F. De Mori, A. Filippi, D. Gamba, L. Lanceri, L. Vitale, F. Martinez-Vidal, A. Oyanguren, J. Albert, A. Beaulieu, F. U. Bernlochner, G. J. King, R. Kowalewski, T. Lueck, C. Miller, I. M. Nugent, J. M. Roney, R. J. Sobie, T. J. Gershon, P. F. Harrison, T. E. Latham, R. Prepost, and S. L. Wu
Subjects: Physics, Particle physics, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, Hadron, 7. Clean energy, 01 natural sciences, Omega, 0103 physical sciences, Mass spectrum, Pi, Intermediate state, Invariant mass, 010306 general physics
Abstract: We study the processes $e^+e^-\to 2(\pi^+\pi^-)\pi^0\pi^0\pi^0\gamma$ and $2(\pi^+\pi^-)\pi^0\pi^0\eta\gamma$ in which an energetic photon is radiated from the initial state. The data were collected with the \babar~ detector at SLAC. About 14\,000 and 4700 events, respectively, are selected from a data sample corresponding to an integrated luminosity of 469 fb^{-1}. The invariant mass of the hadronic final state defines the effective \epem center-of-mass energy. The center-of-mass energies range from threshold to 4.5 GeV. From the mass spectra, the first ever measurements of the $e^+e^-\to 2(\pi^+\pi^-)\pi^0\pi^0\pi^0$ and the $e^+e^-\to2(\pi^+\pi^-)\pi^0\pi^0\eta$ cross sections are performed. The contributions from $\omega\pi^+\pi^-\pi^0\pi^0$, $\eta2(\pi^+\pi^-)$, and other intermediate states are presented. We observe the $J/\psi$ and $\psi(2S)$ in most of these final states and measure the corresponding branching fractions, many of them for the first time.
Published: 2018

19. First Evidence for cos2β>0 and Resolution of the Cabibbo-Kobayashi-Maskawa Quark-Mixing Unitarity Triangle Ambiguity

Author: V. B. Golubev, K. Chilikin, L. Zani, J. R. Wilson, Iki Adachi, T. S. Miyashita, Doo Young Kim, A. Palano, S. Emery, M. Feindt, J. B. Kim, K. Griessinger, D. Epifanov, A. Hafner, W. R. Innes, David Hutchcroft, O. Long, R. Cenci, Brian Meadows, J. M. Izen, M. Bellis, Eleonora Guido, H. Neal, K. Inami, H. Ye, R. Kass, S. Martellotti, D. W G S Leith, G. Schnell, E. Won, R. Pestotnik, S. Nishida, A. Calcaterra, J. P. Coleman, J. A. McKenna, T. E. Browder, J. Ocariz, M. T. Graham, F. Ferroni, R. J. Sobie, A. Roodman, S. Pardi, J. L. Ritchie, Noritaka Shimizu, Vikas Bansal, Eleonora Luppi, A. Beaulieu, Tara Nanut, T. Uglov, A. V. Gritsan, G. Wormser, A. G. Denig, Vitaly Vorobyev, B. N. Ratcliff, R. Y. So, T. Kuhr, S. R. Wagner, G. De Nardo, H. M. Lacker, M. Starič, D. Liventsev, E. Nakano, Z. Drásal, V. Savinov, D. J. Summers, C. H. Cheng, H. Ono, D. A. Roberts, S. Al Said, T. Matsuda, A. J S Smith, D. S. Chao, Vladimir Zhulanov, R. Kroeger, E. Ben-Haim, M. E. Sevior, I. S. Lee, S. J. Sekula, C. Bozzi, R. Mizuk, M. Piccolo, F. Di Lodovico, S. Uno, R. Kulasiri, T. Schroeder, A. J. Lankford, S. Sandilya, R. Godang, P. Goldenzweig, P. Pakhlov, N. Tasneem, J. Albert, G.V. Russo, J. Cochran, Yu. G. Kolomensky, H. Hayashii, J. Libby, C. Van Hulse, T. A. Shibata, Z. C. Huard, U. Tamponi, S. Passaggio, H. Miyata, B. Pal, Y. B. Li, Marcin Chrzaszcz, F. Le Diberder, Michael Sokoloff, Ray Franklin Cowan, P. C. Kim, F. U. Bernlochner, P. Patteri, Prafulla Kumar Behera, W. S. Hou, I. M. Peruzzi, B. Oberhof, F. Simonetto, J. G. Shiu, G. J. King, V. Babu, K. T. Kim, J. K. Ahn, A. Soffer, M. Z. Wang, K. Kinoshita, B. Bhuyan, N. Guttman, H. Park, A. Bozek, S. H. Kim, J. Dorfan, M. Gelb, H. Koch, Vladimir Popov, A. Zallo, S. Jia, D. N. Brown, R. Stroili, R. Ayad, K. Cho, C. Hearty, M. Iwasaki, P. K. Resmi, Marcello Rotondo, B. G. Cheon, James E. Fast, A. Kuzmin, M. Ebert, T. K. Pedlar, T. Kumita, K. Yu. Todyshevx, F. Forti, Y. Choi, K. J. Nath, E. A. Kravchenko, L. Santelj, K. H. Kang, T. Leddig, Shih-Chang Lee, D. Matvienko, C. Voß, M. Bomben, J. Haba, Dominik Müller, X. C. Lou, C. Chen, G. Finocchiaro, C. Z. Yuan, Y. Jin, A. J. Schwartz, C. H. Wang, Alberto Lusiani, Semen Eidelman, E. Grauges, L. Vitale, S. Ogawa, A. Rossi, Y. Watanabe, J. P. Lees, A. Filippi, S. E. Vahsen, G. A. Cowan, C. Bünger, C. Sciacca, R. C. Field, Gabriele Simi, G. Eigen, R. Gorodeisky, F. Martinez-Vidal, J. J. Walsh, C. Schwanda, R. Itoh, H. Ahmed, D. Cinabro, Tao Luo, F. Tenchini, Th. Müller, G. Rizzo, Y. Sakai, D. Bernard, J. Chauveau, S. I. Serednyakov, F. Palombo, S. Korpar, E. Gabathuler, T. Ferber, Tagir Aushev, C. Cartaro, Y. Onuki, A. Jawahery, M. Nayak, G. Cibinetto, M. K. Sullivan, M. Margoni, Y. Guan, A. Oyanguren, E. Waheed, R. M. Seddon, Nicola Neri, J. W. Gary, V. Gaur, W. Panduro Vazquez, Y. Iwasaki, C. Touramanis, S. Luitz, K. R. Schubert, P. Taras, S. Hirose, D. J. Payne, E. Fioravanti, Y. Li, Y. J. Kwon, V.N. Zhilich, F. Ferrarotto, E. M. T. Puccio, G. B. Mohanty, P. L. Wang, B. Golob, T. Lueck, Roland Waldi, Biplab Dey, Peter Kodys, Fergus Wilson, M. A. Giorgi, E. Paoloni, A. Zupanc, F. De Mori, A. B. Kaliyar, P. F. Harrison, H. Kichimi, D. G. Hitlin, H. K. Moon, M. R. Convery, A. Chen, F. Bianchi, G. Piredda, O. Schneider, U. Mallik, R. Cheaib, Y. Yusa, Bingran Wang, M. Röhrken, K. Senyo, J. S. Lange, V. Santoro, W. J. Wisniewski, C. Hast, W. W. Jacobs, A. M. Eisner, I. M. Nugent, M. T. Hedges, M. Carpinelli, K. Miyabayashi, I. Badhrees, M. Posocco, B. G. Fulsom, R. F. Schwitters, G. Varner, R. Mussa, A. M. Lutz, K. T. Flood, G. Casarosa, Simon Akar, M. Takizawa, Pavel Krokovny, R. Calabrese, V. E. Blinov, A. R. Buzykaev, A. Ishikawa, G. Vasseur, Roger Barlow, Ju-Young Kim, Miriam Heß, Y. Seino, S. Bettarini, R. de Sangro, M. Nakao, M. Biasini, P. Križan, G. Raven, Alexander Bondar, D. Gamba, R. Sacco, L. Cremaldi, Yu. I. Skovpen, C. P. Shen, K. Honscheid, G. Calderini, Elisa Manoni, R. Kowalewski, N. Arnaud, V.E. Shebalin, M. Heck, L. K. Li, M. V. Purohit, S. Di Carlo, D. M. Asner, K. Hayasaka, Sw. Banerjee, Soumen Paul, M. Uchida, G. Pakhlova, P. R. Burchat, G. Karyan, V. Bhardwaj, C. L. Hsu, J. A. Ernst, S. L. Wu, P. Ongmongkolkul, H. Atmacan, D. B. Macfarlane, Alessandro Pilloni, K. K. Joo, S. Dittrich, D. R. Peimer, Kiyoshi Tanida, Timothy Gershon, D. Aston, L. Li Gioi, A. Garmash, F. Anulli, Z. Doležal, J. M. Roney, Yoshinobu Unno, S. Zakharov, M. Lubej, G. Inguglia, V. Zhukova, M. Merola, A. K. Giri, K. Sumisawa, S. M. Spanier, G. Batignani, M. Masuda, C. L. Davis, M. Fritsch, A. P. Onuchin, L. Sun, Adrian John Bevan, Somnath Choudhury, Leo Piilonen, O. Seon, Frank Simon, D. J. Lange, Matteo Rama, James G. Smith, V. P. Druzhinin, D. M. Wright, M. S. Alam, E. Solovieva, R. Prepost, N. Dash, M. Rozanska, D. Kotchetkov, T. Adye, A. Randle-Conde, T. Julius, M. Verderi, R. Faccini, V. Poireau, T. Sumiyoshi, J. M. Losecco, G. Marchiori, F. C. Porter, Martin Ritter, T. Sanuki, S. Cunliffe, J. Va'Vra, W. S. Lockman, M. Salehi, H. Aihara, George Lafferty, C. P. Jessop, T. Hara, T. Mori, Oliver Grünberg, G. R. Bonneaud, N. K. Nisar, I. Pavelkin, D. Bettoni, Z. P. Zhang, S. Prell, B. G. Pushpawela, A. Gaz, S. H. Robertson, L. Lanceri, Jyoti Prakash Biswal, B. Echenard, M. Davier, J. MacNaughton, A. M. Bakich, W. Dunwoodie, D. Červenkov, Rocky Bala Garg, T. S. Mattison, W. Gradl, E. P. Solodov, I. Garzia, Thomas Latham, C. Patrignani, V. Tisserand, and M. Bračko
Subjects: Quark, Physics, Particle physics, Unitarity, 010308 nuclear & particles physics, Electron–positron annihilation, Hadron, General Physics and Astronomy, Dalitz plot, 01 natural sciences, B-factory, KEKB, 0103 physical sciences, CP violation, 010306 general physics
Abstract: We present first evidence that the cosine of the CP-violating weak phase 2β is positive, and hence exclude trigonometric multifold solutions of the Cabibbo-Kobayashi-Maskawa (CKM) Unitarity Triangle using a time-dependent Dalitz plot analysis of B^{0}→D^{(*)}h^{0} with D→K_{S}^{0}π^{+}π^{-} decays, where h^{0}∈{π^{0},η,ω} denotes a light unflavored and neutral hadron. The measurement is performed combining the final data sets of the BABAR and Belle experiments collected at the ϒ(4S) resonance at the asymmetric-energy B factories PEP-II at SLAC and KEKB at KEK, respectively. The data samples contain (471±3)×10^{6}BB[over ¯] pairs recorded by the BABAR detector and (772±11)×10^{6}BB[over ¯] pairs recorded by the Belle detector. The results of the measurement are sin2β=0.80±0.14(stat)±0.06(syst)±0.03(model) and cos2β=0.91±0.22(stat)±0.09(syst)±0.07(model). The result for the direct measurement of the angle β of the CKM Unitarity Triangle is β=[22.5±4.4(stat)±1.2(syst)±0.6(model)]°. The measurement assumes no direct CP violation in B^{0}→D^{(*)}h^{0} decays. The quoted model uncertainties are due to the composition of the D^{0}→K_{S}^{0}π^{+}π^{-} decay amplitude model, which is newly established by performing a Dalitz plot amplitude analysis using a high-statistics e^{+}e^{-}→cc[over ¯] data sample. CP violation is observed in B^{0}→D^{(*)}h^{0} decays at the level of 5.1 standard deviations. The significance for cos2β>0 is 3.7 standard deviations. The trigonometric multifold solution π/2-β=(68.1±0.7)° is excluded at the level of 7.3 standard deviations. The measurement resolves an ambiguity in the determination of the apex of the CKM Unitarity Triangle.
Published: 2018

20. Measurement of cos2β in B0→D(*)h0 with D→KS0π+π− decays by a combined time-dependent Dalitz plot analysis of BaBar and Belle data

Author: C. Bünger, T. Matsuda, J. W. Gary, T. S. Mattison, S. H. Kim, S. J. Sekula, A. Jawahery, P. Krokovny, M. Feindt, I. Adachi, D. B. MacFarlane, C. Hearty, P. Goldenzweig, K. H. Kang, K. Cho, S. Sandilya, A. G. Denig, R. F. Schwitters, M. Rozanska, D. Kotchetkov, E. Fioravanti, B. Golob, F. Palombo, T. Lueck, P. Pakhlov, J. B. Kim, K. Yu. Todyshevx, T. Leddig, D. Epifanov, N. K. Nisar, J. S. Lange, Z. C. Huard, V.N. Zhilich, Shih-Chang Lee, W. S. Lockman, M. R. Convery, D. N. Brown, A. Calcaterra, M. Z. Wang, K. Kinoshita, D. J. Summers, A. Filippi, H. Park, A. Bozek, Simon Akar, R. Prepost, R. Mussa, D. Gamba, M. Bellis, A. Ishikawa, F. De Mori, J. E. Fast, Cheng Chen, M. Starič, N. Tasneem, G.V. Russo, J. P. Coleman, F. Anulli, Alessandro Gaz, S. H. Robertson, Aidan Randle-Conde, W. S. Hou, G. J. King, Victoria Zhukova, F. F. Wilson, R. J. Sobie, L. Vitale, B. T. Meadows, P. Križan, G. Raven, Denis Bernard, S. Nishida, K. Miyabayashi, I. Badhrees, R. Ayad, James R. Wilson, V. Bhardwaj, R. Cowan, E. A. Kravchenko, Elisa Guido, J. L. Ritchie, Herbert Koch, T. K. Pedlar, A. P. Onuchin, A. Chen, S. Martellotti, F. Martinez-Vidal, Marco Bomben, M. D. Sokoloff, S. E. Vahsen, A. J. S. Smith, P. R. Burchat, R. Calabrese, C. Cartaro, M. Rotondo, V. Vorobyev, U. Mallik, I. Pavelkin, G. Schnell, D. Cinabro, K. Griessinger, M. Iwasaki, D. Matvienko, P. F. Harrison, G. Cibinetto, A. Oyanguren, E. Luppi, S. Emery, M. Merola, Peter S. Kim, T. S. Miyashita, N. Neri, G. Vasseur, E. Paoloni, D. Y. Kim, B. K. Pal, B. G. Cheon, K. T. Kim, L. M. Cremaldi, R. B. Garg, B. Bhuyan, A. V. Gritsan, Shigeki Hirose, K. T. Flood, A. M. Eisner, Y. Iwasaki, R. Godang, Tao Luo, K. Tanida, F. Di Lodovico, B. G. Fulsom, G. De Nardo, J. Chauveau, M. T. Hedges, A. B. Kaliyar, J. K. Ahn, Y. J. Kwon, G. Eigen, I. M. Nugent, V. E. Blinov, S. Bettarini, T. E. Browder, D. J. Payne, M. Ebert, A. J. Bevan, M. Röhrken, K. Chilikin, H. M. Lacker, Tara Nanut, T. Kuhr, T. A. Shibata, H. Miyata, T. Aushev, R. Sacco, A. J. Schwartz, E. Grauges, V. V. Zhulanov, G. Inguglia, O. Schneider, T. Uglov, V. Savinov, A. Palano, C. P. Jessop, S. M. Spanier, Alessandro Pilloni, J. Ocariz, R. Mizuk, Mario Giorgi, M. Heß, H. Kichimi, E. Won, M. K. Sullivan, Yu. G. Kolomensky, D. W. G. S. Leith, H. Atmacan, J. P. Lees, D. R. Peimer, H. Ono, D. G. Hitlin, Bingran Wang, S. Zakharov, Semen Eidelman, David Hutchcroft, L. Li Gioi, A. Zupanc, Wu S. L., K. Hayasaka, G. Calderini, E. Nakano, F. Simonetto, J. Va’vra, D. S. Chao, M. Davier, R. Cenci, R. Cheaib, R. Waldi, A. Zallo, S. Korpar, V. P. Druzhinin, C. Bozzi, G. Cowan, Noritaka Shimizu, J. M. LoSecco, M. V. Purohit, Douglas Wright, L. Zani, R. Gorodeisky, P. Patteri, M. Fritsch, D. A. Roberts, Yu. I. Skovpen, B. Dey, P. Ongmongkolkul, K. Honscheid, M. Piccolo, F. Forti, J. J. Walsh, R. Kroeger, M. E. Sevior, I. S. Lee, A. M. Lutz, R. J. Barlow, R. Stroili, M. T. Graham, A. Hafner, J. M. Roney, Z. Drásal, J. Albert, K. Senyo, E. M. T. Puccio, X. C. Lou, G. Batignani, V.E. Shebalin, Somnath Choudhury, N. Guttman, A. Kuzmin, J. G. Shiu, G. Wormser, K. K. Joo, Y. Unno, M. Posocco, J. G. Smith, S. Al Said, K. Inami, C. Z. Yuan, J. Cochran, E. Ben-Haim, C. Hast, M. Heck, D. J. Lange, G. Piredda, Hamad Ahmed, W. J. Wisniewski, G. Marchiori, S. Ogawa, G. D. Lafferty, Y. B. Li, H. A. Neal, V. Santoro, J. Libby, M. Lubej, W. Dunwoodie, A. M. Rossi, S. Passaggio, W. Panduro Vazquez, S. Uno, C. Schwanda, Tim Adye, V. B. Golubev, U. Tamponi, Y. Choi, K. J. Nath, G. Casarosa, L. Santelj, E. Waheed, R. D. Kass, A. Roodman, R. Faccini, F. Ferrarotto, A. J. Lankford, F. Le Diberder, S. Jia, R. M. Seddon, J. M. Izen, Crisostomo Sciacca, D. Aston, M. Nayak, M. Uchida, F. Ferroni, A. R. Buzykaev, G. Rizzo, M. Rama, L. Lanceri, So R. Y., A. Beaulieu, Y. Seino, J. A. McKenna, C. H. Cheng, T. J. Gershon, D. Liventsev, Y. Jin, C. H. Wang, S. Paul, Martino Margoni, S. Pardi, T. Müller, K. Sumisawa, D. M. Asner, T. E. Latham, M. Carpinelli, Ju-Young Kim, Maurizio Biasini, D. R. Muller, G. S. Varner, R. de Sangro, Stephen Robert Wagner, Y. Yusa, K. R. Schubert, A. K. Giri, Tamara Vazquez Schroeder, R. Itoh, C. L. Davis, Elisa Manoni, Li L. K., I. M. Peruzzi, Owen Rosser Long, M. Masuda, C. B. Van Hulse, G. B. Mohanty, J. A. Ernst, S. I. Serednyakov, F. Bianchi, L. Sun, S. Dittrich, P. K. Resmi, M. Gelb, Pu Wang, R. Kowalewski, Peter Kodys, A. Garmash, W. W. Jacobs, V. Bansal, G. R. Bonneaud, J. Dorfan, S. Di Carlo, G. Karyan, P. K. Behera, M. Verderi, N. Arnaud, A.E. Bondar, M. Takizawa, C. Touramanis, Z. Doležal, O. Grünberg, P. Taras, E. P. Solodov, O. Seon, Frank Simon, Y. Sakai, S. Prell, I. Garzia, V. Poireau, A. Soffer, A. Lusiani, N. Dash, E. Solovieva, Li Y. B., R. C. Field, G. Finocchiaro, M. S. Alam, S. Cunliffe, B. Oberhof, L. E. Piilonen, G. Pakhlova, R. Kulasiri, T. Hara, T. Julius, W. Gradl, T. Mori, H. Aihara, B. N. Ratcliff, S. Luitz, F. Tenchini, T. Sumiyoshi, Martin Ritter, Z. P. Zhang, T. Sanuki, B. G. Pushpawela, Jyoti Prakash Biswal, D. Bettoni, V. Gaur, M. Nakao, B. Echenard, Florian Urs Bernlochner, J. MacNaughton, C. Patrignani, V. Tisserand, M. Bračko, A. M. Bakich, Sw. Banerjee, G. Simi, D. Červenkov, E. Gabathuler, W. R. Innes, F. C. Porter, M. Chrzaszcz, and C. Voß
Subjects: Physics, Particle physics, Unitarity, Meson, 010308 nuclear & particles physics, Electron–positron annihilation, Hadron, Dalitz plot, 01 natural sciences, B-factory, KEKB, 0103 physical sciences, CP violation, 010306 general physics
Abstract: We report measurements of sin2β and cos2β using a time-dependent Dalitz plot analysis of B0→D(*)h0 with D→KS0π+π- decays, where the light unflavored and neutral hadron h0 is a π0, η, or ω meson. The analysis uses a combination of the final data sets of the BaBar and Belle experiments containing 471×106 and 772×106 BB¯ pairs collected at the ϒ(4S) resonance at the asymmetric-energy B factories PEP-II at SLAC and KEKB at KEK, respectively. We measure sin2β=0.80±0.14(stat)±0.06(syst)±0.03(model) and cos2β=0.91±0.22(stat)±0.09(syst)±0.07(model). The result for the direct measurement of the angle is β=(22.5±4.4(stat)±1.2(syst)±0.6(model))°. The last quoted uncertainties are due to the composition of the D0→KS0π+π- decay amplitude model, which is newly established by a Dalitz plot amplitude analysis of a high-statistics e+e-→cc¯ data sample as part of this analysis. We find the first evidence for cos2β>0 at the level of 3.7 standard deviations. The measurement excludes the trigonometric multifold solution π/2-β=(68.1±0.7)° at the level of 7.3 standard deviations and therefore resolves an ambiguity in the determination of the apex of the CKM Unitarity Triangle. The hypothesis of β=0° is ruled out at the level of 5.1 standard deviations, and thus CP violation is observed in B0→D(*)h0 decays. The measurement assumes no direct CP violation in B0→D(*)h0 decays.
Published: 2018

21. Measurement of the γγ→η′ transition form factor

Author: A. J S Smith, A. Randle-Conde, R. F. Schwitters, R. Cenci, R. de Sangro, M. K. Sullivan, Z. C. Huard, Gabriele Simi, J. R. Wilson, T. S. Miyashita, F. Le Diberder, C. H. Cheng, K. Yu Todyshev, V. E. Blinov, Marcin Chrzaszcz, M. Verderi, Eleonora Luppi, Yu. I. Skovpen, G. J. King, M. A. Giorgi, S. Passaggio, R. Faccini, J. M. Izen, Simon Akar, M. Bellis, T. Leddig, K. Honscheid, F. Forti, A. R. Buzykaev, C. Cartaro, D. J. Summers, A. M. Lutz, M. V. Purohit, F. Bianchi, J. W. Gary, P. Taras, A. Calcaterra, I. M. Nugent, R. Kowalewski, J. Dorfan, D. Gamba, D. J. Payne, X. C. Lou, N. Arnaud, J. P. Coleman, G. Eigen, M. Margoni, A. Soffer, R. Godang, E. Paoloni, M. Heß, D. S. Chao, G. Wormser, G. Batignani, M. R. Convery, D. B. Macfarlane, L. Lanceri, R. J. Sobie, A. Roodman, D. J. Lange, Alessandro Pilloni, D. R. Peimer, T. Schroeder, A. J. Lankford, D. Aston, W. Panduro Vazquez, Wu S. L., R. M. Seddon, E. P. Solodov, J. Chauveau, M. Posocco, S. Bettarini, R. Prepost, Y. B. Li, G. Piredda, F. Anulli, U. Mallik, M. Carpinelli, J. Va'Vra, E. Fioravanti, W. S. Lockman, Roland Waldi, So R. Y., L. Vitale, K. T. Flood, Ray Franklin Cowan, C. Chen, G. Raven, L. Zani, G. Vasseur, M. Piccolo, P. C. Kim, F. U. Bernlochner, T. Adye, J. M. Roney, S. M. Spanier, C. L. Davis, B. Echenard, M. Fritsch, K. Griessinger, G. Calderini, Alberto Lusiani, J. Ocariz, G. Casarosa, C. Hearty, Marcello Rotondo, S. Emery, M. T. Graham, B. Bhuyan, F. Simonetto, Timothy Gershon, R. Cheaib, Ju-Young Kim, M. Davier, A. Oyanguren, M. Bomben, Dominik Müller, F. Ferroni, Biplab Dey, W. J. Wisniewski, D. A. Roberts, F. Di Lodovico, Brian Meadows, E. Grauges, F. Martinez-Vidal, J. J. Walsh, Matteo Rama, A. V. Gritsan, D. Bernard, Fergus Wilson, A. G. Denig, B. N. Ratcliff, I. Garzia, James G. Smith, C. Sciacca, R. C. Field, H. Ahmed, C. Touramanis, D. N. Brown, S. Luitz, K. R. Schubert, S. I. Serednyakov, F. Palombo, V. Poireau, Thomas Latham, C. Patrignani, V. Tisserand, J. L. Ritchie, R. Calabrese, Nicola Neri, M. Biasini, T. Lueck, F. De Mori, J. M. Losecco, G. Marchiori, D. G. Hitlin, Elisa Manoni, F. C. Porter, Michael Sokoloff, J. Cochran, C. Bozzi, R. Gorodeisky, C. Hast, P. R. Burchat, G. A. Cowan, A. P. Onuchin, L. Sun, Sw. Banerjee, Yu. G. Kolomensky, P. Ongmongkolkul, E. Ben-Haim, J. A. Ernst, N. Tasneem, J. Albert, T. S. Mattison, N. Guttman, B. G. Fulsom, W. Gradl, Adrian John Bevan, F. Ferrarotto, E. M. T. Puccio, S. Dittrich, I. M. Peruzzi, M. Ebert, R. Stroili, A. Rossi, O. Long, C. Bünger, S. Martellotti, V. P. Druzhinin, D. M. Wright, G. De Nardo, H. M. Lacker, A. Jawahery, S. J. Sekula, G. Cibinetto, P. Patteri, W. Dunwoodie, M. S. Alam, H. Koch, E. A. Kozyrev, G. Finocchiaro, H. Neal, R. Kass, D. W G S Leith, A. Beaulieu, D. Bettoni, S. Prell, V. B. Golubev, B. G. Pushpawela, M. Röhrken, A. Gaz, R. Sacco, B. Oberhof, S. H. Robertson, A. Palano, E. A. Kravchenko, George Lafferty, C. P. Jessop, A. Filippi, G. Rizzo, A. Hafner, W. R. Innes, David Hutchcroft, Oliver Grünberg, G. R. Bonneaud, A. Zallo, C. Voß, J. A. McKenna, S. R. Wagner, E. Gabathuler, P. F. Harrison, A. M. Eisner, Roger Barlow, J. P. Lees, V. Santoro, and L. Cremaldi
Subjects: Physics, Range (particle radiation), 010308 nuclear & particles physics, Electron–positron annihilation, Form factor (quantum field theory), 01 natural sciences, 7. Clean energy, Measure (mathematics), law.invention, Luminosity, Nuclear physics, law, 0103 physical sciences, 010306 general physics, Collider
Abstract: We study the process e^+e^− → e^+e^−η′ in the double-tag mode and measure for the first time the γ⋆γ⋆ → η′ transition form factor F_η′(Q^2_1,Q^2_2) in the momentum-transfer range 2 < Q^2_1, Q^2_2 < 60 GeV^2. The analysis is based on a data sample corresponding to an integrated luminosity of around 469 fb^(-1) collected at the PEP-II e^+e^− collider with the BABAR detector at center-of-mass energies near 10.6 GeV.
Published: 2018

22. An APD for the efficient detection of the fast scintillation component of BaF2

Author: Michael E. Hoenk, J.H. Kim, J. Trevor, Mickel McClish, April D. Jewell, D. G. Hitlin, Richard A. Farrell, and John Hennessy
Subjects: Physics, Nuclear and High Energy Physics, Scintillation, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, business.industry, Barium fluoride, Photodetector, 01 natural sciences, Calorimeter, 010309 optics, chemistry.chemical_compound, Optics, chemistry, 0103 physical sciences, Mu2e, High Energy Physics::Experiment, Quantum efficiency, Fermilab, business, Instrumentation, Energy (signal processing)
Abstract: Barium fluoride crystals are the baseline choice for the calorimeter of the Mu2e experiment at Fermilab. By the fast (decay time 0.9 ns) 220 nm scintillation component and discriminating against the larger slow (decay time 630 ns) 300 nm component, it is possible to build a radiation-hard calorimeter with good energy and time resolution and high rate capability. This requires a solid state photosensor with high quantum efficiency at 220 nm, discrimination against the 300 nm component and good rise and decay times. Progress on the development of such a sensor is presented.
Published: 2016
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23. The tracker and calorimeter systems of the Mu2e experiment

Author: D. G. Hitlin
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Calorimeter (particle physics), Physics::Instrumentation and Detectors, Mu2e, High Energy Physics::Phenomenology, High Energy Physics::Experiment, Fermilab, Tracking (particle physics), Lepton
Abstract: The Mu2e experiment at Fermilab is a sensitive search for lepton flavor violation via muon-to-electron conversion in the field of an aluminum nucleus. The requirements for the tracking and calorimeter systems of the experiment, as well as the design of systems that fulfill these requirements, are briefly described.
Published: 2016
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24. Characterization of a 5 <tex-math notation='LaTeX'>$5 \times 5$</tex-math> LYSO Matrix Calorimeter Prototype

Author: V. Tereshchenko, M. Cordelli, V. V. Glagolev, G. Tassielli, P. Ott, E. Dané, D. G. Hitlin, G. Corradi, S. Miscettti, M. Martini, S. Giovannella, Yu.I. Davydov, S.R. Soleti, A. Saputi, V. A. Baranov, Luca Morescalchi, F. Happacher, Gianantonio Pezzullo, N. Atanov, T. S. Miyashita, Andy Thomas, K. T. Flood, I. Sarra, and F. Colao
Subjects: Physics, Nuclear and High Energy Physics, Photon, 010308 nuclear & particles physics, Resolution (electron density), Electron, Characterization (mathematics), 01 natural sciences, Lyso, Calorimeter, Nuclear physics, Matrix (mathematics), Nuclear Energy and Engineering, 0103 physical sciences, Electrical and Electronic Engineering, Atomic physics, 010306 general physics, Energy (signal processing)
Abstract: In this paper, we present measurements of the energy and the time resolution of the Lutetium–Yttrium Oxyorthosilicate (LYSO) calorimeter prototype for the Mu2e experiment. The prototype calorimeter matrix consisted of 25, $\hbox{3}\,\hbox{$\times$}\, \hbox{3}\,\hbox{$\times$}\, \hbox{130\ mm}^3$ , LYSO crystals readout by $10\ \times 10\ \hbox{mm}^2$ Hamamatsu APDs. The prototype has been tested both with the tagged photon beam at MAMI, Mainz, Germany, and with the ${e^ -}$ beam of BTF, Frascati. The energy of particles used ranges between 61.3 and 187.1 MeV (80–130 MeV) for photon (electron) beams. While the MAMI data shows a negligible beam energy spread, we observe a 3%–5% contribution related to the beam in BTF sample. After correcting this effect, we obtain a global energy dependence of the energy resolution described by the formula ${\sigma _{E}}/{{E}_{{\rm {dep}}}}= {a}/\sqrt {{{E}_{{\rm {dep}}}}/{\hbox{GeV}}} \oplus {b}$ , with ${a} = ({0.59} \pm {0.12})\%$ and ${b} = ({3.63} \pm {0.21})\% $ . The simulation is in good agreement with data if we add an additional contribution due to the intrinsic LYSO fluctuation of 2.6%. We present also the measurements of the time resolution. The measurements have been performed using the ${e^ -}$ beam BTF in the energy range from 100 to 400 MeV. A resolution of ( ${161} \pm {3}$ ) ps at 100 MeV has been achieved. The energy dependence of the resolution has been fitted with following parametrization: ${\sigma _{\rm t}}{\rm (E)} = {a}/\sqrt {{E}/{\hbox{GeV}}} \oplus {b}$ , where the stochastic term and the constant term are determined to be ${a} = ({50} \pm {1})$ ps and ${b} = ({40} \pm {3})$ ps, respectively.
Published: 2016

25. Construction status of the Mu2e crystal calorimeter

Author: R. Donghia, V. Tereshchenko, D. Pasciuto, J. Budagov, M. Cordelli, S. Donati, F. Grancagnolo, I. Sarra, Claudio Ferrari, F. Spinella, Dariush Hampai, C. Bloise, E. Diociaiuti, Gianantonio Pezzullo, N. Atanov, A. Saputi, T. S. Miyashita, S. Miscetti, F. Cervelli, G. Tassielli, I. I. Vasilyev, Anna Zanetti, Z. Usubov, Ren-Yuan Zhu, E. Pedreschi, S. Di Falco, D. G. Hitlin, V. V. Glagolev, Luca Morescalchi, M. Corradi, P. Murat, M. Martini, F. C. Porter, V. A. Baranov, F. Colao, B. Echenard, S. Giovannella, Yu.I. Davydov, F. Happacher, F. Raffaelli, A. Marini, Atanov, N., Baranov, V., Bloise, C., Budagov, J., Cervelli, F., Colao, F., Cordelli, M., Corradi, M., Davydov, Y. I., Falco, S. D., Diociaiuti, E., Donati, S., Donghia, R., Echenard, B., Ferrari, C., Giovannella, S., Glagolev, V., Grancagnolo, F., Hampai, D., Happacher, F., Hitlin, D., Marini, A., Martini, M., Miscetti, S., Miyashita, T., Morescalchi, L., Murat, P., Pasciuto, D., Pedreschi, E., Pezzullo, G., Porter, F., Raffaelli, F., Saputi, A., Sarra, I., Spinella, F., Tassielli, G. F., Tereshchenko, V., Usubov, Z., Vasilyev, I. I., Zanetti, A., and Zhu, R. Y.
Subjects: Materials science, Muon, Calorimeter (particle physics), Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, business.industry, Detector, Cosmic ray, 01 natural sciences, Particle identification, 030218 nuclear medicine & medical imaging, 03 medical and health sciences, 0302 clinical medicine, Optics, 0103 physical sciences, Mu2e, Cathode ray, High Energy Physics::Experiment, Fermilab, business, Instrumentation, Mathematical Physics
Abstract: The Mu2e experiment at Fermilab will search for the charged-lepton flavor violating neutrino-less conversion of a negative muon into an electron in the field of an aluminum nucleus. The Mu2e detector is composed of a tracker, an electromagnetic calorimeter and an external veto for cosmic rays. The calorimeter plays an important role in providing excellent particle identification capabilities and a fast online trigger filter, while aiding the track reconstruction capabilities. Calorimeter requirements are to provide a large acceptance for 0∼10 MeV electrons and reach: I) a time resolution better than 0.5 ns; ii) an energy resolution better than 10%; and iii) a position resolution of 1 cm. The calorimeter consists of two disks, each one made of 674 pure CsI crystals. Each crystal is readout by two large area 2×3 arrays of UV-extended SiPMs of 6×6 mm2 dimensions. A large scale prototype (Module-0) has been tested at an electron beam. We report here the tests done to finalize the calorimeter design, the results obtained with Module-0 and the status of production. At this time, the performance characteristics of 85% of the crystals and all of the SiPMs have been measured. The calorimeter engineering drawings have been completed and the large mechanical components are under fabrication. Analog and digital electronics have been prototyped and tested with irradiation dose. Their serial production is being organized. The calorimeter assembly phase is planned for mid-2020.
Published: 2020

26. Design and status of the Mu2e crystal calorimeter

Author: Claudio Ferrari, G. Tassielli, S. Ceravolo, S. Donati, Gianantonio Pezzullo, Dariush Hampai, C. Bloise, Anna Zanetti, F. Spinella, R. Donghia, G. Corradi, V. Tereshchenko, S. Giovannella, Yu.I. Davydov, M. Cordelli, D. Pasciuto, F. Cervelli, I. Sarra, F. Colao, N. Atanov, F. Grancagnolo, E. Pedreschi, B. Echenard, S. Miscetti, P. Murat, D. G. Hitlin, F. C. Porter, V. A. Baranov, T. S. Miyashita, F. Happacher, M. Martini, F. Raffaelli, Ren-Yuan Zhu, V. Glagolev, I. I. Vasilyev, Luca Morescalchi, E. Diociaiuti, A. Saputi, S. Di Falco, J. Budagov, Z. Usubov, Atanov, N., Baranov, V., Bloise, C., Budagov, J., Cervelli, F., Ceravolo, S., Colao, F., Cordelli, M., Corradi, G., Davydov, Y. I., Di Falco, S., Diociaiuti, E., Donati, S., Donghia, R., Echenard, B., Ferrari, C., Giovannella, S., Glagolev, V., Grancagnolo, F., Hampai, D., Happacher, F., Hitlin, D., Martini, M., Miscetti, S., Miyashita, T., Morescalchi, L., Murat, P., Pasciuto, D., Pedreschi, E., Pezzullo, G., Porter, F., Raffaelli, F., Saputi, A., Sarra, I., Spinella, F., Tassielli, G., Tereshchenko, V., Usubov, Z., Vasilyev, I. I., Zanetti, A., and Zhu, R. Y.
Subjects: Nuclear and High Energy Physics, Physics::Instrumentation and Detectors, Orders of magnitude (temperature), SiPMs, Calorimetry, 7. Clean energy, 01 natural sciences, Particle identification, 030218 nuclear medicine & medical imaging, Mu2e, Pure CsI crystals, 03 medical and health sciences, 0302 clinical medicine, Silicon photomultiplier, Optics, 0103 physical sciences, Fermilab, Instrumentation, Pure CsI crystal, Physics, Muon, Calorimeter (particle physics), 010308 nuclear & particles physics, business.industry, Detector, High Energy Physics::Experiment, business
Abstract: The Mu2e experiment at Fermilab searches for the coherent neutrino-less muon to electron conversion in the Coulomb field of an aluminum nucleus. This charged-lepton flavor violating process is characterized by a distinctive signature of a mono-energetic electron ( ∼ 105 MeV/c) and its observation will be a clear signature of new physics beyond the Standard Model. The Mu2e goal is to improve by four orders of magnitude the search sensitivity with respect to the previous experiments. The Mu2e detector is composed of a tracker, an electromagnetic calorimeter and an external veto for cosmic rays. The calorimeter plays an important role in providing excellent particle identification capabilities, a fast online trigger filter while aiding the track reconstruction capabilities. It consists of 1348 pure CsI crystals divided in two annular disks, each one readout by two large area Silicon Photomultipliers. A large scale prototype has been tested with an electron beam , demonstrating to largely satisfy the Mu2e requirements. At the moment of writing, the crystals and SiPMs production phase is halfway through the completion. An overview of the characterization tests is reported, together with a description of the final mechanical and electronical design.
Published: 2020

27. Search for the decay mode B0→ppp¯p¯

Author: C. Hearty, M. Rotondo, A. J. Bevan, E. Gabathuler, F. C. Porter, Tisserand, J. G. Smith, V. B. Golubev, F. Di Lodovico, Cheng Chen, B. G. Pushpawela, D. J. Payne, A. V. Gritsan, A. M. Lutz, W. S. Lockman, S. Prell, I. Garzia, E. Luppi, D. Bettoni, Sokoloff, M. Piccolo, T. S. Mattison, D. N. Brown, Wagner, C. H. Cheng, R. Calabrese, W. Gradl, M. Röhrken, Z. C. Huard, E. Grauges, U. Mallik, G. Eigen, E. Fioravanti, T. S. Miyashita, J. A. McKenna, C. Touramanis, A. Palano, K. Y. Todyshev, B. Echenard, C. Patrignani, A. Calcaterra, Tamara Vazquez Schroeder, K. T. Flood, Owen Rosser Long, R. Y. So, V. E. Blinov, A. G. Denig, J. P. Lees, R. Sacco, R. de Sangro, H. M. Lacker, D. G. Hitlin, L. Sun, J. P. Coleman, J. Cochran, Douglas Wright, D. J. Lange, David Hutchcroft, W. Panduro Vazquez, Ju-Young Kim, G. Finocchiaro, Y. I. Skovpen, P. Patteri, G. Wormser, E. P. Solodov, E. A. Kravchenko, A. R. Buzykaev, A. J. Lankford, B. T. Meadows, S. Martellotti, F. Le Diberder, A. M. Eisner, Y. B. Li, C. L. Davis, E. A. Kozyrev, Santoro, A. Zallo, Herbert Koch, A. P. Onuchin, G. Cibinetto, M. Fritsch, D. S. Chao, V. P. Druzhinin, C. Bozzi, G. Cowan, P. Ongmongkolkul, M. Davier, K. Griessinger, S. Banerjee, Poireau, S. Passaggio, Denis Bernard, B. Bhuyan, J. W. Gary, M. Verderi, N. Arnaud, I. M. Peruzzi, S. I. Serednyakov, and Y. G. Kolomensky
Subjects: Physics, Particle physics, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, Detector, 01 natural sciences, Standard deviation, law.invention, Distribution (mathematics), law, 0103 physical sciences, 010306 general physics, Collider, Energy (signal processing), Bar (unit)
Abstract: A search is presented for the four-body decay B0→ppp¯p¯ in a sample of 471 million BB¯ pairs collected with the BABAR detector, operated at the SLAC PEP-II asymmetric-energy e+e- collider. The center-of-mass energy is 10.58 GeV. From a fit to the distribution of the energy-substituted mass mES, the branching fraction B(B0→ppp¯p¯)=(1.1±0.5±0.2)×10-7 is extracted, where the first uncertainty is statistical and the second is systematic. The significance of the signal, including the systematic uncertainty, is 2.9 standard deviations. The upper limit on the branching fraction is determined to be 2.0×10-7 at 90% confidence level.
Published: 2018

28. Measurement of the spectral function for the τ−→K−KSντ decay

Author: G. J. King, D. B. Macfarlane, B. Bhuyan, J. Dorfan, Z. C. Huard, J. M. Izen, E. Grauges, M. Bellis, F. Martinez-Vidal, J. J. Walsh, V. B. Golubev, M. Röhrken, George Lafferty, C. P. Jessop, V. E. Blinov, Matteo Rama, A. V. Gritsan, A. Palano, James G. Smith, H. Neal, R. Kass, P. Ongmongkolkul, A. Hafner, W. R. Innes, David Hutchcroft, D. W G S Leith, D. Gamba, A. Beaulieu, J. Va'Vra, Oliver Grünberg, G. R. Bonneaud, W. S. Lockman, L. Lanceri, J. A. McKenna, S. R. Wagner, A. Calcaterra, B. Echenard, C. H. Cheng, R. M. Seddon, E. Fioravanti, A. G. Denig, B. N. Ratcliff, C. Bünger, M. Davier, V. P. Druzhinin, Ray Franklin Cowan, S. M. Spanier, A. Oyanguren, K. Griessinger, C. L. Davis, R. F. Schwitters, A. J S Smith, P. C. Kim, M. Posocco, K. T. Flood, R. Cheaib, A. Jawahery, N. Guttman, R. Stroili, M. Fritsch, F. U. Bernlochner, G. Cibinetto, J. Ocariz, M. T. Graham, D. M. Wright, M. S. Alam, Brian Meadows, Roland Waldi, So R. Y., F. De Mori, J. P. Lees, E. A. Kozyrev, W. J. Wisniewski, F. Ferroni, R. Gorodeisky, G. Vasseur, G. Wormser, F. Le Diberder, K. Yu Todyshev, B. G. Fulsom, C. Bozzi, Gabriele Simi, J. P. Coleman, R. Cenci, Ju-Young Kim, M. Bomben, F. Forti, R. Sacco, M. Margoni, C. Voß, Marcin Chrzaszcz, B. Oberhof, J. Cochran, A. M. Lutz, A. Zallo, Dominik Müller, T. Schroeder, A. J. Lankford, Yu. G. Kolomensky, G. Piredda, V. Santoro, U. Mallik, G. Batignani, M. Biasini, D. N. Brown, Y. B. Li, Michael Sokoloff, F. Ferrarotto, E. M. T. Puccio, M. Carpinelli, R. Godang, C. Sciacca, R. C. Field, H. Ahmed, T. Leddig, E. A. Kravchenko, D. J. Lange, R. Prepost, G. Casarosa, M. Ebert, P. R. Burchat, J. A. Ernst, L. Zani, A. Rossi, G. A. Cowan, S. Emery, Eleonora Luppi, C. Hearty, Marcello Rotondo, T. Adye, L. Vitale, X. C. Lou, S. Dittrich, J. L. Ritchie, O. Long, Wu S. L., D. Bernard, G. Eigen, A. Filippi, D. J. Summers, G. Rizzo, S. I. Serednyakov, F. Palombo, G. Calderini, A. Soffer, D. S. Chao, S. Martellotti, G. De Nardo, Alberto Lusiani, Nicola Neri, H. M. Lacker, C. Chen, Biplab Dey, N. Tasneem, J. Albert, Fergus Wilson, S. J. Sekula, C. Cartaro, I. M. Peruzzi, D. J. Payne, E. Ben-Haim, E. Paoloni, R. de Sangro, P. Patteri, Yu. I. Skovpen, K. Honscheid, J. W. Gary, P. Taras, M. Heß, R. Kowalewski, M. R. Convery, N. Arnaud, T. Lueck, D. G. Hitlin, J. Chauveau, C. Hast, Simon Akar, A. R. Buzykaev, H. Koch, S. Bettarini, G. Raven, G. Finocchiaro, M. Piccolo, F. Simonetto, C. Touramanis, S. Luitz, K. R. Schubert, R. J. Sobie, A. Roodman, W. Dunwoodie, T. S. Mattison, A. Randle-Conde, W. Gradl, M. K. Sullivan, M. Verderi, R. Faccini, V. Poireau, M. A. Giorgi, J. M. Losecco, G. Marchiori, F. C. Porter, F. Bianchi, I. M. Nugent, R. Calabrese, F. Di Lodovico, E. P. Solodov, Elisa Manoni, Sw. Banerjee, A. P. Onuchin, L. Sun, Adrian John Bevan, Alessandro Pilloni, I. Garzia, S. Passaggio, D. R. Peimer, Thomas Latham, C. Patrignani, V. Tisserand, D. Aston, F. Anulli, D. Bettoni, J. M. Roney, S. Prell, W. Panduro Vazquez, B. G. Pushpawela, A. Gaz, S. H. Robertson, M. V. Purohit, Timothy Gershon, D. A. Roberts, E. Gabathuler, P. F. Harrison, A. M. Eisner, L. Cremaldi, Roger Barlow, J. R. Wilson, and T. S. Miyashita
Subjects: S system, Physics, 010308 nuclear & particles physics, Branching fraction, Detector, 01 natural sciences, law.invention, Nuclear physics, law, 0103 physical sciences, Mass spectrum, Spectral function, 010306 general physics, Collider, Energy (signal processing)
Abstract: The decay τ^− → K^−K_Sν_τ has been studied using 430×10^6 e^+e^− → τ^+τ^− events produced at a center-of-mass energy around 10.6 GeV at the PEP-II collider and studied with the BABAR detector. The mass spectrum of the K^−K_S system has been measured and the spectral function has been obtained. The measured branching fraction B(τ^− → K^−K_Sν_τ) = (0.739 ± 0.011(stat) ± 0.020(syst)) × 10^(-3) is found to be in agreement with earlier measurements.
Published: 2018

29. Advanced imaging capabilities by incorporating plasmonics and metamaterials in detectors

Author: Michael E. Hoenk, D. G. Hitlin, Alexander G. Carver, Ahmed M. Morsy, April D. Jewell, Michelle L. Povinelli, L. Douglas Bell, Todd J. Jones, Shouleh Nikzad, John Hennessy, Mickel McClish, George, Thomas, Dutta, Achyut K., and Islam, M. Saif
Subjects: Admittance, Materials science, business.industry, Detector, Metamaterial, medicine.disease_cause, Photodiode, law.invention, Band-pass filter, law, Filter (video), medicine, Optoelectronics, business, Plasmon, Ultraviolet
Abstract: Ultraviolet detection is often required to be made in the presence of a strong background of solar radiation which needs to be suppressed, but materials limitations at these wavelengths can impact both filter and sensor performance. In this work, we explore the use of 1D photonic bandgap structures integrated directly onto a Si sensor that can operate with solar blindness. These filters take advantage of the improved admittance with silicon to significantly improve throughput over conventional stand-alone bandpass filter elements. At far ultraviolet wavelengths these filters require the use of non-absorbing dielectrics such as the metal fluoride materials of MgF_2, AlF_3 and LiF. The latest performance of these 1D multilayer filters on Si photodiodes and CCD imaging sensors is demonstrated. We have also extended these 1D structures to more complex multilayers guided by the design concepts of metamaterials and metatronics, and to 2D patterned plasmonic hole array filters fabricated in aluminum. The performance of sensors and test filter structures is presented with an emphasis on UV throughput.
Published: 2018

30. The Mu2e Calorimeter Final Technical Design Report

Author: G. Tassielli, S. Ceravolo, G. Corradi, M. Martini, Tommaso Radicioni, I. Sarra, P. Murat, Ren-Yuan Zhu, K. T. Flood, F. C. Porter, V. A. Baranov, R. Donghia, V. Tereshchenko, S. Miscetti, F. Grancagnolo, E. Dané, F. Spinella, M. Cordelli, Z. Usubov, D. G. Hitlin, N. Atanov, E. Diociaiuti, T. S. Miyashita, S. Giovannella, V. Glagolev, F. Raffaelli, D. Pasciuto, S. Donati, Y. I. Davydov, Gianantonio Pezzullo, F. Colao, B. Echenard, M. Ricci, F. Happacher, Luca Morescalchi, A. Saputi, S. Di Falco, J. Budagov, D. Tagnani, and F. Cervelli
Subjects: Calorimeter (particle physics), APDS, Computer science, business.industry, Electrical engineering, Avalanche photodiode, Technical design, law.invention, Silicon photomultiplier, Backup, law, Mu2e, Fermilab, business
Abstract: Since the first version of the Mu2e TDR released at the beginning of 2015, the Mu2e Calorimeter system has undergone a long list of changes to arrive to its final design. These changes were primarily caused by two reasons: (i) the technology choice between the TDR proposed solution of BaF2 crystals readout with solar blind Avalanche Photodiodes (APDs) and the backup option of CsI crystals readout with Silicon Photomultipliers (SiPM) has been completed and (ii) the channels numbering, the mechanical system and the readout electronics were substantially modified while proceeding with engineering towards the final project. This document updates the description of the calorimeter system adding the most recent engineering drawings and tecnical progresses.
Published: 2018

31. Expression of Interest for Evolution of the Mu2e Experiment

Author: R. Bonventre, G. Lukicov, R. Culbertson, P. Q. Hung, Brian Pollack, R. Tschirhart, A. Lucà, S. Giovannella, A. Mazzacane, Michael Schmitt, S. Donati, L. Xia, S. Boi, Y. Wang, K. S. Khaw, P. Murat, F. C. Porter, V. Lombardo, S. Mueller, Z. Usubov, Mayda Velasco, J. Whitmore, Gianantonio Pezzullo, B. Kiburg, Y. Oksuzian, J. P. Miller, Rashid M. Djilkibaev, M. Röhrken, David Neuffer, V. Giusti, J. Bono, R. Hooper, L. Harkness-Brennan, P. Fabbricatore, C. Gatto, G. Drake, D. Ambrose, M. Jones, M. Jenkins, Manolis Kargiantoulakis, J. F. Caron, S. Denisov, K. Heller, G. Horton-Smith, D. Glenzinski, F. Abusalma, S. Demers, C. Bloise, Dmitri Denisov, R. Coleman, K. L. Byrum, Ren-Yuan Zhu, A. Gaponenko, Markus Frank, Y. I. Davydov, Aji Daniel, R. Ciolini, V. Evdokimov, S. Miscetti, B. Echenard, D. Pasciuto, E. Diociaiuti, R. Zwaska, Steven Werkema, A. Artikov, D. Cronin-Hennessy, V. Zutshi, M. Ricci, D. Lin, Henry Glass, Richard L. Talaga, M. A. Cummings, Vitaly Pronskikh, A. Popov, P. Winter, D. Stratakis, Anna Pla-Dalmau, A. Edmonds, James L. Popp, N. H. Tran, L. Goodenough, E. Pedreschi, Luca Morescalchi, G. C. Blazey, D. G. Hitlin, John Quirk, D. Chokheli, F. Spinella, E. Prebys, K. R. Lynch, D. Pushka, A. Saputi, J. Mott, V. Nagaslaev, F. Happacher, S. Di Falco, M. Campbell, F. Cervelli, D. N. Brown, R. H. Bernstein, C. Hu, D. Hedin, Robert K. Kutschke, A. Hocker, J. Kozminski, M. Martini, A. Ferrari, R. Ehrlich, Thomas Strauss, Yu.G. Kolomensky, T. A. Bolton, I. Logashenko, Ed V. Hungerford, R. L. Wagner, D. Bowring, Z. Giorgio, E. C. Dukes, R. Donghia, K. Ciampa, V. Tereshchenko, L. Zhang, V. Rusu, M. Lancaster, Gregory Rakness, R. E. Ray, and I. Sarra
Subjects: Particle physics, Upgrade, Leverage (negotiation), Physics::Instrumentation and Detectors, Computer science, Mu2e, Detector, Physics::Accelerator Physics, High Energy Physics::Experiment, Fermilab, Sensitivity (control systems), Order of magnitude, Lepton
Abstract: We propose an evolution of the Mu2e experiment, called Mu2e-II, that would leverage advances in detector technology and utilize the increased proton intensity provided by the Fermilab PIP-II upgrade to improve the sensitivity for neutrinoless muon-to-electron conversion by one order of magnitude beyond the Mu2e experiment, providing the deepest probe of charged lepton flavor violation in the foreseeable future. Mu2e-II will use as much of the Mu2e infrastructure as possible, providing, where required, improvements to the Mu2e apparatus to accommodate the increased beam intensity and cope with the accompanying increase in backgrounds.
Published: 2018

32. The Mu2e undoped CsI crystal calorimeter

Author: Gianantonio Pezzullo, F. Happacher, A. Saputi, M. Cordelli, G. F. Tassielli, S. Donati, E. Pedreschi, F. Colao, F. Spinella, G. Corradi, T. S. Miyashita, V. Glagolev, Luca Morescalchi, F. Grancagnolo, Marco Martini, V. Tereshchenko, D. G. Hitlin, Z. Usubov, Frank C. Porter, R. Donghia, P. Murat, Yu.I. Davydov, S. Giovannella, E. Diociaiuti, I. Sarra, Bertrand Echenard, J. Budagov, F. Cervelli, M. Ricci, S. Miscetti, V. Baranov, F. Raffaelli, Ren-Yuan Zhu, S. Di Falco, N. Atanov, Atanov, N., Baranov, V., Budagov, J., Cervelli, F., Colao, F., Cordelli, M., Corradi, G., Davydov, Y. I., Falco, S. Di, Diociaiuti, E., Donati, S., Donghia, R., Echenard, B., Giovannella, S., Glagolev, V., Grancagnolo, F., Happacher, F., Hitlin, D. G., Martini, M., Miscetti, S., Miyashita, T., Morescalchi, L., Murat, P., Pedreschi, E., Pezzullo, G., Porter, F., Raffaelli, F., Ricci, M., Saputi, A., Sarra, I., Spinella, F., Tassielli, G., Tereshchenko, V., Usubov, Z., and Zhu, R. Y.
Subjects: Physics - Instrumentation and Detectors, Physics::Instrumentation and Detectors, Performance of High Energy Physics Detector, FOS: Physical sciences, Solenoid, 01 natural sciences, 7. Clean energy, Particle identification, Silicon photomultiplier, Optics, 0103 physical sciences, Mu2e, Fermilab, 010306 general physics, Instrumentation, Mathematical Physics, Physics, Calorimeter, Muon, Calorimeter (particle physics), 010308 nuclear & particles physics, business.industry, Detector, Instrumentation and Detectors (physics.ins-det), High Energy Physics::Experiment, business
Abstract: The Mu2e experiment at Fermilab will search for Charged Lepton Flavor Violating conversion of a muon to an electron in an atomic field. The Mu2e detector is composed of a tracker, an electromagnetic calorimeter and an external system, surrounding the solenoid, to veto cosmic rays. The calorimeter plays an important role to provide: a) excellent particle identification capabilities; b) a fast trigger filter; c) an easier tracker track reconstruction. Two disks, located downstream of the tracker, contain 674 pure CsI crystals each. Each crystal is read out by two arrays of UV-extended SiPMs. The choice of the crystals and SiPMs has been finalized after a thorough test campaign. A first small scale prototype consisting of 51 crystals and 102 SiPM arrays has been exposed to an electron beam at the BTF (Beam Test Facility) in Frascati. Although the readout electronics were not the final, results show that the current design is able to meet the timing and energy resolution required by the Mu2e experiment., Comment: 6 pages, 8 figures, proceedings of the "Calorimetry for the high energy frontier (CHEF17)" conference, 2-6 October 2017, Lyon, France
Published: 2018
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33. Quality Assurance on a custom SiPMs array for the Mu2e experiment

Author: Luca Morescalchi, F. Grancagnolo, V. Baranov, S. Miscetti, E. Diociaiuti, Gianantonio Pezzullo, D. G. Hitlin, Z. Usubov, F. Raffaelli, Frank C. Porter, F. Cervelli, F. Colao, G. Corradi, T. S. Miyashita, J. Budagov, S. Di Falco, S. Giovannella, V. Glagolev, F. Spinella, N. Atanov, Marco Martini, A. Saputi, Bertrand Echenard, P. Murat, M. Ricci, Yu.I. Davydov, Ren-Yuan Zhu, S. Donati, V. Tereshchenko, E. Pedreschi, I. Sarra, R. Donghia, M. Cordelli, G. F. Tassielli, F. Happacher, Atanov, N., Baranov, V., Budagov, J., Davydov, Y. I., Glagolev, V., Tereshchenko, V., Usubov, Z., Cervelli, F., Falco, S. D., Donati, S., Morescalchi, L., Pedreschi, E., Pezzullo, G., Raffaelli, F., Spinella, F., Colao, F., Cordelli, M., Corradi, G., Diociaiuti, E., Donghia, R., Giovannella, S., Happacher, F., Martini, M., Miscetti, S., Ricci, M., Saputi, A., Sarra, I., Echenard, B., Hitlin, D. G., Miyashita, T., Porter, F., Zhu, R. Y., Grancagnolo, F., Tassielli, G., and Murat, P.
Subjects: Physics - Instrumentation and Detectors, Physics::Instrumentation and Detectors, Radiation effect, FOS: Physical sciences, 7. Clean energy, 01 natural sciences, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), Silicon photomultiplier, Optics, Mu2e, Fermilab, Physics, business.industry, 010401 analytical chemistry, Detector, Instrumentation and Detectors (physics.ins-det), 0104 chemical sciences, Calorimeter, 010404 medicinal & biomolecular chemistry, High energy physics instrumentation, Silicon radiation detectors, Nuclear physic, High Energy Physics::Experiment, business, Quality assurance, Dark current, Voltage
Abstract: The Mu2e experiment at Fermilab will search for the coherent $\mu \to e$ conversion on aluminum atoms. The detector system consists of a straw tube tracker and a crystal calorimeter. A pre-production of 150 Silicon Photomultiplier arrays for the Mu2e calorimeter has been procured. A detailed quality assur- ance has been carried out on each SiPM for the determination of its own operation voltage, gain, dark current and PDE. The measurement of the mean-time-to-failure for a small random sample of the pro-production group has been also completed as well as the determination of the dark current increase as a function of the ioninizing and non-ioninizing dose., Comment: 4 pages, 10 figures, conference proceeding for NSS-MIC 2017
Published: 2018

34. Design and status of the Mu2e crystal calorimeter

Author: Z. Usubov, G. Corradi, V. Glagolev, M. Ricci, R. Donghia, E. Pedreschi, T. S. Miyashita, S. Miscetti, F. Raffaelli, E. Diociaiuti, A. Saputi, M. Cordelli, G. F. Tassielli, Frank C. Porter, Luca Morescalchi, V. Baranov, F. Grancagnolo, S. Donati, S. Di Falco, Marco Martini, N. Atanov, J. Budagov, Ren-Yuan Zhu, D. G. Hitlin, S. Giovannella, V. Tereshchenko, Gianantonio Pezzullo, F. Spinella, F. Cervelli, I. Sarra, P. Murat, F. Happacher, Yu.I. Davydov, F. Colao, B. Echenard, Atanov, N., Baranov, V., Budagov, J., Davydov, Yu. I., Glagolev, V., Tereshchenko, V., Usubov, Z., Cervelli, F., Di Falco, S., Donati, S., Morescalchi, L., Pedreschi, E., Pezzullo, G., Raffaelli, F., Spinella, F., Colao, F., Cordelli, M., Corradi, G., Diociaiuti, E., Donghia, R., Giovannella, S., Happacher, F., Martini, M., Miscetti, S., Ricci, M., Saputi, A., Sarra, I., Echenard, B., Hitlin, D. G., Miyashita, T., Porter, F., Zhu, R. Y., Grancagnolo, F., Tassielli, G., and Murat, P.
Subjects: Nuclear and High Energy Physics, Physics - Instrumentation and Detectors, Physics::Instrumentation and Detectors, FOS: Physical sciences, Solenoid, Electron, 7. Clean energy, 01 natural sciences, Particle identification, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Silicon photomultiplier, Crystal, 0103 physical sciences, Mu2e, Fermilab, Energy resolution, Electrical and Electronic Engineering, 010306 general physics, Nuclear and High Energy Physic, Physics, Muon, Calorimeter (particle physics), 010308 nuclear & particles physics, Detector, Instrumentation and Detectors (physics.ins-det), Meson, Cosmic ray, Nuclear Energy and Engineering, High Energy Physics::Experiment, Aluminum
Abstract: The Mu2e experiment at Fermilab searches for the charged-lepton flavour violating (CLFV) conversion of a negative muon into an electron in the field of an aluminum nucleus, with a distinctive signature of a mono-energetic electron of energy slightly below the muon rest mass (104.967 MeV). The Mu2e goal is to improve by four orders of magnitude the search sensitivity with respect to the previous experiments. Any observation of a CLFV signal will be a clear indication of new physics. The Mu2e detector is composed of a tracker, an electro- magnetic calorimeter and an external veto for cosmic rays surrounding the solenoid. The calorimeter plays an important role in providing particle identification capabilities, a fast online trigger filter, a seed for track reconstruction while working in vacuum, in the presence of 1 T axial magnetic field and in an harsh radiation environment. The calorimeter requirements are to provide a large acceptance for 100 MeV electrons and reach at these energies: (a) a time resolution better than 0.5 ns; (b) an energy resolution < 10% and (c) a position resolution of 1 cm. The calorimeter design consists of two disks, each one made of 674 undoped CsI crystals read by two large area arrays of UV-extended SiPMs. We report here the construction and test of the Module-0 prototype. The Module-0 has been exposed to an electron beam in the energy range around 100 MeV at the Beam Test Facility in Frascati. Preliminary results of timing and energy resolution at normal incidence are shown. A discussion of the technical aspects of the calorimeter engineering is also reported in this paper., 8 pages, 16 figures, submitted to IEEE
Published: 2018
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35. An APD for the Detection of the Fast Scintillation Component of

Author: Richard A. Farrell, Jae Hong Kim, Michael E. Hoenk, D. G. Hitlin, J. Trevor, April D. Jewell, John Hennessy, and Mickel McClish
Subjects: Physics, Nuclear and High Energy Physics, Scintillation, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, business.industry, Barium fluoride, Photodetector, Radiation, 01 natural sciences, Calorimeter, 010309 optics, Nuclear physics, chemistry.chemical_compound, Optics, Nuclear Energy and Engineering, chemistry, 0103 physical sciences, Mu2e, High Energy Physics::Experiment, Quantum efficiency, Fermilab, Electrical and Electronic Engineering, business
Abstract: Barium fluoride crystals are the baseline choice for the calorimeter of the Mu2e experiment at Fermilab. By utilizing the fast 220 nm scintillation component (0.9 ns decay time) and discriminating against the larger slow component at 300 nm (650 ns decay time), it is possible to build a radiation hard calorimeter with good energy and time resolution and high rate capability. This requires a solid state photosensor with high quantum efficiency at 220 nm, discrimination against the 300 nm component, and fast rise and decay times. Progress on the development of such a sensor will be discussed.
Published: 2016

36. Measurement of the e+e−→π+π−π0π0 cross section using initial-state radiation at BABAR

Author: S. H. Robertson, N. Tasneem, R. Godang, E. A. Kravchenko, H. M. Lacker, Aidan Randle-Conde, G. Vasseur, F. De Mori, Crisostomo Sciacca, D. Aston, K. Griessinger, G. Rizzo, A. Oyanguren, G. Wormser, Denis Bernard, R. Cenci, A. Zallo, E. Grauges, Mario Giorgi, T. E. Latham, M. Carpinelli, J. M. Roney, A. J. S. Smith, J. P. Lees, A. M. Eisner, S. Prell, I. Garzia, V. Poireau, A. Soffer, M. Fritsch, C. L. Davis, U. Mallik, T. S. Miyashita, J. Chauveau, S. Luitz, W. Dunwoodie, F. Simonetto, J. G. Smith, A. Lusiani, B. Bhuyan, J. L. Ritchie, V. E. Blinov, D. E. Hutchcroft, J. Cochran, K. Yu Todyshev, B. G. Fulsom, T. Leddig, B. G. Pushpawela, M. V. Purohit, B. N. Ratcliff, J. Albert, V. Santoro, W. S. Lockman, K. T. Flood, T. S. Mattison, Peter S. Kim, M. Piccolo, R. Stroili, W. J. Wisniewski, M. R. Convery, X. C. Lou, S. Passaggio, D. N. Brown, C. P. Jessop, A. M. Rossi, A. G. Denig, J. Va’vra, R. Y. So, V. B. Golubev, G. Batignani, R. Sacco, M. K. Sullivan, C. Hearty, F. F. Wilson, S. Martellotti, D. W. G. S. Leith, J. W. Gary, M. Hess, A. V. Gritsan, E. Ben-Haim, D. J. Summers, P. F. Harrison, M. Röhrken, S. Emery, R. F. Schwitters, F. Di Lodovico, R. C. Field, R. Gorodeisky, R. J. Sobie, A. Palano, Z. C. Huard, L. Vitale, D. J. Payne, D. A. Roberts, G. Calderini, S. Bettarini, C. Hast, M. Rama, D. J. Lange, F. Martinez-Vidal, G. Finocchiaro, I. M. Nugent, G. Piredda, A. M. Lutz, M. T. Graham, A. Hafner, E. M. T. Puccio, J. J. Walsh, J. A. McKenna, W. Panduro Vazquez, E. Luppi, D. S. Chao, M. S. Alam, J. Ocariz, N. Guttman, M. Davier, A. Roodman, F. Anulli, M. Rotondo, G. De Nardo, B. Oberhof, S. M. Spanier, Alessandro Gaz, B. Echenard, T. J. Gershon, R. de Sangro, P. Taras, E. P. Solodov, R. Cheaib, F. Ferroni, R. Waldi, B. T. Meadows, G. D. Lafferty, G. Raven, G. Marchiori, D. Gamba, M. D. Sokoloff, M. Bellis, P. R. Burchat, Elisa Manoni, P. Patteri, C. Buenger, J. M. LoSecco, E. Fioravanti, J. P. Coleman, C. Voss, B. Dey, F. Palombo, T. Lueck, James R. Wilson, W. Gradl, Stephen Robert Wagner, R. Calabrese, K. R. Schubert, C. Cartaro, C. Touramanis, S. J. Sekula, G. Eigen, A. Jawahery, R. Faccini, F. Ferrarotto, A. J. Lankford, F. Le Diberder, A. P. Onuchin, L. Lanceri, E. Paoloni, G. Cibinetto, P. Ongmongkolkul, L. M. Cremaldi, M. Ebert, D. G. Hitlin, F. Forti, Nicola Neri, A. Filippi, D. B. MacFarlane, A. Calcaterra, R. Cowan, Marco Bomben, Douglas Wright, H. A. Neal, G. Casarosa, A. R. Buzykaev, Hamad Ahmed, A. Beaulieu, Yu. G. Kolomensky, V. P. Druzhinin, C. Bozzi, G. Cowan, K. Honscheid, R. J. Barlow, M. Posocco, Yu. I. Skovpen, G. R. Bonneaud, J. Dorfan, M. Verderi, N. Arnaud, Alessandro Pilloni, D. R. Peimer, O. Gruenberg, E. Gabathuler, W. R. Innes, I. M. Peruzzi, Maurizio Biasini, D. R. Muller, Tamara Vazquez Schroeder, Owen Rosser Long, J. A. Ernst, S. I. Serednyakov, F. Bianchi, L. Sun, Tim Adye, S. Dittrich, M. Chrzaszcz, Adrian John Bevan, R. D. Kass, R. Kowalewski, Sw. Banerjee, J. M. Izen, G. Simi, D. Bettoni, Florian Urs Bernlochner, C. Patrignani, V. Tisserand, Martino Margoni, Simon Akar, and R. Prepost
Subjects: Physics, Muon, Photon, Anomalous magnetic dipole moment, 010308 nuclear & particles physics, Electron–positron annihilation, Hadron, BaBar experiment, Electron, 01 natural sciences, Nuclear physics, Positron, 0103 physical sciences, 010306 general physics
Abstract: The process e^+e^− → π^+π^−2π^0γ is investigated by means of the initial-state radiation technique, where a photon is emitted from the incoming electron or positron. Using 454.3 fb^(-1) of data collected around a center-of-mass energy of √s = 10.58 GeV by the BABAR experiment at SLAC, approximately 150000 signal events are obtained. The corresponding nonradiative cross section is measured with a relative uncertainty of 3.6% in the energy region around 1.5 GeV, surpassing all existing measurements in precision. Using this new result, the channel’s contribution to the leading order hadronic vacuum polarization contribution to the anomalous magnetic moment of the muon is calculated as (g^(π+π−2π^0)_μ−2)/2=(17.9 ± 0.1_(stat) ± 0.6_(syst))×10^(-10) in the energy range 0.85 GeV < E_(CM) < 1.8 GeV. In the same energy range, the impact on the running of the fine-structure constant at the Z^0-pole is determined as Δα^(π+π−2π0)(M^2_Z) = (4.44 ± 0.02_(stat) ± 0.14_(syst))×10^(-4). Furthermore, intermediate resonances are studied and especially the cross section of the process e^+e^− → ωπ^0 → π^+π^−2π^0 is measured.
Published: 2017

37. Evidence for CP violation in B+→K*(892)+π0 from a Dalitz plot analysis of B+→KS0π+π0 decays

Author: J. W. Gary, R. Gorodeisky, M. Simard, D. A. Roberts, A. M. Lutz, A. M. Eisner, J. Olsen, M. T. Graham, A. Hafner, E. M. T. Puccio, U. Mallik, Douglas Wright, Peter S. Kim, A. G. Denig, A. V. Gritsan, M. Röhrken, Cheng Chen, T. S. Miyashita, N. Neri, M. V. Purohit, A. Palano, R. F. Schwitters, F. De Mori, R. Contri, G. J. King, J. Albert, D. J. Bard, Sridhara Dasu, C. Cartaro, A. Khan, K. T. Flood, David Hutchcroft, L. Piemontese, P. Patteri, Denis Bernard, G. Lynch, Simon Akar, R. Prepost, D. Lindemann, M. J. Lewczuk, Hamad Ahmed, C. Bünger, E. Gabathuler, W. R. Innes, P. F. Harrison, A. Filippi, F. C. Porter, T. Leddig, R. Sacco, A. J. S. Smith, D. B. MacFarlane, A. Calcaterra, S. J. Sekula, A. Jawahery, B. N. Ratcliff, F. Di Lodovico, J. Va’vra, V. Prasad, B. Bhuyan, B. G. Fulsom, A. Adametz, J. Chauveau, E. A. Kravchenko, N. Guttman, B. Stugu, Crisostomo Sciacca, D. Aston, G. Rizzo, G. Marchiori, D. Su, R. Faccini, F. Ferrarotto, A. J. Lankford, F. Le Diberder, J. D. Richman, A. P. Onuchin, Pablo Villanueva-Perez, L. Lanceri, R. Godang, Dmytro Kovalskyi, M. Piccolo, L. M. Cremaldi, H. R. Band, W. S. Lockman, G. Vasseur, I. M. Peruzzi, R. Cowan, B. Echenard, M. Chrzaszcz, J. P. Lees, A. Stocchi, M. Ebert, M. R. Convery, R. Cenci, D. J. Payne, C. Voß, G. Cibinetto, J. L. Ritchie, Marco Bomben, S. Martellotti, J. Ocariz, Maria Roberta Monge, C. H. Cheng, P. Taras, E. P. Solodov, A. Zallo, H. M. Lacker, H. L. Lynch, G. Batignani, Tim Adye, E. Paoloni, J. R. Fry, R. Cheaib, Y. B. Pan, J. Cochran, D. Bettoni, M. Fritsch, S. I. Serednyakov, R. Kowalewski, F. Bianchi, E. O. Olaiya, E. Fioravanti, E. Ben-Haim, R. D. Kass, S. Luitz, R. Waldi, D. G. Hitlin, S. Bettarini, A. J. Bevan, M. Gaspero, V. Santoro, Corrado Angelini, S. Dittrich, G. Onorato, C. P. Jessop, P. Ongmongkolkul, R. de Sangro, S. L. Wu, Florian Urs Bernlochner, R. Y. So, J. J. Walsh, F. Palombo, T. Lueck, D. Lopes Pegna, J. M. LoSecco, V. B. Golubev, B. Dey, Bogdan Malaescu, B. T. Meadows, P. C. Bloom, W. H. Toki, G. Raven, C. Touramanis, S. M. Spanier, M. Hess, Yu. I. Skovpen, R. Andreassen, M. K. Sullivan, B. G. Pushpawela, I. M. Nugent, W. J. Wisniewski, S. Passaggio, H. W. Wulsin, M. D. Sokoloff, V. P. Druzhinin, T. E. Latham, M. Carpinelli, P. R. Burchat, C. Bozzi, G. Cowan, Denis Derkach, K. Honscheid, M. Rotondo, Yu. G. Kolomensky, C. L. Davis, O. Grünberg, G. De Nardo, M. J. Lee, G. Grosdidier, B. A. Schumm, S. Prell, V. E. Blinov, I. Garzia, Alessandro Pilloni, E. Grauges, C. Patrignani, Mario Giorgi, L. T. Kerth, M. Rama, F. Forti, V. Poireau, G. D. Lafferty, Z. C. Huard, D. S. Chao, J. A. McKenna, D. R. Peimer, A. Soffer, R. J. Barlow, J. M. Roney, M. Morandin, A. Lusiani, K. Yu Todyshev, D. W. G. S. Leith, Christopher West, V. Tisserand, G. Wormser, M. Posocco, M. Davier, C. Hast, J. P. Coleman, U. Uwer, F. Anulli, R. Stroili, F. Simonetto, J. M. Izen, R. H. Schindler, G. Calderini, J. G. Smith, D. J. Lange, G. Piredda, H. A. Neal, W. Panduro Vazquez, G. Casarosa, N. Tasneem, Alessandro Gaz, T. M. Hong, S. H. Robertson, T. S. Mattison, Maurizio Biasini, D. R. Muller, Aidan Randle-Conde, Herbert Koch, Martino Margoni, T. J. Gershon, M. Franco Sevilla, A. R. Buzykaev, A. Beaulieu, Tamara Vazquez Schroeder, R. Ayad, James R. Wilson, G. R. Bonneaud, J. Dorfan, D. N. Brown, K. Griessinger, Owen Rosser Long, A. Oyanguren, A. Seiden, F. F. Wilson, X. C. Lou, W. Dunwoodie, C. Hearty, William T. Ford, R. Calabrese, H. H. F. Choi, B. Hamilton, S. Emery, Elisa Manoni, J. A. Ernst, D. J. Summers, G. P. Dubois-Felsmann, P. Roudeau, L. Sun, R. J. Sobie, M. Verderi, S. Playfer, B. Spaan, L. Vitale, F. Martinez-Vidal, Ph Leruste, N. Arnaud, H. Briand, W. Gradl, E. Luppi, M. L. Perl, A. M. Rossi, Sw. Banerjee, G. Eigen, R. C. Field, A. Roodman, G. Finocchiaro, V. Luth, M. S. Alam, A. Snyder, B. Oberhof, T. Pulliam, G. Simi, F. Ferroni, D. Gamba, M. Bellis, P. M. Patel, Stephen Robert Wagner, and K. R. Schubert
Subjects: Physics, Particle physics, Meson, 010308 nuclear & particles physics, Branching fraction, Hadron, Dalitz plot, Elementary particle, 01 natural sciences, Nuclear physics, Particle decay, 0103 physical sciences, CP violation, B meson, 010306 general physics
Abstract: We report a Dalitz plot analysis of charmless hadronic decays of charged B mesons to the final state K^0_Sπ^+π^0 using the full BABAR data set of 470.9±2.8 million BB[overbar] events collected at the Υ(4S)resonance. We measure the overall branching fraction and CP asymmetry to be B(B^+→K^0π^+π^0)=(31.8±1.8±2.1+^(6.0)_(−0.0))×10^(-6) and A_(CP)(B^+→K^0π^+π^0)=0.07±0.05±0.03^(+0.02)_(−0.03), where the uncertainties are statistical, systematic, and due to the signal model, respectively. This is the first measurement of the branching fraction for B^+→K^0π^+π^0. We find first evidence of a CP asymmetry in B^+→K∗(892)+π^0 decays: A_(CP)(B^+→K∗(892)^+π^0)=−0.52±0.14±0.04^(+0.04)_(−0.02). The significance of this asymmetry, including systematic and model uncertainties, is 3.4 standard deviations. We also measure the branching fractions and CP asymmetries for three other intermediate decay modes.
Published: 2017

38. Search for Invisible Decays of a Dark Photon Produced in e+e− Collisions at BaBar

Author: D. J. Payne, M. Verderi, J. Chauveau, F. De Mori, A. M. Rossi, Joseph Izen, S. Martellotti, I. M. Nugent, A. Giuffrida, D. S. Chao, M. Davier, V. B. Golubev, Heiko Lacker, A. Roodman, Roland Waldi, Abner Soffer, J. L. Ritchie, F. Ferroni, U. Mallik, Paul Fraser Harrison, Ju-Young Kim, T. E. Latham, M. Carpinelli, Stephen Robert Wagner, M. K. Sullivan, J. Ocariz, T. S. Miyashita, K. R. Schubert, N. Neri, T. S. Mattison, E. Fioravanti, C. Hast, D. J. Lange, G. Piredda, G. Wormser, A. Palano, Florian Urs Bernlochner, F. Palombo, T. Lueck, R. Y. So, R. Sacco, R. Godang, Z. C. Huard, W. Panduro Vazquez, P. Taras, E. P. Solodov, D. B. MacFarlane, M. Rama, R. Cenci, M. Fritsch, J. W. Gary, J. A. McKenna, David Hutchcroft, E. Paoloni, A. Zallo, T. J. Gershon, T. Schroeder, S. Bettarini, Yu G. Kolomensky, W. S. Lockman, J. P. Coleman, W. R. Innes, F. Anulli, S. Luitz, A. Filippi, P. Patteri, Alessandro Gaz, D. Gamba, J. Va’vra, M. V. Purohit, M. Bellis, R. Cheaib, J. Albert, Elisa Manoni, B. Bhuyan, D. Aston, C. H. Chen, Andrei Gritsan, B. G. Fulsom, J. J. Walsh, S. M. Spanier, J. Dorfan, M. Heß, N. Tasneem, D. N. Brown, R. Faccini, F. Ferrarotto, A. J. Lankford, Mark Derdzinski, R. Cowan, L. M. Cremaldi, M. T. Graham, J. M. LoSecco, J. P. Lees, F. Le Diberder, S. Prell, A. M. Lutz, I. Garzia, A. J.S. Smith, D. G. Hitlin, James H Cochran, B. Dey, G. D. Lafferty, K. Yu Todyshev, R. C. Field, A. Oyanguren, S. H. Robertson, R. Gorodeisky, Herbert Koch, S. Passaggio, R. Stroili, F. Forti, D. A. Roberts, C. H. Cheng, H. A. Neal, P. Ongmongkolkul, K. Griessinger, Aidan Randle-Conde, I. M. Peruzzi, G. Casarosa, C. Bünger, Yu I. Skovpen, R. de Sangro, G. R. Bonneaud, V. Santoro, T. Leddig, A. Lusiani, C. Touramanis, W. J. Wisniewski, Sau Lan Wu, A. Hafner, O. Grünberg, E. M. T. Puccio, A. R. Buzykaev, M. S. Alam, A. Beaulieu, E. Grauges, Mario Giorgi, James R. Wilson, R. Calabrese, G. Eigen, Simon Akar, D. J. Summers, M. Bomben, R. J. Sobie, L. Vitale, F. Martinez-Vidal, Dominik Müller, G. A. Cowan, G. J. King, C. L. Davis, M. Ebert, J. M. Roney, Stephen Sekula, J. G. Smith, V. P. Druzhinin, C. Bozzi, E. Luppi, H. Ahmed, N. Guttman, G. De Nardo, R. F. Schwitters, F. Simonetto, G. Marchiori, A. Jawahery, A. P. Onuchin, X. C. Lou, B. T. Meadows, G. Raven, V. E. Blinov, K. Honscheid, R. J. Barlow, G. Cibinetto, M. Posocco, Crisostomo Sciacca, G. Rizzo, Colin Jessop, R. Prepost, M. D. Sokoloff, P. R. Burchat, A. Calcaterra, D. W. G. S. Leith, G. Calderini, S. Emery, E. A. Kravchenko, G. Vasseur, K. T. Flood, Alessandro Pilloni, D. R. Peimer, C. Hearty, R. Kowalewski, C. Cartaro, Maurizio Biasini, Owen Rosser Long, L. Sun, Adrian John Bevan, Douglas Wright, S. I. Serednyakov, F. Bianchi, S. Dittrich, E. Gabathuler, M. R. Convery, F. C. Porter, A. G. Denig, M. Chrzaszcz, C. Voß, D. Bettoni, B. N. Ratcliff, C. Patrignani, V. Tisserand, A. M. Eisner, Sw. Banerjee, G. Simi, N. Arnaud, Tim Adye, R. D. Kass, Martino Margoni, G. Finocchiaro, M. Rotondo, M. Röhrken, F. F. Wilson, B. Oberhof, V. Poireau, M. Piccolo, P. C. Kim, G. Batignani, E. Ben-Haim, B. Echenard, D. Bernard, W. Dunwoodie, J. A. Ernst, W. Gradl, B. G. Pushpawela, L. Lanceri, and F. Di Lodovico
Subjects: Physics, Particle physics, Muon, 010308 nuclear & particles physics, Electron–positron annihilation, Dark matter, General Physics and Astronomy, Coupling (probability), 01 natural sciences, Dark photon, B-factory, Nuclear physics, 0103 physical sciences, High Energy Physics::Experiment, Production (computer science), 010306 general physics, Boson
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.
Published: 2017

39. Materials and process development for the fabrication of far ultraviolet device-integrated filters for visible-blind Si sensors

Author: Mickel McClish, Michael E. Hoenk, April D. Jewell, Shouleh Nikzad, John Hennessy, D. G. Hitlin, Todd J. Jones, Alexander G. Carver, Dhar, N. K., and Dutta, Achyut K.
Subjects: Materials science, Fabrication, Silicon, business.industry, Barium fluoride, chemistry.chemical_element, Avalanche photodiode, medicine.disease_cause, Photodiode, law.invention, Atomic layer deposition, chemistry.chemical_compound, Optics, chemistry, law, medicine, Optoelectronics, business, Ultraviolet, Visible spectrum
Abstract: In this work, we show that the direct integration of ultraviolet metal-dielectric filters with Si sensors can improve throughput over external filter approaches, and yield devices with UV quantum efficiencies greater than 50%, with rejection ratios of visible light greater than 10^3. In order to achieve these efficiencies, two-dimensional doping methods are used to increase the UV sensitivity of back-illuminated Si sensors. Integrated filters are then deposited by a combination of Al evaporation and atomic layer deposition of dielectric spacer layers. At far UV wavelengths these filters require the use of non-absorbing dielectrics, and we have pursued the development of new atomic layer deposition processes for metal fluorides materials of MgF_2, AlF_3 and LiF. The performance of the complete multilayer filters on Si photodiodes and CCD imaging sensors, and the design and fabrication challenges associated with this development are demonstrated. This includes the continued development of deep diffused silicon avalanche photodiodes designed to detect the fast 220 nm emission component of barium fluoride scintillation crystals, while optically rejecting a slower component at 300 nm.
Published: 2017

40. Dalitz plot analyses of J/ψ→π+π−π0 , J/ψ→K+K−π0 , and J/ψ→Ks0K±π∓ produced via e+e− annihilation with initial-state radiation

Author: Maurizio Biasini, F. Bianchi, J. Chauveau, F. De Mori, R. Kowalewski, S. Dittrich, Owen Rosser Long, J. A. Ernst, A. P. Onuchin, L. Sun, Adrian John Bevan, Alessandro Pilloni, D. R. Peimer, C. Hearty, Z. C. Huard, F. Di Lodovico, Roberto Calabrese, Heiko Lacker, Denis Bernard, D. J. Payne, R. Faccini, A. J. Lankford, S. Prell, J. Ocariz, A. Roodman, C. Bozzi, B. N. Ratcliff, D. W. G. S. Leith, K. R. Schubert, C. H. Chen, S. M. Spanier, I. M. Peruzzi, Vladimir Blinov, J. L. Ritchie, S. I. Serednyakov, E. Fioravanti, G. Finocchiaro, C. H. Cheng, Sw. Banerjee, A. G. Denig, C. Bünger, J. W. Gary, G. Calderini, E. A. Kravchenko, G. Rizzo, M. Rama, Roland Waldi, Nicolas Arnaud, R. Cowan, A. Zallo, James H Cochran, V. Poireau, R. Cheaib, S. H. Robertson, F. Ferroni, Michael R. Pennington, L. M. Cremaldi, Herbert Koch, G. De Nardo, Crisostomo Sciacca, D. Aston, R. Y. So, S. L. Wu, Yu. I. Skovpen, H. A. Neal, A. Lusiani, J. M. LoSecco, M. Röhrken, Peter S. Kim, Eleonora Luppi, K. Griessinger, Abner Soffer, J. P. Lees, G. A. Cowan, Paul Fraser Harrison, B. Dey, J. Dorfan, V. P. Druzhinin, M. T. Graham, Florian Urs Bernlochner, F. Palombo, T. Lueck, Douglas Wright, G. Cibinetto, R. Godang, U. Mallik, E. Gabathuler, Ju-Young Kim, G. Piredda, J. J. Walsh, W. R. Innes, F. C. Porter, R. Cenci, G. J. King, A. R. Buzykaev, D. N. Brown, P. Ongmongkolkul, J. M. Roney, B. Bhuyan, A. Beaulieu, M. Verderi, B. G. Fulsom, N. Tasneem, F. Le Diberder, C. Cartaro, R. C. Field, M. Heß, J. A. McKenna, M. Chrzaszcz, C. Voß, T. E. Latham, Stephen Robert Wagner, E. Manoni, Colin Jessop, R. Prepost, E. Paoloni, R. de Sangro, G. D. Lafferty, D. G. Hitlin, B. Echenard, A. Oyanguren, Randall Sobie, J. G. Smith, Andrei Gritsan, M. Fritsch, M. S. Alam, Aidan Randle-Conde, S. Passaggio, G. R. Bonneaud, Stephen Sekula, D. E. Hutchcroft, Adam P. Szczepaniak, A. M. Lutz, T. Leddig, A. Calcaterra, M. K. Sullivan, Yu G. Kolomensky, A. M. Eisner, G. Batignani, C. Touramanis, W. S. Lockman, A. Jawahery, F. F. Wilson, R. F. Schwitters, E. Ben-Haim, B. Oberhof, O. Grünberg, V. Santoro, I. Garzia, K. Honscheid, M. R. Convery, C. Patrignani, V. Tisserand, K. Yu. Todyshev, G. Vasseur, R. J. Barlow, J. Va’vra, A. Filippi, K. T. Flood, Daniel A. Roberts, D. J. Summers, Tim Adye, M. V. Purohit, D. Bettoni, T. S. Mattison, R. D. Kass, D. Gamba, J. Albert, W. J. Wisniewski, S. Luitz, Giulia Casarosa, G. Wormser, M. Bomben, S. Emery, S. Martellotti, C. Hast, D. J. Lange, L. Vitale, F. Martinez-Vidal, N. Neri, W. Panduro Vazquez, N. Guttman, Dominik Müller, E. Grauges, Mario Giorgi, V. B. Golubev, T. J. Gershon, M. Rotondo, H. Ahmed, G. Marchiori, F. Simonetto, T. Schroeder, Gabriele Simi, W. Gradl, C. L. Davis, L. Lanceri, P. Patteri, P. Taras, W. Dunwoodie, A. Gaz, X. C. Lou, B. G. Pushpawela, F. Forti, J. P. Coleman, F. Anulli, A. Palano, Martino Margoni, M. Piccolo, S. Bettarini, E. P. Solodov, T. S. Miyashita, M. Posocco, R. Gorodeisky, M. Bellis, A. Hafner, F. Ferrarotto, E. M. T. Puccio, M. Ebert, D. B. MacFarlane, R. Stroili, R. Sacco, James R. Wilson, Joseph Izen, G. Eigen, A. J.S. Smith, Simon Akar, M. Carpinelli, A. Rossi, B. T. Meadows, G. Raven, M. D. Sokoloff, P. R. Burchat, I. M. Nugent, D. S. Chao, and M. Davier
Subjects: Physics, Particle physics, Annihilation, Meson, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, Hadron, Dalitz plot, 01 natural sciences, Nuclear physics, Particle decay, 0103 physical sciences, 010306 general physics, Dimensionless quantity
Abstract: We study the processes e^+e^− → γISR J/ψ, where J/ψ → π^+π^−π^0, J/ψ → K^+K^−π^0, and J/ψ → K^0_SK^±π^∓ using a data sample of 519 fb^(−1) recorded with the BABAR detector operating at the SLAC PEP-II asymmetric-energy e^+e^− collider at center-of-mass energies at and near the Υ(nS) (n=2,3,4) resonances. We measure the ratio of branching fractions R_1 = ^(B(J/ψ → K^+K^−π^0)) /_(B(J/ψ → π^+π^−π^0)) and R_2 = ^(B(J/ψ → K^0_SK^±π^∓))/_(B(J/ψ → π^+π^−π^0)). We perform Dalitz plot analyses of the three J/ψ decay modes and measure fractions for resonances contributing to the decays. We also analyze the J/ψ → π^+π^−π^0 decay using the Veneziano model. We observe structures compatible with the presence of ρ(1450) in all three J/ψ decay modes and measure the relative branching fraction: R(ρ(1450)) = ^(B(ρ(1450) → K^+K^−))/_(B(ρ(1450) → π^+π^−)) = 0.307±0.084(stat)±0.082(sys).
Published: 2017

41. Measurement of the inclusive electron spectrum from B meson decays and determination of |Vub

Author: F. Di Lodovico, D. J. Payne, F. Simonetto, R. H. Schindler, E. A. Kravchenko, R. Faccini, F. Ferrarotto, A. J. Lankford, F. Le Diberder, C. H. Cheng, J. D. Richman, F. De Mori, S. Bettarini, A. J. Bevan, Maurizio Biasini, D. R. Muller, C. Bünger, J. R. Fry, Pablo Villanueva-Perez, H. A. Neal, L. Lanceri, G. Casarosa, Tamara Vazquez Schroeder, A. Adametz, Denis Bernard, G. Vasseur, R. de Sangro, J. L. Ritchie, Alam, S. J. Sekula, A. Jawahery, Owen Rosser Long, R. Y. So, A. Seiden, M. Hess, Peter S. Kim, R. Andreassen, N. Tasneem, A. J. S. Smith, S. M. Spanier, G. Wormser, J. A. Ernst, A. R. Buzykaev, J. Va’vra, G. Onorato, W. H. Toki, A. Beaulieu, L. T. Kerth, A. P. Onuchin, P. Roudeau, L. Sun, X. C. Lou, Aidan Randle-Conde, A. Filippi, R. Godang, V. Prasad, J. Chauveau, G. Lynch, G. Cibinetto, M. Franco Sevilla, V. B. Golubev, Elisa Manoni, D. Bettoni, N. Guttman, B. Stugu, S. Playfer, G. Marchiori, A. V. Gritsan, B. T. Meadows, S. Martellotti, D. E. Hutchcroft, W. Dunwoodie, T. Leddig, S. Luitz, H. W. Wulsin, P. Ongmongkolkul, G. Raven, E. Grauges, H. M. Lacker, H. L. Lynch, A. M. Eisner, Sridhara Dasu, C. Cartaro, M. Röhrken, D. Su, G. P. Dubois-Felsmann, H. R. Band, W. S. Lockman, A. Palano, P. Taras, E. P. Solodov, S. H. Robertson, B. N. Ratcliff, M. Rama, M. Piccolo, G. Batignani, R. Cowan, T. E. Latham, Florian Urs Bernlochner, B. G. Pushpawela, M. J. Lee, M. Carpinelli, J. A. McKenna, Christopher West, C. Patrignani, M. R. Convery, M. V. Purohit, P. R. Burchat, J. Albert, J. M. Roney, G. J. King, M. Gaspero, Cheng Chen, V. Tisserand, Herbert Koch, David Nathan Brown, P. Patteri, Yu. G. Kolomensky, G. R. Bonneaud, J. Dorfan, I. M. Nugent, L. M. Cremaldi, Corrado Angelini, J. G. Smith, E. Ben-Haim, J. P. Coleman, C. Hearty, R. Cenci, D. Lopes Pegna, M. Ebert, D. B. MacFarlane, D. J. Summers, Dmytro Kovalskyi, A. Zallo, E. O. Olaiya, E. Fioravanti, D. S. Chao, V. P. Druzhinin, C. Bozzi, G. Cowan, A. Calcaterra, K. Honscheid, J. P. Lees, F. Palombo, T. Lueck, D. Lindemann, B. A. Schumm, M. J. Lewczuk, A. G. Denig, Sw. Banerjee, M. Davier, R. Contri, R. J. Barlow, T. S. Mattison, W. J. Wisniewski, R. J. Sobie, Giorgi, M. Posocco, M. Fritsch, M. Verderi, J. Cochran, Ph Leruste, C. L. Davis, N. Arnaud, D. G. Hitlin, C. Touramanis, L. Vitale, Marco Bomben, F. Martinez-Vidal, M. Rotondo, S. Passaggio, Crisostomo Sciacca, D. Aston, G. Rizzo, V. Santoro, V. E. Blinov, K. Griessinger, R. F. Schwitters, G. Simi, K. T. Flood, U. Mallik, Douglas Wright, G. De Nardo, B. Hamilton, A. Oyanguren, O. Grünberg, E. Luppi, F. F. Wilson, P. F. Harrison, D. W. G. S. Leith, M. L. Perl, F. Forti, R. Sacco, G. Grosdidier, B. Echenard, A. M. Rossi, T. S. Miyashita, D. J. Bard, N. Neri, H. H. F. Choi, G. Calderini, S. Emery, S. Prell, I. Garzia, L. Piemontese, V. Poireau, Hamad Ahmed, A. Soffer, A. Lusiani, E. Gabathuler, W. R. Innes, F. C. Porter, T. M. Hong, R. Gorodeisky, C. Hast, D. J. Lange, M. Simard, D. A. Roberts, G. Piredda, A. M. Lutz, W. Panduro Vazquez, M. Chrzaszcz, J. Olsen, M. T. Graham, Sau Lan Wu, A. Hafner, J. Ocariz, E. M. T. Puccio, T. J. Gershon, R. Cheaib, I. M. Peruzzi, R. Waldi, J. M. LoSecco, C. Voss, B. Dey, Bogdan Malaescu, S. I. Serednyakov, F. Bianchi, Z. C. Huard, B. Spaan, S. Dittrich, H. Briand, W. Gradl, R. C. Field, G. Finocchiaro, V. Luth, A. Snyder, B. Oberhof, F. Anulli, Alessandro Gaz, B. Bhuyan, B. G. Fulsom, C. P. Jessop, M. K. Sullivan, D. Gamba, M. Bellis, David Norvil Brown, P. C. Bloom, Sokoloff, Y. B. Pan, R. Kowalewski, Denis Derkach, Alessandro Pilloni, D. R. Peimer, M. Morandin, K. Yu Todyshev, U. Uwer, R. Stroili, R. Ayad, James R. Wilson, R. Calabrese, J. J. Walsh, G. Eigen, W. T. Ford, Tim Adye, G. D. Lafferty, R. D. Kass, J. M. Izen, Martino Margoni, Yu. I. Skovpen, J. W. Gary, A. Khan, A. Stocchi, Maria Roberta Monge, E. Paoloni, A. Roodman, T. Pulliam, F. Ferroni, P. M. Patel, Stephen Robert Wagner, K. R. Schubert, Simon Akar, and R. Prepost
Subjects: Physics, Particle physics, Meson, 010308 nuclear & particles physics, Cabibbo–Kobayashi–Maskawa matrix, Branching fraction, media_common.quotation_subject, Hadron, Resonance, Dalitz plot, 01 natural sciences, Asymmetry, 0103 physical sciences, CP violation, 010306 general physics, media_common
Abstract: We report a Dalitz plot analysis of charmless hadronic decays of charged $B$ mesons to the final state $K_{\rm S}^{0}\pi^{+}\pi^{0}$ using the full BaBar dataset of $470.9\pm2.8$ million $B\bar{B}$ events collected at the $\Upsilon(4S)$ resonance. We measure the overall branching fraction and $CP$ asymmetry to be ${\cal B}\left(B^{+}\to K^{0}\pi^{+}\pi^{0}\right) = \left(45.9 \pm 2.6 \pm 3.0^{+8.6}_{-0.0}\right)\times10^{-6}$ and $A_{CP}\left(B^{+}\to K^{0}\pi^{+}\pi^{0}\right) = 0.07 \pm 0.05 \pm 0.03^{+0.02}_{-0.03}$, where the uncertainties are statistical, systematic, and due to the signal model, respectively. This is the first measurement of the branching fraction for $B^{+} \to K^{0}\pi^{+}\pi^{0}$. We find first evidence of a $CP$ asymmetry in $B^{+}\to K^{*}(892)^{+}\pi^{0}$ decays: $A_{CP}\left(B^{+}\to K^{*}(892)^{+}\pi^{0}\right)=-0.52 \pm 0.14 \pm 0.04^{+0.04}_{-0.02}$. The significance of this asymmetry, including systematic and model uncertainties, is $3.4$ standard deviations. We also measure the branching fractions and $CP$ asymmetries for three other intermediate decay modes.
Published: 2017

42. Cross sections for the reactions e+e−→KS0KL0π0 , KS0KL0η , and KS0KL0π0π0 from events with initial-state radiation

Author: B. N. Ratcliff, Cheng Chen, Elisa Manoni, D. B. MacFarlane, A. Calcaterra, M. HeÃŸ, V. B. Golubev, F. De Mori, J. M. Izen, Marco Bomben, Denis Bernard, J. Va’vra, A. J. S. Smith, M. Rotondo, M. Rama, J. A. McKenna, N. Guttman, A. M. Eisner, Martino Margoni, S. Bettarini, A. J. Bevan, C. Cartaro, J. Chauveau, G. Marchiori, G. De Nardo, A. V. Gritsan, C. Touramanis, A. M. Rossi, R. Faccini, F. Ferrarotto, A. J. Lankford, F. Le Diberder, A. G. Denig, L. Lanceri, C. L. Davis, W. Gradl, F. Di Lodovico, S. M. Spanier, A. Roodman, G. J. King, R. F. Schwitters, M. V. Purohit, C. Hearty, D. J. Summers, J. P. Lees, H. A. Neal, G. Casarosa, A. Palano, J. Albert, Alessandro Pilloni, D. R. Peimer, R. C. Field, F. Ferroni, D. J. Payne, Douglas Wright, So R. Y., J. W. Gary, Tim Adye, P. F. Harrison, R. D. Kass, J. J. Walsh, A. R. Buzykaev, R. J. Sobie, L. Vitale, F. Martinez-Vidal, G. Finocchiaro, A. Beaulieu, J. Cochran, M. Piccolo, M. RÃ¶hrken, C. Hast, Ju-Young Kim, Crisostomo Sciacca, D. Aston, G. Rizzo, J. L. Ritchie, I. M. Peruzzi, C. BÃ¼nger, M. S. Alam, G. Batignani, D. J. Lange, G. Piredda, W. Panduro Vazquez, Stephen Robert Wagner, J. Ocariz, Y. I. Skovpen, U. Mallik, G. D. Lafferty, E. Luppi, K. R. Schubert, C. H. Cheng, E. Ben-Haim, T. J. Gershon, S. Martellotti, B. Bhuyan, Hamad Ahmed, R. Cheaib, Peter S. Kim, A. Filippi, B. Oberhof, D. Gamba, B. G. Fulsom, F. Simonetto, R. Waldi, P. Taras, E. P. Solodov, T. S. Miyashita, N. Neri, S. I. Serednyakov, P. Patteri, M. Bellis, F. Bianchi, J. M. LoSecco, R. Cowan, I. M. Nugent, B. Dey, J. M. Roney, D. E. Hutchcroft, T. Leddig, D. S. Chao, James R. Wilson, S. Dittrich, Maurizio Biasini, D. R. Muller, J. G. Smith, W. S. Lockman, R. Calabrese, M. Davier, V. Santoro, C. P. Jessop, J. P. Coleman, R. de Sangro, M. R. Convery, T. S. Mattison, V. P. Druzhinin, C. Bozzi, P. Ongmongkolkul, G. Cowan, E. Paoloni, K. Honscheid, S. Banerjee, X. C. Lou, R. Godang, G. Eigen, M. K. Sullivan, W. J. Wisniewski, R. J. Barlow, Tamara Vazquez Schroeder, D. N. Brown, S. Prell, I. Garzia, M. Posocco, H. M. Lacker, N. Tasneem, F. F. Wilson, Owen Rosser Long, T. E. Latham, V. Poireau, M. Carpinelli, S. Passaggio, S. Emery, Wu S. L., S. H. Robertson, A. Soffer, S. J. Sekula, Herbert Koch, A. Jawahery, R. Stroili, Y. G. Kolomensky, A. Lusiani, J. A. Ernst, K. Griessinger, Aidan Randle-Conde, A. P. Onuchin, A. Oyanguren, G. Cibinetto, B. Echenard, C. VoÃŸ, L. Sun, O. GrÃ¼nberg, Z. C. Huard, F. Anulli, Alessandro Gaz, R. Kowalewski, G. R. Bonneaud, J. Dorfan, E. Fioravanti, F. Palombo, T. Lueck, M. Verderi, N. Arnaud, K. Y. Todyshev, V. E. Blinov, D. W. G. S. Leith, E. Grauges, G. Calderini, Mario Giorgi, Simon Akar, R. Prepost, G. Simi, E. A. Kravchenko, D. Bettoni, Florian Urs Bernlochner, G. Vasseur, R. Cenci, A. Zallo, K. T. Flood, C. Patrignani, M. Fritsch, R. Sacco, V. Tisserand, L. M. Cremaldi, M. Ebert, D. G. Hitlin, S. Luitz, E. Gabathuler, W. R. Innes, F. Forti, F. C. Porter, G. Wormser, M. Chrzaszcz, B. G. Pushpawela, W. Dunwoodie, B. T. Meadows, G. Raven, M. D. Sokoloff, P. R. Burchat, R. Gorodeisky, D. A. Roberts, A. M. Lutz, M. T. Graham, A. Hafner, and E. M. T. Puccio
Subjects: Physics, 010308 nuclear & particles physics, 0103 physical sciences, State (functional analysis), Atomic physics, Radiation, 010306 general physics, 01 natural sciences
Published: 2017

43. Search for B+→K+τ+τ− at the BaBar Experiment

Author: R. Calabrese, R. Faccini, F. Ferrarotto, A. J. Lankford, F. Le Diberder, R. Cenci, R. Sacco, A. Zallo, Elisa Manoni, D. Aston, Gabriele Simi, B. Echenard, M. Fritsch, C. L. Davis, G. A. Cowan, A. G. Denig, D. Bernard, M. T. Graham, Eleonora Luppi, J. L. Ritchie, S. I. Serednyakov, N. Tasneem, S. Martellotti, M. Carpinelli, I. M. Nugent, D. S. Chao, M. Davier, V. Poireau, M. Piccolo, G. Finocchiaro, T. Leddig, M. V. Purohit, Aidan Randle-Conde, I. M. Peruzzi, A. J.S. Smith, N. Arnaud, J. Albert, S. Bettarini, G. R. Bonneaud, S. Emery, G. Batignani, Simon Akar, W. R. Innes, George Lafferty, B. Oberhof, R. F. Schwitters, A. M. Rossi, A. Filippi, Joseph Izen, K. Yu. Todyshev, A. Roodman, R. Y. So, E. Fioravanti, Roland Waldi, F. Ferroni, Alessandro Pilloni, B. Bhuyan, J. M. Roney, J. Dorfan, Abner Soffer, Paul Fraser Harrison, E. P. Solodov, T. S. Miyashita, Ju-Young Kim, E. Grauges, F. Simonetto, R. Cowan, F. Bianchi, Miriam Heß, A. Calcaterra, Stephen Robert Wagner, F. Forti, M. K. Sullivan, Mario Giorgi, A. Oyanguren, C. Cartaro, G. Raven, J. J. Walsh, S. Dittrich, M. Röhrken, D. R. Peimer, Giulia Casarosa, M. D. Sokoloff, G. Wormser, D. N. Brown, F. Di Lodovico, D. J. Payne, J. A. McKenna, P. R. Burchat, W. Dunwoodie, M. R. Convery, C. Bünger, J. A. Ernst, W. Gradl, E. Ben-Haim, L. Lanceri, D. W. G. S. Leith, Colin Jessop, R. Prepost, E. Paoloni, B. G. Pushpawela, C. H. Cheng, Timothy Gershon, Alberto Lusiani, H. A. Neal, X. C. Lou, R. Godang, R. de Sangro, M. Verderi, Biplab Dey, B. N. Ratcliff, Fergus Wilson, R. Gorodeisky, D. Gamba, D. A. Roberts, G. Calderini, P. Taras, C. Touramanis, T. Schroeder, U. Mallik, G. Vasseur, K. T. Flood, J. Chauveau, F. De Mori, A. R. Buzykaev, M. S. Alam, Roger Barlow, Martino Margoni, B. G. Fulsom, A. Beaulieu, P. C. Kim, N. Guttman, G. De Nardo, Sau Lan Wu, A. Hafner, E. M. T. Puccio, A. Jawahery, R. Kowalewski, Yu. I. Skovpen, G. Cibinetto, C. Hearty, G. Marchiori, Andrei Gritsan, D. J. Summers, Florian Urs Bernlochner, F. Palombo, T. Lueck, K. R. Schubert, M. Ebert, M. Bomben, Maurizio Biasini, L. Vitale, F. Martinez-Vidal, Marcello Rotondo, Dominik Müller, C. H. Chen, Stephen Sekula, Owen Rosser Long, H. Ahmed, S. M. Spanier, Vladimir Blinov, L. M. Cremaldi, J. P. Coleman, J. R. Smith, A. P. Onuchin, L. Sun, Adrian John Bevan, C. Bozzi, D. G. Hitlin, R. C. Field, Matteo Rama, Nicola Neri, S. Prell, K. Honscheid, M. Bellis, Tim Adye, R. D. Kass, T. S. Mattison, James H Cochran, M. Posocco, V. P. Druzhinin, C. Hast, D. J. Lange, G. Piredda, R. Stroili, Marcin Chrzaszcz, James R. Wilson, G. Eigen, A. M. Lutz, S. Passaggio, V. B. Golubev, A. Palano, David Hutchcroft, S. Luitz, P. Patteri, J. Va’vra, D. B. MacFarlane, G. Rizzo, J. P. Lees, V. Santoro, O. Grünberg, Christian Voß, Yu G. Kolomensky, P. Ongmongkolkul, E. A. Kravchenko, Crisostomo Sciacca, W. J. Wisniewski, G. J. King, J. Ocariz, J. W. Gary, R. Cheaib, J. M. LoSecco, S. H. Robertson, Herbert Koch, K. Griessinger, Brian Meadows, Z. C. Huard, W. Panduro Vazquez, V. Luth, W. S. Lockman, F. Anulli, Alessandro Gaz, A. M. Eisner, Sw. Banerjee, D. Bettoni, I. Garzia, Thomas Latham, C. Patrignani, V. Tisserand, E. Gabathuler, F. C. Porter, and Douglas Wright
Subjects: Physics, Particle physics, Muon, Neutral current, 010308 nuclear & particles physics, Electron–positron annihilation, General Physics and Astronomy, BaBar experiment, 01 natural sciences, Nuclear physics, 0103 physical sciences, B meson, Neutrino, 010306 general physics, Energy (signal processing), Lepton
Abstract: We search for the rare flavor-changing neutral current process B^{+}→K^{+}τ^{+}τ^{-} using data from the BABAR experiment. The data sample, collected at the center-of-mass energy of the ϒ(4S) resonance, corresponds to a total integrated luminosity of 424 fb^{-1} and to 471×10^{6} BB[over ¯] pairs. We reconstruct one B meson, produced in the ϒ(4S)→B^{+}B^{-} decay, in one of many hadronic decay modes and search for activity compatible with a B^{+}→K^{+}τ^{+}τ^{-} decay in the rest of the event. Each τ lepton is required to decay leptonically into an electron or muon and neutrinos. Comparing the expected number of background events with the data sample after applying the selection criteria, we do not find evidence for a signal. The resulting upper limit, at the 90% confidence level, is B(B^{+}→K^{+}τ^{+}τ^{-})
Published: 2017

44. The calorimeter of the Mu2e experiment at Fermilab

Author: S. Donati, Yu.I. Davydov, Bertrand Echenard, J. Budagov, S. Miscetti, F. Raffaelli, R. Donghia, A. Saputi, I. Sarra, Luca Morescalchi, V. Tereshchenko, Z. Usubov, F. Grancagnolo, M. Cordelli, G. F. Tassielli, E. Diociaiuti, V. Glagolev, S. Di Falco, F. Cervelli, F. Colao, Frank C. Porter, Ren-Yuan Zhu, G. Corradi, N. Atanov, M. Martini, E. Dané, F. Spinella, V. Baranov, D. G. Hitlin, S. Giovannella, K. T. Flood, Gianantonio Pezzullo, F. Happacher, Tommaso Radicioni, M. Ricci, T. S. Miyashita, P. Murat, Atanov, N., Baranov, V., Budagov, J., Cervelli, F., Colao, F., Cordelli, M., Corradi, G., Dané, E., Davydov, Y. I., Falco, S. Di, Diociaiuti, E., Donati, S., Donghia, R., Echenard, B., Flood, K., Giovannella, S., Glagolev, V., Grancagnolo, F., Happacher, F., Hitlin, D. G., Martini, M., Miscetti, S., Miyashita, T., Morescalchi, L., Murat, P., Pezzullo, G., Porter, F., Raffaelli, F., Radicioni, T., Ricci, M., Saputi, A., Sarra, I., Spinella, F., Tassielli, G., Tereshchenko, V., Usubov, Z., and Zhu, R. Y.
Subjects: Physics - Instrumentation and Detectors, Physics::Instrumentation and Detectors, FOS: Physical sciences, Cosmic ray, Electron, 01 natural sciences, 7. Clean energy, Radiation-hard detector, Nuclear physics, Calorimeters, Radiation-hard detectors, Instrumentation, Mathematical Physics, 0103 physical sciences, Mu2e, Fermilab, 010306 general physics, Physics, Calorimeter, Muon, Calorimeter (particle physics), 010308 nuclear & particles physics, Instrumentation and Detectors (physics.ins-det), Orders of magnitude (time), High Energy Physics::Experiment, Lepton
Abstract: The Mu2e experiment at Fermilab looks for Charged Lepton Flavor Violation (CLFV) improving by 4 orders of magnitude the current experimental sensitivity for the muon to electron conversion in a muonic atom. A positive signal could not be explained in the framework of the current Standard Model of particle interactions and therefore would be a clear indication of new physics. In 3 years of data taking, Mu2e is expected to observe less than one background event mimicking the electron coming from muon conversion. Achieving such a level of background suppression requires a deep knowledge of the experimental apparatus: a straw tube tracker, measuring the electron momentum and time, a cosmic ray veto system rejecting most of cosmic ray background and a pure CsI crystal calorimeter, that will measure time of flight, energy and impact position of the converted electron. The calorimeter has to operate in a harsh radiation environment, in a 10-4 Torr vacuum and inside a 1 T magnetic field. The results of the first qualification tests of the calorimeter components are reported together with the energy and time performances expected from the simulation and measured in beam tests of a small scale prototype., Comment: 11 pages, 7 figures, proceedings of 14th Topical Seminar on Innovative Particle and Radiation Detectors (IPRD16) 3 - 6 October 2016 Siena, Italy, Journal of Instrumentation, Volume 12, January 2017 http://stacks.iop.org/1748-0221/12/i=01/a=C01061
Published: 2017

45. Design and status of the Mu2e Calorimeter

Author: S. Donati, Gianantonio Pezzullo, G. Corradi, Luca Morescalchi, N. Atanov, S. Giovannella, Yu.I. Davydov, J. Budagov, F. Raffaelli, V. Glagolev, S. Miscetti, A. Saputi, S. Di Falco, M. Martini, F. Cervelli, I. Sarra, M. Cordelli, F. Happacher, G. F. Tassielli, E. Diociaiuti, F. Colao, E. Pedreschi, B. Echenard, F. Grancagnolo, D. G. Hitlin, F. Spinella, R. Donghia, V. Tereshchenko, Ren-Yuan Zhu, Z. Usubov, M. Ricci, T. S. Miyashita, P. Murat, F. C. Porter, V. A. Baranov, Atanov, N., Baranov, V., Budagov, J., Davydov, Y. I., Glagolev, V., Tereshchenko, V., Usubov, Z., Cervelli, F., Falco, S. D., Donati, S., Morescalchi, L., Pedreschi, E., Pezzullo, G., Raffaelli, F., Spinella, F., Colao, F., Cordelli, M., Corradi, G., Diociaiuti, E., Donghia, R., Giovannella, S., Happacher, F., Martini, M., Miscetti, S., Ricci, M., Saputi, A., Sarra, I., Echenard, B., Hitlin, D. G., Miyashita, T., Porter, F., Zhu, R. Y., Grancagnolo, F., Tassielli, G., and Murat, P.
Subjects: Range (particle radiation), Materials science, Calorimeter (particle physics), Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, business.industry, Radiation, 01 natural sciences, Optics, Silicon photomultiplier, 0103 physical sciences, Mu2e, Cathode ray, Calibration, business, 010303 astronomy & astrophysics, Beam (structure)
Abstract: The Mu2e calorimeter is composed by $\sim 1400$ un- doped CsI crystals coupled to large area UV extended Silicon Photomultipliers(SIPMs) arranged intwo annular disks. This calorimeter has to provide precise information on energy, timing and position resolution. It should also be fast enough towithstand the high rate background and it mustoperate and survive in a high radiation environment. All steps done for the construction and test of the Module -0 prototype, that is an array of51 pre-production crystals, are reported. The Module -0 was exposed to an electron beam in the energy range around 100 MeV at the BTF (Beam Test Facility) inFrascati. Preliminary results of timing and energy resolution at normal incidence are shown.
Published: 2017
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46. Time-integrated luminosity recorded by the BABARdetector at the PEP-IIe+e- collider

Author: M. J. Lewczuk, E. A. Kravchenko, T. Lueck, Gabriele Simi, C. L. Davis, Crisostomo Sciacca, D. Aston, R. Gamet, A. M. Eisner, J. L. Ritchie, R. Y. So, R. Andreassen, V. Prasad, G. Hamel de Monchenault, A. P. Wagner, Mauro Morandin, J. Ocariz, M. V. Purohit, Sw. Banerjee, J. Albert, M. A. Mazzoni, G. Wormser, M. Wittgen, G. Lynch, P. Patteri, Peter S. Kim, T. Schroeder, J. W. Gary, W. Dunwoodie, S. M. Spanier, E. Behn, Douglas Wright, M. L. Kocian, B. Bhuyan, R. Cheaib, L. Piemontese, R. F. Schwitters, Marcello Rotondo, M. Sigamani, B. G. Fulsom, Jose F Benitez, I. M. Peruzzi, A. Stocchi, Bruce Schumm, James R. Wilson, E. Prencipe, X. Nguyen, Andrei Gritsan, Claudio Campagnari, E. Gabathuler, W. R. Innes, F. C. Porter, J. M. LoSecco, O. Hamon, A. Roodman, L. M. Cremaldi, Simon Akar, S. Zambito, G. Onorato, A. Cervelli, William T. Ford, H. Briand, R. Godang, V. E. Blinov, D. J. Asgeirsson, B. C. Wray, N. B. Sinev, P. Ongmongkolkul, A. N. Yushkov, A. M. Ruland, F. Forti, H. L. Lynch, M. Verderi, Heiko Lacker, D. Su, H. A. Neal, T. Pulliam, Roland Waldi, F. Ferroni, S. I. Serednyakov, F. Bianchi, D. Monorchio, C. Voß, A. E. Rubin, E. Guido, Enrico Robutti, M. Piccolo, G. Raven, E. Grauges, J. P. Burke, A. Oyanguren, J. R. Fry, G. R. Bonneaud, U. Mallik, Dmytro Kovalskyi, G. J. King, J. J. Walsh, D. R. Peimer, G. Batignani, Sridhara Dasu, C. H. Cheng, P. D. Dauncey, A. G. Denig, J. E. Brau, M. K. Sullivan, M. D. Sokoloff, A. J. Martinez, J. P. Lees, S. Sitt, P. J. Clark, T. S. Miyashita, P. R. Burchat, Nicola Neri, M. Mandelkern, D. W. G. S. Leith, M. Gaspero, A. M. Lutz, R. Calabrese, C. Touramanis, A. Adametz, Paul Fraser Harrison, R. de Sangro, E. Ben-Haim, D. M. Strom, R. Cenci, G. Cibinetto, Hossain Ahmed, Chunhui Chen, W. J. Wisniewski, R. Stroili, G. M. Vitug, T. Hartmann, A. R. Buzykaev, O. Grünberg, M. Carpinelli, P. M. Patel, P. Lewis, G. Eigen, M. R. Monge, P. C. Bloom, Yu. G. Kolomensky, C. Dallapiccola, A. Zallo, D. Lindemann, B. Echenard, D. Bernard, B. Spaan, Stephen Robert Wagner, W. H. Toki, T. Leddig, G. Calderini, D. H. Wright, Thomas Latham, H. R. Band, D. Dujmic, C. Patrignani, Z. C. Huard, K. R. Schubert, Elisa Manoni, W. S. Lockman, M. Fritsch, S. Playfer, J. Chauveau, P. Taras, E. P. Solodov, V. Tisserand, R. Gorodeisky, M. Simard, D. A. Roberts, S. Passaggio, A. A. Salnikov, A. Calcaterra, Eleonora Luppi, M. R. Convery, W. Gradl, W. Park, A. Perez, L. Lanceri, M. T. Graham, D. Bettoni, Alberto Lusiani, I. Garzia, Christopher West, G. Grosdidier, C. Angelini, J. P. Coleman, Yu I. Skovpen, Sau Lan Wu, Marco Bomben, A. Hafner, G. De Nardo, K. Yu Todyshev, M. H. Schune, G. Sciolla, F. Anulli, B. Hamilton, M. Ebert, Colin Jessop, A. Palano, U. Uwer, Biplab Dey, R. C. Field, T. S. Mattison, Alessandro Gaz, G. Finocchiaro, V. Luth, E. M. T. Puccio, P. Biassoni, G. Casarosa, M. L. Perl, Fergus Wilson, R. Prepost, V. Santoro, C. Hast, D. J. Lange, G. Piredda, F. Simonetto, P. Sonnek, R. H. Schindler, Matteo Rama, Abner Soffer, S. H. Robertson, Joseph Izen, M. Morii, Stephen Sekula, Ch Yèche, S. Prell, T. J. Gershon, Herbert Koch, E. O. Olaiya, V. B. Golubev, B. Lindquist, M. S. Alam, James H Cochran, David Hutchcroft, A. Snyder, V. Poireau, Marcello Giorgi, S. Luitz, X. C. Lou, Florian Urs Bernlochner, D. Lopes Pegna, A. Khan, V. P. Druzhinin, C. Bozzi, K. Griessinger, I. M. Nugent, N. Gagliardi, D. B. MacFarlane, F. Palombo, H. W. Wulsin, D. S. Chao, D. N. Brown, Weitao Wang, J. Dorfan, Brian Meadows, C. Bünger, R. Frey, M. Davier, M. H. Kelsey, R. Baldini-Ferroli, D. Kirkby, J. A. McKenna, B. Oberhof, T. M. Hong, G. Vasseur, K. T. Flood, V. Ziegler, K. Honscheid, James D. Olsen, R. Kroeger, R. Sacco, A. Jawahery, B. N. Ratcliff, G. Rizzo, E. Feltresi, A. P. Onuchin, M. Posocco, R. Contri, L. T. Kerth, Alessandro Rossi, R. Schwierz, C. Hearty, Ph Leruste, A. J.S. Smith, N. Arnaud, M. Lo Vetere, D. J. Summers, W. T. Meyer, R. J. Sobie, L. Vitale, F. Martinez-Vidal, Dominik Müller, N. Tasneem, S. Pacetti, R. Cowan, S. Bettarini, M. Bellis, Aidan Randle-Conde, George Lafferty, R. Faccini, M. Franco Sevilla, G. P. Dubois-Felsmann, R. Ayad, Y. B. Pan, R. Kowalewski, A. Y. Rakitin, S. Nelson, Denis Derkach, Maurizio Biasini, B. Malaescu, Owen Rosser Long, A. Seiden, J. A. Ernst, L. Sun, Adrian John Bevan, F. Ferrarotto, A. J. Lankford, F. Le Diberder, E. Torrence, J. D. Richman, Pablo Villanueva-Perez, D. J. Bard, D. G. Hitlin, G. A. Cowan, J. Va’vra, D. Gamba, Eugenio Paoloni, N. Guttman, B. Stugu, G. Marchiori, Roger Barlow, Martino Margoni, R. M. White, C. Cartaro, L. Li Gioi, P. Roudeau, A. M. Gabareen, Tim Adye, R. D. Kass, E. Fioravanti, H. H. F. Choi, S. Emery, Maurizio Martinelli, J. M. Roney, J. G. Smith, F. Di Lodovico, D. J. Payne, and U. Nauenberg
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Photon, 010308 nuclear & particles physics, Electron–positron annihilation, Detector, BaBar experiment, Resonance, 01 natural sciences, Nuclear physics, 0103 physical sciences, 010306 general physics, Instrumentation
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 ϒ(4S), ϒ(3S), and ϒ(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 ϒ(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 ϒ(3S) and ϒ(2S) resonances, an additional uncertainty arises due to ϒ→e^+e^-X background. For data collected off the ϒ 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 ϒ(4S), 0.58% (0.72%) for the ϒ(3S), and 0.68% (0.88%) for the ϒ(2S).
Published: 2013

47. Measurement of the B0→D*−π+π−π+ branching fraction

Author: Colin Jessop, R. Prepost, N. Tasneem, G. Vasseur, K. T. Flood, J. Ocariz, Debbie Payne, S. H. Robertson, J. Chauveau, F. De Mori, F. Forti, J. W. Gary, J. Dorfan, S. Emery, Herbert Koch, B. Bhuyan, S. Bettarini, B. G. Fulsom, Aidan Randle-Conde, George Lafferty, R. Cheaib, M. K. Sullivan, Maurizio Biasini, G. R. Bonneaud, K. Griessinger, Yu. I. Skovpen, Brian Meadows, G. De Nardo, A. M. Eisner, J. M. LoSecco, M. Röhrken, R. Cenci, A. Zallo, Gabriele Simi, Z. C. Huard, Sw. Banerjee, C. L. Davis, Owen Rosser Long, Andrei Gritsan, J. L. Ritchie, F. Anulli, Abner Soffer, Alessandro Gaz, F. Di Lodovico, Denis Bernard, Miriam Heß, T. S. Mattison, J. A. Ernst, S. I. Serednyakov, Douglas Wright, U. Mallik, M. Fritsch, C. Hast, I. M. Peruzzi, A. P. Onuchin, L. Sun, A. Filippi, D. J. Lange, G. Piredda, M. Verderi, W. Gradl, Peter S. Kim, Eleonora Luppi, W. Panduro Vazquez, S. Martellotti, G. J. King, M. Carpinelli, L. Lanceri, M. V. Purohit, J. A. McKenna, F. Bianchi, R. Y. So, Adrian John Bevan, F. Simonetto, S. Dittrich, Simon Akar, F. Betti, R. Cowan, E. Paoloni, D. W. G. S. Leith, J. Albert, R. C. Field, K. R. Schubert, Nicolas Arnaud, A. M. Lutz, Tim Adye, R. D. Kass, G. Finocchiaro, V. Luth, Alessandro Pilloni, B. Echenard, G. Calderini, D. R. Peimer, A. Oyanguren, M. Piccolo, E. Gabathuler, F. Le Diberder, Fernando Palombo, M. S. Alam, Stephen Sekula, W. R. Innes, Timothy Gershon, F. C. Porter, J. M. Roney, G. Raven, I. M. Nugent, Alberto Lusiani, G. Batignani, Biplab Dey, C. Touramanis, C. H. Chen, S. M. Spanier, E. Grauges, Fergus Wilson, D. S. Chao, Vladimir Blinov, P. R. Burchat, C. Bozzi, S. Luitz, J. R. Smith, J. M. Izen, K. Honscheid, B. Oberhof, Mario Giorgi, J. J. Walsh, M. Davier, G. Rizzo, Florian Urs Bernlochner, T. Lueck, R. Calabrese, E. Ben-Haim, K. Yu. Todyshev, Michael Sokoloff, Elisa Manoni, M. Posocco, T. Leddig, B. G. Pushpawela, R. Sacco, B. N. Ratcliff, X. C. Lou, W. S. Lockman, C. H. Cheng, H. A. Neal, Roger Barlow, D. Bettoni, Martino Margoni, R. Kowalewski, M. Ebert, C. Hearty, M. T. Graham, R. de Sangro, S. L. Wu, M. R. Convery, A. M. Rossi, A. Calcaterra, A. J.S. Smith, R. Gorodeisky, D. J. Summers, A. Roodman, D. A. Roberts, I. Garzia, A. R. Buzykaev, Thomas Latham, E. Fioravanti, C. Patrignani, V. Tisserand, M. Bomben, A. Beaulieu, A. Hafner, L. Vitale, Roland Waldi, V. Santoro, F. Ferroni, E. M. T. Puccio, F. Martinez-Vidal, Dominik Müller, Paul Fraser Harrison, H. Ahmed, D. B. MacFarlane, R. Godang, Stephen Robert Wagner, D. N. Brown, A. G. Denig, Yu. G. Kolomensky, Matteo Rama, S. Prell, James H Cochran, V. Poireau, Marcello Rotondo, V. P. Druzhinin, L. M. Cremaldi, D. G. Hitlin, P. Taras, Nicola Neri, J. P. Coleman, Giulia Casarosa, G. Wormser, R. F. Schwitters, T. Schroeder, O. Grünberg, W. Dunwoodie, Jean-Pierre Lees, Christian Voß, E. A. Kravchenko, Crisostomo Sciacca, D. Aston, James R. Wilson, G. Eigen, P. Ongmongkolkul, R. Stroili, Marcin Chrzaszcz, E. P. Solodov, T. S. Miyashita, M. Bellis, C. Bünger, J. Kim, A. Jawahery, G. Cibinetto, W. J. Wisniewski, S. Passaggio, V. B. Golubev, A. Palano, David Hutchcroft, P. Patteri, C. Cartaro, R. Faccini, F. Ferrarotto, A. J. Lankford, G. A. Cowan, J. Va’vra, D. Gamba, N. Guttman, and G. Marchiori
Subjects: Nuclear physics, Physics, Particle physics, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, 0103 physical sciences, 010306 general physics, 01 natural sciences, Lepton, Universality (dynamical systems)
Abstract: Using a sample of (470.9 +- 2.8) x 10^6 BB-bar pairs, we measure the decay branching fraction B(B^0 -> D^*- pi^+ pi^- pi^+) = (7.26 +- 0.11 +- 0.31) x 10^-3, where the first uncertainty is statistical and the second is systematic. Our measurement will be helpful in studies of lepton universality by measuring B(B^0 -> D^*- tau^+ nu_tau) using tau^+ -> pi^+ pi^- pi^+ nu-bar_tau decays, normalized to B(B^0 -> D^*- pi^+ pi^- pi^+.
Published: 2016

48. Search for the radiative decay B0→γ

Author: A. B. Breon, R. G. Jacobsen, V. B. Koptchev, S. Ahmed, D. Gamba, J. L. Ritchie, I. Kitayama, S. E. Morgan, T. B. Moore, S. Schrenk, M. Dickopp, M. Legendre, P. C. Bloom, H. K. Hadavand, E. Chen, Q. H. Guo, B. Stugu, D. Dujmic, G. Marchiori, S. H. Robertson, N. S. Knecht, V. B. Golubev, G. Therin, P. Kim, Ch Yèche, F. Bucci, Paul Kyberd, M. M. Macri, G. Kukartsev, P. F. Giraud, J. C. Dingfelder, J. W. Berryhill, S. J. Sekula, A. Jawahery, S. D. Foulkes, G. P. Taylor, Herbert Koch, Maurizio Pierini, V. Halyo, R. Capra, R. N. Cahn, Maria Roberta Monge, G. Cibinetto, Peter Elmer, G. Wagner, L. Gladney, J. Schwiening, R. Faccini, N. De Groot, F. Ferrarotto, A. J. Lankford, F. Le Diberder, A. Mihalyi, Pierluigi Paolucci, N. Danielson, F. Galeazzi, Marcella Bona, J. D. Richman, M. J.J. John, R. Aleksan, E. Paoloni, P. Spradlin, R. Contri, G. W. Morton, M. H. Schune, U. Uwer, T. Brandt, R. Stroili, H. A. Neal, A. Roodman, T. J. Orimoto, D. Fortin, C. H. Cheng, A. Höcker, Liliana Teodorescu, X. C. Lou, J. J. Walsh, J. Marks, K. K. Gan, X. R. Chen, G. A. Cowan, S. Ricciardi, M. Lu, G. De Nardo, F. Simonetto, R. H. Schindler, Marcello Rotondo, Alexis Pompili, Tetiana Hryn'ova, A. P. Onuchin, H. U. Flaecher, A. Zghiche, A. M. Eichenbaum, C. K. Lae, M. T. Ronan, S. Otto, A. Chen, A. Ryd, R. Liu, A. Zallo, J. R. Fry, R. J. Wilson, L. M. Cremaldi, G. Rizzo, C. Lu, D. Judd, V. Lepeltier, B. A. Petersen, J. A. McKenna, F. Couderc, C. L. Brown, Bruce Schumm, F. Colecchia, R. Bartoldus, K. T. Flood, John Allison, Zongfu Yu, M. J. Charles, D. Côté, Shanhui Fan, Lijun Zhang, C. A. Heusch, P. Patteri, J. W. Lamsa, R. de Sangro, J. Brose, D. del Re, T. Pulliam, Roland Waldi, F. Ferroni, J. Schubert, Davide Piccolo, S. Saremi, M. Benayoun, S. L. Wu, W. Kozanecki, L. Del Buono, Roberto Calabrese, B. C. Shen, S. Brunet, A. Satpathy, A. Lu, A. J. Hart, L. Bosisio, A. Calcaterra, D. G. Hitlin, P. Rankin, S. Bailey, H. Marsiske, O. Hamon, J. A. Nash, M. Lo Vetere, Francesco Polci, R. Kroeger, A. W. Weidemann, C. Voci, H. L. Snoek, R. Eckmann, I. M. Peruzzi, W. H. Toki, S. Ye, T. C. Petersen, R. Ter-Antonyan, Eleonora Luppi, J. P. Lees, Te Latham, H. J. Bulten, M. Pelizaeus, Crisostomo Sciacca, D. Aston, H. Schröder, F. Bellini, S. Luitz, V. E. Ozcan, A. N. Yushkov, Yuehong Xie, D. Boutigny, J. Ocariz, Nicola Neri, A. T. Watson, D. A. Bowerman, D. C. Williams, J. M. Roney, M. K. Sullivan, E. Treadwell, T. Schalk, V. Miftakov, Y. P. Lau, Justin Albert, Paul Fraser Harrison, Mauro Morandin, M. Fritsch, S. S. Hertzbach, A. Lazzaro, D. Su, Sai-Juan Chen, T. Cuhadar-Donszelmann, M. G. Greene, A. D'Orazio, M. Chao, B. Spaan, S. Jayatilleke, Julie Malcles, V. Poireau, K. A. Ulmer, C. Hearty, A. M. Lutz, A. J.S. Smith, H. Briand, A. M. Eisner, Hui Li, M. A. Mazzoni, G. Wormser, C. Gatto, Y. Groysman, F. Blanc, C. Touramanis, Luca Lista, J. M. Thompson, M. Bruinsma, W. J. Wisniewski, A. Soha, L. Wilden, M. Piccolo, M. T. Allen, G. Lynch, E. A. Eckhart, C. Roat, A. J. Bevan, F. Muheim, James R. Wilson, M. G. Wilson, M. Steinke, D. J. Summers, M. Pripstein, A. W. Borgland, D. A. Roberts, F. E. Taylor, Sergio Grancagnolo, A. Petzold, G. Hamel de Monchenault, R. S. Panvini, P. M. Patel, T. Schroeder, M. C. Hodgkinson, G. Grosdidier, J. E. Sundermann, Markus Cristinziani, Stephen Robert Wagner, J.H. Panetta, Mohamed H. Ahmed, G. Batignani, N. Cavallo, L. Lanceri, E. Grauges-Pous, Stéphane Plaszczynski, D. S. Best, M. L. Kocian, T. Held, K. E. Ford, M. T. Graham, T. J. Harrison, J. W. Gary, G. Benelli, E. O. Olaiya, L. M. Mir, T. R. McMahon, T. Piatenko, W. D. Hulsbergen, M. V. Purohit, S. Yang, W. Dunwoodie, E. I. Rosenberg, C. T. Day, Brandon L. Hartfiel, M. C. Simani, Francesco Fabozzi, K. R. Schubert, G. Vasileiadis, R. J. Sobie, F. Anulli, A. Perazzo, C. Voena, L. Vitale, S. Passaggio, F. X. Yumiceva, M. Mandelkern, U. Langenegger, G. W. Brandenburg, H. Kagan, W. A. Wenzel, J. Va'vra, F. Martinez-Vidal, Dominik Müller, D. P. Stoker, Nicolas Berger, T. Glanzman, Matteo Rama, M. A. Saeed, N. R. Barlow, F. Palombo, B. Franek, M. Wittgen, Vivek Sharma, S. Dittongo, N. A. Roe, G. P. Dubois-Felsmann, R. C. Field, F. Salvatore, M. Carpinelli, Lydia Roos, G. Finocchiaro, V. Luth, G. Blaylock, M. Morganti, S. Prell, G. Eigen, F. Safai Tehrani, R. F. Schwitters, Q. K. Wong, J.J. Reidy, S. M. Spanier, D. B. MacFarlane, S. Playfer, James D. Olsen, C. P. O'Grady, R. R. Kofler, C. T. Potter, M. Krishnamurthy, A. V. Gritsan, Mario Giorgi, Jie Zhang, R. Claus, Akram Khan, James H Cochran, Matteo Negrini, J. G. Smith, R. S. Dubitzky, J. Stelzer, R. Godang, M. S. Alam, B. Lewandowski, A. Snyder, M. S. Gill, L. T. Kerth, M. A. Baak, M. Pioppi, D. E. Wagoner, A. Soffer, W. O. Ruddick, J. M. LoSecco, A. V. Telnov, H. M. Lacker, H. L. Lynch, S. Morganti, Sridhara Dasu, K. Koeneke, Gabriele Simi, Roberto Covarelli, R. W. Kadel, B. Cheng, V. E. Blinov, A. Palano, M. P. Kelly, B. T. Meadows, F. Gallo, G. Raven, C. L. Davis, J. I. Yi, P. D. Jackson, R. L. Flack, R. K. Yamamoto, M. Barrett, D. M. Strom, N. B. Sinev, K. S. Chaisanguanthum, H. P. Paar, S. A. Majewski, J. E. Brau, M. D. Sokoloff, C. M. Brown, M. Saleem, P. R. Burchat, R. Gamet, E. Charles, Fabio Cossutti, M. G. Green, D. Bettoni, Yu I. Skovpen, X. Giroux, T. W. Beck, Y. Karyotakis, P. Grenier, D. E. Hutchcroft, J. M. Bauer, C. Dallapiccola, Ch De La Vaissière, J. J. Hollar, S. F. Ganzhur, H. R. Band, M. Haire, J. C. Williams, J. Kroseberg, G. Cavoto, M. Davier, T. M. Hong, R. Messner, G. Rong, V. N. Ivanchenko, V. Lombardo, M. B. Nikolich, V. Eschenburg, W. S. Lockman, C. M. Hawkes, G. Vuagnin, B. N. Ratcliff, Colin Jessop, R. Prepost, R. Nogowski, D. W. G. S. Leith, W. N. Cottingham, T. S. Mattison, D. A. Sanders, G. Schott, N. D. Qi, P. Tan, Alessio Sarti, Amir Farbin, F. Di Lodovico, B. Dahmes, J. Libby, P. Taras, E. P. Solodov, C. D. Buchanan, A. A. Salnikov, R. Schwierz, U. Egede, C. Hast, D. J. Lange, Yu. G. Kolomensky, Q. L. Zeng, G. Piredda, A. Dvoretskii, J. C. Chen, Bernard Aubert, K. Wang, G. Calderini, M. Zito, M. R. Convery, G. Sciolla, S. I. Serednyakov, F. Bianchi, E. Feltresi, D. D. Brown, A. E. Rubin, M. Morii, D. J. Payne, M. Gaspero, A. E. Blinov, A. Olivas, C. C. Young, G. Nesom, Douglas Wright, W. T. Meyer, I. J. Forster, F. R. Wappler, U. Nauenberg, Sh. Rahatlou, M. L. Perl, J. P. Coleman, E. A. Kravchenko, M. Weaver, J. T. Boyd, P. J. Oddone, I. Eschrich, R. Baldini-Ferroli, Joseph Izen, Claudio Campagnari, W. Bhimji, D. Kirkby, G. Vasseur, D. Hufnagel, M. A. Winter, M. Verderi, D. J. Bard, T. Hadig, J. H. von Wimmersperg-Toeller, G. Crosetti, Enrico Robutti, U. Mallik, F. Forti, Pu Wang, A. Samuel, C. Cartaro, Silvano Tosi, W. M. Bugg, D. Kovalskyi, Alberto Lusiani, Fergus Wilson, P. Poropat, Janice Button-Shafer, G. R. Bonneaud, J. Dorfan, A. M. Boyarski, E. J. Hill, P. S. Jackson, P. E. Kutter, P. K. Behera, T. Allmendinger, Ph Leruste, N. Arnaud, D. D. Altenburg, B. Mayer, A. K. Yarritu, A. M. 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Neal, H
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Photon, Annihilation, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, Detector, BABAR detector, 01 natural sciences, Particle identification, HEP, Nuclear physics, 0103 physical sciences, BaBar, CP violation, 010306 general physics, Storage ring
Abstract: We perform a search for the exclusive radiative decay B0→γ, which is dominated by b̄d annihilation, in a sample of 124×106 BB̄ events collected with the BABAR detector at the PEP-II asymmetric-energy e+e- storage ring at SLAC. No significant signal is seen. We set an upper limit on the branching fraction of B(B0→γ)
Published: 2016

49. Search for flavor-changing neutral current and lepton-flavor violating decays of D-0 -> l(+)l(-)

Author: B. C. Shen, Corrado Angelini, J. Ocariz, R. Bartoldus, N. A. Roe, Douglas Wright, O. L. Buchmueller, I. J. Forster, D. E. Hutchcroft, J. M. Bauer, C. Dallapiccola, V. P. Druzhinin, C. Bozzi, J. J. Hollar, H. R. Band, K. Honscheid, C. A. Chavez, Zongfu Yu, J. W. Gary, J. Va'vra, M. J. Charles, A. Buzzo, J. L. Ritchie, J. Chauveau, I. Kitayama, S. I. Serednyakov, R. J. Barlow, I. M. Peruzzi, D. J. Bard, W. S. Lockman, D. del Re, N. Chevalier, M. Posocco, J.J. Reidy, C. M. Cormack, R. Frey, H. K. Hadavand, Q. L. Zeng, L. Tantot, M. H. Kelsey, S. Ricciardi, Tetiana Hryn'ova, J. H. von Wimmersperg-Toeller, P. Grenier, T. Abe, R. S. Dubitzky, M. Bondioli, J. R. Johnson, A. V. Telnov, P. J. Clark, J. A. Nash, M. R. Convery, Bruce Schumm, P. Patteri, T. W. Beck, M. Lo Vetere, R. K. Mommsen, F. Bianchi, Maurizio Biasini, V. B. Golubev, J. M. LoSecco, G. Therin, G. Schott, E. Feltresi, D. D. Brown, A. Lu, Owen Rosser Long, A. Seiden, S. Willocq, G. Della Ricca, D. Thiessen, Y. B. Pan, R. Kowalewski, J. W. Berryhill, A. E. Rubin, I. Ofte, G. B. Mohanty, J. A. Ernst, M. Pivk, A. Zallo, Chunhui Chen, N. B. Sinev, M. Datta, S. Saremi, J. Brose, Wouter Verkerke, A. Calcaterra, A. J. Lyon, C. Hearty, Maurizio Pierini, J. J. Back, C. Thiebaux, M. Pelizaeus, H. Staengle, Julie Malcles, A. M. Eisner, A. J. Hart, G. W. London, K. Paick, F. Couderc, F. Colecchia, D. Monorchio, M. Carpinelli, D. Hufnagel, Hui Li, A. Dorigo, JunJie Wu, Lydia Roos, M. Morganti, R. Contri, H. L. Snoek, M. A. Mazur, R. J. Parry, C. Roat, Pierluigi Paolucci, F. Bellini, D. P. Stoker, D. J. Summers, O. Hamon, D. Dong, H. W. Zhao, G. Rong, Sergio Grancagnolo, A. Petzold, G. Hamel de Monchenault, L. Bosisio, M. Pripstein, P. D. Dauncey, G. J. Grenier, C. K. Lae, R. C. Field, E. Won, Andrei Gritsan, J. M. Roney, D. H. Wright, K. T. Flood, G. Rizzo, Yuehong Xie, Mirco Andreotti, V. Miftakov, P. A. Hart, C. Patrignani, R. Claus, Matteo Negrini, Eleonora Luppi, N. Danielson, F. Galeazzi, M. L. Perl, E. O. Olaiya, M. A. Saeed, Luca Lista, R. S. Panvini, Mauro Morandin, Y. P. Lau, K. K. Gan, J. Button-Shafer, W. D. Hulsbergen, N. R. Barlow, M. K. Sullivan, J. R. Gaillard, E. Treadwell, M. G. Greene, R. J. Sobie, A. W. Weidemann, S. J. Gowdy, A. Perazzo, C. Voena, V. Lillard, L. Vitale, C. De La Vaissiere, V. Lepeltier, A. J.S. Smith, F. Salvatore, C. M. Hawkes, F. Martinez-Vidal, G. Finocchiaro, Dominik Müller, A. J. Bevan, F. Muheim, Justin Albert, D. J.J. Mangeol, P. D. Jackson, R. L. Flack, F. Palombo, Vivek Sharma, M. Benayoun, M. V. Purohit, V. Luth, James D. Olsen, J. G. Smith, G. Vasileiadis, S. Jayatilleke, G. Kukartsev, V. N. Ivanchenko, N. D. Qi, Nicolas Berger, T. Schalk, B. Lewandowski, H. P. Paar, J. E. Brau, F. Blanc, W. A. Wenzel, H. J. Bulten, Sw. Banerjee, W. M. Bugg, D. Kovalskyi, M. A. Mazzoni, G. Wormser, J. Stelzer, Alberto Lusiani, M. B. Nikolich, M. G. Green, D. Bernard, Ajit Mohapatra, S. M. Spanier, A. Satpathy, Q. K. Wong, X. Giroux, M. Legendre, M. Wittgen, D. Lavin, P. C. Bloom, Stephane T'Jampens, P. J. Oddone, Maria Roberta Monge, A. Mihalyi, S. E. Morgan, Y. S. Zhu, M. S. Alam, M. Davier, A. Snyder, A. Roodman, R. Liu, A. N. Yushkov, A. Lazzaro, D. Su, S. Bettarini, N. De Groot, J. A. McKenna, B. Stugu, J. M. Dorfan, F. Simonetto, T. Pulliam, R. H. Schindler, F. Bucci, M. Dickopp, H. B. Crawley, C. Gatto, R. K. Yamamoto, B. T. Meadows, G. Raven, Fergus Wilson, M. A. Winter, M. Verderi, G. Sciolla, Alessio Sarti, W. Kozanecki, Colin Jessop, R. Prepost, R. Nogowski, E. Paoloni, P. Spradlin, Amir Farbin, A. A. Salnikov, C. D. Buchanan, W. Dunwoodie, C. H. Cheng, S. Petrak, Frank E. Taylor, J. R. Fry, Roland Waldi, F. Ferroni, D. A. Bowerman, F. Brochard, M. Fritsch, S. S. Hertzbach, Y. Groysman, L. Wilden, A. Gaidot, M. T. Ronan, W. Roethel, M. C. Hodgkinson, E. I. Rosenberg, Brandon L. Hartfiel, M. C. Simani, F. Anulli, A. T. Watson, S. Dittongo, T. B. Moore, Shanhui Fan, J. Schwiening, V. Tisserand, Liliana Teodorescu, X. C. Lou, J. J. Walsh, A. M. Rahimi, J. I. Yi, M. D. Sokoloff, C. M. Brown, M. Saleem, T. Hadig, G. Crosetti, Enrico Robutti, U. Mallik, Paul Fraser Harrison, S. Christ, J. P. Lees, A. Olivas, D. N. Brown, B. Franek, R. Kroeger, M. L. Kocian, M. G. Wilson, A. Soha, A. J. Edwards, C. Cartaro, G. P. Gopal, T. Cuhadar-Donszelmann, C. Touramanis, L. Piemontese, S. H. Robertson, S. Emery, N. S. Knecht, Paul Kyberd, R. de Sangro, S. L. Wu, M. Weaver, M. Pioppi, G. S. Abrams, D. Boutigny, G. P. Dubois-Felsmann, R. Baldini-Ferroli, D. A. Roberts, G. Grosdidier, P. Poropat, P. M. Patel, I. Narsky, Ralph Müller-Pfefferkorn, M. Piccolo, B. Cheng, V. E. Blinov, E. Gabathuler, C. T. Day, S. Brunet, Stephen Robert Wagner, J.H. Panetta, W. Bhimji, D. Kirkby, G. Vasseur, T. Held, K. E. Ford, G. D. Lafferty, Marcello Rotondo, H. U. Flaecher, A. Zghiche, F. C. Porter, S. Luitz, Hyun-Chul Kim, R. J. Wilson, F. Di Lodovico, W. H. Toki, L. M. Cremaldi, Bernard Aubert, A. M. Lutz, M. T. Graham, G. Batignani, R. R. Kofler, M. Krishnamurthy, K. R. Schubert, D. E. Wagoner, A. Hauke, D. C. Williams, R. Godang, V. Lombardo, S. Otto, J. W. Lamsa, D. J. Payne, H. Kagan, H. M. Lacker, M. Chao, D. S. Best, H. L. Lynch, U. Nauenberg, Gabriele Simi, C. L. Davis, A. Pompili, G. R. Bonneaud, Matteo Rama, M. Zito, T. R. McMahon, D. W. G. S. Leith, T. Piatenko, W. N. Cottingham, M. P. Kelly, M. Barrett, S. Prell, A. Samuel, R. Gamet, T. Glanzman, A. M. Boyarski, R. F. Schwitters, M. Mandelkern, U. Egede, Jie Zhang, James H Cochran, D. M. Strom, R. N. Cahn, R. Barate, S. Playfer, C. P. O'Grady, K. S. Chaisanguanthum, Silvano Tosi, D. G. Hitlin, P. Rankin, B. Spaan, M. Haire, J. C. Williams, D. B. MacFarlane, A. Soffer, Akram Khan, H. Briand, M. A. Baak, E. Charles, Fabio Cossutti, G. Calderini, P. Wang, C. T. Potter, Mario Giorgi, S. Ye, S. Morganti, T. C. Petersen, R. Ter-Antonyan, R. Aleksan, F. Gallo, B. Dahmes, D. Bettoni, R. Capra, L. Lanceri, Stéphane Plaszczynski, Sridhara Dasu, C. Yeche, A. B. Breon, Nicola Neri, G. Eigen, J. T. Boyd, J. Libby, G. W. Brandenburg, A. W. Borgland, Joseph Izen, B. N. Ratcliff, A. J.R. Weinstein, P. S. Jackson, V. G. Shelkov, H. Koch, R. Schwierz, K. Wang, Walter R. Innes, G. W. Morton, Y. I. Skovpen, E. J. Hill, I. Eschrich, P. E. Kutter, P. K. Behera, T. Allmendinger, R. Messner, T. J. Harrison, Ph Leruste, T. I. Meyer, A. E. Blinov, H. Nicholson, C. C. Young, T. J. Orimoto, W. T. Meyer, Claudio Campagnari, V. Eschenburg, P. Taras, F. Forti, T. S. Mattison, D. A. Sanders, P. Tan, M. H. Schune, G. P. Taylor, C. Hast, D. J. Lange, G. Piredda, A. Dvoretskii, M. Morii, D. D. Altenburg, M. Gaspero, G. Nesom, F. R. Wappler, Patricia R. Burchat, B. Mayer, A. K. Yarritu, Martino Margoni, Sh. Rahatlou, J. P. Coleman, G. Tiozzo, L. Del Buono, F. Sandrelli, R. Eckmann, M. J.J. John, G. Mancinelli, T. Brandt, R. Stroili, H. A. Neal, G. De Nardo, L. M. Mir, C. Lu, D. Judd, S. Yang, K. Goetzen, Francesco Fabozzi, J. L. Harton, G. Lynch, E. Torrence, A. Ryd, P. David, E. P. Solodov, Pierre-Francois Giraud, A. Santroni, Virginia Azzolini, L. Li Gioi, John Allison, A. Hicheur, Nicola Cavallo, Olga Igonkina, P.F. Manfredi, W. T. Ford, Tim Adye, R. D. Kass, J. Schubert, Davide Piccolo, Valerio Re, Markus Cristinziani, V. E. Ozcan, F. X. Yumiceva, G. Blaylock, Yu G. Kolomensky, James R. Wilson, D. Côté, C. A. Heusch, M. Steinke, Andrew Lankford, S. Bailey, E. A. Kravchenko, H. Marsiske, C. Voci, S. F. Ganzhur, Te Latham, U. Langenegger, Crisostomo Sciacca, D. Aston, J. C. Chen, N. I. Geddes, J. M. Gaillard, Sai-Juan Chen, Peter Elmer, G. Wagner, F. Safai Tehrani, M. Bruinsma, W. J. Wisniewski, A. M. Eichenbaum, J. E. Sundermann, Lijun Zhang, S. Passaggio, M. M. Macri, S. J. Sekula, A. Jawahery, Sandrine Laplace, S. D. Foulkes, G. Cibinetto, R. J. Sloane, A. P. Onuchin, A. Chen, B. A. Petersen, C. L. Brown, M. S. Gill, E. E. Elsen, Roberto Covarelli, R. W. Kadel, A. Palano, J. Kroseberg, G. Cavoto, G. Vuagnin, P. Kim, Y. Karyotakis, R. Cowan, R. G. Jacobsen, V. B. Koptchev, A. Hocker, S. Ahmed, D. Gamba, S. Schrenk, E. Chen, Q. H. Guo, D. Dujmic, G. Marchiori, V. Halyo, L. Gladney, R. Faccini, J. A. Kadyk, F. Ferrarotto, F. Le Diberder, Marcella Bona, J. D. Richman, D. Fortin, L. T. Kerth, G. A. Cowan, Roberto Calabrese, Computer Systems, Geometry, (Astro)-Particles Physics, Aubert, B, Barate, R., Boutigny, D., Couderc, F., Gaillard, J.-M., Hicheur, A., Karyotakis, Y., Lees, J.P., Tisserand, V., Zghiche, A., Palano, A., Pompili, A., Chen, J.C., Qi, N.D., Rong, G., Wang, P., Zhu, Y.S., Eigen, G., Ofte, I., Stugu, B., Abrams, G.S., Borgland, Aw., Breon, A.B., Brown, D.N., Button-Shafer, J., Cahn, R.N., Charles, E., Day, C.T., Gill, M.S., Gritsan, A.V., Groysman, Y., Jacobsen, R.G., Kadel, R.W., Kadyk, J., Kerth, L.T., Kolomensky, Y.G., Kukartsev, G., Lynch, G., Mir, L.M., Oddone, P.J., Orimoto, T.J., Pripstein, M., Roe, N.A., Ronan, M.T., Shelkov, V.G., Wenzel, W.A., Barrett, M., Ford, K.E., Harrison, T.J., Hart, A.J., Hawkes, C.M., Morgan, S.E., Watson, A.T., Fritsch, M., Goetzen, K., Held, T., Koch, H., Lewandowski, B., Pelizaeus, M., Steinke, M., Boyd, J.T., Chevalier, N., Cottingham, W.N., Kelly, M.P., Latham, T.E., Wilson, F.F., Cuhadar-Donszelmann, T., Hearty, C., Knecht, N.S., Mattison, T.S., Mckenna, J.A., Thiessen, D., Khan, A., Kyberd, P., Teodorescu, L., Blinov, A.E., Blinov, V.E., Druzhinin, V.P., Golubev, V.B., Ivanchenko, V.N., Kravchenko, E.A., Onuchin, A.P., Serednyakov, S.I., Skovpen, Y.I., Solodov, E.P., Yushkov, A.N., Best, D., Bruinsma, M., Chao, M., Eschrich, I., Kirkby, D., Lankford, A.J., Mandelkern, M., Mommsen, R.K., Roethel, W., Stoker, D.P., Buchanan, C., Hartfiel, B.L., Foulkes, S.D., Gary, J.W., Shen, B.C., Wang, K., del Re, D., Hadavand, H.K., Hill, E.J., Macfarlane, D.B., Paar, H.P., Rahatlou, S., Sharma, V., Berryhill, J.W., Campagnari, C., Dahmes, B., Long, O., Lu, A., Mazur, M.A., Richman, J.D., Verkerke, W., Beck, T.W., Eisner, A.M., Heusch, C.A., Kroseberg, J., Lockman, W.S., Nesom, G., Schalk, T., Schumm, B.A., Seiden, A., Spradlin, P., Williams, D.C., Wilson, M.G., Albert, J., Chen, E., Dubois-Felsmann, G.P., Dvoretskii, A., Hitlin, D.G., Narsky, I., Piatenko, T., Porter, F.C., Ryd, A., Samuel, A., Yang, S., Jayatilleke, S., Mancinelli, G., Meadows, B.T., Sokoloff, M.D., Abe, T., Blanc, F., Bloom, P., Chen, S., Ford, W.T., Nauenberg, U., Olivas, A., Rankin, P., Smith, J.G., Zhang, J., Zhang, L., Chen, A., Harton, J.L., Soffer, A., Toki, W.H., Wilson, R.J., Zeng, Q., Altenburg, D., Brandt, T., Brose, J., Dickopp, M., Feltresi, E., Hauke, A., Lacker, H.M., Müller-Pfefferkorn, R., Nogowski, R., Otto, S., Petzold, A., Schubert, J., Schubert, K.R., Schwierz, R., Spaan, B., Sundermann, J.E., Bernard, D., Bonneaud, G.R., Brochard, F., Grenier, P., Schrenk, S., Thiebaux, C., Vasileiadis, G., Verderi, M., Bard, D.J., Clark, P.J., Lavin, D., Muheim, F., Playfer, S., Xie, Y., Andreotti, M., Azzolini, V., Bettoni, D., Bozzi, C., Calabrese, R., Cibinetto, G., Luppi, E., Negrini, M., Piemontese, L., Sarti, A., Treadwell, E., Anulli, F., Baldini-Ferroli, R., Calcaterra, A., de Sangro, R., Finocchiaro, G., Patteri, P., Peruzzi, I.M., Piccolo, M., Zallo, A., Buzzo, A., Capra, R., Contri, R., Crosetti, G., Lo Vetere, M., Macri, M., Monge, M.R., Passaggio, S., Patrignani, C., Robutti, E., Santroni, A., Tosi, S., Bailey, S., Brandenburg, G., Chaisanguanthum, K.S., Morii, M., Won, E., Dubitzky, R.S., Langenegger, U., Bhimji, W., Bowerman, D.A., Dauncey, P.D., Egede, U., Gaillard, J.R., Morton, G.W., Nash, J.A., Nikolich, M.B., Taylor, G.P., Charles, M.J., Grenier, G.J., Mallik, U., Cochran, J., Crawley, H.B., Lamsa, J., Meyer, W.T., Prell, S., Rosenberg, E.I., Rubin, A.E., Yi, J., Biasini, M., Covarelli, R., Pioppi, M., Davier, M., Giroux, X., Grosdidier, G., Höcker, A., Laplace, S., Le Diberder, F., Lepeltier, V., Lutz, A.M., Petersen, T.C., Plaszczynski, S., Schune, M.H., Tantot, L., Wormser, G., Cheng, C.H., Lange, D.J., Simani, M.C., Wright, D.M., Bevan, A.J., Chavez, C.A., Coleman, J.P., Forster, I.J., Fry, J.R., Gabathuler, E., Gamet, R., Hutchcroft, D.E., Parry, R.J., Payne, D.J., Sloane, R.J., Touramanis, C., Back, J.J., Cormack, C.M., Harrison, P.F., di Lodovico, F., Mohanty, G.B., Brown, C.L., Cowan, G., Flack, R.L., Flaecher, H.U., Green, M.G., Jackson, P.S., Mcmahon, T.R., Ricciardi, S., Salvatore, F., Winter, M.A., Brown, D., Davis, C.L., Allison, J., Barlow, N.R., Barlow, R.J., Hart, P.A., Hodgkinson, M.C., Lafferty, G.D., Lyon, A.J., Williams, J.C., Chen, C., Farbin, A., Hulsbergen, W.D., Jawahery, A., Kovalskyi, D., Lae, C.K., Lillard, V., Roberts, D.A., Blaylock, G., Dallapiccola, C., Flood, K.T., Hertzbach, S.S., Kofler, R., Koptchev, V.B., Moore, T.B., Saremi, S., Staengle, H., Willocq, S., Cowan, R., Sciolla, G., Sekula, S.J., Taylor, F., Yamamoto, R.K., Mangeol, D.J.J., Patel, P.M., Robertson, S.H., Lazzaro, A., Lombardo, V., Palombo, F., Bauer, J.M., Cremaldi, L., Eschenburg, V., Godang, R., Kroeger, R., Reidy, J., Sanders, D.A., Summers, D.J., Zhao, H.W., Brunet, S., Côté, D., Taras, P., Nicholson, H., Cavallo, N., Fabozzi, F., Gatto, C., Lista, L., Monorchio, D., Paolucci, P., Piccolo, D., Sciacca, C., Baak, M., Bulten, H., Raven, G., Snoek, H.L., Wilden, L., Jessop, C.P., Losecco, J.M., Allmendinger, T., Gan, K.K., Honscheid, K., Hufnagel, D., Kagan, H., Kass, R., Pulliam, T., Rahimi, A.M., Ter-Antonyan, R., Wong, Q.K., Brau, J., Frey, R., Igonkina, O., Potter, C.T., Sinev, N.B., Strom, D., Torrence, E., Colecchia, F., Dorigo, A., Galeazzi, F., Margoni, M., Morandin, M., Posocco, M., Rotondo, M., Simonetto, F., Stroili, R., Tiozzo, G., Voci, C., Benayoun, M., Briand, H., Chauveau, J., David, P., de la Vaissière, C., Del Buono, L., Hamon, O., John, M.J.J., Leruste, P., Malcles, J., Ocariz, J., Pivk, M., Roos, L., T'Jampens, S., Therin, G., Manfredi, P.F., Re, V., Behera, P.K., Gladney, L., Guo, Q.H., Panetta, J., Angelini, C., Batignani, G., Bettarini, S., Bondioli, M., Bucci, F., Calderini, G., Carpinelli, M., Forti, F., Giorgi, M.A., Lusiani, A., Marchiori, G., Martinez-Vidal, F., Morganti, M., Neri, N., Paoloni, E., Rama, M., Rizzo, G., Sandrelli, F., Walsh, J., Haire, M., Judd, D., Paick, K., Wagoner, D.E., Danielson, N., Elmer, P., Lau, Y.P., Lu, C., Miftakov, V., Olsen, J., Smith, A.J.S., Telnov, A.V., Bellini, F., Cavoto, G., Faccini, R., Ferrarotto, F., Ferroni, F., Gaspero, M., Li Gioi, L., Mazzoni, M.A., Morganti, S., Pierini, M., Piredda, G., Safai Tehrani, F., Voena, C., Christ, S., Wagner, G., Waldi, R., Adye, T., de Groot, N., Franek, B., Geddes, N.I., Gopal, G.P., Olaiya, E.O., Aleksan, R., Emery, S., Gaidot, A., Ganzhur, S.F., Giraud, P.-F., Hamel de Monchenault, G., Kozanecki, W., Legendre, M., London, G.W., Mayer, B., Schott, G., Vasseur, G., Yèche, C., Zito, M., Purohit, M.V., Weidemann, A.W., Wilson, J.R., Yumiceva, F.X., Aston, D., Bartoldus, R., Berger, N., Boyarski, A.M., Buchmueller, O.L., Claus, R., Convery, M.R., Cristinziani, M., de Nardo, G., Dong, D., Dorfan, J., Dujmic, D., Dunwoodie, W., Elsen, E.E., Fan, S., Field, Rc., Glanzman, T., Gowdy, S.J., Hadig, T., Halyo, V., Hast, C., Hryn'Ova, T., Innes, W.R., Kelsey, M.H., Kim, P., Kocian, M.L., Leith, D.W.G.S., Libby, J., Luitz, S., Luth, V., Lynch, H.L., Marsiske, H., Messner, R., Muller, D.R., O'Grady, C.P., Ozcan, V.E., Perazzo, A., Perl, M., Petrak, S., Ratcliff, B.N., Roodman, A., Salnikov, A.A., Schindler, R.H., Schwiening, J., Simi, G., Snyder, A., Soha, A., Stelzer, J., Su, D., Sullivan, M.K., Va'Vra, J., Wagner, S.R., Weaver, M., Weinstein, A.J.R., Wisniewski, W.J., Wittgen, M., Wright, D.H., Yarritu, A.K., Young, C.C., Burchat, P.R., Edwards, A.J., Meyer, T.I., Petersen, B.A., Roat, C., Ahmed, S., Alam, M.S., Ernst, J.A., Saeed, M.A., Saleem, M., Wappler, F.R., Bugg, W., Krishnamurthy, M., Spanier, S.M., Eckmann, R., Kim, H., Ritchie, J.L., Satpathy, A., Schwitters, R.F., Izen, J.M., Kitayama, I., Lou, X.C., Ye, S., Bianchi, F., Bona, M., Gallo, F., Gamba, D., Bosisio, L., Cartaro, C., Cossutti, F., della Ricca, G., Dittongo, S., Grancagnolo, S., Lanceri, L., Poropat, P., Vitale, L., Vuagnin, G., Panvini, R.S., Banerjee, S., Brown, C.M., Fortin, D., Jackson, P.D., Kowalewski, R., Roney, J.M., Sobie, R.J., Band, H.R., Cheng, B., Dasu, S., Datta, M., Eichenbaum, A.M., Graham, M., Hollar, J.J., Johnson, J.R., Kutter, P.E., Li, H., Liu, R., Mihalyi, A., Mohapatra, A.K., Pan, Y., Prepost, R., Tan, P., von Wimmersperg-Toeller, J.H., Wu, J., Wu, S.L., Yu, Z., Greene, M.G., Neal, H., Bosisio, Luciano, DELLA RICCA, Giuseppe, Lanceri, Livio, Poropat, Paolo, Vitale, Lorenzo, Aubert, B., Gaillard, J. M., Lees, J., Chen, J., Qi, N., Zhu, Y., Abrams, G., Borgland, A., Breon, A., Button Shafer, J., Cahn, R., Day, C., Gill, M., Gritsan, A., Jacobsen, R., Kadel, R., Kerth, L., Kolomensky, Y. u., Mir, L., Oddone, P., Orimoto, T., Roe, N., Ronan, M., Shelkov, V., Wenzel, W., Ford, K., Harrison, T., Hart, A., Hawkes, C., Morgan, S., Watson, A., Boyd, J., Cottingham, W., Kelly, M., Latham, T., Wilson, F., Cuhadar Donszelmann, T., Knecht, N., Mattison, T., Mckenna, J., Blinov, A., Blinov, V., Druzhinin, V., Golubev, V., Ivanchenko, V., Kravchenko, E., Onuchin, A., Serednyakov, S., Skovpen, Y. u., Solodov, E., Yushkov, A., Lankford, A., Mommsen, R., Stoker, D., Hartfiel, B., Foulkes, S., Gary, J., Shen, B., Hadavand, H., Hill, E., Macfarlane, D., Paar, H., Rahatlou, S. h., Berryhill, J., Mazur, M., Richman, J., Beck, T., Eisner, A., Heusch, C., Lockman, W., Schumm, B., Williams, D., Wilson, M., Dubois Felsmann, G., Hitlin, D., Porter, F., Meadows, B., Sokoloff, M., Ford, W., Smith, J., Harton, J., Toki, W., Wilson, R., Lacker, H., Müller Pfefferkorn, R., Schubert, K., Sundermann, J., Bonneaud, G., Thiebaux, C. h., Bard, D., Clark, P., Baldini Ferroli, R., Peruzzi, I., Monge, M., Chaisanguanthum, K., Dubitzky, R., Bowerman, D., Dauncey, P., Gaillard, J., Morton, G., Nash, J., Nikolich, M., Taylor, G., Charles, M., Grenier, G., Crawley, H., Meyer, W., Rosenberg, E., Rubin, A., Lutz, A., Petersen, T., Schune, M., Cheng, C., Lange, D., Simani, M., Wright, D., Bevan, A., Chavez, C., Coleman, J., Forster, I., Fry, J., Hutchcroft, D., Parry, R., Payne, D., Sloane, R., Back, J., Cormack, C., Harrison, P., Di Lodovico, F., Mohanty, G., Brown, C., Flack, R., Flaecher, H., Green, M., Jackson, P., Mcmahon, T., Winter, M., Davis, C., Barlow, N., Barlow, R., Hart, P., Hodgkinson, M., Lafferty, G., Lyon, A., Williams, J., Hulsbergen, W., Lae, C., Roberts, D., Flood, K., Hertzbach, S., Koptchev, V., Moore, T., Sekula, S., Yamamoto, R., Mangeol, D., Patel, P., Robertson, S., Bauer, J., Sanders, D., Summers, D., Zhao, H., Sciacca, Crisostomo, Snoek, H., Jessop, C., Losecco, J., Gan, K., Rahimi, A., Ter Antonyan, R., Wong, Q., Potter, C., Sinev, N., de la Vaissière, C. h., John, M., Leruste, P. h., Manfredi, P., Behera, P., Guo, Q., Giorgi, M., Martinez Vidal, F., Wagoner, D., Lau, Y., Smith, A., Telnov, A., Mazzoni, M., De Groot, N., Geddes, N., Gopal, G., Olaiya, E., Ganzhur, S., Giraud, P. F., London, G., Yèche, C. h., Purohit, M., Weidemann, A., Wilson, J., Yumiceva, F., Boyarski, A., Buchmueller, O., Convery, M., DE NARDO, Guglielmo, Elsen, E., Field, R., Gowdy, S., Innes, W., Kelsey, M., Kocian, M., Leith, D., Lynch, H., Muller, D., O'Grady, C., Ozcan, V., Ratcliff, B., Salnikov, A., Schindler, R., Sullivan, M., Wagner, S., Weinstein, A., Wisniewski, W., Yarritu, A., Young, C., Burchat, P., Edwards, A., Meyer, T., Petersen, B., Alam, M., Ernst, J., Saeed, M., Wappler, F., Spanier, S., Ritchie, J., Schwitters, R., Izen, J., Lou, X., Della Ricca, G., Panvini, R., Banerjee, S. w., Roney, J., Sobie, R., Band, H., Eichenbaum, A., Hollar, J., Johnson, J., Kutter, P., Mohapatra, A., von Wimmersperg Toeller, J., Wu, S., Greene, M., Barate, R, Boutigny, D, Couderc, F, Gaillard, J, Hicheur, A, Karyotakis, Y, Lees, J, Tisserand, V, Zghiche, A, Palano, A, Pompili, A, Chen, J, Qi, N, Rong, G, Wang, P, Zhu, Y, Eigen, G, Ofte, I, Stugu, B, Abrams, G, Borgland, A, Breon, A, Brown, D, Button Shafer, J, Cahn, R, Charles, E, Day, C, Gill, M, Gritsan, A, Groysman, Y, Jacobsen, R, Kadel, R, Kadyk, J, Kerth, L, Kolomensky, Y, Kukartsev, G, Lynch, G, Mir, L, Oddone, P, Orimoto, T, Pripstein, M, Roe, N, Ronan, M, Shelkov, V, Wenzel, W, Barrett, M, Ford, K, Harrison, T, Hart, A, Hawkes, C, Morgan, S, Watson, A, Fritsch, M, Goetzen, K, Held, T, Koch, H, Lewandowski, B, Pelizaeus, M, Steinke, M, Boyd, J, Chevalier, N, Cottingham, W, Kelly, M, Latham, T, Wilson, F, Cuhadar Donszelmann, T, Hearty, C, Knecht, N, Mattison, T, Mckenna, J, Thiessen, D, Khan, A, Kyberd, P, Teodorescu, L, Blinov, A, Blinov, V, Druzhinin, V, Golubev, V, Ivanchenko, V, Kravchenko, E, Onuchin, A, Serednyakov, S, Skovpen, Y, Solodov, E, Yushkov, A, Best, D, Bruinsma, M, Chao, M, Eschrich, I, Kirkby, D, Lankford, A, Mandelkern, M, Mommsen, R, Roethel, W, Stoker, D, Buchanan, C, Hartfiel, B, Foulkes, S, Gary, J, Shen, B, Wang, K, del Re, D, Hadavand, H, Hill, E, Macfarlane, D, Paar, H, Rahatlou, S, Sharma, V, Berryhill, J, Campagnari, C, Dahmes, B, Long, O, Lu, A, Mazur, M, Richman, J, Verkerke, W, Beck, T, Eisner, A, Heusch, C, Kroseberg, J, Lockman, W, Nesom, G, Schalk, T, Schumm, B, Seiden, A, Spradlin, P, Williams, D, Wilson, M, Albert, J, Chen, E, Dubois Felsmann, G, Dvoretskii, A, Hitlin, D, Narsky, I, Piatenko, T, Porter, F, Ryd, A, Samuel, A, Yang, S, Jayatilleke, S, Mancinelli, G, Meadows, B, Sokoloff, M, Abe, T, Blanc, F, Bloom, P, Chen, S, Ford, W, Nauenberg, U, Olivas, A, Rankin, P, Smith, J, Zhang, J, Zhang, L, Chen, A, Harton, J, Soffer, A, Toki, W, Wilson, R, Zeng, Q, Altenburg, D, Brandt, T, Brose, J, Dickopp, M, Feltresi, E, Hauke, A, Lacker, H, Muller Pfefferkorn, R, Nogowski, R, Otto, S, Petzold, A, Schubert, J, Schubert, K, Schwierz, R, Spaan, B, Sundermann, J, Bernard, D, Bonneaud, G, Brochard, F, Grenier, P, Schrenk, S, Thiebaux, C, Vasileiadis, G, Verderi, M, Bard, D, Clark, P, Lavin, D, Muheim, F, Playfer, S, Xie, Y, Andreotti, M, Azzolini, V, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Luppi, E, Negrini, M, Piemontese, L, Sarti, A, Treadwell, E, Anulli, F, Baldini Ferroli, R, Calcaterra, A, de Sangro, R, Finocchiaro, G, Patteri, P, Peruzzi, I, Piccolo, M, Zallo, A, Buzzo, A, Capra, R, Contri, R, Crosetti, G, Lo Vetere, M, Macri, M, Monge, M, Passaggio, S, Patrignani, C, Robutti, E, Santroni, A, Tosi, S, Bailey, S, Brandenburg, G, Chaisanguanthum, K, Morii, M, Won, E, Dubitzky, R, Langenegger, U, Bhimji, W, Bowerman, D, Dauncey, P, Egede, U, Morton, G, Nash, J, Nikolich, M, Taylor, G, Charles, M, Grenier, G, Mallik, U, Cochran, J, Crawley, H, Lamsa, J, Meyer, W, Prell, S, Rosenberg, E, Rubin, A, Yi, J, Biasini, M, Covarelli, R, Pioppi, M, Davier, M, Giroux, X, Grosdidier, G, Hocker, A, Laplace, S, Le Diberder, F, Lepeltier, V, Lutz, A, Petersen, T, Plaszczynski, S, Schune, M, Tantot, L, Wormser, G, Cheng, C, Lange, D, Simani, M, Wright, D, Bevan, A, Chavez, C, Coleman, J, Forster, I, Fry, J, Gabathuler, E, Gamet, R, Hutchcroft, D, Parry, R, Payne, D, Sloane, R, Touramanis, C, Back, J, Cormack, C, Harrison, P, Di Lodovico, F, Mohanty, G, Brown, C, Cowan, G, Flack, R, Flaecher, H, Green, M, Jackson, P, Mcmahon, T, Ricciardi, S, Salvatore, F, Winter, M, Davis, C, Allison, J, Barlow, N, Barlow, R, Hart, P, Hodgkinson, M, Lafferty, G, Lyon, A, Williams, J, Chen, C, Farbin, A, Hulsbergen, W, Jawahery, A, Kovalskyi, D, Lae, C, Lillard, V, Roberts, D, Blaylock, G, Dallapiccola, C, Flood, K, Hertzbach, S, Kofler, R, Koptchev, V, Moore, T, Saremi, S, Staengle, H, Willocq, S, Cowan, R, Sciolla, G, Sekula, S, Taylor, F, Yamamoto, R, Mangeol, D, Patel, P, Robertson, S, Lazzaro, A, Lombardo, V, Palombo, F, Bauer, J, Cremaldi, L, Eschenburg, V, Godang, R, Kroeger, R, Reidy, J, Sanders, D, Summers, D, Zhao, H, Brunet, S, Cote, D, Taras, P, Nicholson, H, Cavallo, N, Fabozzi, F, Gatto, C, Lista, L, Monorchio, D, Paolucci, P, Piccolo, D, Sciacca, C, Baak, M, Bulten, H, Raven, G, Snoek, H, Wilden, L, Jessop, C, Losecco, J, Allmendinger, T, Gan, K, Honscheid, K, Hufnagel, D, Kagan, H, Kass, R, Pulliam, T, Rahimi, A, Ter Antonyan, R, Wong, Q, Brau, J, Frey, R, Igonkina, O, Potter, C, Sinev, N, Strom, D, Torrence, E, Colecchia, F, Dorigo, A, Galeazzi, F, Margoni, M, Morandin, M, Posocco, M, Rotondo, M, Simonetto, F, Stroili, R, Tiozzo, G, Voci, C, Benayoun, M, Briand, H, Chauveau, J, David, P, de la Vaissiere, C, Del Buono, L, Hamon, O, John, M, Leruste, P, Malcles, J, Ocariz, J, Pivk, M, Roos, L, T'Jampens, S, Therin, G, Manfredi, P, Re, V, Behera, P, Gladney, L, Guo, Q, Panetta, J, Angelini, C, Batignani, G, Bettarini, S, Bondioli, M, Bucci, F, Calderini, G, Carpinelli, M, Forti, F, Giorgi, M, Lusiani, A, Marchiori, G, Martinez Vidal, F, Morganti, M, Neri, N, Paoloni, E, Rama, M, Rizzo, G, Sandrelli, F, Walsh, J, Haire, M, Judd, D, Paick, K, Wagoner, D, Danielson, N, Elmer, P, Lau, Y, Lu, C, Miftakov, V, Olsen, J, Smith, A, Telnov, A, Bellini, F, Cavoto, G, Faccini, R, Ferrarotto, F, Ferroni, F, Gaspero, M, Li Gioi, L, Mazzoni, M, Morganti, S, Pierini, M, Piredda, G, Tehrani, F, Voena, C, Christ, S, Wagner, G, Waldi, R, Adye, T, De Groot, N, Franek, B, Geddes, N, Gopal, G, Olaiya, E, Aleksan, R, Emery, S, Gaidot, A, Ganzhur, S, Giraud, P, de Monchenault, G, Kozanecki, W, Legendre, M, London, G, Mayer, B, Schott, G, Vasseur, G, Yeche, C, Zito, M, Purohit, M, Weidemann, A, Wilson, J, Yumiceva, F, Aston, D, Bartoldus, R, Berger, N, Boyarski, A, Buchmueller, O, Claus, R, Convery, M, Cristinziani, M, De Nardo, G, Dong, D, Dorfan, J, Dujmic, D, Dunwoodie, W, Elsen, E, Fan, S, Field, R, Glanzman, T, Gowdy, S, Hadig, T, Halyo, V, Hast, C, Hryn'Ova, T, Innes, W, Kelsey, M, Kim, P, Kocian, M, Leith, D, Libby, J, Luitz, S, Luth, V, Lynch, H, Marsiske, H, Messner, R, Muller, D, O'Grady, C, Ozcan, V, Perazzo, A, Perl, M, Petrak, S, Ratcliff, B, Roodman, A, Salnikov, A, Schindler, R, Schwiening, J, Simi, G, Snyder, A, Soha, A, Stelzer, J, Su, D, Sullivan, M, Va'Vra, J, Wagner, S, Weaver, M, Weinstein, A, Wisniewski, W, Wittgen, M, Yarritu, A, Young, C, Burchat, P, Edwards, A, Meyer, T, Petersen, B, Roat, C, Ahmed, S, Alam, M, Ernst, J, Saeed, M, Saleem, M, Wappler, F, Bugg, W, Krishnamurthy, M, Spanier, S, Eckmann, R, Kim, H, Ritchie, J, Satpathy, A, Schwitters, R, Izen, J, Kitayama, I, Lou, X, Ye, S, Bianchi, F, Bona, M, Gallo, F, Gamba, D, Bosisio, L, Cartaro, C, Cossutti, F, Della Ricca, G, Dittongo, S, Grancagnolo, S, Lanceri, L, Poropat, P, Vitale, L, Vuagnin, G, Panvini, R, Banerjee, S, Fortin, D, Kowalewski, R, Roney, J, Sobie, R, Band, H, Cheng, B, Dasu, S, Datta, M, Eichenbaum, A, Graham, M, Hollar, J, Johnson, J, Kutter, P, Li, H, Liu, R, Mihalyi, A, Mohapatra, A, Pan, Y, Prepost, R, Tan, P, von Wimmersperg Toeller, J, Wu, J, Wu, S, Yu, Z, Greene, M, and Neal, H
Subjects: Optimization, Particle physics, Lepton-flavor violating (LFV), Electron–positron annihilation, BABAR, Charged particle, General Physics and Astronomy, Standard model (SM), Lambda baryon, 01 natural sciences, PARTICLE PHYSICS, PEP2, High Energy Physics - Experiment, NO, Nuclear physics, Silicon microstrip detector, 0103 physical sciences, 010306 general physics, DETECTOR, SLAC, Flavor, Probability, Physics, Neutral current, 010308 nuclear & particles physics, Energy dissipation, Flavor-changing neutral current, Colliding beam accelerator, Microstrip device, HEP, Flavor-changing neutral current (FCNC), Drift chamber, High Energy Physics::Experiment, Particle detector, Lepton
Abstract: We report on a search for the flavor-changing neutral current decays $\Dz\to e^+e^-$ and $\Dz\to\mu^+\mu^-$, and the lepton-flavor violating decay $\Dz\to e^\pm\mu^\mp$. The measurement is based on $122 {fb}^{-1}$ of data collected by the \babar detector at the PEP-II asymmetric $e^+e^-$ collider. No evidence is found for any of the decays. The upper limits on the branching fractions, at the 90 % confidence level, are $1.2\times 10^{-6}$ for $\Dz\to e^+e^-$, $1.3\times 10^{-6}$ for $\Dz\to\mu^+\mu^-$, and $8.1\times 10^{-7}$ for $\Dz\to e^\pm\mu^\mp$., Comment: Minor changes of the text and reference for the publication
Published: 2016

50. Tests ofCPTsymmetry inB0−B¯0mixing and inB0→cc¯K0decays

Author: C. Hearty, A. Roodman, D. J. Summers, R. Cenci, A. G. Denig, A. Zallo, E. Fioravanti, L. Vitale, Roland Waldi, F. Martinez-Vidal, Dominik Müller, A. M. Eisner, F. Ferroni, Tim Adye, R. D. Kass, M. Fritsch, H. Ahmed, Paul Fraser Harrison, Eleonora Luppi, M. V. Purohit, L. M. Cremaldi, F. Di Lodovico, Stephen Robert Wagner, J. Albert, W. Gradl, S. H. Robertson, J. Ocariz, D. J. Payne, R. Godang, F. Simonetto, L. Lanceri, Herbert Koch, J. Dorfan, B. Echenard, K. Griessinger, Peter S. Kim, D. Bernard, F. Forti, F. De Mori, D. G. Hitlin, E. Gabathuler, Abner Soffer, Gabriele Simi, B. N. Ratcliff, Florian Urs Bernlochner, F. Palombo, T. Lueck, W. R. Innes, F. C. Porter, C. L. Davis, Maurizio Biasini, T. S. Mattison, J. L. Ritchie, E. Ben-Haim, S. Luitz, S. I. Serednyakov, R. Stroili, P. Taras, Z. C. Huard, V. E. Blinov, M. Rotondo, N. Arnaud, M. Bomben, Nicola Neri, G. R. Bonneaud, C. Hast, D. J. Lange, G. Piredda, X. C. Lou, J. M. Roney, Owen Rosser Long, G. De Nardo, B. G. Pushpawela, P. Ongmongkolkul, W. Panduro Vazquez, J. P. Coleman, A. Filippi, F. Anulli, Giulia Casarosa, M. Ebert, K. R. Schubert, C. H. Cheng, J. A. Ernst, Roger Barlow, Martino Margoni, Alessandro Gaz, J. G. Smith, R. Y. So, M. Röhrken, G. J. King, T. J. Gershon, G. Wormser, G. Rizzo, M. Rama, J. Va’vra, R. de Sangro, S. L. Wu, A. M. Rossi, M. Chrzaszcz, C. Voß, J. A. McKenna, G. Calderini, R. Cowan, Joseph Izen, S. Bettarini, T. Schroeder, James R. Wilson, A. P. Onuchin, L. Sun, R. C. Field, Elisa Manoni, Adrian John Bevan, N. Tasneem, M. Heß, Alessandro Pilloni, Yu. I. Skovpen, S. Martellotti, E. Paoloni, I. M. Peruzzi, W. Dunwoodie, G. Finocchiaro, D. Gamba, V. Luth, D. R. Peimer, M. Verderi, Aidan Randle-Conde, M. S. Alam, E. A. Kravchenko, Andrei Gritsan, G. Eigen, Crisostomo Sciacca, D. Aston, J. J. Walsh, M. T. Graham, J. P. Lees, F. F. Wilson, F. Bianchi, I. M. Nugent, D. N. Brown, S. Dittrich, Sw. Banerjee, Roberto Calabrese, U. Mallik, S. Prell, Stephen Sekula, S. Emery, N. Guttman, M. Piccolo, E. P. Solodov, T. E. Latham, M. Carpinelli, B. Oberhof, James H Cochran, V. Poireau, T. S. Miyashita, D. S. Chao, C. Bozzi, G. D. Lafferty, K. Honscheid, G. Marchiori, G. Batignani, A. Oyanguren, R. Kowalewski, M. Davier, J. W. Gary, K. Yu. Todyshev, M. Posocco, D. W. G. S. Leith, V. Santoro, S. Akar, C. Touramanis, H. A. Neal, R. Cheaib, J. Chauveau, O. Grünberg, A. Lusiani, V. P. Druzhinin, Yu G. Kolomensky, T. Leddig, D. Bettoni, W. S. Lockman, A. R. Buzykaev, J. M. LoSecco, A. Beaulieu, C. Cartaro, B. Dey, M. Bellis, M. R. Convery, I. Garzia, R. F. Schwitters, C. Patrignani, V. Tisserand, C. H. Chen, S. M. Spanier, R. Faccini, F. Ferrarotto, A. J. Lankford, F. Le Diberder, Douglas Wright, G. A. Cowan, V. B. Golubev, A. Palano, A. Calcaterra, David Hutchcroft, P. Patteri, A. M. Lutz, W. J. Wisniewski, S. Passaggio, C. Bünger, J. Kim, A. Jawahery, G. Cibinetto, R. Gorodeisky, D. A. Roberts, A. Hafner, E. M. T. Puccio, D. B. MacFarlane, B. T. Meadows, G. Raven, M. D. Sokoloff, E. Grauges, Mario Giorgi, P. R. Burchat, Colin Jessop, R. Prepost, G. Vasseur, R. Sacco, K. T. Flood, A. J.S. Smith, B. Bhuyan, B. G. Fulsom, and M. K. Sullivan
Subjects: Physics, 010308 nuclear & particles physics, CPT symmetry, Electron–positron annihilation, 0103 physical sciences, Analytical chemistry, BaBar experiment, 010306 general physics, 01 natural sciences, Mixing (physics), Bar (unit)
Abstract: Using the eight time dependences for the decays Upsilon(4S)-> B0 B0bar -> fj fk with the dacay into a flavor-specific state fj = ell+- X before or after the decay into a CP eigenstate fk = c cbar KS,KL, as measured by the BABAR experiment, we determine the three CPT-sensitive parameters Re(z) and Im(z) in B0-B0bar mixing and |Abar/A| in B0 -> c cbar K0 decays. We find Im(z) = 0.010 +- 0.030 +- 0.013, Re(z) = -0.065 +- 0.028 +- 0.014, and |Abar/A| = 0.999 +- 0.023 +- 0.017, in agreement with CPT symmetry.
Published: 2016

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