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349 results on '"Bauer C."'

1. Erratum: First Search for Bosonic Superweakly Interacting Massive Particles with Masses up to 1 MeV/c2 with GERDA [Phys. Rev. Lett. 125, 011801 (2020)

Author: Agostini, M., Bakalyarov, A., Balata, M., Barabanov, I., Baudis, L., Bauer, C., Bellotti, E., Belogurov, S., Bettini, A., Bezrukov, L., Borowicz, D., Bossio, E., Bothe, V., Brudanin, V., Brugnera, R., Caldwell, A., Cattadori, C., Chernogorov, A., Comellato, T., D’Andrea, V., Demidova, E., Di Marco, N., Doroshkevich, E., Egorov, V., Fischer, F., Fomina, M., Gangapshev , A., Garfagnini, A., Gooch, C., Grabmayr, P., Gurentsov, V., Gusev, K., Hakenmüller, J., Hemmer, S., Hiller, R., Hofmann, W., Hult, M., Inzhechik, L., Janicskó Csáthy, J., Jochum, J., Junker, M., Kazalov, V., Kermaïdic, Y., Khushbakht, H., Kihm, T., Kirpichnikov, I., Klimenko, A., Kneißl, R., Knöpfle, K., Kochetov, O., Kornoukhov, V., Krause, P., Kuzminov, V., Laubenstein, M., Lazzaro, A., Lindner, M., Lippi, I., Lubashevskiy, A., Lubsandorzhiev, B., Lutter, G., Macolino, C., Majorovits, B., Maneschg, W., Miloradovic, M., Mingazheva, R., Misiaszek, M., Moseev, P., Nemchenok, I., Panas, K., Pandola, L., Pelczar, K., Pertoldi, L., Piseri, P., Pullia, A., Ransom, C., Rauscher, L., Riboldi, S., Rumyantseva, N., Sada, C., Salamida, F., Schönert, S., Schreiner, J., Schütt, M., Schütz, A., Schulz, O., Schwarz, M., Schwingenheuer, B., Selivanenko, O., Shevchik, E., Shirchenko, M., Simgen, H., Smolnikov, A., Stukov, D., Vasenko, A., Veresnikova, A., Vignoli, C., von Sturm, K., Wester, T., Wiesinger, C., Wojcik, M., Yanovich, E., Zatschler, B., Zhitnikov, I., Zhukov, S., Zinatulina, D., Zschocke, A., Zsigmond, A., Zuber, K., Zuzel, G., and GERDA Collaboration
Subjects: GERDA - Abteilung Hinton
Published: 2022

2. Die Borna-Virus-Enzephalitis als Differenzialdiagnose zur seronegativen Autoimmunenzephalitis

Author: Meier, H., Bauer, C., Finkenzeller, W., Nentwich, J., Städt, M., Steininger, P., Korn, K., Essner, A., and Erbguth, F.
Subjects: Psychiatry and Mental health, Neurology, Neurology (clinical), General Medicine, Kurzbeiträge
Published: 2022

3. Search for exotic physics in double-β decays with GERDA Phase II

Author: Agostini, M., Alexander, A., Araujo, G., Bakalyarov, A. M., Balata, M., Barabanov, I., Baudis, L., Bauer, C., Belogurov, S., Bettini, A., Bezrukov, L., Biancacci, V., Bossio, E., Bothe, V., Brugnera, R., Caldwell, A., Calgaro, S., Cattadori, C., Chernogorov, A., Comellato, T., D'Andrea, V., Demidova, E. V., Di Giacinto, A., Di Marco, N., Doroshkevich, E., Fischer, F., Fomina, M., Gangapshev, A., Garfagnini, A., Gooch, C., Grabmayr, P., Gurentsov, V., Gusev, K., Hakenmuller, J., Hemmer, S., Hofmann, W., Huang, J., Hult, M., Inzhechik, L. V., Janicsko Csathy, J., Jochum, J., Junker, M., Kazalov, V., Kermaidic, Y., Khushbakht, H., Kihm, T., Kilgus, K., Kirpichnikov, I. V., Klimenko, A., Knopfle, K. T., Kochetov, O., Kornoukhov, V. N., Krause, P., Kuzminov, V. V., Laubenstein, M., Lindner, M., Lippi, I., Lubashevskiy, A., Lubsandorzhiev, B., Lutter, G., Macolino, C., Majorovits, B., Maneschg, W., Manzanillas, L., Marshall, G., Miloradovic, M., Mingazheva, R., Misiaszek, M., Morella, M., Muller, Y., Nemchenok, I., Pandola, L., Pelczar, K., Pertoldi, L., Piseri, P., Pullia, A., Ransom, C., Rauscher, L., Redchuk, M., Riboldi, S., Rumyantseva, N., Sada, C., Sailer, S., Salamida, F., Schonert, S., Schreiner, J., Schutt, M., Schutz, A. -K., Schulz, O., Schwarz, M., Schwingenheuer, B., Selivanenko, O., Shevchik, E., Shirchenko, M., Shtembari, L., Simgen, H., Smolnikov, A., Stukov, D., Vasenko, A. A., Veresnikova, A., Vignoli, C., von Sturm, K., Wester, T., Wiesinger, C., Wojcik, M., Yanovich, E., Zatschler, B., Zhitnikov, I., Zhukov, S. V., Zinatulina, D., Zschocke, A., Zsigmond, A. J., Zuber, K., Zuzel, G., and The GERDA Collaboration
Subjects: High Energy Physics - Experiment (hep-ex), particle physics - cosmology connection, double beta decay, neutrino properties, particle physics - cosmology connection, GERDA - Abteilung Hinton, FOS: Physical sciences, double beta decay, Astronomy and Astrophysics, Nuclear Experiment (nucl-ex), paper, neutrino properties, ddc
Abstract: A search for Beyond the Standard Model double-β decay modes of 76Ge has been performed with data collected during the Phase II of the GERmanium Detector Array (Gerda) experiment, located at the Laboratori Nazionali del Gran Sasso of INFN (Italy). Improved limits on the decays involving Majorons have been obtained, compared to previous experiments with 76Ge, with half-life values on the order of 1023 yr. For the first time with 76Ge, limits on Lorentz invariance violation effects in double-β decay have been obtained. The isotropic coefficient åof (3), which embeds Lorentz violation in double-β decay, has been constrained at the order of 10-6 GeV. We also set the first experimental limits on the search for light exotic fermions in double-β decay, including sterile neutrinos.
Published: 2022

4. Liquid argon light collection and veto modeling in GERDA Phase II

Author: GERDA collaboration, Agostini, M., Alexander, A., Araujo, G., Bakalyarov, A., Balata, M., Barabanov, I., Baudis, L., Bauer, C., Belogurov, S., Bettini, A., Bezrukov, L., Biancacci, V., Bossio, E., Bothe, V., Brugnera, R., Caldwell, A., Calgaro, S., Cattadori, C., Chernogorov, A., Chiu, P., Comellato, T., D'Andrea, V., Demidova, E., Di Giacinto, A., Di Marco, N., Doroshkevich, E., Fischer, F., Fomina, M., Gangapshev, A., Garfagnini, A., Gooch, C., Grabmayr, P., Gurentsov, V., Gusev, K., Hakenmüller, J., Hemmer, S., Hofmann, W., Hult, M., Inzhechik, L., Csáthy, J., Jochum, J., Junker, M., Kazalov, V., Kermaïdic, Y., Khushbakht, H., Kihm, T., Kilgus, K., Kirpichnikov, I., Klimenko, A., Knöpfle, K., Kochetov, O., Kornoukhov, V., Krause, P., Kuzminov, V., Laubenstein, M., Lehnert, B., Lindner, M., Lippi, I., Lubashevskiy, A., Lubsandorzhiev, B., Lutter, G., Macolino, C., Majorovits, B., Maneschg, W., Manzanillas, L., Marshall, G., Miloradovic, M., Mingazheva, R., Misiaszek, M., Morella, M., Müller, Y., Nemchenok, I., Neuberger, M., Pandola, L., Pelczar, K., Pertoldi, L., Piseri, P., Pullia, A., Rauscher, L., Redchuk, M., Riboldi, S., Rumyantseva, N., Sada, C., Sailer, S., Salamida, F., Schönert, S., Schreiner, J., Schütt, M., Schütz, A., Schulz, O., Schwarz, M., Schwingenheuer, B., Selivanenko, O., Shevchik, E., Shirchenko, M., Shtembari, L., Simgen, H., Smolnikov, A., Stukov, D., Sullivan, S., Vasenko, A., Veresnikova, A., Vignoli, C., von Sturm, K., Wegmann, A., Wester, T., Wiesinger, C., Wojcik, M., Yanovich, E., Zatschler, B., Zhitnikov, I., Zhukov, S., Zinatulina, D., Zschocke, A., Zsigmond, A., Zuber, K., and Zuzel, G.
Abstract: The ability to detect liquid argon scintillation light from within a denselypacked high-purity germanium detector array allowed the GERDA experiment toreach an exceptionally low background rate in the search for neutrinolessdouble beta decay of $^{76}$Ge. Proper modeling of the light propagationthroughout the experimental setup, from any origin in the liquid argon volumeto its eventual detection by the novel light read-out system, provides insightinto the rejection capability and is a necessary ingredient to obtain robustbackground predictions. In this paper, we present a model of the GERDA liquidargon veto, as obtained by Monte Carlo simulations and constrained bycalibration data, and highlight its application for background decomposition.
Published: 2022

5. Pulse shape analysis in Gerda Phase II

Author: The GERDA collaboration, Agostini, M., Araujo, G., Bakalyarov, A. M., Balata, M., Barabanov, I., Baudis, L., Bauer, C., Bellotti, E., Belogurov, S., Bettini, A., Bezrukov, L., Biancacci, V., Bossio, E., Bothe, V., Brudanin, V., Brugnera, R., Caldwell, A., Cattadori, C., Chernogorov, A., Comellato, T., D'Andrea, V., Demidova, E. V., Di Marco, N., Doroshkevich, E., Fischer, F., Fomina, M., Gangapshev, A., Garfagnini, A., Gooch, C., Grabmayr, P., Gurentsov, V., Gusev, K., Hakenmüller, J., Hemmer, S., Hiller, R., Hofmann, W., Huang, J., Hult, M., Inzhechik, L. V., Csáthy, J. Janicskó, Jochum, J., Junker, M., Kazalov, V., Kermaïdic, Y., Khushbakht, H., Kihm, T., Kilgus, K., Kirsch, A., Kirpichnikov, I. V., Klimenko, A., Knöpfle, K. T., Kochetov, O., Kornoukhov, V. N., Krause, P., Kuzminov, V. V., Laubenstein, M., Lazzaro, A., Lindner, M., Lippi, I., Lubashevskiy, A., Lubsandorzhiev, B., Lutter, G., Macolino, C., Majorovits, B., Maneschg, W., Manzanillas, L., Miloradovic, M., Mingazheva, R., Misiaszek, M., Müller, Y., Nemchenok, I., Panas, K., Pandola, L., Pelczar, K., Pertoldi, L., Piseri, P., Pullia, A., Ransom, C., Rauscher, L., Redchuk, M., Riboldi, S., Rumyantseva, N., Sada, C., Salamida, F., Schönert, S., Schreiner, J., Schütt, M., Schütz, A. -K., Schulz, O., Schwarz, M., Schwingenheuer, B., Selivanenko, O., Shevchik, E., Shirchenko, M., Shtembari, L., Simgen, H., Smolnikov, A., Stukov, D., Vasenko, A. A., Veresnikova, A., Vignoli, C., von Sturm, K., Wagner, V., Wester, T., Wiesinger, C., Wojcik, M., Yanovich, E., Zatschler, B., Zhitnikov, I., Zhukov, S. V., Zinatulina, D., Zschocke, A., Zsigmond, A. J., Zuber, K., and Zuzel, G.
Subjects: Technology, Physics - Instrumentation and Detectors, Physics and Astronomy (miscellaneous), FOS: Physical sciences, Instrumentation and Detectors (physics.ins-det), Nuclear Experiment (nucl-ex), Nuclear Experiment, Engineering (miscellaneous), ddc:600
Abstract: The GERmanium Detector Array (Gerda) collaboration searched for neutrinoless double-$$\beta $$ β decay in $$^{76}$$ 76 Ge using isotopically enriched high purity germanium detectors at the Laboratori Nazionali del Gran Sasso of INFN. After Phase I (2011–2013), the experiment benefited from several upgrades, including an additional active veto based on LAr instrumentation and a significant increase of mass by point-contact germanium detectors that improved the half-life sensitivity of Phase II (2015–2019) by an order of magnitude. At the core of the background mitigation strategy, the analysis of the time profile of individual pulses provides a powerful topological discrimination of signal-like and background-like events. Data from regular $$^{228}$$ 228 Th calibrations and physics data were both considered in the evaluation of the pulse shape discrimination performance. In this work, we describe the various methods applied to the data collected in Gerda Phase II corresponding to an exposure of 103.7 kg year. These methods suppress the background by a factor of about 5 in the region of interest around $$Q_{\beta \beta }= 2039$$ Q β β = 2039 keV, while preserving $$(81\pm 3)$$ ( 81 ± 3 ) % of the signal. In addition, an exhaustive list of parameters is provided which were used in the final data analysis.
Published: 2021

6. LEGEND-1000 Preconceptual Design Report

Author: Abgrall, N., Abt, I., Agostini, M., Alexander, A., Andreoiu, C., Araujo, G., Avignone, F., Bae, W., Bakalyarov, A., Balata, M., Bantel, M., Barabanov, I., Barabash, A., Barbeau, P., Barton, C., Barton, P., Baudis, L., Bauer, C., Bernieri, E., Bezrukov, L., Bhimani, K., Biancacci, V., Blalock, E., Bolozdynya, A., Borden, S., Bos, B., Bossio, E., Boston, A., Bothe, V., Bouabid, R., Boyd, S., Brugnera, R., Burlac, N., Busch, M., Caldwell, A., Caldwell, T., Carney, R., Cattadori, C., Chan, Y., Chernogorov, A., Christofferson, C., Chu, P., Clark, M., Cohen, T., Combs, D., Comellato, T., Cooper, R., Costa, I., D'Andrea, V., Detwiler, J., Di Giacinto, A., Di Marco, N., Dobson, J., Drobizhev, A., Durand, M., Edzards, F., Efremenko, Y., Elliott, S., Engelhardt, A., Fajt, L., Faud, N., Febbraro, M., Ferella, F., Fields, D., Fischer, F., Fomina, M., Fox, H., Franchi, J., Gala, R., Galindo-Uribarri, A., Gangapshev, A., Garfagnini, A., Geraci, A., Gilbert, C., Gold, M., Gooch, C., Gradwohl, K., Green, M., Grinyer, G., Grobov, A., Gruszko, J., Guinn, I., Guiseppe, V., Gurentsov, V., Gurov, Y., Gusev, K., Hacket, B., Hagemann, F., Hakenmüeller, J., Haranczyk, M., Hauertmann, L., Haufe, C., Hayward, C., Heffron, B., Henkes, F., Henning, R., Aguilar, D., Hinton, J., Hodak, R., Hoffmann, H., Hofmann, W., Hostiuc, A., Huang, J., Hult, M., Mirza, M., Jochum, J., Jones, R., Judson, D., Junker, M., Kaizer, J., Kazalov, V., Kermaïdic, Y., Khushbakht, H., Kidd, M., Kihm, T., Kilgus, K., Kim, I., Klimenko, A., Knöpfle, K., Kochetov, O., Konovalov, S., Kontul, I., Kool, K., Kormos, L., Kornoukhov, V., Korosec, M., Krause, P., Kuzminov, V., López-Castaño, J., Lang, K., Laubenstein, M., León, E., Lehnert, B., Leonhardt, A., Li, A., Lindner, M., Lippi, I., Liu, X., Liu, J., Loomba, D., Lubashevskiy, A., Lubsandorzhiev, B., Lusardi, N., Müller, Y., Macko, M., Macolino, C., Majorovits, B., Mamedov, F., Maneschg, W., Manzanillas, L., Marshall, G., Martin, R., Martin, E., Massarczyk, R., Mei, D., Meijer, S., Mertens, S., Misiaszek, M., Mondragon, E., Morella, M., Morgan, B., Mroz, T., Muenstermann, D., Nave, C., Nemchenok, I., Neuberger, M., Oli, T., Gann, G., Othman, G., Palušova, V., Panth, R., Papp, L., Paudel, L., Pelczar, K., Perez, J., Pertoldi, L., Pettus, W., Piseri, P., Poon, A., Povinec, P., Pullia, A., Radford, D., Ramachers, Y., Ransom, C., Rauscher, L., Redchuk, M., Reine, A., Riboldi, S., Rielage, K., Rozov, S., Rukhadze, E., Rumyantseva, N., Runge, J., Ruof, N., Saakyan, R., Sailer, S., Salamanna, G., Salamida, F., Salvat, D., Sandukovsky, V., Schönert, S., Schültz, A., Schütt, M., Schaper, D., Schreiner, J., Schulz, O., Schuster, M., Schwarz, M., Schwingenheuer, B., Selivanenko, O., Shaflee, M., Shevchik, E., Shirchenko, M., Shitov, Y., Simgen, H., Simkovic, F., Skorokhvatov, M., Slavickova, M., Smolek, K., Smolnikov, A., Solomon, J., Song, G., Starosta, K., Stekl, I., Stommel, M., Stukov, D., Sumathi, R., Sweigart, D., Szczepaniec, K., Taffarello, L., Tagnani, D., Tayloe, R., Tedeschi, D., Turqueti, M., Varner, R., Vasilyev, S., Veresnikova, A., Vetter, K., Vignoli, C., Vogl, C., von Sturm, K., Waters, D., Waters, J., Wei, W., Wiesinger, C., Wilkerson, J., Willers, M., Wiseman, C., Wojcik, M., Wu, V., Xu, W., Yakushev, E., Ye, T., Yu, C., Yumatov, V., Zaretski, N., Zeman, J., Zhitnikov, I., Zinatulina, D., Zschocke, A., Zsigmond, A., Zuber, K., Zuzel, G., and LEGEND Collaboration
Subjects: LEGEND - Abteilung Hinton, High Energy Physics::Experiment
Abstract: We propose the construction of LEGEND-1000, the ton-scale Large Enriched Germanium Experiment for Neutrinoless $\beta \beta$ Decay. This international experiment is designed to answer one of the highest priority questions in fundamental physics. It consists of 1000 kg of Ge detectors enriched to more than 90% in the $^{76}$Ge isotope operated in a liquid argon active shield at a deep underground laboratory. By combining the lowest background levels with the best energy resolution in the field, LEGEND-1000 will perform a quasi-background-free search and can make an unambiguous discovery of neutrinoless double-beta decay with just a handful of counts at the decay $Q$ value. The experiment is designed to probe this decay with a 99.7%-CL discovery sensitivity in the $^{76}$Ge half-life of $1.3\times10^{28}$ years, corresponding to an effective Majorana mass upper limit in the range of 9-21 meV, to cover the inverted-ordering neutrino mass scale with 10 yr of live time.
Published: 2021

7. Characterization of inverted coaxial $^{76}$Ge detectors in GERDA for future double-$��$ decay experiments

Author: GERDA Collaboration, Agostini, M., Araujo, G. R., Bakalyarov, A. M., Balata, M., Barabanov, I., Baudis, L., Bauer, C., Bellotti, E., Belogurov, S., Bettini, A., Bezrukov, L., Biancacci, V., Bossio, E., Bothe, V., Brudanin, V., Brugnera, R., Caldwell, A., Cattadori, C., Chernogorov, A., Comellato, T., D'Andrea, V., Demidova, E. V., Di Marco, N., Doroshkevich, E., Fischer, F., Fomina, M., Gangapshev, A., Garfagnini, A., Gooch, C., Grabmayr, P., Gurentsov, V., Gusev, K., Hakenm��ller, J., Hemmer, S., Hofmann, W., Huang, J., Hult, M., Inzhechik, L. V., Cs��thy, J. Janicsk��, Jochum, J., Junker, M., Kazalov, V., Kerma��dic, Y., Khushbakht, H., Kihm, T., Kirpichnikov, I. V., Klimenko, A., Knei��l, R., Kn��pfle, K. T., Kochetov, O., Kornoukhov, V. N., Krause, P., Kuzminov, V. V., Laubenstein, M., Lindner, M., Lippi, I., Lubashevskiy, A., Lubsandorzhiev, B., Lutter, G., Macolino, C., Majorovits, B., Maneschg, W., Manzanillas, L., Miloradovic, M., Mingazheva, R., Misiaszek, M., Moseev, P., M��ller, Y., Nemchenok, I., Pandola, L., Pelczar, K., Pertoldi, L., Piseri, P., Pullia, A., Ransom, C., Rauscher, L., Riboldi, S., Rumyantseva, N., Sada, C., Salamida, F., Sch��nert, S., Schreiner, J., Sch��tt, M., Sch��tz, A. -K., Schulz, O., Schwarz, M., Schwingenheuer, B., Selivanenko, O., Shevchik, E., Shirchenko, M., Shtembari, L., Simgen, H., Smolnikov, A., Stukov, D., Vasenko, A. A., Veresnikova, A., Vignoli, C., von Sturm, K., Wester, T., Wiesinger, C., Wojcik, M., Yanovich, E., Zatschler, B., Zhitnikov, I., Zhukov, S. V., Zinatulina, D., Zschocke, A., Zsigmond, A. J., Zuber, K., and Zuzel, G.
Subjects: Physics::Instrumentation and Detectors, FOS: Physical sciences, High Energy Physics::Experiment, Instrumentation and Detectors (physics.ins-det), Nuclear Experiment (nucl-ex)
Abstract: Neutrinoless double-$��$ decay of $^{76}$Ge is searched for with germanium detectors where source and detector of the decay are identical. For the success of future experiments it is important to increase the mass of the detectors. We report here on the characterization and testing of five prototype detectors manufactured in inverted coaxial (IC) geometry from material enriched to 88% in $^{76}$Ge. IC detectors combine the large mass of the traditional semi-coaxial Ge detectors with the superior resolution and pulse shape discrimination power of point contact detectors which exhibited so far much lower mass. Their performance has been found to be satisfactory both when operated in vacuum cryostat and bare in liquid argon within the GERDA setup. The measured resolutions at the Q-value for double-$��$ decay of $^{76}$Ge (Q$_{��}$ = 2039 keV) are about 2.1 keV full width at half maximum in vacuum cryostat. After 18 months of operation within the ultra-low background environment of the GERmanium Detector Array (GERDA) experiment and an accumulated exposure of 8.5 kg$\cdot$yr, the background index after analysis cuts is measured to be $4.9^{+7.3}_{-3.4}\times 10^{-4}$ counts /(keV$\cdot$kg$\cdot$yr) around Q$_{��}$. This work confirms the feasibility of IC detectors for the next-generation experiment LEGEND., 13 pages, 12 figures, submitted to EPJC
Published: 2021
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8. First Search for Bosonic Superweakly Interacting Massive Particles with Masses up to 1 MeV/c2 with GERDA

Author: Agostini, M., Bakalyarov, A. M., Balata, M., Barabanov, I., Baudis, L., Bauer, C., Bellotti, E., Belogurov, S., Bettini, A., Bezrukov, L., Borowicz, D., Bossio, E., Bothe, V., Brudanin, V., Brugnera, R., Caldwell, A., Cattadori, C., Chernogorov, A., Comellato, T., D’Andrea, V., Demidova, E. V., Di Marco, N., Doroshkevich, E., Egorov, V., Fischer, F., Fomina, M., Gangapshev, A., Garfagnini, A., Gooch, C., Grabmayr, P., Gurentsov, V., Gusev, K., Hakenmüller, J., Hemmer, S., Hiller, R., Hofmann, W., Hult, M., Inzhechik, L. V., Janicskó Csáthy, J., Jochum, J., Junker, M., Kazalov, V., Kermaïdic, Y., Khushbakht, H., Kihm, T., Kirpichnikov, I. V., Klimenko, A., Kneißl, R., Knöpfle, K. T., Kochetov, O., Kornoukhov, V. N., Krause, P., Kuzminov, V. V., Laubenstein, M., Lazzaro, A., Lindner, M., Lippi, I., Lubashevskiy, A., Lubsandorzhiev, B., Lutter, G., Macolino, C., Majorovits, B., Maneschg, W., Miloradovic, M., Mingazheva, R., Misiaszek, Marcin, Moseev, P., Nemchenok, I., Panas, Krzysztof, Pandola, L., Pelczar, Krzysztof, Pertoldi, L., Piseri, P., Pullia, A., Ransom, C., Rauscher, L., Riboldi, S., Rumyantseva, N., Sada, C., Salamida, F., Schönert, S., Schreiner, J., Schütt, M., Schütz, A-K., Schulz, O., Schwarz, M., Schwingenheuer, B., Selivanenko, O., Shevchik, E., Shirchenko, M., Simgen, H., Smolnikov, A., Stukov, D., Vasenko, A. A., Veresnikova, A., Vignoli, C., von Sturm, K., Wester, T., Wiesinger, C., Wójcik, Marcin, Yanovich, E., Zatschler, B., Zhitnikov, I., Zhukov, S. V., Zinatulina, D., Zschocke, A., Zsigmond, A. J., Zuber, K., Zuzel, Grzegorz, and GERDA Collaboration
Subjects: Physics::Instrumentation and Detectors, GERDA - Abteilung Hinton, High Energy Physics::Experiment, Nuclear Experiment
Abstract: We present the first search for bosonic superweakly interacting massive particles (super-WIMPs) as keV-scale dark matter candidates performed with the GERDA experiment. GERDA is a neutrinoless double- β decay experiment which operates high-purity germanium detectors enriched in 76 Ge in an ultralow background environment at the Laboratori Nazionali del Gran Sasso (LNGS) of INFN in Italy. Searches were performed for pseudoscalar and vector particles in the mass region from 60 keV / c 2 to 1 MeV / c 2 . No evidence for a dark matter signal was observed, and the most stringent constraints on the couplings of super-WIMPs with masses above 120 keV / c 2 have been set. As an example, at a mass of 150 keV / c 2 the most stringent direct limits on the dimensionless couplings of axionlike particles and dark photons to electrons of g a e < 3 × 10 − 12 and α ′ / α < 6.5 × 10 − 24 at 90% credible interval, respectively, were obtained.
Published: 2020

9. Final Results of GERDA on the Search for Neutrinoless Double-$��$ Decay

Author: GERDA Collaboration, Agostini, M., Araujo, G. R., Bakalyarov, A. M., Balata, M., Barabanov, I., Baudis, L., Bauer, C., Bellotti, E., Belogurov, S., Bettini, A., Bezrukov, L., Biancacci, V., Borowicz, D., Bossio, E., Bothe, V., Brudanin, V., Brugnera, R., Caldwell, A., Cattadori, C., Chernogorov, A., Comellato, T., D'Andrea, V., Demidova, E. V., Di Marco, N., Doroshkevich, E., Fischer, F., Fomina, M., Gangapshev, A., Garfagnini, A., Gooch, C., Grabmayr, P., Gurentsov, V., Gusev, K., Hakenm��ller, J., Hemmer, S., Hiller, R., Hofmann, W., Huang, J., Hult, M., Inzhechik, L. V., Cs��thy, J. Janicsk��, Jochum, J., Junker, M., Kazalov, V., Kerma��dic, Y., Khushbakht, H., Kihm, T., Kirpichnikov, I. V., Klimenko, A., Knei��l, R., Kn��pfle, K. T., Kochetov, O., Kornoukhov, V. N., Krause, P., Kuzminov, V. V., Laubenstein, M., Lazzaro, A., Lindner, M., Lippi, I., Lubashevskiy, A., Lubsandorzhiev, B., Lutter, G., Macolino, C., Majorovits, B., Maneschg, W., Manzanillas, L., Miloradovic, M., Mingazheva, R., Misiaszek, M., Moseev, P., M��ller, Y., Nemchenok, I., Panas, K., Pandola, L., Pelczar, K., Pertoldi, L., Piseri, P., Pullia, A., Ransom, C., Rauscher, L., Riboldi, S., Rumyantseva, N., Sada, C., Salamida, F., Sch��nert, S., Schreiner, J., Sch��tt, M., Sch��tz, A. -K., Schulz, O., Schwarz, M., Schwingenheuer, B., Selivanenko, O., Shevchik, E., Shirchenko, M., Shtembari, L., Simgen, H., Smolnikov, A., Stukov, D., Vasenko, A. A., Veresnikova, A., Vignoli, C., von Sturm, K., Wester, T., Wiesinger, C., Wojcik, M., Yanovich, E., Zatschler, B., Zhitnikov, I., Zhukov, S. V., Zinatulina, D., Zschocke, A., Zsigmond, A. J., Zuber, K., and Zuzel, G.
Subjects: High Energy Physics - Experiment (hep-ex), FOS: Physical sciences, High Energy Physics::Experiment, Instrumentation and Detectors (physics.ins-det), Nuclear Experiment (nucl-ex)
Abstract: The GERmanium Detector Array (GERDA) experiment searched for the lepton-number-violating neutrinoless double-$��$ ($0��$) decay of $^{76}$Ge, whose discovery would have far-reaching implications in cosmology and particle physics. By operating bare germanium diodes, enriched in $^{76}$Ge, in an active liquid argon shield, GERDA achieved an unprecedently low background index of $5.2\times10^{-4}$ counts/(keV$\cdot$kg$\cdot$yr) in the signal region and met the design goal to collect an exposure of 100 kg$\cdot$yr in a background-free regime. When combined with the result of Phase I, no signal is observed after 127.2 kg$\cdot$yr of total exposure. A limit on the half-life of $0��$ decay in $^{76}$Ge is set at $T_{1/2}>1.8\times10^{26}$ yr at 90% C.L., which coincides with the sensitivity assuming no signal., 7 pages, 3 figures, submitted to Physical Review Letters
Published: 2020
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10. The first search for bosonic super-WIMPs with masses up to 1 MeV/c$^2$ with GERDA

Author: GERDA collaboration, Agostini, M., Bakalyarov, A. M., Balata, M., Barabanov, I., Baudis, L., Bauer, C., Bellotti, E., Belogurov, S., Bettini, A., Bezrukov, L., Borowicz, D., Bossio, E., Bothe, V., Brudanin, V., Brugnera, R., Caldwell, A., Cattadori, C., Chernogorov, A., Comellato, T., D'Andrea, V., Demidova, E. V., Di Marco, N., Doroshkevich, E., Egorov, V., Fischer, F., Fomina, M., Gangapshev, A., Garfagnini, A., Gooch, C., Grabmayr, P., Gurentsov, V., Gusev, K., Hakenmüller, J., Hemmer, S., Hiller, R., Hofmann, W., Hult, M., Inzhechik, L. V., Csáthy, J. Janicskó, Jochum, J., Junker, M., Kazalov, V., Kermaïdic, Y., Khushbakht, H., Kihm, T., Kirpichnikov, I. V., Klimenko, A., Kneißl, R., Knöpfle, K. T., Kochetov, O., Kornoukhov, V. N., Krause, P., Kuzminov, V. V., Laubenstein, M., Lazzaro, A., Lindner, M., Lippi, I., Lubashevskiy, A., Lubsandorzhiev, B., Lutter, G., Macolino, C., Majorovits, B., Maneschg, W., Miloradovic, M., Mingazheva, R., Misiaszek, M., Moseev, P., Nemchenok, I., Panas, K., Pandola, L., Pelczar, K., Pertoldi, L., Piseri, P., Pullia, A., Ransom, C., Rauscher, L., Riboldi, S., Rumyantseva, N., Sada, C., Salamida, F., Schönert, S., Schreiner, J., Schütt, M., Schütz, A-K., Schulz, O., Schwarz, M., Schwingenheuer, B., Selivanenko, O., Shevchik, E., Shirchenko, M., Simgen, H., Smolnikov, A., Stukov, D., Vasenko, A. A., Veresnikova, A., Vignoli, C., von Sturm, K., Wester, T., Wiesinger, C., Wojcik, M., Yanovich, E., Zatschler, B., Zhitnikov, I., Zhukov, S. V., Zinatulina, D., Zschocke, A., Zsigmond, A. J., and Zuzel, K. Zuber G.
Subjects: High Energy Physics - Experiment (hep-ex), Physics::Instrumentation and Detectors, FOS: Physical sciences, High Energy Physics::Experiment, Nuclear Experiment (nucl-ex), Nuclear Experiment, High Energy Physics - Experiment
Abstract: We present the first search for bosonic super-WIMPs as keV-scale dark matter candidates performed with the GERDA experiment. GERDA is a neutrinoless double-beta decay experiment which operates high-purity germanium detectors enriched in $^{76}$Ge in an ultra-low background environment at the Laboratori Nazionali del Gran Sasso (LNGS) of INFN in Italy. Searches were performed for pseudoscalar and vector particles in the mass region from 60 keV/c$^2$ to 1 MeV/c$^2$. No evidence for a dark matter signal was observed, and the most stringent constraints on the couplings of super-WIMPs with masses above 120 keV/c$^2$ have been set. As an example, at a mass of 150 keV/c$^2$ the most stringent direct limits on the dimensionless couplings of axion-like particles and dark photons to electrons of $g_{ae} < 3 \cdot 10^{-12}$ and ${\alpha'}/{\alpha} < 6.5 \cdot 10^{-24}$ at 90% credible interval, respectively, were obtained., Comment: 6 pages, 3 figures, submitted to Physical Review Letters, added list of authors, updated ref. [21]
Published: 2020
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11. First Search for Bosonic Superweakly Interacting Massive Particles with Masses up to 1 MeV/c2 with GERDA

Author: Agostini, M., Bakalyarov, A. M., Balata, M., Barabanov, I., Baudis, L., Bauer, C., Bellotti, E., Belogurov, S., Bettini, A., Bezrukov, L., Borowicz, D., Bossio, E., Bothe, V., Brudanin, V., Brugnera, R., Caldwell, A., Cattadori, C., Chernogorov, A., Comellato, T., D’Andrea, V., Demidova, E. V., Di Marco, N., Doroshkevich, E., Egorov, V., Fischer, F., Fomina, M., Gangapshev, A., Garfagnini, A., Gooch, C., Grabmayr, P., Gurentsov, V., Gusev, K., Hakenmüller, J., Hemmer, S., Hiller, R., Hofmann, W., Hult, M., Inzhechik, L. V., Janicskó Csáthy, J., Jochum, J., Junker, M., Kazalov, V., Kermaïdic, Y., Khushbakht, H., Kihm, T., Kirpichnikov, I. V., Klimenko, A., Kneißl, R., Knöpfle, K. T., Kochetov, O., Kornoukhov, V. N., Krause, P., Kuzminov, V. V., Laubenstein, M., Lazzaro, A., Lindner, M., Lippi, I., Lubashevskiy, A., Lubsandorzhiev, B., Lutter, G., Macolino, C., Majorovits, B., Maneschg, W., Miloradovic, M., Mingazheva, R., Misiaszek, M., Moseev, P., Nemchenok, I., Panas, K., Pandola, L., Pelczar, K., Pertoldi, L., Piseri, P., Pullia, A., Ransom, C., Rauscher, L., Riboldi, S., Rumyantseva, N., Sada, C., Salamida, F., Schönert, S., Schreiner, J., Schütt, M., Schütz, A-K., Schulz, O., Schwarz, M., Schwingenheuer, B., Selivanenko, O., Shevchik, E., Shirchenko, M., Simgen, H., Smolnikov, A., Stukov, D., Vasenko, A. A., Veresnikova, A., Vignoli, C., von Sturm, K., Wester, T., Wiesinger, C., Wojcik, M., Yanovich, E., Zatschler, B., Zhitnikov, I., Zhukov, S. V., Zinatulina, D., Zschocke, A., Zsigmond, A. J., Zuber, K., and Zuzel, G.
Subjects: ddc
Published: 2019

12. Short-term ambient ozone exposure and inflammatory biomarkers in adolescents

Author: Zhao T, Tamara Schikowski, Joachim Heinrich, M. Standl, Iana Markevych, Sybille Koletzko, Berdel D, Bauer C, Nowak D, and von A
Subjects: Ambient ozone, Global and Planetary Change, Epidemiology, business.industry, Health, Toxicology and Mutagenesis, Environmental health, Public Health, Environmental and Occupational Health, Medicine, business, Birth cohort, Pollution, Inflammatory biomarkers, Term (time)
Published: 2019

13. Vesicle shrinkage in hydrous phonolitic melt during cooling

Author: Allabar, A., Dobson, K. J., Bauer, C. C., Nowak, M., Department of Geosciences, University of Tübingen, Tübingen, Germany, and Civil & Environmental Engineering, University of Strathclyde, Glasgow, UK
Subjects: Coalescence (physics), Original Paper, Buoyancy, Vesicle shrinkage, Decompression, Vesicle, Thermodynamics, ddc:550.78, engineering.material, Fictive temperature, H2O resorption, Geophysics, TA, Geochemistry and Petrology, engineering, Decompression experiments, Vesiculation, Quench effect, Glass transition, Porosity, Ejecta, Geology, Shrinkage
Abstract: The ascent of hydrous magma prior to volcanic eruptions is largely driven by the formation of H2O vesicles and their subsequent growth upon further decompression. Porosity controls buoyancy as well as vesicle coalescence and percolation, and is important when identifying the differences between equilibrium or disequilibrium degassing from textural analysis of eruptive products. Decompression experiments are routinely used to simulate magma ascent. Samples exposed to high temperature (T) and pressure (P) are decompressed and rapidly cooled to ambient T for analysis. During cooling, fluid vesicles may shrink due to decrease of the molar volume of H2O and by resorption of H2O back into the melt driven by solubility increase with decreasing T at P, German Science Foundation
Published: 2019

14. Probing Majorana neutrinos with double-$��$ decay

Author: GERDA Collaboration, Agostini, M., Bakalyarov, A. M., Balata, M., Barabanov, I., Baudis, L., Bauer, C., Bellotti, E., Belogurov, S., Bettini, A., Bezrukov, L., Borowicz, D., Brudanin, V., Brugnera, R., Caldwell, A., Cattadori, C., Chernogorov, A., Comellato, T., D'Andrea, V., Demidova, E. V., Di Marco, N., Domula, A., Doroshkevich, E., Egorov, V., Falkenstein, R., Fomina, M., Gangapshev, A., Garfagnini, A., Giordano, M., Grabmayr, P., Gurentsov, V., Gusev, K., Hakenm��ller, J., Hegai, A., Heisel, M., Hemmer, S., Hiller, R., Hofmann, W., Hult, M., Inzhechik, L. V., Cs��thy, J. Janicsk��, Jochum, J., Junker, M., Kazalov, V., Kerma��dic, Y., Kihm, T., Kirpichnikov, I. V., Kirsch, A., Kish, A., Klimenko, A., Knei��l, R., Kn��pfle, K. T., Kochetov, O., Kornoukhov, V. N., Krause, P., Kuzminov, V. V., Laubenstein, M., Lazzaro, A., Lindner, M., Lippi, I., Lubashevskiy, A., Lubsandorzhiev, B., Lutter, G., Macolino, C., Majorovits, B., Maneschg, W., Miloradovic, M., Mingazheva, R., Misiaszek, M., Moseev, P., Nemchenok, I., Panas, K., Pandola, L., Pelczar, K., Pertoldi, L., Piseri, P., Pullia, A., Ransom, C., Riboldi, S., Rumyantseva, N., Sada, C., Sala, E., Salamida, F., Schmitt, C., Schneider, B., Sch��nert, S., Sch��tz, A. -K., Schulz, O., Schwingenheuer, B., Schwarz, M., Selivanenko, O., Shevchik, E., Shirchenko, M., Simgen, H., Smolnikov, A., Stanco, L., Stukov, D., Vanhoefer, L., Vasenko, A. A., Veresnikova, A., von Sturm, K., Wagner, V., Wegmann, A., Wester, T., Wiesinger, C., Wojcik, M., Yanovich, E., Zhitnikov, I., Zhukov, S. V., Zinatulina, D., Zschocke, A., Zsigmond, A. J., Zuber, K., and Zuzel, G.
Subjects: High Energy Physics - Experiment (hep-ex), FOS: Physical sciences, High Energy Physics::Experiment, Nuclear Experiment (nucl-ex)
Abstract: A discovery that neutrinos are not the usual Dirac but Majorana fermions, i.e. identical to their antiparticles, would be a manifestation of new physics with profound implications for particle physics and cosmology. Majorana neutrinos would generate neutrinoless double-$��$ ($0��$) decay, a matter-creating process without the balancing emission of antimatter. So far, 0$��$ decay has eluded detection. The GERDA collaboration searches for the $0��$ decay of $^{76}$Ge by operating bare germanium detectors in an active liquid argon shield. With a total exposure of 82.4 kg$\cdot$yr, we observe no signal and derive a lower half-life limit of T$_{1/2}$ > 0.9$\cdot$10$^{26}$ yr (90% C.L.). Our T$_{1/2}$ sensitivity assuming no signal is 1.1$\cdot$10$^{26}$ yr. Combining the latter with those from other $0��$ decay searches yields a sensitivity to the effective Majorana neutrino mass of 0.07 - 0.16 eV, with corresponding sensitivities to the absolute mass scale in $��$ decay of 0.15 - 0.44 eV, and to the cosmological relevant sum of neutrino masses of 0.46 - 1.3 eV., Authors' main+supplementary text: 13+28 pages, 3+12 figures, 1+7 tables. Definite version to be published in Science
Published: 2019
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15. Characterization of 30 $^{76}$Ge enriched Broad Energy Ge detectors for GERDA Phase II

Author: GERDA collaboration, Agostini, M., Bakalyarov, A., Andreotti, E., Balata, M., Barabanov, I., Baudis, L., Barros, N., Bauer, C., Bellotti, E., Belogurov, S., Benato, G., Bettini, A., Bezrukov, L., Bode, T., Borowicz, D., Brudanin, V., Brugnera, R., Budjáš, D., Caldwell, A., Cattadori, C., Chernogorov, A., D'Andrea, V., Demidova, E., Di Marco, N., Domula, A., Doroshkevich, E., Egorov, V., Falkenstein, R., Freund, K., Gangapshev, A., Garfagnini, A., Gooch, C., Grabmayr, P., Gurentsov, V., Gusev, K., Hakenmüller, J., Hegai, A., Heisel, M., Hemmer, S., Hiller, R., Hofmann, W., Hult, M., Inzhechik, L., Csáthy, J., Jochum, J., Junker, M., Kazalov, V., Kermaidic, Y., Kihm, T., Kirpichnikov, I., Kirsch, A., Kish, A., Klimenko, A., Kneißl, R., Knoepfle, K., Kochetov, O., Kornoukhov, V., Kuzminov, V., Laubenstein, M., Lazzaro, A., Lehnert, B., Liao, Y., Lindner, M., Lippi, I., Lubashevskiy, A., Lubsandorzhiev, B., Lutter, G., Macolino, C., Majorovits, B., Maneschg, W., Miloradovic, M., Mingazheva, R., Misiaszek, M., Moseev, P., Nemchenok, I., Panas, K., Pandola, L., Pelczar, K., Pullia, A., Ransom, C., Riboldi, S., Rumyantseva, N., Sada, C., Salamida, F., Salathe, M., Schmitt, C., Schneider, B., Schönert, S., Schütz, A., Schulz, O., Schwingenheuer, B., Selivanenko, O., Shevchik, E., Shirchenko, M., Simgen, H., Smolnikov, A., Stanco, L., Ur, C., Vanhoefer, L., Vasenko, A., Veresnikova, A., von Sturm, K., Wagner, V., Wegmann, A., Wester, T., Wiesinger, C., Wojcik, M., Yanovich, E., Zhitnikov, I., Zhukov, S., Zinatulina, D., Zsigmond, A., Zuber, K., and Zuzel, G.
Subjects: Physics - Instrumentation and Detectors, FOS: Physical sciences, Instrumentation and Detectors (physics.ins-det), GERDA - Abteilung Hofmann
Abstract: The GERmanium Detector Array (GERDA) is a low background experiment located at the Laboratori Nazionali del Gran Sasso in Italy, which searches for neutrinoless double beta decay of $^{76}$Ge into $^{76}$Se+2e$^-$. GERDA has been conceived in two phases. Phase II, which started in December 2015, features several novelties including 30 new Ge detectors. These were manufactured according to the Broad Energy Germanium (BEGe) detector design that has a better background discrimination capability and energy resolution compared to formerly widely-used types. Prior to their installation, the new BEGe detectors were mounted in vacuum cryostats and characterized in detail in the HADES underground laboratory in Belgium. This paper describes the properties and the overall performance of these detectors during operation in vacuum. The characterization campaign provided not only direct input for GERDA Phase II data collection and analyses, but also allowed to study detector phenomena, detector correlations as well as to test the strength of pulse shape simulation codes., Comment: 29 pages, 18 figures
Published: 2019
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16. Microscopic structure of coexisting 0+ states in Ni68 probed via two-neutron transfer

Author: Flavigny, F., Elseviers, J., Andreyev, A. N., Bauer, C., Bildstein, V., Blazhev, A., Brown, B. A., De Witte, H., Diriken, J., Fedosseev, V. N., Franchoo, S., Gernhäuser, R., Huyse, M., Ilieva, S., Klupp, S., Kröll, Th., Lutter, R., Marsh, B. A., Mücher, D., Nowak, K., Otsuka, T., Pakarinen, J., Patronis, N., Raabe, R., Recchia, F., Reiter, P., Roger, T., Sambi, S., Seidlitz, M., Seliverstov, M. D., Siebeck, B., Tsunoda, Y., Van Duppen, P., Vermeulen, M., Von Schmid, M., Voulot, D., Warr, N., Wenander, F., and Wimmer, K.
Subjects: ddc
Published: 2018

17. Upgrade for Phase II of the Gerda experiment

Author: GERDA Collaboration, Agostini, M, Bakalyarov, AM, Balata, M, Barabanov, I, Baudis, L, Bauer, C, Bellotti, E, Belogurov, S, Belyaev, ST, Benato, G, Bettini, A, Bezrukov, L, Bode, T, Borowicz, D, Brudanin, V, Brugnera, R, Caldwell, A, Cattadori, C, Chernogorov, A, D’Andrea, V, Demidova, EV, Di Marco, N, Domula, A, Doroshkevich, E, Egorov, V, Falkenstein, R, Frodyma, N, Gangapshev, A, Garfagnini, A, Grabmayr, P, Gurentsov, V, Gusev, K, Hakenmüller, J, Hegai, A, Heisel, M, Hemmer, S, Hiller, R, Hofmann, W, Hult, M, Inzhechik, LV, Ioannucci, L, Janicskó Csáthy, J, Jochum, J, Junker, M, Kazalov, V, Kermaïdic, Y, Kihm, T, Kirpichnikov, IV, Kirsch, A, Kish, A, Klimenko, A, Kneißl, R, Knöpfle, KT, Kochetov, O, Kornoukhov, VN, Kuzminov, VV, Laubenstein, M, Lazzaro, A, Lebedev, VI, Lehnert, B, Lindner, M, Lippi, I, Lubashevskiy, A, Lubsandorzhiev, B, Lutter, G, Macolino, C, Majorovits, B, Maneschg, W, Medinaceli, E, Miloradovic, M, Mingazheva, R, Misiaszek, M, Moseev, P, Nemchenok, I, Nisi, S, Panas, K, Pandola, L, Pelczar, K, Pullia, A, Ransom, C, Riboldi, S, Rumyantseva, N, Sada, C, Salamida, F, Salathe, M, Schmitt, C, Schneider, B, Schönert, S, Schreiner, J, Schütz, A-K, Schulz, O, Schwingenheuer, B, Selivanenko, O, Shevchik, E, Shirchenko, M, Simgen, H, Smolnikov, A, Stanco, L, and Vanhoefer, L
Subjects: Quantum Physics, Particle and Plasma Physics, Molecular, Nuclear, nucl-ex, physics.ins-det, Atomic, Nuclear & Particles Physics
Abstract: The Gerda collaboration is performing a sensitive search for neutrinoless double beta decay of 76Ge at the INFN Laboratori Nazionali del Gran Sasso, Italy. The upgrade of the Gerda experiment from PhaseI to PhaseII has been concluded in December 2015. The first PhaseII data release shows that the goal to suppress the background by one order of magnitude compared to PhaseI has been achieved. Gerda is thus the first experiment that will remain “background-free” up to its design exposure (100 kgyear). It will reach thereby a half-life sensitivity of more than 10 26 year within 3 years of data collection. This paper describes in detail the modifications and improvements of the experimental setup for PhaseII and discusses the performance of individual detector components.
Published: 2018

18. Upgrade for Phase II of the Gerda experiment

Author: Agostini, M, Bakalyarov, AM, Balata, M, Barabanov, I, Baudis, L, Bauer, C, Bellotti, E, Belogurov, S, Belyaev, ST, Benato, G, Bettini, A, Bezrukov, L, Bode, T, Borowicz, D, Brudanin, V, Brugnera, R, Caldwell, A, Cattadori, C, Chernogorov, A, D’Andrea, V, Demidova, EV, Di Marco, N, Domula, A, Doroshkevich, E, Egorov, V, Falkenstein, R, Frodyma, N, Gangapshev, A, Garfagnini, A, Grabmayr, P, Gurentsov, V, Gusev, K, Hakenmüller, J, Hegai, A, Heisel, M, Hemmer, S, Hiller, R, Hofmann, W, Hult, M, Inzhechik, LV, Ioannucci, L, Janicskó Csáthy, J, Jochum, J, Junker, M, Kazalov, V, Kermaïdic, Y, Kihm, T, Kirpichnikov, IV, Kirsch, A, Kish, A, Klimenko, A, Kneißl, R, Knöpfle, KT, Kochetov, O, Kornoukhov, VN, Kuzminov, VV, Laubenstein, M, Lazzaro, A, Lebedev, VI, Lehnert, B, Lindner, M, Lippi, I, Lubashevskiy, A, Lubsandorzhiev, B, Lutter, G, Macolino, C, Majorovits, B, Maneschg, W, Medinaceli, E, Miloradovic, M, Mingazheva, R, Misiaszek, M, Moseev, P, Nemchenok, I, Nisi, S, Panas, K, Pandola, L, Pelczar, K, Pullia, A, Ransom, C, Riboldi, S, Rumyantseva, N, Sada, C, Salamida, F, Salathe, M, Schmitt, C, Schneider, B, Schönert, S, Schreiner, J, Schütz, AK, Schulz, O, Schwingenheuer, B, Selivanenko, O, Shevchik, E, Shirchenko, M, Simgen, H, Smolnikov, A, Stanco, L, Vanhoefer, L, and Vasenko, AA
Subjects: Quantum Physics, Particle and Plasma Physics, Molecular, Nuclear, nucl-ex, physics.ins-det, Nuclear & Particles Physics, Atomic
Abstract: The Gerda collaboration is performing a sensitive search for neutrinoless double beta decay of 76Ge at the INFN Laboratori Nazionali del Gran Sasso, Italy. The upgrade of the Gerda experiment from PhaseI to PhaseII has been concluded in December 2015. The first PhaseII data release shows that the goal to suppress the background by one order of magnitude compared to PhaseI has been achieved. Gerda is thus the first experiment that will remain “background-free” up to its design exposure (100 kgyear). It will reach thereby a half-life sensitivity of more than 10 26 year within 3 years of data collection. This paper describes in detail the modifications and improvements of the experimental setup for PhaseII and discusses the performance of individual detector components.
Published: 2018

19. Ein internationales MDR-TB-Cluster bei jungen Geflüchteten vom Horn von Afrika

Author: Kröger, Stefan, Hauer, Barbara, Haas, Walter, Fiebig, Lena, Charles, T., Kranzer, Katharina, Merker, M., Niemann, Stefan, Schacher, R., Bauer, C., Geiger, F., Hendrickx, D., and Wagner-Wiening, Christiane
Subjects: education, ddc:610, 610 Medizin und Gesundheit
Abstract: Seit Frühjahr 2016 wurden in mehreren Mitgliedsstaaten der Europäischen Union (EU) und der Schweiz Erkrankungen an MDR-TB beobachtet, die ein seltenes Resistenzprofil gegenüber Zweitrangmedikamenten aufweisen. Dies veranlasste die für Mykobakterien zuständigen nationalen Referenzzentren in Deutschland und der Schweiz zu weiterführenden Untersuchungen. Die Patienten stammten alle aus Ländern vom Horn von Afrika, überwiegend aus Somalia. Bis November 2018 konnten in Deutschland 23 Fälle dem Geschehen zugeordnet werden. Im Epidemiologischen Bulletin 48/2018 werden Ablauf und Vorgehen sowie Erfahrungen, Erkenntnisse und Herausforderungen bei der Untersuchung dieses MDR-TB-Clusters aus der Perspektive des öffentlichen Gesundheitsdienstes (ÖGD) in Deutschland geschildert.
Published: 2018
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20. Limits on uranium and thorium bulk content in GERDA Phase I detectors

Author: collaboration, GERDA, Agostini, M, Allardt, M, Bakalyarov, AM, Balata, M, Barabanov, I, Baudis, L, Bauer, C, Becerici-Schmidt, N, Bellotti, E, Belogurov, S, Belyaev, ST, Benato, G, Bettini, A, Bezrukov, L, Bode, T, Borowicz, D, Brudanin, V, Brugnera, R, Caldwell, A, Cattadori, C, Chernogorov, A, D’Andrea, V, Demidova, EV, di Vacri, A, Domula, A, Doroshkevich, E, Egorov, V, Falkenstein, R, Fedorova, O, Freund, K, Frodyma, N, Gangapshev, A, Garfagnini, A, Grabmayr, P, Gurentsov, V, Gusev, K, Hakemüller, J, Hegai, A, Heisel, M, Hemmer, S, Hofmann, W, Hult, M, Inzhechik, LV, Csáthy, J Janicskó, Jochum, J, Junker, M, Kazalov, V, Kihm, T, Kirpichnikov, IV, Kirsch, A, Kish, A, Klimenko, A, Kneißl, R, Knöpfle, KT, Kochetov, O, Kornoukhov, VN, Kuzminov, VV, Laubenstein, M, Lazzaro, A, Lebedev, VI, Lehnert, B, Liao, HY, Lindner, M, Lippi, I, Lubashevskiy, A, Lubsandorzhiev, B, Lutter, G, Macolino, C, Majorovits, B, Maneschg, W, Medinaceli, E, Mingazheva, R, Misiaszek, M, Moseev, P, Nemchenok, I, Palioselitis, D, Panas, K, Pandola, L, Pelczar, K, Pullia, A, Riboldi, S, Rumyantseva, N, Sada, C, Salamida, F, Salathe, M, Schmitt, C, Schneider, B, Schönert, S, Schreiner, J, Schütz, A-K, Schulz, O, Schwingenheuer, B, Selivanenko, O, Shevchik, E, Shirchenko, M, Simgen, H, Smolnikov, A, Stanco, L, and Stepaniuk, M
Subjects: Particle and Plasma Physics, Molecular, Radiopurity, Nuclear, Germanium detectors, Uranium and thorium bulk content, nucl-ex, Double beta decay, physics.ins-det, Nuclear & Particles Physics, Atomic, Astronomical and Space Sciences
Abstract: Internal contaminations of 238U, 235U and 232Th in the bulk of high purity germanium detectors are potential backgrounds for experiments searching for neutrinoless double beta decay of 76Ge. The data from GERDA Phase I have been analyzed for alpha events from the decay chain of these contaminations by looking for full decay chains and for time correlations between successive decays in the same detector. No candidate events for a full chain have been found. Upper limits on the activities in the range of a few nBq/kg for 226Ra, 227Ac and 228Th, the long-lived daughter nuclides of 238U, 235U and 232Th, respectively, have been derived. With these upper limits a background index in the energy region of interest from 226Ra and 228Th contamination is estimated which satisfies the prerequisites of a future ton scale germanium double beta decay experiment.
Published: 2017

21. Background free search for neutrinoless double beta decay with GERDA Phase II

Author: Agostini, M., Allardt, M., Bakalyarov, A. M., Balata, M., Barabanov, I., Baudis, L., Bauer, C., Bellotti, E., Belogurov, S., Belyaev, S. T., Benato, G., Bettini, A., Bezrukov, L., Bode, T., Borowicz, D., Brudanin, V., Brugnera, R., Caldwell, A., Cattadori, C., Chernogorov, A., D'Andrea, V., Demidova, E. V., DiMarco, N., diVacri, A., Domula, A., Doroshkevich, E., Egorov, V., Falkenstein, R., Fedorova, O., Freund, K., Frodyma, N., Gangapshev, A., Garfagnini, A., Gooch, C., Grabmayr, P., Gurentsov, V., Gusev, K., Hakenmüller, J., Hegai, A., Heisel, M., Hemmer, S., Hofmann, W., Hult, M., Inzhechik, L. V., Csáthy, J. Janicskó, Jochum, J., Junker, M., Kazalov, V., Kihm, T., Kirpichnikov, I. V., Kirsch, A., Kish, A., Klimenko, A., Kneißl, R., Knöpfle, K. T., Kochetov, O., Kornoukhov, V. N., Kuzminov, V. V., Laubenstein, M., Lazzaro, A., Lebedev, V. I., Lehnert, B., Liao, H. Y., Lindner, M., Lippi, I., Lubashevskiy, A., Lubsandorzhiev, B., Lutter, G., Macolino, C., Majorovits, B., Maneschg, W., Medinaceli, E., Miloradovic, M., Mingazheva, R., Misiaszek, M., Moseev, P., Nemchenok, I., Palioselitis, D., Panas, K., Pandola, L., Pelczar, K., Pullia, A., Riboldi, S., Rumyantseva, N., Sada, C., Salamida, F., Salathe, M., Schmitt, C., Schneider, B., Schönert, S., Schreiner, J., Schulz, O., Schütz, A. -K., Schwingenheuer, B., Selivanenko, O., Shevchik, E., Shirchenko, M., Simgen, H., Smolnikov, A., Stanco, L., Vanhoefer, L., Vasenko, A. A., Veresnikova, A., von Sturm, K., Wagner, V., Walter, M., Wegmann, A., Wester, T., Wiesinger, C., Wojcik, M., Yanovich, E., Zhitnikov, I., Zhukov, S. V., Zinatulina, D., Zuber, K., and Zuzel, G.
Subjects: High Energy Physics - Experiment (hep-ex), Physics - Instrumentation and Detectors, FOS: Physical sciences, Instrumentation and Detectors (physics.ins-det), Nuclear Experiment (nucl-ex), Nuclear Experiment, High Energy Physics - Experiment
Abstract: The Standard Model of particle physics cannot explain the dominance of matter over anti-matter in our Universe. In many model extensions this is a very natural consequence of neutrinos being their own anti-particles (Majorana particles) which implies that a lepton number violating radioactive decay named neutrinoless double beta ($0\nu\beta\beta$) decay should exist. The detection of this extremely rare hypothetical process requires utmost suppression of any kind of backgrounds. The GERDA collaboration searches for $0\nu\beta\beta$ decay of $^{76}$Ge ($^{76}\rm{Ge} \rightarrow\,^{76}\rm{Se} + 2e^-$) by operating bare detectors made from germanium with enriched $^{76}$Ge fraction in liquid argon. Here, we report on first data of GERDA Phase II. A background level of $\approx10^{-3}$ cts/(keV$\cdot$kg$\cdot$yr) has been achieved which is the world-best if weighted by the narrow energy-signal region of germanium detectors. Combining Phase I and II data we find no signal and deduce a new lower limit for the half-life of $5.3\cdot10^{25}$ yr at 90 % C.L. Our sensitivity of $4.0\cdot10^{25}$ yr is competitive with the one of experiments with significantly larger isotope mass. GERDA is the first $0\nu\beta\beta$ experiment that will be background-free up to its design exposure. This progress relies on a novel active veto system, the superior germanium detector energy resolution and the improved background recognition of our new detectors. The unique discovery potential of an essentially background-free search for $0\nu\beta\beta$ decay motivates a larger germanium experiment with higher sensitivity., Comment: 14 pages, 9 figures, 1 table; ; data, figures and images available at http://www.mpi-hd.mpg/gerda/public
Published: 2017
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22. Limit on the radiative neutrinoless double electron capture of 36Ar from GERDA Phase I

Author: Agostini, M, Allardt, M, Bakalyarov, AM, Balata, M, Barabanov, I, Barros, N, Baudis, L, Bauer, C, Bellotti, E, Belogurov, S, Belyaev, ST, Benato, G, Bettini, A, Bezrukov, L, Bode, T, Borowicz, D, Brudanin, V, Brugnera, R, Caldwell, A, Cattadori, C, Chernogorov, A, D’Andrea, V, Demidova, EV, di Vacri, A, Domula, A, Doroshkevich, E, Egorov, V, Falkenstein, R, Fedorova, O, Freund, K, Frodyma, N, Gangapshev, A, Garfagnini, A, Gooch, C, Grabmayr, P, Gurentsov, V, Gusev, K, Hakenmüller, J, Hegai, A, Heisel, M, Hemmer, S, Heusser, G, Hofmann, W, Hult, M, Inzhechik, LV, Csáthy, J Janicskó, Jochum, J, Junker, M, Kazalov, V, Kihm, T, Kirpichnikov, IV, Kirsch, A, Kish, A, Klimenko, A, Kneißl, R, Knöpfle, KT, Kochetov, O, Kornoukhov, VN, Kuzminov, VV, Laubenstein, M, Lazzaro, A, Lebedev, VI, Lehnert, B, Liao, HY, Lindner, M, Lippi, I, Lubashevskiy, A, Lubsandorzhiev, B, Lutter, G, Macolino, C, Majorovits, B, Maneschg, W, Medinaceli, E, Miloradovic, M, Mingazheva, R, Misiaszek, M, Moseev, P, Nemchenok, I, Palioselitis, D, Panas, K, Pandola, L, Pelczar, K, Pullia, A, Riboldi, S, Rumyantseva, N, Sada, C, Salamida, F, Salathe, M, Schmitt, C, Schneider, B, Schönert, S, Schreiner, J, Schütz, A-K, Schulz, O, Schwingenheuer, B, Selivanenko, O, Shirchenko, M, Simgen, H, Smolnikov, A, and Stanco, L
Subjects: Quantum Physics, Particle and Plasma Physics, hep-ex, Molecular, Nuclear, nucl-ex, Atomic, Nuclear & Particles Physics
Abstract: Neutrinoless double electron capture is a process that, if detected, would give evidence of lepton number violation and the Majorana nature of neutrinos. A search for neutrinoless double electron capture of 36Ar has been performed with germanium detectors installed in liquid argon using data from PhaseI of the GERmanium Detector Array (Gerda) experiment at the Gran Sasso Laboratory of INFN, Italy. No signal was observed and an experimental lower limit on the half-life of the radiative neutrinoless double electron capture of 36Ar was established: T1 / 2> 3.6 × 1021 years at 90% CI.
Published: 2016

23. Flux modulations seen by the muon veto of the Gerda experiment

Author: Agostini, M, Balata, M, D'Andrea, V, di Vacri, A, Ioannucci, L, Junker, M, Laubenstein, M, Macolino, C, Pandola, L, Borowicz, D, Frodyma, N, Misiaszek, M, Panas, K, Pelczar, K, Wojcik, M, Zuzel, G, Allardt, M, Barros, N, Domula, A, Lehnert, B, Schneider, B, Wester, T, Wilsenach, H, Zuber, K, Brudanin, V, Egorov, V, Gusev, K, Klimenko, A, Kochetov, O, Lubashevskiy, A, Nemchenok, I, Rumyantseva, N, Shevchik, E, Shirchenko, M, Zhitnikov, I, Zinatulina, D, Hult, M, Lutter, G, Bauer, C, Gangapshev, A, Heisel, M, Hofmann, W, Kihm, T, Kirsch, A, Knöpfle, KT, Lindner, M, Maneschg, W, Salathe, M, Schreiner, J, Schwingenheuer, B, Simgen, H, Smolnikov, A, Stepaniuk, M, Strecker, H, Wagner, V, Wegmann, A, Bellotti, E, Cattadori, C, Pullia, A, Riboldi, S, Barabanov, I, Belogurov, S, Bezrukov, L, Doroshkevich, E, Fedorova, O, Gurentsov, V, Inzhechik, LV, Kazalov, V, Kornoukhov, VN, Kuzminov, VV, Lubsandorzhiev, B, Moseev, P, Selivanenko, O, Veresnikova, A, Yanovich, E, Chernogorov, A, Demidova, EV, Kirpichnikov, IV, Vasenko, AA, Bakalyarov, AM, Belyaev, ST, Lebedev, VI, Zhukov, SV, Becerici-Schmidt, N, Caldwell, A, Liao, HY, Majorovits, B, Palioselitis, D, Schulz, O, Vanhoefer, L, Bode, T, Janicsk'o Cs'athy, J, Lazzaro, A, Schönert, S, Wiesinger, C, Bettini, A, Brugnera, R, Garfagnini, A, Hemmer, S, and Medinaceli, E
Subjects: Particle and Plasma Physics, hep-ex, Muon interaction, Molecular, Nuclear, Underground experiment, Cosmic rays, physics.ins-det, Atomic, Nuclear & Particles Physics, Astronomical and Space Sciences, Water cherenkov detector
Abstract: The GERDA experiment at LNGS of INFN is equipped with an active muon veto. The main part of the system is a water Cherenkov veto with 66PMTs in the water tank surrounding the GERDA cryostat. The muon flux recorded by this veto shows a seasonal modulation. Two causes have been identified: (i) secondary muons from the CNGS neutrino beam (2.2%) and (ii) a temperature modulation of the atmosphere (1.4%). A mean cosmic muon rate of Iμ0=(3.477±0.002stat±0.067sys)×10−4/(s · m2) was found in good agreement with other experiments at LNGS. Combining the present result with those from previous experiments at LNGS the effective temperature coefficient αT,Lngs is determined to 0.93 ± 0.03. A fit of the temperature coefficients measured at various underground sites yields a kaon to pion ratio rK/π of 0.10 ± 0.03.
Published: 2016

24. A measurement of AFBb in lifetime tagged heavy flavour Z decays

Author: Buskulic, D., Casper, D., de Bonis, I., Decamp, D., Ghez, P., Goy, C., Lees, J. P., Minard, M. N., Odier, P., Pietrzyk, B., Ariztizabal, F., Chmeissani, M., Crespo, J. M., Efthymiopoulos, I., Fernandez, E., Fernandez Bosman, M., Gaitan, V., Garrido, L. l., Martinez, M., Mattison, T., Orteu, S., Pacheco, A., Padilla, C., Palla, F., Pascual, A., Perlas, J. A., Teubert, F., Creanza, D., de Palma, M., Farilla, A., Iaselli, G., Maggi, G., Marinelli, N., Natali, S., Nuzzo, S., Ranieri, A., Raso, G., Romano, F., Ruggieri, F., Selvaggi, G., Silvestris, L., Tempesta, P., Zito, G., Chai, Y., Huang, D., Huang, X., Lin, J., Wang, T., Xie, Y., Xu, D., Xu, R., Zhang, J., Zhang, L., Zhao, W., Bonvicini, G., Boudreau, J., Comas, P., Coyle, P., Drevermann, H., Engelhardt, A., Forty, R. W., Ganis, G., Gay, C., Girone, M., Hagelberg, R., Harvey, J., Jacobsen, R., Jost, B., Knobloch, J., Lehraus, I., Maggi, M., Markou, C., Mato, P., Meinhard, H., Minten, A., Miquel, R., Palazzi, P., Pater, J. R., Perrodo, P., Pusztaszeri, J. F., Ranjard, F., Rolandi, L., Rothberg, J., Saich, M., Schlatter, D., Schmelling, M., Tejessy, W., Tomalin, I. R., Veenhof, R., Venturi, A., Wachsmuth, H., Wasserbaech, S., Wiedenmann, W., Wildish, T., Witzeling, W., Wotschack, J., Ajaltouni, Z., Bardadin Otwinowska, M., Barres, A., Boyer, C., Falvard, A., Gay, P., Guicheney, C., Henrard, P., Jousset, J., Michel, B., Montret, J. C., Pallin, D., Perret, P., Podlyski, F., Proriol, J., Saadi, F., Fearnley, T., Hansen, J. B., Hansen, J. D., Hansen, J. R., Hansen, P. H., Johnson, S. D., Møllerud, R., Nilsson, B. S., Kyriakis, A., Simopoulou, E., Siotis, I., Vayaki, A., Zachariadou, K., Blondel, A., Bonneaud, G., Brient, J. C., Bourdon, P., Passalacqua, L., Rougé, A., Rumpf, M., Tanaka, R., Valassi, A., Verderi, M., Videau, H., Candlin, D. J., Parsons, M. I., Veitch, E., Focardi, E., Parrini, G., Corden, M., Delfino, M., Georgiopoulos, C., Jaffe, D. E., Levinthal, D., Antonelli, A., Nencivenni, G., Bologna, G., Bossi, F., Campana, P., Capon, G., Cerutti, F., Chiarella, V., Felici, G., Laurelli, P., Mannocchi, G., Murtas, F., Murtas, G. P., Pepe Altarelli, M., Salomone, S., Colrain, P., Ten Have, I., Knowles, I. G., Lynch, J. G., Maitland, W., Morton, W. T., Raine, C., Reeves, P., Scarr, J. M., Smith, K., Smith, M. G., Thompson, A. S., Thorn, S., Turnbull, R. M., Becker, U., Braun, O., Geweniger, C., Hanke, P., Hepp, V., Kluge, E. E., Putzer, A., Rensch, B., Schmidt, M., Stenzel, H., Tittel, K., Wunsch, M., Beuselinck, R., Binnie, D. M., Cameron, W., Cattaneo, M., Colling, D. J., Dornan, P. J., Hassard, J. F., Konstantinidis, N., Moneta, L., Moutoussi, A., Nash, J., Payne, D. G., San Martin, G., Sedgbeer, J. K., Wright, A. G., Girtler, P., Kuhn, D., Rudolph, G., Vogl, R., Bowdery, C. K., Brodbeck, T. J., Finch, A. J., Foster, F., Hughes, G., Jackson, D., Keemer, N. R., Nuttall, M., Patel, A., Sloan, T., Snow, S. W., Whelan, E. P., Galla, A., Greene, A. M., Kleinknecht, K., Raab, J., Renk, B., Sander, H. G., Schmidt, H., Walther, S. M., Wanke, R., Wolf, B., Bencheikh, A. M., Benchouk, C., Bonissent, A., Calvet, D., Carr, J., Diaconu, C., Etienne, F., Nicod, D., Payre, P., Roos, L., Rousseau, D., Schwemling, P., Talby, M., Adlung, S., Assmann, R., Bauer, C., Blum, W., Brown, D., Cattaneo, P., Dehning, B., Dietl, H., Dydak, F., Frank, M., Halley, A. W., Jakobs, K., Kroha, H., Lauber, J., Lütjens, G., Lutz, G., Männer, W., Moser, H. G., Richter, R., Schael, S., Schröder, J., Schwarz, A. S., Settles, R., Seywerd, H., Stierlin, U., Stiegler, U., Denis, R. S. t., Wolf, G., Alemany, R., Boucrot, J., Callot, O., Cordier, A., Courault, F., Davier, M., Duflot, L., Grivaz, J. F., Heusse, P. h., Janot, P., Jacquet, M., Kimtr19, D. W., Le Diberder, F., Lefrançois, J., Lutz, A. M., Musolino, G., Nikolic, I., Park, H. J., Park, I. C., Simion, S., Schune, M. H., Veillet, J. J., Videau, I., Abbaneo, D., Bagliesi, G., Batignani, G., Bottigli, U., Bozzi, C., Calderini, G., Carpinelli, M., Ciocci, M. A., Ciulli, V., Dell'Orso, R., Ferrante, I., Fidecaro, F., Foà, L., Forti, F., Giassi, A., Giorgi, M. A., Gregorio, Anna, Ligabue, F., Lusiani, A., Marrocchesi, P. S., Martin, E. B., Messineo, A., Rizzo, G., Sanguinetti, G., Spagnolo, P., Steinberger, J., Tenchini, R., Tonelli, G., Triggiani, G., Vannini, C., Verdini, P. G., Walsh, J., Betteridge, A. P., Gao, Y., Green, M. G., Johnson, D. L., March, P. V., Medcalf, T., Mir, L. l. M., Quazi, I. S., Strong, J. A., Bertin, V., Botterill, D. R., Clifft, R. W., Edgecock, T. R., Haywood, S., Edwards, M., Norton, P. R., Thompson, J. C., Bloch Devaux, B., Colas, P., Duarte, H., Emery, S., Kozanecki, W., Lançon, E., Lemaire, M. C., Locci, E., Marx, B., Perez, P., Rander, J., Renardy, J. F., Rosowsky, A., Roussarie, A., Schuller, J. P., Schwindling, J., Si Mohand, D., Vallage, B., Johnson, R. P., Litke, A. M., Taylor, G., Wear, J., Beddall, A., Booth, C. N., Cartwright, S., Combley, F., Dawson, I., Koksal, A., Rankin, C., Thompson, L. F., Böhrer, A., Brandt, S., Cowan, G., Feigl, E., Grupen, C., Lutters, G., Minguet Rodriguez, J., Rivera, F., Saraiva, P., Schäfer, U., Smolik, L., Bosisio, Luciano, della Marina, R., Giannini, Gianrossano, Gobbo, B., Pitis, L., Ragusa, F., Bellantoni, L., Conway, J. S., Feng, Z., Ferguson, D. P. S., Gao, Y. S., Grahl, J., Harton, J. L., Hayes, O. J., Hu, H., Nachtman, J. M., Pan, Y. B., Saadi, Y., Schmitt, M., Scott, I., Sharma, V., Turk, J. D., Walsh, A. M., Weber, F. V., Sau Lan, Wu, Wu, X., Yamartino, J. M., Zheng, M., Zobernig, G., 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 de Physique Corpusculaire - Clermont-Ferrand (LPC), Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-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), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), 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), ALEPH, Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), 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), Buskulic, D., Casper, D., de Bonis, I., Decamp, D., Ghez, P., Goy, C., Lees, J. P., Minard, M. N., Odier, P., Pietrzyk, B., Ariztizabal, F., Chmeissani, M., Crespo, J. M., Efthymiopoulos, I., Fernandez, E., Fernandez Bosman, M., Gaitan, V., Garrido, L. l., Martinez, M., Mattison, T., Orteu, S., Pacheco, A., Padilla, C., Palla, F., Pascual, A., Perlas, J. A., Teubert, F., Creanza, D., de Palma, M., Farilla, A., Iaselli, G., Maggi, G., Marinelli, N., Natali, S., Nuzzo, S., Ranieri, A., Raso, G., Romano, F., Ruggieri, F., Selvaggi, G., Silvestris, L., Tempesta, P., Zito, G., Chai, Y., Huang, D., Huang, X., Lin, J., Wang, T., Xie, Y., Xu, D., Xu, R., Zhang, J., Zhang, L., Zhao, W., Bonvicini, G., Boudreau, J., Comas, P., Coyle, P., Drevermann, H., Engelhardt, A., Forty, R. W., Ganis, G., Gay, C., Girone, M., Hagelberg, R., Harvey, J., Jacobsen, R., Jost, B., Knobloch, J., Lehraus, I., Maggi, M., Markou, C., Mato, P., Meinhard, H., Minten, A., Miquel, R., Palazzi, P., Pater, J. R., Perrodo, P., Pusztaszeri, J. F., Ranjard, F., Rolandi, L., Rothberg, J., Saich, M., Schlatter, D., Schmelling, M., Tejessy, W., Tomalin, I. R., Veenhof, R., Venturi, A., Wachsmuth, H., Wasserbaech, S., Wiedenmann, W., Wildish, T., Witzeling, W., Wotschack, J., Ajaltouni, Z., Bardadin Otwinowska, M., Barres, A., Boyer, C., Falvard, A., Gay, P., Guicheney, C., Henrard, P., Jousset, J., Michel, B., Montret, J. C., Pallin, D., Perret, P., Podlyski, F., Proriol, J., Saadi, F., Fearnley, T., Hansen, J. B., Hansen, J. D., Hansen, J. R., Hansen, P. H., Johnson, S. D., Møllerud, R., Nilsson, B. S., Kyriakis, A., Simopoulou, E., Siotis, I., Vayaki, A., Zachariadou, K., Blondel, A., Bonneaud, G., Brient, J. C., Bourdon, P., Passalacqua, L., Rougé, A., Rumpf, M., Tanaka, R., Valassi, A., Verderi, M., Videau, H., Candlin, D. J., Parsons, M. I., Veitch, E., Focardi, E., Parrini, G., Corden, M., Delfino, M., Georgiopoulos, C., Jaffe, D. E., Levinthal, D., Antonelli, A., Nencivenni, G., Bologna, G., Bossi, F., Campana, P., Capon, G., Cerutti, F., Chiarella, V., Felici, G., Laurelli, P., Mannocchi, G., Murtas, F., Murtas, G. P., Pepe Altarelli, M., Salomone, S., Colrain, P., Ten Have, I., Knowles, I. G., Lynch, J. G., Maitland, W., Morton, W. T., Raine, C., Reeves, P., Scarr, J. M., Smith, K., Smith, M. G., Thompson, A. S., Thorn, S., Turnbull, R. M., Becker, U., Braun, O., Geweniger, C., Hanke, P., Hepp, V., Kluge, E. E., Putzer, A., Rensch, B., Schmidt, M., Stenzel, H., Tittel, K., Wunsch, M., Beuselinck, R., Binnie, D. M., Cameron, W., Cattaneo, M., Colling, D. J., Dornan, P. J., Hassard, J. F., Konstantinidis, N., Moneta, L., Moutoussi, A., Nash, J., Payne, D. G., San Martin, G., Sedgbeer, J. K., Wright, A. G., Girtler, P., Kuhn, D., Rudolph, G., Vogl, R., Bowdery, C. K., Brodbeck, T. J., Finch, A. J., Foster, F., Hughes, G., Jackson, D., Keemer, N. R., Nuttall, M., Patel, A., Sloan, T., Snow, S. W., Whelan, E. 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6238 2011 Passalacqua Luca/F 5127 2011 Murtas Fabrizio/B 5729 2012 S. t., Lees, J, Minard, M, Crespo, J, Garrido, L, Perlas, J, Forty, R, Pater, J, Pusztaszeri, J, Rolandi, L, Tomalin, I, Montret, J, Hansen, J, Hansen, P, Johnson, S, Brient, J, Candlin, D, Parsons, M, Jaffe, D, Murtas, G, Knowles, I, Lynch, J, Morton, W, Scarr, J, Smith, M, Turnbull, R, Kluge, E, Binnie, D, Colling, D, Dornan, P, Hassard, J, Payne, D, Sedgbeer, J, Wright, A, Bowdery, C, Brodbeck, T, Finch, A, Keemer, N, Snow, S, Whelan, E, Greene, A, Sander, H, Walther, S, Bencheikh, A, Halley, A, Moser, H, Grivaz, J, Kimtr, D, Lutz, A, Park, H, Park, I, Schuene, M, Veillet, J, Ciocci, M, Giorgi, M, Ligabue, F, Lusiani, A, Martin, E, Verdini, P, Betteridge, A, Green, M, Johnson, D, March, P, Mir, L, Strong, J, Botterill, D, Clifft, R, Edgecock, T, Norton, P, Thompson, J, Lemaire, M, Renardy, J, Schuller, J, Johnson, R, Litke, A, Thompson, L, Ferguson, D, Harton, J, Hayes, O, Nachtman, J, Pan, Y, Turk, J, Walsh, A, Weber, F, Wu, S, and Yamartino, J
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Electron–positron annihilation, media_common.quotation_subject, Hadron, Charge density, Elementary particle, 01 natural sciences, Bottom quark, Asymmetry, ALEPH Experiment, Nuclear physics, Particle decay, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], 010306 general physics, ALEPH experiment, Particle Physics - Experiment, media_common
Abstract: A new measurement of the forward-backward asymmetry in Z --> bbBAR decays is presented. Hadrons from b decays are tagged using their long lifetimes. The b quark charge and direction are reconstructed with a hemisphere charge algorithm. The asymmetry and reconstructed b hemisphere charge are measured in the 69 pb-1 of data collected by ALEPH during 1991, 1992 and 1993. They are used to extract sin2theta(w)eff, which is determined to be 0.2315 +/- 0.0016 (stat.) +/- 0.0009 (syst.), corresponding to an A(FB)b of 0.00992 +/- 0.0084 (stat.) +/- 0.0046 (stat.).
Published: 1994

25. Measurement of the ratio of branching fractions B(B0→K⁎0γ)/B(Bs0→ϕγ) and the direct CP asymmetry in B0→K⁎0γ

Author: Aaij, R., Abellan Beteta, C., Adametz, A., Adeva, B., Adinolfi, M., Adrover, C., Affolder, A., Ajaltouni, Z., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Alvarez Cartelle, P., Alves Jr., A.A., Amato, S., Amhis, Y., Anderlini, L., Anderson, J., Appleby, R.B., Aquines Gutierrez, O., Archilli, F., Artamonov, A., Artuso, M., Aslanides, E., Auriemma, G., Bachmann, S., Back, J.J., Baesso, C., Balagura, V., Baldini, W., Barlow, R.J., Barschel, C., Barsuk, S., Barter, W., Bates, A., Bauer, C., Bauer, Th., Bay, A., Beddow, J., Bediaga, I., Belogurov, S., Belous, K., Belyaev, I., Ben-Haim, E., Benayoun, M., Bencivenni, G., Benson, S., Benton, J., Berezhnoy, A., Bernet, R., Bettler, M.-O., van Beuzekom, M., Bien, A., Bifani, S., Bird, T., Bizzeti, A., Bjørnstad, P.M., Blake, T., Blanc, F., Blanks, C., Blouw, J., Blusk, S., Bobrov, A., Bocci, V., Bondar, A., Bondar, N., Bonivento, W., Borghi, S., Borgia, A., Bowcock, T.J.V., Bozzi, C., Brambach, T., van den Brand, J., Bressieux, J., Brett, D., Britsch, M., Britton, T., Brook, N.H., Brown, H., Büchler-Germann, A., Burducea, I., Bursche, A., Buytaert, J., Cadeddu, S., Callot, O., Calvi, M., Calvo Gomez, M., Camboni, A., Campana, P., Carbone, A., Carboni, G., Cardinale, R., Cardini, A., Carson, L., Carvalho Akiba, K., Casse, G., Cattaneo, M., Cauet, Ch., Charles, M., Charpentier, Ph., Chen, P., Chiapolini, N., Chrzaszcz, M., Ciba, K., Cid Vidal, X., Ciezarek, G., Clarke, P.E.L., Clemencic, M., Cliff, H.V., Closier, J., Coca, C., Coco, V., Cogan, J., Cogneras, E., Collins, P., Comerma-Montells, A., Contu, A., Cook, A., Coombes, M., Corti, G., Couturier, B., Cowan, G.A., Craik, D., Cunliffe, S., Currie, R., DʼAmbrosio, C., David, P., David, P.N.Y., De Bonis, I., De Bruyn, K., De Capua, S., De Cian, M., De Miranda, J.M., De Paula, L., De Simone, P., Decamp, D., Deckenhoff, M., Degaudenzi, H., Del Buono, L., Deplano, C., Derkach, D., Deschamps, O., Dettori, F., Dickens, J., Dijkstra, H., Diniz Batista, P., 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Monteil, S., Moran, D., Morawski, P., Mountain, R., Mous, I., Muheim, F., Müller, K., Muresan, R., Muryn, B., Muster, B., Mylroie-Smith, J., Naik, P., Nakada, T., Nandakumar, R., Nasteva, I., Needham, M., Neufeld, N., Nguyen, A.D., Nguyen-Mau, C., Nicol, M., Niess, V., Nikitin, N., Nikodem, T., Nomerotski, A., Novoselov, A., Oblakowska-Mucha, A., Obraztsov, V., Oggero, S., Ogilvy, S., Okhrimenko, O., Oldeman, R., Orlandea, M., Otalora Goicochea, J.M., Owen, P., Pal, B.K., Palano, A., Palutan, M., Panman, J., Papanestis, A., Pappagallo, M., Parkes, C., Parkinson, C.J., Passaleva, G., Patel, G.D., Patel, M., Patrick, G.N., Patrignani, C., Pavel-Nicorescu, C., Pazos Alvarez, A., Pellegrino, A., Penso, G., Pepe Altarelli, M., Perazzini, S., Perego, D.L., Perez Trigo, E., Pérez-Calero Yzquierdo, A., Perret, P., Perrin-Terrin, M., Pessina, G., Petrolini, A., Phan, A., Picatoste Olloqui, E., Pie Valls, B., Pietrzyk, B., Pilař, T., Pinci, D., Playfer, S., Plo Casasus, M., Polci, F., Polok, G., Poluektov, A., Polycarpo, E., Popov, D., Popovici, B., Potterat, C., Powell, A., Prisciandaro, J., Pugatch, V., Puig Navarro, A., Qian, W., Rademacker, J.H., Rakotomiaramanana, B., Rangel, M.S., Raniuk, I., Rauschmayr, N., Raven, G., Redford, S., Reid, M.M., dos Reis, A.C., Ricciardi, S., Richards, A., Rinnert, K., Roa Romero, D.A., Robbe, P., Rodrigues, E., Rodriguez Perez, P., Rogers, G.J., Roiser, S., Romanovsky, V., Romero Vidal, A., Rosello, M., Rouvinet, J., Ruf, T., Ruiz, H., Sabatino, G., Saborido Silva, J.J., Sagidova, N., Sail, P., Saitta, B., Salzmann, C., Sanmartin Sedes, B., Sannino, M., Santacesaria, R., Santamarina Rios, C., Santinelli, R., Santovetti, E., Sapunov, M., Sarti, A., Satriano, C., Satta, A., Savrie, M., Savrina, D., Schaack, P., Schiller, M., Schindler, H., Schleich, S., Schlupp, M., Schmelling, M., Schmidt, B., Schneider, O., Schopper, A., Schune, M.-H., Schwemmer, R., Sciascia, B., Sciubba, A., Seco, M., Semennikov, A., Senderowska, K., Sepp, I., Serra, N., Serrano, J., Seyfert, P., Shapkin, M., Shapoval, I., Shatalov, P., Shcheglov, Y., Shears, T., Shekhtman, L., Shevchenko, O., Shevchenko, V., Shires, A., Silva Coutinho, R., Skwarnicki, T., Smith, N.A., Smith, E., Smith, M., Sobczak, K., Soler, F.J.P., Solomin, A., Soomro, F., Souza, D., Souza De Paula, B., Spaan, B., Sparkes, A., Spradlin, P., Stagni, F., Stahl, S., Steinkamp, O., Stoica, S., Stone, S., Storaci, B., Straticiuc, M., Straumann, U., Subbiah, V.K., Swientek, S., Szczekowski, M., Szczypka, P., Szumlak, T., TʼJampens, S., Teklishyn, M., Teodorescu, E., Teubert, F., Thomas, C., Thomas, E., van Tilburg, J., Tisserand, V., Tobin, M., Tolk, S., Topp-Joergensen, S., Torr, N., Tournefier, E., Tourneur, S., Tran, M.T., Tsaregorodtsev, A., Tuning, N., Ubeda Garcia, M., Ukleja, A., Uwer, U., Vagnoni, V., Valenti, G., Vazquez Gomez, R., Vazquez Regueiro, P., Vecchi, S., Velthuis, J.J., Veltri, M., Veneziano, G., Vesterinen, M., Viaud, B., Videau, I., Vieira, D., Vilasis-Cardona, X., Visniakov, J., Vollhardt, A., Volyanskyy, D., Voong, D., Vorobyev, A., Vorobyev, V., Voß, C., Voss, H., Waldi, R., Wallace, R., Wandernoth, S., Wang, J., Ward, D.R., Watson, N.K., Webber, A.D., Websdale, D., Whitehead, M., Wicht, J., Wiedner, D., Wiggers, L., Wilkinson, G., Williams, M.P., Williams, M., Wilson, F.F., Wishahi, J., Witek, M., Witzeling, W., Wotton, S.A., Wright, S., Wu, S., Wyllie, K., Xie, Y., Xing, F., Xing, Z., Yang, Z., Young, R., Yuan, X., Yushchenko, O., Zangoli, M., Zavertyaev, M., Zhang, F., Zhang, L., Zhang, W.C., Zhang, Y., Zhelezov, A., Zhong, L., and Zvyagin, A.
Subjects: Nuclear and High Energy Physics
Published: 2013
Full Text: View/download PDF

26. Measurement of the ratio of prompt χc to J/ψ production in pp collisions at s=7 TeV

Author: Aaij, R., Abellan Beteta, C., Adeva, B., Adinolfi, M., Adrover, C., Affolder, A., Ajaltouni, Z., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Alvarez Cartelle, P., Alves Jr, A.A., Amato, S., Amhis, Y., Anderson, J., Appleby, R.B., Aquines Gutierrez, O., Archilli, F., Arrabito, L., Artamonov, A., Artuso, M., Aslanides, E., Auriemma, G., Bachmann, S., Back, J.J., Balagura, V., Baldini, W., Barlow, R.J., Barschel, C., Barsuk, S., Barter, W., Bates, A., Bauer, C., Bauer, Th., Bay, A., Bediaga, I., Belogurov, S., Belous, K., Belyaev, I., Ben-Haim, E., Benayoun, M., Bencivenni, G., Benson, S., Benton, J., Bernet, R., Bettler, M.-O., van Beuzekom, M., Bien, A., Bifani, S., Bird, T., Bizzeti, A., Bjørnstad, P.M., Blake, T., Blanc, F., Blanks, C., Blouw, J., Blusk, S., Bobrov, A., Bocci, V., Bondar, A., Bondar, N., Bonivento, W., Borghi, S., Borgia, A., Bowcock, T.J.V., Bozzi, C., Brambach, T., van den Brand, J., Bressieux, J., Brett, D., Britsch, M., Britton, T., Brook, N.H., Brown, H., de Bruyn, K., Büchler-Germann, A., Burducea, I., Bursche, A., Buytaert, J., Cadeddu, S., Callot, O., Calvi, M., Calvo Gomez, M., Camboni, A., Campana, P., Carbone, A., Carboni, G., Cardinale, R., Cardini, A., Carson, L., Carvalho Akiba, K., Casse, G., Cattaneo, M., Cauet, Ch., Charles, M., Charpentier, Ph., Chiapolini, N., Ciba, K., Cid Vidal, X., Ciezarek, G., Clarke, P.E.L., Clemencic, M., Cliff, H.V., Closier, J., Coca, C., Coco, V., Cogan, J., Collins, P., Comerma-Montells, A., Contu, A., Cook, A., Coombes, M., Corti, G., Couturier, B., Cowan, G.A., Currie, R., DʼAmbrosio, C., David, P., David, P.N.Y., De Bonis, I., De Capua, S., De Cian, M., De Lorenzi, F., De Miranda, J.M., De Paula, L., De Simone, P., Decamp, D., Deckenhoff, M., Degaudenzi, H., Del Buono, L., Deplano, C., Derkach, D., Deschamps, O., Dettori, F., Dickens, J., Dijkstra, H., Diniz Batista, P., Domingo Bonal, F., Donleavy, S., Dordei, F., Dosil Suárez, A., Dossett, D., Dovbnya, A., Dupertuis, F., Dzhelyadin, R., Dziurda, A., Easo, S., Egede, U., Egorychev, V., Eidelman, S., van Eijk, D., Eisele, F., Eisenhardt, S., Ekelhof, R., Eklund, L., Elsasser, Ch., Elsby, D., Esperante Pereira, D., Falabella, A., Färber, C., Fardell, G., Farinelli, C., Farry, S., Fave, V., Fernandez Albor, V., Ferro-Luzzi, M., Filippov, S., Fitzpatrick, C., Fontana, M., Fontanelli, F., Forty, R., Francisco, O., Frank, M., Frei, C., Frosini, M., Furcas, S., Gallas Torreira, A., Galli, D., Gandelman, M., Gandini, P., Gao, Y., Garnier, J.-C., Garofoli, J., Garra Tico, J., Garrido, L., Gascon, D., Gaspar, C., Gauld, R., Gauvin, N., Gersabeck, M., Gershon, T., Ghez, Ph., Gibson, V., Gligorov, V.V., Göbel, C., Golubkov, D., Golutvin, A., Gomes, A., Gordon, H., Grabalosa Gándara, M., Graciani Diaz, R., Granado Cardoso, L.A., Graugés, E., Graziani, G., Grecu, A., Greening, E., Gregson, S., Gui, B., Gushchin, E., Guz, Yu., Gys, T., Hadjivasiliou, C., Haefeli, G., Haen, C., Haines, S.C., Hampson, T., Hansmann-Menzemer, S., Harji, R., Harnew, N., Harrison, J., Harrison, P.F., Hartmann, T., He, J., Heijne, V., Hennessy, K., Henrard, P., Hernando Morata, J.A., van Herwijnen, E., Hicks, E., Holubyev, K., Hopchev, P., Hulsbergen, W., Hunt, P., Huse, T., Huston, R.S., Hutchcroft, D., Hynds, D., Iakovenko, V., Ilten, P., Imong, J., Jacobsson, R., Jaeger, A., Jahjah Hussein, M., Jans, E., Jansen, F., Jaton, P., Jean-Marie, B., Jing, F., John, M., Johnson, D., Jones, C.R., Jost, B., Kaballo, M., Kandybei, S., Karacson, M., Karbach, T.M., Keaveney, J., Kenyon, I.R., Kerzel, U., Ketel, T., Keune, A., Khanji, B., Kim, Y.M., Knecht, M., Koopman, R.F., Koppenburg, P., Korolev, M., Kozlinskiy, A., Kravchuk, L., Kreplin, K., Kreps, M., Krocker, G., Krokovny, P., Kruse, F., Kruzelecki, K., Kucharczyk, M., Kudryavtsev, V., Kvaratskheliya, T., La Thi, V.N., Lacarrere, D., Lafferty, G., Lai, A., Lambert, D., Lambert, R.W., Lanciotti, E., Lanfranchi, G., Langenbruch, C., Latham, T., Lazzeroni, C., Le Gac, R., van Leerdam, J., Lees, J.-P., Lefèvre, R., Leflat, A., Lefrançois, J., Leroy, O., Lesiak, T., Li, L., Li Gioi, L., Lieng, M., Liles, M., Lindner, R., Linn, C., Liu, B., Liu, G., von Loeben, J., Lopes, J.H., Lopez Asamar, E., Lopez-March, N., Lu, H., Luisier, J., Mac Raighne, A., Machefert, F., Machikhiliyan, I.V., Maciuc, F., Maev, O., Magnin, J., Malde, S., Mamunur, R.M.D., Manca, G., Mancinelli, G., Mangiafave, N., Marconi, U., Märki, R., Marks, J., Martellotti, G., Martens, A., Martin, L., Martín Sánchez, A., Martinelli, M., Martinez Santos, D., Massafferri, A., Mathe, Z., Matteuzzi, C., Matveev, M., Maurice, E., Maynard, B., Mazurov, A., McGregor, G., McNulty, R., Meissner, M., Merk, M., Merkel, J., Miglioranzi, S., Milanes, D.A., Minard, M.-N., Molina Rodriguez, J., Monteil, S., Moran, D., Morawski, P., Mountain, R., Mous, I., Muheim, F., Müller, K., Muresan, R., Muryn, B., Muster, B., Mylroie-Smith, J., Naik, P., Nakada, T., Nandakumar, R., Nasteva, I., Needham, M., Neufeld, N., Nguyen, A.D., Nguyen-Mau, C., Nicol, M., Niess, V., Nikitin, N., Nomerotski, A., Novoselov, A., Oblakowska-Mucha, A., Obraztsov, V., Oggero, S., Ogilvy, S., Okhrimenko, O., Oldeman, R., Orlandea, M., Otalora Goicochea, J.M., Owen, P., Pal, K., Palacios, J., Palano, A., Palutan, M., Panman, J., Papanestis, A., Pappagallo, M., Parkes, C., Parkinson, C.J., Passaleva, G., Patel, G.D., Patel, M., Paterson, S.K., Patrick, G.N., Patrignani, C., Pavel-Nicorescu, C., Pazos Alvarez, A., Pellegrino, A., Penso, G., Pepe Altarelli, M., Perazzini, S., Perego, D.L., Perez Trigo, E., Pérez-Calero Yzquierdo, A., Perret, P., Perrin-Terrin, M., Pessina, G., Petrolini, A., Phan, A., Picatoste Olloqui, E., Pie Valls, B., Pietrzyk, B., Pilař, T., Pinci, D., Plackett, R., Playfer, S., Plo Casasus, M., Polok, G., Poluektov, A., Polycarpo, E., Popov, D., Popovici, B., Potterat, C., Powell, A., Prisciandaro, J., Pugatch, V., Puig Navarro, A., Qian, W., Rademacker, J.H., Rakotomiaramanana, B., Rangel, M.S., Raniuk, I., Raven, G., Redford, S., Reid, M.M., dos Reis, A.C., Ricciardi, S., Richards, A., Rinnert, K., Roa Romero, D.A., Robbe, P., Rodrigues, E., Rodrigues, F., Rodriguez Perez, P., Rogers, G.J., Roiser, S., Romanovsky, V., Rosello, M., Rouvinet, J., Ruf, T., Ruiz, H., Sabatino, G., Saborido Silva, J.J., Sagidova, N., Sail, P., Saitta, B., Salzmann, C., Sannino, M., Santacesaria, R., Santamarina Rios, C., Santinelli, R., Santovetti, E., Sapunov, M., Sarti, A., Satriano, C., Satta, A., Savrie, M., Savrina, D., Schaack, P., Schiller, M., Schleich, S., Schlupp, M., Schmelling, M., Schmidt, B., Schneider, O., Schopper, A., Schune, M.-H., Schwemmer, R., Sciascia, B., Sciubba, A., Seco, M., Semennikov, A., Senderowska, K., Sepp, I., Serra, N., Serrano, J., Seyfert, P., Shapkin, M., Shapoval, I., Shatalov, P., Shcheglov, Y., Shears, T., Shekhtman, L., Shevchenko, O., Shevchenko, V., Shires, A., Silva Coutinho, R., Skwarnicki, T., Smith, N.A., Smith, E., Sobczak, K., Soler, F.J.P., Solomin, A., Soomro, F., Souza De Paula, B., Spaan, B., Sparkes, A., Spradlin, P., Stagni, F., Stahl, S., Steinkamp, O., Stoica, S., Stone, S., Storaci, B., Straticiuc, M., Straumann, U., Subbiah, V.K., Swientek, S., Szczekowski, M., Szczypka, P., Szumlak, T., TʼJampens, S., Teodorescu, E., Teubert, F., Thomas, C., Thomas, E., van Tilburg, J., Tisserand, V., Tobin, M., Topp-Joergensen, S., Torr, N., Tournefier, E., Tourneur, S., Tran, M.T., Tsaregorodtsev, A., Tuning, N., Ubeda Garcia, M., Ukleja, A., Urquijo, P., Uwer, U., Vagnoni, V., Valenti, G., Vazquez Gomez, R., Vazquez Regueiro, P., Vecchi, S., Velthuis, J.J., Veltri, M., Viaud, B., Videau, I., Vieira, D., Vilasis-Cardona, X., Visniakov, J., Vollhardt, A., Volyanskyy, D., Voong, D., Vorobyev, A., Voss, H., Waldi, R., Wandernoth, S., Wang, J., Ward, D.R., Watson, N.K., Webber, A.D., Websdale, D., Whitehead, M., Wiedner, D., Wiggers, L., Wilkinson, G., Williams, M.P., Williams, M., Wilson, F.F., Wishahi, J., Witek, M., Witzeling, W., Wotton, S.A., Wyllie, K., Xie, Y., Xing, F., Xing, Z., Yang, Z., Young, R., Yushchenko, O., Zangoli, M., Zavertyaev, M., Zhang, F., Zhang, L., Zhang, W.C., Zhang, Y., Zhelezov, A., Zhong, L., and Zvyagin, A.
Subjects: Nuclear and High Energy Physics
Published: 2012
Full Text: View/download PDF

27. Measurement of the effective Bs0→K+K− lifetime

Author: Aaij, R., Abellan Beteta, C., Adametz, A., Adeva, B., Adinolfi, M., Adrover, C., Affolder, A., Ajaltouni, Z., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Alvarez Cartelle, P., Alves Jr., A.A., Amato, S., Amhis, Y., Anderson, J., Appleby, R.B., Aquines Gutierrez, O., Archilli, F., Artamonov, A., Artuso, M., Aslanides, E., Auriemma, G., Bachmann, S., Back, J.J., Balagura, V., Baldini, W., Barlow, R.J., Barschel, C., Barsuk, S., Barter, W., Bates, A., Bauer, C., Bauer, Th., Bay, A., Beddow, J., Bediaga, I., Belogurov, S., Belous, K., Belyaev, I., Ben-Haim, E., Benayoun, M., Bencivenni, G., Benson, S., Benton, J., Bernet, R., Bettler, M.-O., van Beuzekom, M., Bien, A., Bifani, S., Bird, T., Bizzeti, A., Bjørnstad, P.M., Blake, T., Blanc, F., Blanks, C., Blouw, J., Blusk, S., Bobrov, A., Bocci, V., Bondar, A., Bondar, N., Bonivento, W., Borghi, S., Borgia, A., Bowcock, T.J.V., Bozzi, C., Brambach, T., van den Brand, J., Bressieux, J., Brett, D., Britsch, M., Britton, T., Brook, N.H., Brown, H., Büchler-Germann, A., Burducea, I., Bursche, A., Buytaert, J., Cadeddu, S., Callot, O., Calvi, M., Calvo Gomez, M., Camboni, A., Campana, P., Carbone, A., Carboni, G., Cardinale, R., Cardini, A., Carson, L., Carvalho Akiba, K., Casse, G., Cattaneo, M., Cauet, Ch., Charles, M., Charpentier, Ph., Chen, P., Chiapolini, N., Chrzaszcz, M., Ciba, K., Cid Vidal, X., Ciezarek, G., Clarke, P.E.L., Clemencic, M., Cliff, H.V., Closier, J., Coca, C., Coco, V., Cogan, J., Cogneras, E., Collins, P., Comerma-Montells, A., Contu, A., Cook, A., Coombes, M., Corti, G., Couturier, B., Cowan, G.A., Craik, D., Currie, R., DʼAmbrosio, C., David, P., David, P.N.Y., De Bonis, I., De Bruyn, K., De Capua, S., De Cian, M., De Miranda, J.M., De Paula, L., De Simone, P., Decamp, D., Deckenhoff, M., Degaudenzi, H., Del Buono, L., Deplano, C., Derkach, D., Deschamps, O., Dettori, F., Dickens, J., Dijkstra, H., Diniz Batista, P., Domingo Bonal, F., Donleavy, S., Dordei, F., Dosil Suárez, A., Dossett, D., Dovbnya, A., Dupertuis, F., Dzhelyadin, R., Dziurda, A., Dzyuba, A., Easo, S., Egede, U., Egorychev, V., Eidelman, S., van Eijk, D., Eisele, F., Eisenhardt, S., Ekelhof, R., Eklund, L., El Rifai, I., Elsasser, Ch., Elsby, D., Esperante Pereira, D., Falabella, A., Färber, C., Fardell, G., Farinelli, C., Farry, S., Fave, V., Fernandez Albor, V., Ferro-Luzzi, M., Filippov, S., Fitzpatrick, C., Fontana, M., Fontanelli, F., Forty, R., Francisco, O., Frank, M., Frei, C., Frosini, M., Furcas, S., Gallas Torreira, A., Galli, D., Gandelman, M., Gandini, P., Gao, Y., Garnier, J.-C., Garofoli, J., Garra Tico, J., Garrido, L., Gascon, D., Gaspar, C., Gauld, R., Gauvin, N., Gersabeck, E., Gersabeck, M., Gershon, T., Ghez, Ph., Gibson, V., Gligorov, V.V., Göbel, C., Golubkov, D., Golutvin, A., Gomes, A., Gordon, H., Grabalosa Gándara, M., Graciani Diaz, R., Granado Cardoso, L.A., Graugés, E., Graziani, G., Grecu, A., Greening, E., Gregson, S., Grünberg, O., Gui, B., Gushchin, E., Guz, Yu., Gys, T., Hadjivasiliou, C., Haefeli, G., Haen, C., Haines, S.C., Hampson, T., Hansmann-Menzemer, S., Harnew, N., Harnew, S.T., Harrison, J., Harrison, P.F., Hartmann, T., He, J., Heijne, V., Hennessy, K., Henrard, P., Hernando Morata, J.A., van Herwijnen, E., Hicks, E., Hoballah, M., Hopchev, P., Hulsbergen, W., Hunt, P., Huse, T., Huston, R.S., Hutchcroft, D., Hynds, D., Iakovenko, V., Ilten, P., Imong, J., Jacobsson, R., Jaeger, A., Jahjah Hussein, M., Jans, E., Jansen, F., Jaton, P., Jean-Marie, B., Jing, F., John, M., Johnson, D., Jones, C.R., Jost, B., Kaballo, M., Kandybei, S., Karacson, M., Karbach, T.M., Keaveney, J., Kenyon, I.R., Kerzel, U., Ketel, T., Keune, A., Khanji, B., Kim, Y.M., Knecht, M., Kochebina, O., Komarov, I., Koopman, R.F., Koppenburg, P., Korolev, M., Kozlinskiy, A., Kravchuk, L., Kreplin, K., Kreps, M., Krocker, G., Krokovny, P., Kruse, F., Kruzelecki, K., Kucharczyk, M., Kudryavtsev, V., Kvaratskheliya, T., La Thi, V.N., Lacarrere, D., Lafferty, G., Lai, A., Lambert, D., Lambert, R.W., Lanciotti, E., Lanfranchi, G., Langenbruch, C., Latham, T., Lazzeroni, C., Le Gac, R., van Leerdam, J., Lees, J.-P., Lefèvre, R., Leflat, A., Lefrançois, J., Leroy, O., Lesiak, T., Li, L., Li, Y., Li Gioi, L., Lieng, M., Liles, M., Lindner, R., Linn, C., Liu, B., Liu, G., von Loeben, J., Lopes, J.H., Lopez Asamar, E., Lopez-March, N., Lu, H., Luisier, J., Mac Raighne, A., Machefert, F., Machikhiliyan, I.V., Maciuc, F., Maev, O., Magnin, J., Malde, S., Mamunur, R.M.D., Manca, G., Mancinelli, G., Mangiafave, N., Marconi, U., Märki, R., Marks, J., Martellotti, G., Martens, A., Martin, L., Martín Sánchez, A., Martinelli, M., Martinez Santos, D., Massafferri, A., Mathe, Z., Matteuzzi, C., Matveev, M., Maurice, E., Maynard, B., Mazurov, A., McCarthy, J., McGregor, G., McNulty, R., Meissner, M., Merk, M., Merkel, J., Milanes, D.A., Minard, M.-N., Molina Rodriguez, J., Monteil, S., Moran, D., Morawski, P., Mountain, R., Mous, I., Muheim, F., Müller, K., Muresan, R., Muryn, B., Muster, B., Mylroie-Smith, J., Naik, P., Nakada, T., Nandakumar, R., Nasteva, I., Needham, M., Neufeld, N., Nguyen, A.D., Nguyen-Mau, C., Nicol, M., Niess, V., Nikitin, N., Nikodem, T., Nomerotski, A., Novoselov, A., Oblakowska-Mucha, A., Obraztsov, V., Oggero, S., Ogilvy, S., Okhrimenko, O., Oldeman, R., Orlandea, M., Otalora Goicochea, J.M., Owen, P., Pal, B.K., Palacios, J., Palano, A., Palutan, M., Panman, J., Papanestis, A., Pappagallo, M., Parkes, C., Parkinson, C.J., Passaleva, G., Patel, G.D., Patel, M., Patrick, G.N., Patrignani, C., Pavel-Nicorescu, C., Pazos Alvarez, A., Pellegrino, A., Penso, G., Pepe Altarelli, M., Perazzini, S., Perego, D.L., Perez Trigo, E., Pérez-Calero Yzquierdo, A., Perret, P., Perrin-Terrin, M., Pessina, G., Petrolini, A., Phan, A., Picatoste Olloqui, E., Pie Valls, B., Pietrzyk, B., Pilař, T., Pinci, D., Plackett, R., Playfer, S., Plo Casasus, M., Polci, F., Polok, G., Poluektov, A., Polycarpo, E., Popov, D., Popovici, B., Potterat, C., Powell, A., Prisciandaro, J., Pugatch, V., Puig Navarro, A., Qian, W., Rademacker, J.H., Rakotomiaramanana, B., Rangel, M.S., Raniuk, I., Raven, G., Redford, S., Reid, M.M., dos Reis, A.C., Ricciardi, S., Richards, A., Rinnert, K., Roa Romero, D.A., Robbe, P., Rodrigues, E., Rodrigues, F., Rodriguez Perez, P., Rogers, G.J., Roiser, S., Romanovsky, V., Rosello, M., Rouvinet, J., Ruf, T., Ruiz, H., Sabatino, G., Saborido Silva, J.J., Sagidova, N., Sail, P., Saitta, B., Salzmann, C., Sanmartin Sedes, B., Sannino, M., Santacesaria, R., Santamarina Rios, C., Santinelli, R., Santovetti, E., Sapunov, M., Sarti, A., Satriano, C., Satta, A., Savrie, M., Savrina, D., Schaack, P., Schiller, M., Schindler, H., Schleich, S., Schlupp, M., Schmelling, M., Schmidt, B., Schneider, O., Schopper, A., Schune, M.-H., Schwemmer, R., Sciascia, B., Sciubba, A., Seco, M., Semennikov, A., Senderowska, K., Sepp, I., Serra, N., Serrano, J., Seyfert, P., Shapkin, M., Shapoval, I., Shatalov, P., Shcheglov, Y., Shears, T., Shekhtman, L., Shevchenko, O., Shevchenko, V., Shires, A., Silva Coutinho, R., Skwarnicki, T., Smith, N.A., Smith, E., Smith, M., Sobczak, K., Soler, F.J.P., Solomin, A., Soomro, F., Souza, D., Souza De Paula, B., Spaan, B., Sparkes, A., Spradlin, P., Stagni, F., Stahl, S., Steinkamp, O., Stoica, S., Stone, S., Storaci, B., Straticiuc, M., Straumann, U., Subbiah, V.K., Swientek, S., Szczekowski, M., Szczypka, P., Szumlak, T., TʼJampens, S., Teklishyn, M., Teodorescu, E., Teubert, F., Thomas, C., Thomas, E., van Tilburg, J., Tisserand, V., Tobin, M., Tolk, S., Topp-Joergensen, S., Torr, N., Tournefier, E., Tourneur, S., Tran, M.T., Tsaregorodtsev, A., Tuning, N., Ubeda Garcia, M., Ukleja, A., Uwer, U., Vagnoni, V., Valenti, G., Vazquez Gomez, R., Vazquez Regueiro, P., Vecchi, S., Velthuis, J.J., Veltri, M., Vesterinen, M., Viaud, B., Videau, I., Vieira, D., Vilasis-Cardona, X., Visniakov, J., Vollhardt, A., Volyanskyy, D., Voong, D., Vorobyev, A., Vorobyev, V., Voß, C., Voss, H., Waldi, R., Wallace, R., Wandernoth, S., Wang, J., Ward, D.R., Watson, N.K., Webber, A.D., Websdale, D., Whitehead, M., Wicht, J., Wiedner, D., Wiggers, L., Wilkinson, G., Williams, M.P., Williams, M., Wilson, F.F., Wishahi, J., Witek, M., Witzeling, W., Wotton, S.A., Wright, S., Wu, S., Wyllie, K., Xie, Y., Xing, F., Xing, Z., Yang, Z., Young, R., Yuan, X., Yushchenko, O., Zangoli, M., Zavertyaev, M., Zhang, F., Zhang, L., Zhang, W.C., Zhang, Y., Zhelezov, A., Zhong, L., and Zvyagin, A.
Subjects: Nuclear and High Energy Physics
Published: 2012
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28. Flux Modulations seen by the Muon Veto of the GERDA Experiment

Author: Collaboration, Gerda, Agostini, M., Balata, M., D'Andrea, V., di Vacri, A., Ioannucci, L., Junker, M., Laubenstein, M., Macolino, C., Pandola, L., Borowicz, D., Frodyma, N., Misiaszek, M., Panas, K., Pelczar, K., Wojcik, M., Zuzel, G., Allardt, M., Barros, N., Domula, A., Lehnert, B., Schneider, B., Wester, T., Wilsenach, H., Zuber, K., Brudanin, V., Egorov, V., Gusev, K., Klimenko, A., Kochetov, O., Lubashevskiy, A., Nemchenok, I., Rumyantseva, N., Shevchik, E., Shirchenko, M., Zhitnikov, I., Zinatulina, D., Hult, M., Lutter, G., Bauer, C., Gangapshev, A., Heisel, M., Hofmann, W., Kihm, T., Kirsch, A., Knöpfle, K. T., Lindner, M., Maneschg, W., Salathe, M., Schreiner, J., Schwingenheuer, B., Simgen, H., Smolnikov, A., Stepaniuk, M., Strecker, H., Wagner, V., Wegmann, A., Bellotti, E., Cattadori, C., Pullia, A., Riboldi, S., Barabanov, I., Belogurov, S., Bezrukov, L., Doroshkevich, E., Fedorova, O., Gurentsov, V., Inzhechik, L. V., Kazalov, V., Kornoukhov, V. N., Kuzminov, V. V., Lubsandorzhiev, B., Moseev, P., Selivanenko, O., Veresnikova, A., Yanovich, E., Chernogorov, A., Demidova, E. V., Kirpichnikov, I. V., Vasenko, A. A., Bakalyarov, A. M., Belyaev, S. T., Lebedev, V. I., Zhukov, S. V., Becerici Schmidt, N., Caldwell, A., Liao, H. Y., Majorovits, B., Palioselitis, D., Schulz, O., Vanhoefer, L., Bode, T., Janicsk'o Cs'athy, J., Lazzaro, A., Schönert, S., Wiesinger, C., Bettini, Alessandro, Brugnera, Riccardo, Garfagnini, Alberto, Hemmer, SABINE ELISABETH, MEDINACELI VILLEGAS, Eduardo, Sada, Cinzia, VON STURM ZU VEHLINGEN, KATHARINA CACILIE, Bettini, A., Brugnera, R., Garfagnini, A., Hemmer, S., Lippi, Ivano, Medinaceli, E., Sada, C., Stanco, Luca, von Sturm, K., Falkenstein, R., Freund, K., Grabmayr, P., Hegai, A., Jochum, J., Knapp, M., Ritter, F., Schmitt, C., Schütz, A. K., Baudis, L., Benato, G., and Walter, M.
Subjects: Cryostat, COLLISIONS, Photomultiplier, Particle physics, Physics - Instrumentation and Detectors, Muon, FOS: Physical sciences, interaction, Flux, Cosmic rays, Muon interaction, Underground experiment, Water cherenkov detector, Astronomy and Astrophysics, Cosmic ray, muon interaction, 01 natural sciences, High Energy Physics - Experiment, GERDA - Abteilung Hofmann, Nuclear physics, High Energy Physics - Experiment (hep-ex), Pion, cosmic rays, PION, 0103 physical sciences, Detectors and Experimental Techniques, 010306 general physics, physics.ins-det, Cherenkov radiation, Physics, water cherenkov detector, 010308 nuclear & particles physics, Instrumentation and Detectors (physics.ins-det), Effective temperature, underground experiment, Particle Physics - Experiment
Abstract: The GERDA experiment at LNGS of INFN is equipped with an active muon veto. The main part of the system is a water Cherenkov veto with 66~PMTs in the water tank surrounding the GERDA cryostat. The muon flux recorded by this veto shows a seasonal modulation. Two effects have been identified which are caused by secondary muons from the CNGS neutrino beam (2.2 %) and a temperature modulation of the atmosphere (1.4 %). A mean cosmic muon rate of $I^0_{\mu} = (3.477 \pm 0.002_{\textrm{stat}} \pm 0.067_{\textrm{sys}}) \times 10^{-4}$/(s$\cdot$m$^2$) was found in good agreement with other experiments at LNGS at a depth of 3500~meter water equivalent., Comment: 7 pages, 6 figures
Published: 2016

29. B Physics at the Tevatron: Run II and Beyond

Author: Anikeev, K, Atwood, D, Azfar, F, Bailey, S, Bauer, C, Bell, W, Bodwin, G, Braaten, E, Burdman, G, Butler, J, Byrum, K, Cason, N, Cerri, A, Cheung, H, Dighe, A, Donati, S, Ellis, R, Falk, A, Feild, G, Fleming, S, Furic, I, Gardner, S, Grossman, Y, Gutierrez, G, and Hao, W
Abstract: This report provides a comprehensive overview of the prospects for B physics at the Tevatron. The work was carried out during a series of workshops starting in September 1999. There were four working groups: 1) CP Violation, 2) Rare and Semileptonic Decays, 3) Mixing and Lifetimes, 4) Production, Fragmentation and Spectroscopy. The report also includes introductory chapters on theoretical and experimental tools emphasizing aspects of B physics specific to hadron colliders, as well as overviews of the CDF, D0, and BTeV detectors, and a Summary.
Published: 2016

30. Performance of the beetle readout chip for LHCb

Author: Van Bakel, N, Van Beuzekom, M G, Jans, E, Klous, S, Verkooijen, H, Agari, M, Bauer, C, Baumeister, D, Hofmann, W, Knöpfle, K T, Löchner, S, Schmelling, M, Sexauer, E, Trunk, U, Feuerstack-Raible, M, Harnew, N, and Smale, N J
Subjects: Physics::Instrumentation and Detectors, High Energy Physics::Experiment, Detectors and Experimental Techniques, Quantitative Biology::Genomics
Abstract: This paper presents the design and first measurements on the version 1.2 of the Beetle chip.The Beetle is a 128 channel pipelined readout chip which is intended for the silicon vertex detector, the inner tracker and the pile-up veto trigger of LHCb. In case of multianode photomultiplier tubes being used for the RICH readout, it is foreseen also to use the Beetle.Section II. gives a short overview of the chip architecture whereas section III. shows first measurements on the Beetle 1.2. In section IV. the results from a Total Ionizing Dose (TID) irradiation test is summarized, while an outlook on further tests given in section V.
Published: 2016

31. Measurements of the branching fractions of the decays B0 s → D∓ s K± and B0 s → D− s π +

Author: Aaij, R, Beteta, CA, Adeva, B, Adinolfi, M, Adrover, C, Affolder, A, Ajaltouni, Z, Albrecht, J, Alessio, F, Alexander, M, Ali, S, Alkhazov, G, Cartelle, PA, Jr, AAA, Amato, S, Amhis, Y, Anderson, J, Appleby, RB, Gutierrez, OA, Archilli, F, Artamonov, A, Artuso, M, Aslanides, E, Auriemma, G, Bachmann, S, Back, JJ, Balagura, V, Baldini, W, Barlow, RJ, Barschel, C, Barsuk, S, Barter, W, Bates, A, Bauer, C, Bauer, T, Bay, A, Bediaga, I, Belogurov, S, Belous, K, Belyaev, I, Ben-Haim, E, Benayoun, M, Bencivenni, G, Benson, S, Benton, J, Bernet, R, Bettler, M-O, van Beuzekom, M, Bien, A, Bifani, S, Bird, T, Bizzeti, A, Bjornstad, PM, Blake, T, Blanc, F, Blanks, C, Blouw, J, Blusk, S, Bobrov, A, Bocci, V, Bondar, A, Bondar, N, Bonivento, W, Borghi, S, Borgia, A, Bowcock, TJV, Bozzi, C, Brambach, T, van den Brand, J, Bressieux, J, Brett, D, Britsch, M, Britton, T, Brook, NH, Brown, H, Buechler-Germann, A, Burducea, I, Bursche, A, Buytaert, J, Cadeddu, S, Callot, O, Calvi, M, Gomez, MC, Camboni, A, Campana, P, Carbone, A, Carboni, G, Cardinale, R, Cardini, A, Carson, L, Akiba, KC, Casse, G, Cattaneo, M, Cauet, C, Charles, M, Charpentier, P, Chiapolini, N, Ciba, K, Vidal, XC, Ciezarek, G, Clarke, PEL, Clemencic, M, Cliff, HV, Closier, J, Coca, C, Coco, V, Cogan, J, Collins, P, Comerma-Montells, A, Contu, A, Cook, A, Coombes, M, Corti, G, Couturier, B, Cowan, GA, Currie, R, D'Ambrosio, C, David, P, David, PNY, De Bonis, I, De Bruyn, K, De Capua, S, De Cian, M, De Miranda, JM, De Paula, L, De Simone, P, Decamp, D, Deckenhoff, M, Degaudenzi, H, Del Buono, L, Deplano, C, Derkach, D, Deschamps, O, Dettori, F, Dickens, J, Dijkstra, H, Batista, PD, Bonal, FD, Donleavy, S, Dordei, F, Suarez, AD, Dossett, D, Dovbnya, A, Dupertuis, F, Dzhelyadin, R, Dziurda, A, Easo, S, Egede, U, Egorychev, V, Eidelman, S, van Eijk, D, Eisele, F, Eisenhardt, S, Ekelhof, R, Eklund, L, Elsasser, C, Elsby, D, Pereira, DE, Falabella, A, Faerber, C, Fardell, G, Farinelli, C, Farry, S, Fave, V, Albor, VF, Ferro-Luzzi, M, Filippov, S, Fitzpatrick, C, Fontana, M, Fontanelli, F, Forty, R, Francisco, O, Frank, M, Frei, C, Frosini, M, Furcas, S, Torreira, AG, Galli, D, Gandelman, M, Gandini, P, Gao, Y, Garnier, J-C, Garofoli, J, Tico, JG, Garrido, L, Gascon, D, Gaspar, C, Gauld, R, Gauvin, N, Gersabeck, M, Gershon, T, Ghez, P, Gibson, V, Gligorov, VV, Goebel, C, Golubkov, D, Golutvin, A, Gomes, A, Gordon, H, Gandara, MG, Diaz, RG, Cardoso, LAG, Grauges, E, Graziani, G, Grecu, A, Greening, E, Gregson, S, Gui, B, Gushchin, E, Guz, Y, Gys, T, Hadjivasiliou, C, Haefeli, G, Haen, C, Haines, SC, Hampson, T, Hansmann-Menzemer, S, Harji, R, Harnew, N, Harrison, J, Harrison, PF, Hartmann, T, He, J, Heijne, V, Hennessy, K, Henrard, P, Morata, JAH, van Herwijnen, E, Hicks, E, Holubyev, K, Hopchev, P, Hulsbergen, W, Hunt, P, Huse, T, Huston, RS, Hutchcroft, D, Hynds, D, Iakovenko, V, Ilten, P, Imong, J, Jacobsson, R, Jaeger, A, Hussein, MJ, Jans, E, Jansen, F, Jaton, P, Jean-Marie, B, Jing, F, John, M, Johnson, D, Jones, CR, Jost, B, Kaballo, M, Kandybei, S, Karacson, M, Karbach, TM, Keaveney, J, Kenyon, IR, Kerzel, U, Ketel, T, Keune, A, Khanji, B, Kim, YM, Knecht, M, Koopman, RF, Koppenburg, P, Korolev, M, Kozlinskiy, A, Kravchuk, L, Kreplin, K, Kreps, M, Krocker, G, Krokovny, P, Kruse, F, Kruzelecki, K, Kucharczyk, M, Kudryavtsev, V, Kvaratskheliya, T, La Thi, VN, Lacarrere, D, Lafferty, G, Lai, A, Lambert, D, Lambert, RW, Lanciotti, E, Lanfranchi, G, Langenbruch, C, Latham, T, Lazzeroni, C, Le Gac, R, van Leerdam, J, Lees, J-P, Lefevre, R, Leflat, A, Lefrancois, J, Leroy, O, Lesiak, T, Li, L, Gioi, LL, Lieng, M, Liles, M, Lindner, R, Linn, C, Liu, B, Liu, G, von Loeben, J, Lopes, JH, Asamar, EL, Lopez-March, N, Lu, H, Luisier, J, Mac Raighne, A, Machefert, F, Machikhiliyan, IV, Maciuc, F, Maev, O, Magnin, J, Malde, S, Mamunur, RMD, Manca, G, Mancinelli, G, Mangiafave, N, Marconi, U, Maerki, R, Marks, J, Martellotti, G, Martens, A, Martin, L, Sanchez, AM, Martinelli, M, Santos, DM, Massafferri, A, Mathe, Z, Matteuzzi, C, Matveev, M, Maurice, E, Maynard, B, Mazurov, A, McGregor, G, McNulty, R, Meissner, M, Merk, M, Merkel, J, Miglioranzi, S, Milanes, DA, Minard, M-N, Rodriguez, JM, Monteil, S, Moran, D, Morawski, P, Mountain, R, Mous, I, Muheim, F, Mueller, K, Muresan, R, Muryn, B, Muster, B, Mylroie-Smith, J, Naik, P, Nakada, T, Nandakumar, R, Nasteva, I, Needham, M, Neufeld, N, Nguyen, AD, Nguyen-Mau, C, Nicol, M, Niess, V, Nikitin, N, Nikodem, T, Nomerotski, A, Novoselov, A, Oblakowska-Mucha, A, Obraztsov, V, Oggero, S, Ogilvy, S, Okhrimenko, O, Oldeman, R, Orlandea, M, Goicochea, MO, Owen, P, Pal, BK, Palacios, J, Palano, A, Palutan, M, Panman, J, Papanestis, A, Pappagallo, M, Parkes, C, Parkinson, CJ, Passaleva, G, Patel, GD, Patel, M, Paterson, SK, Patrick, GN, Patrignani, C, Pavel-Nicorescu, C, Alvarez, AP, Pellegrino, A, Penso, G, Altarelli, MP, Perazzini, S, Perego, DL, Trigo, EP, Yzquierdo, AP-C, Perret, P, Perrin-Terrin, M, Pessina, G, Petrolini, A, Phan, A, Olloqui, EP, Valls, BP, Pietrzyk, B, Pilar, T, Pinci, D, Plackett, R, Playfer, S, Casasus, MP, Polok, G, Poluektov, A, Polycarpo, E, Popov, D, Popovici, B, Potterat, C, Powell, A, Prisciandaro, J, Pugatch, V, Navarro, AP, Qian, W, Rademacker, JH, Rakotomiaramanana, B, Rangel, MS, Raniuk, I, Raven, G, Redford, S, Reid, MM, dos Reis, AC, Ricciardi, S, Richards, A, Rinnert, K, Romero, DAR, Robbe, P, Rodrigues, E, Rodrigues, F, Perez, PR, Rogers, GJ, Roiser, S, Romanovsky, V, Rosello, M, Rouvinet, J, Ruf, T, Ruiz, H, Sabatino, G, Silva, JJS, Sagidova, N, Sail, P, Saitta, B, Salzmann, C, Sannino, M, Santacesaria, R, Rios, CS, Santinelli, R, Santovetti, E, Sapunov, M, Sarti, A, Satriano, C, Satta, A, Savrie, M, Savrina, D, Schaack, P, Schiller, M, Schindler, H, Schleich, S, Schlupp, M, Schmelling, M, Schmidt, B, Schneider, O, Schopper, A, Schune, M-H, Schwemmer, R, Sciascia, B, Sciubba, A, Seco, M, Semennikov, A, Senderowska, K, Sepp, I, Serra, N, Serrano, J, Seyfert, P, Shapkin, M, Shapoval, I, Shatalov, P, Shcheglov, Y, Shears, T, Shekhtman, L, Shevchenko, O, Shevchenko, V, Shires, A, Coutinho, RS, Skwarnicki, T, Smith, NA, Smith, E, Sobczak, K, Soler, FJP, Solomin, A, Soomro, F, De Paula, BS, Spaan, B, Sparkes, A, Spradlin, P, Stagni, F, Stahl, S, Steinkamp, O, Stoica, S, Stone, S, Storaci, B, Straticiuc, M, Straumann, U, Subbiah, VK, Swientek, S, Szczekowski, M, Szczypka, P, Szumlak, T, T'Jampens, S, Teodorescu, E, Teubert, F, Thomas, C, Thomas, E, van Tilburg, J, Tisserand, V, Tobin, M, Tolk, S, Topp-Joergensen, S, Torr, N, Tournefier, E, Tourneur, S, Tran, MT, Tsaregorodtsev, A, Tuning, N, Garcia, MU, Ukleja, A, Uwer, U, Vagnoni, V, Valenti, G, Gomez, RV, Regueiro, PV, Vecchi, S, Velthuis, JJ, Veltri, M, Viaud, B, Videau, I, Vieira, D, Vilasis-Cardona, X, Visniakov, J, Vollhardt, A, Volyanskyy, D, Voong, D, Vorobyev, A, Vorobyev, V, Voss, H, Waldi, R, Wandernoth, S, Wang, J, Ward, DR, Watson, NK, Webber, AD, Websdale, D, Whitehead, M, Wiedner, D, Wiggers, L, Wilkinson, G, Williams, MP, Williams, M, Wilson, FF, Wishahi, J, Witek, M, Witzeling, W, Wotton, SA, Wyllie, K, Xie, Y, Xing, F, Xing, Z, Yang, Z, Young, R, Yushchenko, O, Zangoli, M, Zavertyaev, M, Zhang, F, Zhang, L, Zhang, WC, Zhang, Y, Zhelezov, A, Zhong, L, Zvyagin, A, and Collaboration, L
Abstract: The decay mode B s 0 → D s ∓ K ± allows for one of the theoretically cleanest measurements of the CKM angle γ through the study of time-dependent CP violation. This paper reports a measurement of its branching fraction relative to the Cabibbo-favoured mode B s 0 → D s - π + based on a data sample corresponding to 0.37 fb -1 of proton-proton collisions at √s = 7TeV collected in 2011 with the LHCb detector. In addition, the ratio of B meson production fractions f s=f d, determined from semileptonic decays, together with the known branching fraction of the control channel B 0 → D -π +, is used to perform an absolute measurement of the branching fractions: B( B s 0 → D s - π +) = (2.95 ± 0.05 ± 0.17 -0.22 +0.18) × 10 -3 ; B( B s 0 → D s ∓ K ±) = (1.90 ± 0.12 ± 0.13 -0.14 +0.12) × 10 -4 ; where the first uncertainty is statistical, the second the experimental systematic uncertainty, and the third the uncertainty due to f s=f d. Copyright CERN.
Published: 2016

32. REVIEW OF PARTICLE PHYSICS Particle Data Group

Author: Beringer, J, Arguin, J, Barnett, R, Copic, K, Dahl, O, Groom, D, Lin, C, Lys, J, Murayama, H, Wohl, C, Yao, W, Zyla, P, Amsler, C, Antonelli, M, Asner, D, Baer, H, Band, H, Basaglia, T, Bauer, C, Beatty, J, Belousov, V, Bergren, E, Bernardi, G, Bertl, W, and Bethke, S
Published: 2016

33. First observation of the decays B0bar -> D+ K− pi+ pi− and B− -> D0 K− pi+ pi−

Author: LHCb Collaboration, Aaij, R., Beteta, C. Abellan, Adeva, B., Adinolfi, M., Adrover, C., Affolder, A., Ajaltouni, Z., Albrecht, J., Alessio, F., Alexander, M., Alkhazov, G., Cartelle, P. Alvarez, Alves, A. A., Amato, S., Amhis, Y., Anderson, J., Appleby, R. B., Gutierrez, O. Aquines, Archilli, F., Arrabito, L., Artamonov, A., Artuso, M., Aslanides, E., Auriemma, G., Bachmann, S., Back, J. J., Bailey, D. S., Balagura, V., Baldini, W., Barlow, R. J., Barschel, C., Barsuk, S., Barter, W., Bates, A., Bauer, C., Bauer, Th., Bay, A., Bediaga, I., Belogurov, S., Belous, K., Belyaev, I., Ben-Haim, E., Benayoun, M., Bencivenni, G., Benson, S., Benton, J., Bernet, R., Bettler, M. -O., van Beuzekom, M., Bien, A., Bifani, S., Bird, T., Bizzeti, A., Bj��rnstad, P. M., Blake, T., Blanc, F., Blanks, C., Blouw, J., Blusk, S., Bobrov, A., Bocci, V., Bondar, A., Bondar, N., Bonivento, W., Borghi, S., Borgia, A., Bowcock, T. J. V., Bozzi, C., Brambach, T., Brand, J. van den, Bressieux, J., Brett, D., Britsch, M., Britton, T., Brook, N. H., Brown, H., B��chler-Germann, A., Burducea, I., Bursche, A., Buytaert, J., Cadeddu, S., Callot, O., Calvi, M., Gomez, M. Calvo, Camboni, A., Campana, P., Carbone, A., Carboni, G., Cardinale, R., Cardini, A., Carson, L., Akiba, K. Carvalho, Casse, G., Cattaneo, M., Cauet, Ch., Charles, M., Charpentier, Ph., Chiapolini, N., Ciba, K., Vidal, X. Cid, Ciezarek, G., Clarke, P. E. L., Clemencic, M., Cliff, H. V., Closier, J., Coca, C., Coco, V., Cogan, J., Collins, P., Comerma-Montells, A., Constantin, F., Contu, A., Cook, A., Coombes, M., Corti, G., Cowan, G. A., Currie, R., D'Ambrosio, C., David, P., David, P. N. Y., De Bonis, I., De Capua, S., De Cian, M., De Lorenzi, F., De Miranda, J. M., De Paula, L., De Simone, P., Decamp, D., Deckenhoff, M., Degaudenzi, H., Del Buono, L., Deplano, C., Derkach, D., Deschamps, O., Dettori, F., Dickens, J., Dijkstra, H., Batista, P. Diniz, Bonal, F. Domingo, Donleavy, S., Dordei, F., Su��rez, A. Dosil, Dossett, D., Dovbnya, A., Dupertuis, F., Dzhelyadin, R., Dziurda, A., Easo, S., Egede, U., Egorychev, V., Eidelman, S., van Eijk, D., Eisele, F., Eisenhardt, S., Ekelhof, R., Eklund, L., Elsasser, Ch., Elsby, D., Pereira, D. Esperante, Est��ve, L., Falabella, A., Fanchini, E., F��rber, C., Fardell, G., Farinelli, C., Farry, S., Fave, V., Albor, V. Fernandez, Ferro-Luzzi, M., Filippov, S., Fitzpatrick, C., Fontana, M., Fontanelli, F., Forty, R., Frank, M., Frei, C., Frosini, M., Furcas, S., Torreira, A. Gallas, Galli, D., Gandelman, M., Gandini, P., Gao, Y., Garnier, J-C., Garofoli, J., Tico, J. Garra, Garrido, L., Gascon, D., Gaspar, C., Gauvin, N., Gersabeck, M., Gershon, T., Ghez, Ph., Gibson, V., Gligorov, V. V., G��bel, C., Golubkov, D., Golutvin, A., Gomes, A., Gordon, H., G��ndara, M. Grabalosa, Diaz, R. Graciani, Cardoso, L. A. Granado, Graug��s, E., Graziani, G., Grecu, A., Greening, E., Gregson, S., Gui, B., Gushchin, E., Guz, Yu., Gys, T., Haefeli, G., Haen, C., Haines, S. C., Hampson, T., Hansmann-Menzemer, S., Harji, R., Harnew, N., Harrison, J., Harrison, P. F., Hartmann, T., He, J., Heijne, V., Hennessy, K., Henrard, P., Morata, J. A. Hernando, van Herwijnen, E., Hicks, E., Holubyev, K., Hopchev, P., Hulsbergen, W., Hunt, P., Huse, T., Huston, R. S., Hutchcroft, D., Hynds, D., Iakovenko, V., Ilten, P., Imong, J., Jacobsson, R., Jaeger, A., Hussein, M. Jahjah, Jans, E., Jansen, F., Jaton, P., Jean-Marie, B., Jing, F., John, M., Johnson, D., Jones, C. R., Jost, B., Kaballo, M., Kandybei, S., Karacson, M., Karbach, T. M., Keaveney, J., Kenyon, I. R., Kerzel, U., Ketel, T., Keune, A., Khanji, B., Kim, Y. M., Knecht, M., Koopman, R., Koppenburg, P., Kozlinskiy, A., Kravchuk, L., Kreplin, K., Kreps, M., Krocker, G., Krokovny, P., Kruse, F., Kruzelecki, K., Kucharczyk, M., Kvaratskheliya, T., La Thi, V. N., Lacarrere, D., Lafferty, G., Lai, A., Lambert, D., Lambert, R. W., Lanciotti, E., Lanfranchi, G., Langenbruch, C., Latham, T., Lazzeroni, C., Gac, R. Le, van Leerdam, J., Lees, J. -P., Lef��vre, R., Leflat, A., Lefran��ois, J., Leroy, O., Lesiak, T., Li, L., Gioi, L. Li, Lieng, M., Liles, M., Lindner, R., Linn, C., Liu, B., Liu, G., von Loeben, J., Lopes, J. H., Asamar, E. Lopez, Lopez-March, N., Lu, H., Luisier, J., Mac Raighne, A., Machefert, F., Machikhiliyan, I. V., Maciuc, F., Maev, O., Magnin, J., Malde, S., Mamunur, R. M. D., Manca, G., Mancinelli, G., Mangiafave, N., Marconi, U., M��rki, R., Marks, J., Martellotti, G., Martens, A., Martin, L., S��nchez, A. Mart��n, Santos, D. Martinez, Massafferri, A., Mathe, Z., Matteuzzi, C., Matveev, M., Maurice, E., Maynard, B., Mazurov, A., McGregor, G., McNulty, R., Meissner, M., Merk, M., Merkel, J., Messi, R., Miglioranzi, S., Milanes, D. A., Minard, M. -N., Rodriguez, J. Molina, Monteil, S., Moran, D., Morawski, P., Mountain, R., Mous, I., Muheim, F., M��ller, K., Muresan, R., Muryn, B., Muster, B., Musy, M., Mylroie-Smith, J., Naik, P., Nakada, T., Nandakumar, R., Nasteva, I., Nedos, M., Needham, M., Neufeld, N., Nguyen-Mau, C., Nicol, M., Niess, V., Nikitin, N., Nomerotski, A., Novoselov, A., Oblakowska-Mucha, A., Obraztsov, V., Oggero, S., Ogilvy, S., Okhrimenko, O., Oldeman, R., Orlandea, M., Goicochea, J. M. Otalora, Owen, P., Pal, K., Palacios, J., Palano, A., Palutan, M., Panman, J., Papanestis, A., Pappagallo, M., Parkes, C., Parkinson, C. J., Passaleva, G., Patel, G. D., Patel, M., Paterson, S. K., Patrick, G. N., Patrignani, C., Pavel-Nicorescu, C., Alvarez, A. Pazos, Pellegrino, A., Penso, G., Altarelli, M. Pepe, Perazzini, S., Perego, D. L., Trigo, E. Perez, Yzquierdo, A. P��rez-Calero, Perret, P., Perrin-Terrin, M., Pessina, G., Petrella, A., Petrolini, A., Phan, A., Olloqui, E. Picatoste, Valls, B. Pie, Pietrzyk, B., Pila��, T., Pinci, D., Plackett, R., Playfer, S., Casasus, M. Plo, Polok, G., Poluektov, A., Polycarpo, E., Popov, D., Popovici, B., Potterat, C., Powell, A., Prisciandaro, J., Pugatch, V., Navarro, A. Puig, Qian, W., Rademacker, J. H., Rakotomiaramanana, B., Rangel, M. S., Raniuk, I., Raven, G., Redford, S., Reid, M. M., Reis, A. C. dos, Ricciardi, S., Rinnert, K., Romero, D. A. Roa, Robbe, P., Rodrigues, E., Rodrigues, F., Perez, P. Rodriguez, Rogers, G. J., Roiser, S., Romanovsky, V., Rosello, M., Rouvinet, J., Ruf, T., Ruiz, H., Sabatino, G., Silva, J. J. Saborido, Sagidova, N., Sail, P., Saitta, B., Salzmann, C., Sannino, M., Santacesaria, R., Rios, C. Santamarina, Santinelli, R., Santovetti, E., Sapunov, M., Sarti, A., Satriano, C., Satta, A., Savrie, M., Savrina, D., Schaack, P., Schiller, M., Schleich, S., Schlupp, M., Schmelling, M., Schmidt, B., Schneider, O., Schopper, A., Schune, M. -H., Schwemmer, R., Sciascia, B., Sciubba, A., Seco, M., Semennikov, A., Senderowska, K., Sepp, I., Serra, N., Serrano, J., Seyfert, P., Shapkin, M., Shapoval, I., Shatalov, P., Shcheglov, Y., Shears, T., Shekhtman, L., Shevchenko, O., Shevchenko, V., Shires, A., Coutinho, R. Silva, Skwarnicki, T., Smith, A. C., Smith, N. A., Smith, E., Sobczak, K., Soler, F. J. P., Solomin, A., Soomro, F., De Paula, B. Souza, Spaan, B., Sparkes, A., Spradlin, P., Stagni, F., Stahl, S., Steinkamp, O., Stoica, S., Stone, S., Storaci, B., Straticiuc, M., Straumann, U., Subbiah, V. K., Swientek, S., Szczekowski, M., Szczypka, P., Szumlak, T., T'Jampens, S., Teodorescu, E., Teubert, F., Thomas, C., Thomas, E., van Tilburg, J., Tisserand, V., Tobin, M., Topp-Joergensen, S., Torr, N., Tournefier, E., Tran, M. T., Tsaregorodtsev, A., Tuning, N., Garcia, M. Ubeda, Ukleja, A., Urquijo, P., Uwer, U., Vagnoni, V., Valenti, G., Gomez, R. Vazquez, Regueiro, P. Vazquez, Vecchi, S., Velthuis, J. J., Veltri, M., Viaud, B., Videau, I., Vilasis-Cardona, X., Visniakov, J., Vollhardt, A., Volyanskyy, D., Voong, D., Vorobyev, A., Voss, H., Wandernoth, S., Wang, J., Ward, D. R., Watson, N. K., Webber, A. D., Websdale, D., Whitehead, M., Wiedner, D., Wiggers, L., Wilkinson, G., Williams, M. P., Williams, M., Wilson, F. F., Wishahi, J., Witek, M., Witzeling, W., Wotton, S. A., Wyllie, K., Xie, Y., Xing, F., Xing, Z., Yang, Z., Young, R., Yushchenko, O., Zavertyaev, M., Zhang, F., Zhang, L., Zhang, W. C., Zhang, Y., Zhelezov, A., Zhong, L., Zverev, E., and Zvyagin, A.
Subjects: High Energy Physics - Experiment (hep-ex), FOS: Physical sciences
Abstract: First observations of the Cabibbo suppressed decays B0bar -->D+ K- pi+ pi- and B- --> D0 K- pi+ pi- are reported using 35 pb^{-1} of data collected with the LHCb detector. Their branching fractions are measured with respect to the corresponding Cabibbo favored decays, from which we obtain B(B0bar --> D+ K- pi+ pi-)/B(B0bar --> D+ pi- pi+ pi-)=(5.9\pm1.1\pm0.5) x 10^{-2} and B(B- --> D0 K- pi+ pi-)/B(B- --> D0 pi- pi+ pi-)=(9.4\pm1.3\pm0.9) x 10^{-2}, where the uncertainties are statistical and systematic, respectively. The B- --> D0 K- pi+ pi- decay is particularly interesting, as it can be used in a similar way to B- --> D0 K- to measure the CKM phase gamma., 9 pages, 2 figures
Published: 2016

34. Search of Neutrinoless Double Beta Decay with the GERDA Experiment

Author: Agostini, M, Allardt, M, Bakalyarov, AM, Balata, M, Barabanov, I, Baudis, L, Bauer, C, Becerici-Schmidt, N, Bellotti, E, Belogurov, S, Belyaev, ST, Benato, G, Bettini, A, Bezrukov, L, Bode, T, Borowicz, D, Brudanin, V, Brugnera, R, Budjáš, D, Caldwell, A, Cattadori, C, Chernogorov, A, D'Andrea, V, Demidova, EV, Domula, A, Doroshkevich, E, Egorov, V, Falkenstein, R, Fedorova, O, Freund, K, Frodyma, N, Gangapshev, A, Garfagnini, A, Gooch, C, Gotti, C, Grabmayr, P, Gurentsov, V, Gusev, K, Hampel, W, Hegai, A, Heisel, M, Hemmer, S, Heusser, G, Hoffmann, W, Hult, M, Inzhechik, LV, Ioannucci, L, Csáthy, J Janicksó, Jochum, J, Junker, M, Kazalov, V, Kihm, T, Kirpichnikov, IV, Kirsch, A, Klimenko, A, Knöpfle, KT, Kochetov, O, Kornoukhov, VN, Kuzminov, VV, Laubenstein, M, Lazzaro, A, Lebedev, VI, Lehnert, B, Liao, HY, Lindner, M, Lippi, I, Lubashevskiy, A, Lubsandorzhiev, B, Lutter, G, Macolino, C, Majorovits, B, Maneschg, W, Marissens, G, Medinaceli, E, Misiaszek, M, Moseev, P, Nemchenok, I, Nisi, S, Palioselitis, D, Panas, K, Pandola, L, Pelczar, K, Pessina, G, Pullia, A, Reissfelder, M, Riboldi, S, Rumyantseva, N, Sada, C, Salathe, M, Schmitt, C, Schneider, B, Schreiner, J, Schulz, O, Schwingenheuer, B, Schönert, S, Seitz, H, Selivalenko, O, Shevchik, E, Shirchenko, M, and Simgen, H
Subjects: Ge-76, T-1/2(0 nu), enriched Ge detectors, neutrinoless double beta decay
Abstract: The GERDA (GERmanium Detector Array) is an experiment for the search of neutrinoless double beta decay (0νββ) in 76Ge, located at Laboratori Nazionali del Gran Sasso of INFN (Italy). In the first phase of the experiment, a 90% confidence level (C.L.) sensitivity of 2.4·1025 yr on the 0νββ decay half-life was achieved with a 21.6 kg·yr exposure and an unprecedented background index in the region of interest of 10-2 counts/(keV·kg·yr). No excess of signal events was found, and an experimental lower limit on the half-life of 2.1 · 1025 yr (90% C.L.) was established. Correspondingly, the limit on the effective Majorana neutrino mass is mee
Published: 2016

35. Spectroscopic Quadrupole Moments in Sr 96,98: Evidence for Shape Coexistence in Neutron-Rich Strontium Isotopes at N=60

Author: Clément, E., Zielińska, M., Görgen, A., Korten, W., Péru, S., Libert, J., Goutte, H., Hilaire, S., Bastin, B., Bauer, C., Blazhev, A., Bree, N., Bruyneel, B., Butler, P. A., Butterworth, J., Delahaye, P., Dijon, A., Doherty, D. T., Ekström, A., Fitzpatrick, C., Fransen, C., Georgiev, G., Gernhäuser, R., Hess, H., Iwanicki, J., Jenkins, D. G., Larsen, A. C., Ljungvall, J., Lutter, R., Marley, P., Moschner, K., Napiorkowski, P. J., Pakarinen, J., Petts, A., Reiter, P., Renstrøm, T., Seidlitz, M., Siebeck, B., Siem, S., Sotty, C., Srebrny, J., Stefanescu, I., Tveten, G. M., Van De Walle, J., Vermeulen, M., Voulot, D., Warr, N., Wenander, F., Wiens, A., De Witte, H., and Wrzosek-Lipska, K.
Subjects: Nuclear Theory, Physics::Accelerator Physics
Abstract: Neutron-rich 96;98Sr isotopes have been investigated by safe Coulomb excitation of radioactive beams at the REX-ISOLDE facility. Reduced transition probabilities and spectroscopic quadrupole moments have been extracted from the differential Coulomb excitation cross sections. These results allow, for the first time, the drawing of definite conclusions about the shape coexistence of highly deformed prolate and spherical configurations. In particular, a very small mixing between the coexisting states is observed, contrary to other mass regions where strong mixing is present. Experimental results have been compared to beyond-mean-field calculations using the Gogny D1S interaction in a five-dimensional collective Hamiltonian formalism, which reproduce the shape change at N ¼ 60.
Published: 2016

36. Measurement of the cross-section ratio σ(χc2)/σ(χc1) for prompt χc production at s=7 TeV

Author: Aaij, R., Abellan Beteta, C., Adeva, B., Adinolfi, M., Adrover, C., Affolder, A., Ajaltouni, Z., Albrecht, J., Alessio, F., Alexander, M., Alkhazov, G., Alvarez Cartelle, P., Alves Jr., A.A., Amato, S., Amhis, Y., Anderson, J., Appleby, R.B., Aquines Gutierrez, O., Archilli, F., Arrabito, L., Artamonov, A., Artuso, M., Aslanides, E., Auriemma, G., Bachmann, S., Back, J.J., Bailey, D.S., Balagura, V., Baldini, W., Barlow, R.J., Barschel, C., Barsuk, S., Barter, W., Bates, A., Bauer, C., Bauer, Th., Bay, A., Bediaga, I., Belogurov, S., Belous, K., Belyaev, I., Ben-Haim, E., Benayoun, M., Bencivenni, G., Benson, S., Benton, J., Bernet, R., Bettler, M.-O., van Beuzekom, M., Bien, A., Bifani, S., Bird, T., Bizzeti, A., Bjørnstad, P.M., Blake, T., Blanc, F., Blanks, C., Blouw, J., Blusk, S., Bobrov, A., Bocci, V., Bondar, A., Bondar, N., Bonivento, W., Borghi, S., Borgia, A., Bowcock, T.J.V., Bozzi, C., Brambach, T., van den Brand, J., Bressieux, J., Brett, D., Britsch, M., Britton, T., Brook, N.H., Brown, H., Büchler-Germann, A., Burducea, I., Bursche, A., Buytaert, J., Cadeddu, S., Callot, O., Calvi, M., Calvo Gomez, M., Camboni, A., Campana, P., Carbone, A., Carboni, G., Cardinale, R., Cardini, A., Carson, L., Carvalho Akiba, K., Casse, G., Cattaneo, M., Cauet, Ch., Charles, M., Charpentier, Ph., Chiapolini, N., Ciba, K., Cid Vidal, X., Ciezarek, G., Clarke, P.E.L., Clemencic, M., Cliff, H.V., Closier, J., Coca, C., Coco, V., Cogan, J., Collins, P., Comerma-Montells, A., Constantin, F., Conti, G., Contu, A., Cook, A., Coombes, M., Corti, G., Cowan, G.A., Currie, R., DʼAlmagne, B., DʼAmbrosio, C., David, P., David, P.N.Y., De Bonis, I., De Capua, S., De Cian, M., De Lorenzi, F., De Miranda, J.M., De Paula, L., De Simone, P., Decamp, D., Deckenhoff, M., Degaudenzi, H., Deissenroth, M., Del Buono, L., Deplano, C., Derkach, D., Deschamps, O., Dettori, F., Dickens, J., Dijkstra, H., Diniz Batista, P., Domingo Bonal, F., Donleavy, S., Dordei, F., Dosil Suárez, A., Dossett, D., Dovbnya, A., Dupertuis, F., Dzhelyadin, R., Dziurda, A., Easo, S., Egede, U., Egorychev, V., Eidelman, S., van Eijk, D., Eisele, F., Eisenhardt, S., Ekelhof, R., Eklund, L., Elsasser, Ch., Elsby, D., Esperante Pereira, D., Estève, L., Falabella, A., Fanchini, E., Färber, C., Fardell, G., Farinelli, C., Farry, S., Fave, V., Fernandez Albor, V., Ferro-Luzzi, M., Filippov, S., Fitzpatrick, C., Fontana, M., Fontanelli, F., Forty, R., Frank, M., Frei, C., Frosini, M., Furcas, S., Gallas Torreira, A., Galli, D., Gandelman, M., Gandini, P., Gao, Y., Garnier, J.-C., Garofoli, J., Garra Tico, J., Garrido, L., Gascon, D., Gaspar, C., Gauvin, N., Gersabeck, M., Gershon, T., Ghez, Ph., Gibson, V., Gligorov, V.V., Göbel, C., Golubkov, D., Golutvin, A., Gomes, A., Gordon, H., Grabalosa Gándara, M., Graciani Diaz, R., Granado Cardoso, L.A., Graugés, E., Graziani, G., Grecu, A., Greening, E., Gregson, S., Gui, B., Gushchin, E., Guz, Yu., Gys, T., Haefeli, G., Haen, C., Haines, S.C., Hampson, T., Hansmann-Menzemer, S., Harji, R., Harnew, N., Harrison, J., Harrison, P.F., He, J., Heijne, V., Hennessy, K., Henrard, P., Hernando Morata, J.A., van Herwijnen, E., Hicks, E., Holubyev, K., Hopchev, P., Hulsbergen, W., Hunt, P., Huse, T., Huston, R.S., Hutchcroft, D., Hynds, D., Iakovenko, V., Ilten, P., Imong, J., Jacobsson, R., Jaeger, A., Jahjah Hussein, M., Jans, E., Jansen, F., Jaton, P., Jean-Marie, B., Jing, F., John, M., Johnson, D., Jones, C.R., Jost, B., Kaballo, M., Kandybei, S., Karacson, M., Karbach, T.M., Keaveney, J., Kenyon, I.R., Kerzel, U., Ketel, T., Keune, A., Khanji, B., Kim, Y.M., Knecht, M., Koppenburg, P., Kozlinskiy, A., Kravchuk, L., Kreplin, K., Kreps, M., Krocker, G., Krokovny, P., Kruse, F., Kruzelecki, K., Kucharczyk, M., Kvaratskheliya, T., La Thi, V.N., Lacarrere, D., Lafferty, G., Lai, A., Lambert, D., Lambert, R.W., Lanciotti, E., Lanfranchi, G., Langenbruch, C., Latham, T., Lazzeroni, C., Le Gac, R., van Leerdam, J., Lees, J.-P., Lefèvre, R., Leflat, A., Lefrançois, J., Leroy, O., Lesiak, T., Li, L., Li Gioi, L., Lieng, M., Liles, M., Lindner, R., Linn, C., Liu, B., Liu, G., Lopes, J.H., Lopez Asamar, E., Lopez-March, N., Lu, H., Luisier, J., Mac Raighne, A., Machefert, F., Machikhiliyan, I.V., Maciuc, F., Maev, O., Magnin, J., Malde, S., Mamunur, R.M.D., Manca, G., Mancinelli, G., Mangiafave, N., Marconi, U., Märki, R., Marks, J., Martellotti, G., Martens, A., Martin, L., Martín Sánchez, A., Martinez Santos, D., Massafferri, A., Mathe, Z., Matteuzzi, C., Matveev, M., Maurice, E., Maynard, B., Mazurov, A., McGregor, G., McNulty, R., Mclean, C., Meissner, M., Merk, M., Merkel, J., Messi, R., Miglioranzi, S., Milanes, D.A., Minard, M.-N., Molina Rodriguez, J., Monteil, S., Moran, D., Morawski, P., Mountain, R., Mous, I., Muheim, F., Müller, K., Muresan, R., Muryn, B., Muster, B., Musy, M., Mylroie-Smith, J., Naik, P., Nakada, T., Nandakumar, R., Nasteva, I., Nedos, M., Needham, M., Neufeld, N., Nguyen-Mau, C., Nicol, M., Niess, V., Nikitin, N., Nomerotski, A., Novoselov, A., Oblakowska-Mucha, A., Obraztsov, V., Oggero, S., Ogilvy, S., Okhrimenko, O., Oldeman, R., Orlandea, M., Otalora Goicochea, J.M., Owen, P., Pal, K., Palacios, J., Palano, A., Palutan, M., Panman, J., Papanestis, A., Pappagallo, M., Parkes, C., Parkinson, C.J., Passaleva, G., Patel, G.D., Patel, M., Paterson, S.K., Patrick, G.N., Patrignani, C., Pavel-Nicorescu, C., Pazos Alvarez, A., Pellegrino, A., Penso, G., Pepe Altarelli, M., Perazzini, S., Perego, D.L., Perez Trigo, E., Pérez-Calero Yzquierdo, A., Perret, P., Perrin-Terrin, M., Pessina, G., Petrella, A., Petrolini, A., Phan, A., Picatoste Olloqui, E., Pie Valls, B., Pietrzyk, B., Pilař, T., Pinci, D., Plackett, R., Playfer, S., Plo Casasus, M., Polok, G., Poluektov, A., Polycarpo, E., Popov, D., Popovici, B., Potterat, C., Powell, A., du Pree, T., Prisciandaro, J., Pugatch, V., Puig Navarro, A., Qian, W., Rademacker, J.H., Rakotomiaramanana, B., Rangel, M.S., Raniuk, I., Raven, G., Redford, S., Reid, M.M., dos Reis, A.C., Ricciardi, S., Rinnert, K., Roa Romero, D.A., Robbe, P., Rodrigues, E., Rodrigues, F., Rodriguez Perez, P., Rogers, G.J., Roiser, S., Romanovsky, V., Rosello, M., Rouvinet, J., Ruf, T., Ruiz, H., Sabatino, G., Saborido Silva, J.J., Sagidova, N., Sail, P., Saitta, B., Salzmann, C., Sannino, M., Santacesaria, R., Santamarina Rios, C., Santinelli, R., Santovetti, E., Sapunov, M., Sarti, A., Satriano, C., Satta, A., Savrie, M., Savrina, D., Schaack, P., Schiller, M., Schleich, S., Schlupp, M., Schmelling, M., Schmidt, B., Schneider, O., Schopper, A., Schune, M.-H., Schwemmer, R., Sciascia, B., Sciubba, A., Seco, M., Semennikov, A., Senderowska, K., Sepp, I., Serra, N., Serrano, J., Seyfert, P., Shao, B., Shapkin, M., Shapoval, I., Shatalov, P., Shcheglov, Y., Shears, T., Shekhtman, L., Shevchenko, O., Shevchenko, V., Shires, A., Silva Coutinho, R., Skwarnicki, T., Smith, A.C., Smith, N.A., Smith, E., Sobczak, K., Soler, F.J.P., Solomin, A., Soomro, F., Souza De Paula, B., Spaan, B., Sparkes, A., Spradlin, P., Stagni, F., Stahl, S., Steinkamp, O., Stoica, S., Stone, S., Storaci, B., Straticiuc, M., Straumann, U., Subbiah, V.K., Swientek, S., Szczekowski, M., Szczypka, P., Szumlak, T., TʼJampens, S., Teodorescu, E., Teubert, F., Thomas, C., Thomas, E., van Tilburg, J., Tisserand, V., Tobin, M., Topp-Joergensen, S., Torr, N., Tournefier, E., Tran, M.T., Tsaregorodtsev, A., Tuning, N., Ubeda Garcia, M., Ukleja, A., Urquijo, P., Uwer, U., Vagnoni, V., Valenti, G., Vazquez Gomez, R., Vazquez Regueiro, P., Vecchi, S., Velthuis, J.J., Veltri, M., Viaud, B., Videau, I., Vilasis-Cardona, X., Visniakov, J., Vollhardt, A., Volyanskyy, D., Voong, D., Vorobyev, A., Voss, H., Wandernoth, S., Wang, J., Ward, D.R., Watson, N.K., Webber, A.D., Websdale, D., Whitehead, M., Wiedner, D., Wiggers, L., Wilkinson, G., Williams, M.P., Williams, M., Wilson, F.F., Wishahi, J., Witek, M., Witzeling, W., Wotton, S.A., Wyllie, K., Xie, Y., Xing, F., Xing, Z., Yang, Z., Young, R., Yushchenko, O., Zavertyaev, M., Zhang, F., Zhang, L., Zhang, W.C., Zhang, Y., Zhelezov, A., Zhong, L., Zverev, E., and Zvyagin, A.
Subjects: Nuclear and High Energy Physics
Published: 2012
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37. Population of the 2(ms)(+) mixed-symmetry state of Ba-140 with the alpha-transfer reaction

Author: Stahl, C., Leske, J., Bauer, C., Gadea, Andrés, Jungclaus, Andrea, Theisen, Ch., Ur, C. A., Valiente-Dobón, J. J., Federal Ministry of Education and Research (Germany), Generalitat Valenciana, European Commission, Laboratori Nazionali di Legnaro, Helmholtz International Center for FAIR, and Ministerio de Economía y Competitividad (España)
Abstract: C. Stahl et al.; 7 pags.; 6 figs.; 1 tab.; PACS number(s): 21.10.Re, 21.60.Fw, 25.40.Hs, Background: Identification of proton-neutron mixed-symmetric one-quadrupole phonon excitations (the 2(ms)(+) states) of atomic nuclei provides information on the isovector part of the residual nucleon-nucleon interaction. It was predicted that the 2(ms)(+) state of particular nuclei close to the U(5) limit of the interacting boson model, in particular Ba-140, should be considerably populated by alpha-transfer reactions [C. E. Alonso et al., Phys. Rev. C 78, 017301 (2008)]. Purpose: We aim at the identification of the 2(ms)(+) mixed-symmetry state (MSS) of radioactive Ba-140 and investigate its population by the alpha-transfer reaction as a suitable tool to selectively populate MSSs and as a potential new signature for its mixed-symmetric character. Method: A gamma-ray spectroscopy experiment was performed in inverse kinematics in order to populate the 2(ms)(+) state of Ba-140 by alpha-transfer from a C-nat target on Xe-136 beam ions. The population of the candidate for the 2(ms)(+) state of Ba-140 was measured relative to the population of the 2(1)(+) state. Results: The candidate for the 2(ms)(+) state of Ba-140 was populated by a transfer three times weaker than predicted. Another 2(+) state that can be ruled out as the MSS was in turn as strongly populated by the a transfer as predicted for the MSS. Conclusions: The relative population of 2(+) states by alpha-transfer cannot serve as a new signature for MSSs, since other 2(+) states are also strongly populated. Nevertheless, the substantial population of the MSS candidate of Ba-140 by alpha transfer qualifies this type of reaction as suitable tool to excite MSSs and study their electromagnetic decay properties. ©2015 American Physical Society, We thank the accelerator crew of the Laboratori Nazionali di Legnaro for providing the xenon beam, and K.-H. Speidel, A. Vitturi, O. Moller, G. Rainovski, and V. Werner for fruitful ¨ discussions. This work was supported by HIC for FAIR and the German BMBF under Grants No. 05P09RDFN4 and No. 05P12RDFN8. A. Gadea has been supported by MINECO, Spain, under the grant FPA2014-57196-C5, Generalitat Valenciana, Spain, under the grant PROMETEOII/2014/019, and by the EU under the FEDER program.
Published: 2015

38. Production, commissioning and first data of the LHCb Silicon Tracker

Author: Voss, H, Bay, A, Blanc, F, Bettler, M O, Conti, G, Fauland, P, Fave, V, Frei, R, Gueissaz, N, Keune, A, Luisier, J, Muresan, R, Nakada, T, Needham, M, Nicolas, L, Knecht, M, Perrin, A, Potterat, C, Schneider, O, Tran, M, Bauer, C, Britsch, M, Hofmann, W, Maciuc, F, Schmelling, M, Smale, N, Schwingenheuer, B, Straumann, U, Anderson, J, Bernet, R, Buechler, A, Chiapolini, N, Hangartner, V, Salzmann, C, Steiner, S, Steinkamp, O, Van Tilburg, J, Vollhardt, B, Adeva, B, Esperante-Pereira, D, Fungueirino Pazos, J, Gallas, A, Lois, C, Pazos-Alvarez, A, Pérez-Trigo, E, Casasus, M, Rodriguez Perez, P, Saborido, J, Vázquez, P, Borysova, M, Iakovenko, V, Ohrimenko, O, Pugatch, V, and Pylypchenko, Y
Subjects: Physics, Nuclear and High Energy Physics, Quality (physics), Silicon, chemistry, Physics in General, Project commissioning, Detector, chemistry.chemical_element, Production (economics), Instrumentation, Automotive engineering, Beam (structure)
Abstract: We give here a short review of the LHCb Silicon Tracker, the main points of the module production and quality control, followed by the commissioning of the detector. Problems that were found during production or commissioning are described and the first performance assessment of the installed detector with “beam data” is given.
Published: 2010

39. Design and production of detector modules for the LHCb Silicon Tracker

Author: Agari, M, Bauer, C, Blouw, J, Hofmann, W, Löchner, S, Maciuc, F, Schmelling, M, Smale, N, Schwingenheuer, B, Voss, H, Pugatch, V, Bay, A, Bettler, MO, Fauland, P, Frei, R, Van Hunen, J, Knecht, M, Nicolas, L, Perrin, A, Schneider, O, Tran, MT, Vervink, K, Adeva, B, Esperante-Pereira, D, Fungueirino-Pazos, J L, Lois, C, Pazos-Alvarez, A, Pérez-Trigo, E, Pló-Casasus, M, Vázquez, P, Bernhard, RP, Bernet, R, Gassner, J, Lehner, F, Needham, M, Sakhelashvili, T M, Steiner, S, Steinkamp, O, Straumann, U, Van Tilburg, J, Vollhardt, A, Volyanskyy, D, and Wenger, A
Subjects: Physics, Nuclear and High Energy Physics, Silicon, business.industry, Detector, chemistry.chemical_element, Tracking (particle physics), Planar, chemistry, Silicon detector, Production (economics), Detectors and Experimental Techniques, business, Instrumentation, Quality assurance, Computer hardware
Abstract: The LHCb Silicon Tracker will cover a sensitive surface of about 12 m^2 with silicon micro-strip detectors. The production of detector modules is currently coming close to its conclusion. In this paper, the design of the detector modules, the main module production steps, and the module quality assurance programme are described. Selected results from the quality assurance are shown and first lessons are drawn from the experience gained during module production. Presented at the 6th International ``Hiroshima'' Symposium on the Development and Application of Semiconductor Tracking Detectors, Carmel, California, September 11-15, 2006; proceedings submitted for publication in Nucl. Instr. and Meth.~A
Published: 2007

40. Results on neutrinoless double-β decay of 76Ge from phase I of the GERDA experiment

Author: Agostini, M, Allardt, M, Andreotti, E, Bakalyarov, A, Balata, M, Barabanov, I, Barnabé Heider, M, Barros, N, Baudis, L, Bauer, C, Becerici Schmidt, N, Bellotti, E, Belogurov, S, Belyaev, S, Benato, G, Bettini, A, Bezrukov, L, Bode, T, Brudanin, V, Brugnera, R, Budjáš, D, Caldwell, A, Cattadori, C, Chernogorov, A, Cossavella, F, Demidova, E, Domula, A, Egorov, V, Falkenstein, R, Ferella, A, Freund, K, Frodyma, N, Gangapshev, A, Garfagnini, A, Grabmayr, P, Gurentsov, V, Gusev, K, Guthikonda, K, Hampel, W, Hegai, A, Heisel, M, Hemmer, S, Heusser, G, Hofmann, W, Hult, M, Inzhechik, L, Ioannucci, L, Janicskó Csáthy, J, Jochum, J, Junker, M, Kihm, T, Kirpichnikov, I, Kirsch, A, Klimenko, A, Knöpfle, K, Kochetov, O, Kornoukhov, V, Kuzminov, V, Laubenstein, M, Lazzaro, A, Lebedev, V, Lehnert, B, Liao, H, Lindner, M, Lippi, I, Liu, X, Lubashevskiy, A, Lubsandorzhiev, B, Lutter, G, Macolino, C, Machado, A, Majorovits, B, Maneschg, W, Misiaszek, M, Nemchenok, I, Nisi, S, O'Shaughnessy, C, Pandola, L, Pelczar, K, Pessina, G, Pullia, A, Riboldi, S, Rumyantseva, N, Sada, C, Salathe, M, Schmitt, C, Schreiner, J, Schulz, O, Schwingenheuer, B, Schönert, S, Shevchik, E, Shirchenko, M, Simgen, H, Smolnikov, A, Stanco, L, Strecker, H, Tarka, M, Ur, C, Vasenko, A, Volynets, O, Von Sturm, K, Wagner, V, Walter, M, Wegmann, A, Wester, T, Wojcik, M, Yanovich, E, Zavarise, P, Zhitnikov, I, Zhukov, S, Zinatulina, D, Zuber, K, Zuzel, G., GOTTI, CLAUDIO, Agostini, M, Allardt, M, Andreotti, E, Bakalyarov, A, Balata, M, Barabanov, I, Barnabé Heider, M, Barros, N, Baudis, L, Bauer, C, Becerici Schmidt, N, Bellotti, E, Belogurov, S, Belyaev, S, Benato, G, Bettini, A, Bezrukov, L, Bode, T, Brudanin, V, Brugnera, R, Budjáš, D, Caldwell, A, Cattadori, C, Chernogorov, A, Cossavella, F, Demidova, E, Domula, A, Egorov, V, Falkenstein, R, Ferella, A, Freund, K, Frodyma, N, Gangapshev, A, Garfagnini, A, Gotti, C, Grabmayr, P, Gurentsov, V, Gusev, K, Guthikonda, K, Hampel, W, Hegai, A, Heisel, M, Hemmer, S, Heusser, G, Hofmann, W, Hult, M, Inzhechik, L, Ioannucci, L, Janicskó Csáthy, J, Jochum, J, Junker, M, Kihm, T, Kirpichnikov, I, Kirsch, A, Klimenko, A, Knöpfle, K, Kochetov, O, Kornoukhov, V, Kuzminov, V, Laubenstein, M, Lazzaro, A, Lebedev, V, Lehnert, B, Liao, H, Lindner, M, Lippi, I, Liu, X, Lubashevskiy, A, Lubsandorzhiev, B, Lutter, G, Macolino, C, Machado, A, Majorovits, B, Maneschg, W, Misiaszek, M, Nemchenok, I, Nisi, S, O'Shaughnessy, C, Pandola, L, Pelczar, K, Pessina, G, Pullia, A, Riboldi, S, Rumyantseva, N, Sada, C, Salathe, M, Schmitt, C, Schreiner, J, Schulz, O, Schwingenheuer, B, Schönert, S, Shevchik, E, Shirchenko, M, Simgen, H, Smolnikov, A, Stanco, L, Strecker, H, Tarka, M, Ur, C, Vasenko, A, Volynets, O, Von Sturm, K, Wagner, V, Walter, M, Wegmann, A, Wester, T, Wojcik, M, Yanovich, E, Zavarise, P, Zhitnikov, I, Zhukov, S, Zinatulina, D, Zuber, K, and Zuzel, G
Subjects: Physics and Astronomy (all)
Abstract: Neutrinoless double beta decay is a process that violates lepton number conservation. It is predicted to occur in extensions of the standard model of particle physics. This Letter reports the results from phase I of the Germanium Detector Array (GERDA) experiment at the Gran Sasso Laboratory (Italy) searching for neutrinoless double beta decay of the isotope Ge76. Data considered in the present analysis have been collected between November 2011 and May 2013 with a total exposure of 21.6 kg yr. A blind analysis is performed. The background index is about 1×10-2 counts/(keV kg yr) after pulse shape discrimination. No signal is observed and a lower limit is derived for the half-life of neutrinoless double beta decay of Ge76, T1/20ν>2.1×1025 yr (90% C.L.). The combination with the results from the previous experiments with Ge76 yields T1/20ν>3.0×1025 yr (90% C.L.). © 2013 American Physical Society.
Published: 2013

41. Results on ββ decay with emission of two neutrinos or Majorons in 76Ge from GERDA Phase I: GERDA Collaboration

Author: GERDA Collaboration, Agostini, M, Allardt, M, Bakalyarov, AM, Balata, M, Barabanov, I, Barros, N, Baudis, L, Bauer, C, Becerici-Schmidt, N, Bellotti, E, Belogurov, S, Belyaev, ST, Benato, G, Bettini, A, Bezrukov, L, Bode, T, Borowicz, D, Brudanin, V, Brugnera, R, Budjáš, D, Caldwell, A, Cattadori, C, Chernogorov, A, D’Andrea, V, Demidova, EV, di Vacri, A, Domula, A, Doroshkevich, E, Egorov, V, Falkenstein, R, Fedorova, O, Freund, K, Frodyma, N, Gangapshev, A, Garfagnini, A, Grabmayr, P, Gurentsov, V, Gusev, K, Hegai, A, Heisel, M, Hemmer, S, Heusser, G, Hofmann, W, Hult, M, Inzhechik, LV, Csáthy, JJ, Jochum, J, Junker, M, Kazalov, V, Kihm, T, Kirpichnikov, IV, Kirsch, A, Klimenko, A, Knöpfle, KT, Kochetov, O, Kornoukhov, VN, Kuzminov, VV, Laubenstein, M, Lazzaro, A, Lebedev, VI, Lehnert, B, Liao, HY, Lindner, M, Lippi, I, Lubashevskiy, A, Lubsandorzhiev, B, Lutter, G, Macolino, C, Majorovits, B, Maneschg, W, Medinaceli, E, Misiaszek, M, Moseev, P, Nemchenok, I, Palioselitis, D, Panas, K, Pandola, L, Pelczar, K, Pullia, A, Riboldi, S, Rumyantseva, N, Sada, C, Salathe, M, Schmitt, C, Schneider, B, Schönert, S, Schreiner, J, Schütz, AK, Schulz, O, Schwingenheuer, B, Selivanenko, O, Shirchenko, M, Simgen, H, Smolnikov, A, Stanco, L, Stepaniuk, M, Ur, CA, Vanhoefer, L, and Vasenko, AA
Subjects: Quantum Physics, Particle and Plasma Physics, Molecular, Nuclear, nucl-ex, physics.ins-det, Nuclear & Particles Physics, Atomic
Abstract: A search for neutrinoless ββ decay processes accompanied with Majoron emission has been performed using data collected during PhaseI of the GERmanium Detector Array (GERDA) experiment at the Laboratori Nazionali del Gran Sasso of INFN (Italy). Processes with spectral indices n = 1, 2, 3, 7 were searched for. No signals were found and lower limits of the order of 1023yr on their half-lives were derived, yielding substantially improved results compared to previous experiments with 76Ge. A new result for the half-life of the neutrino-accompanied ββ decay of 76Ge with significantly reduced uncertainties is also given, resulting in (Formula presented.) yr.
Published: 2015

42. Spectroscopic Quadrupole Moments in {96,98}Sr: Evidence for Shape Coexistence in Neutron-Rich Strontium Isotopes at N=60

Author: Clément, E., Zielińska, M., Görgen, A., Korten, W., Péru, S., Libert, J., Goutte, H., Hilaire, S., Bastin, B., Bauer, C., Blazhev, A., Bree, N., Bruyneel, B., Butler, P. A., Butterworth, J., Delahaye, P., Dijon, A., Doherty, D. T., Ekström, A., Fitzpatrick, C., Fransen, C., Georgiev, G., Gernhäuser, R., Hess, H., Iwanicki, J., Jenkins, D. G., Larsen, A. C., Ljungvall, J., Lutter, R., Marley, P., Moschner, K., Napiorkowski, P. J., Pakarinen, J., Petts, A., Reiter, P., Renstrøm, T., Seidlitz, M., Siebeck, B., Siem, S., Sotty, C., Srebrny, J., Stefanescu, I., Tveten, G. M., Van de Walle, J., Vermeulen, M., Voulot, D., Warr, N., Wenander, F., Wiens, A., De Witte, H., and Wrzosek-Lipska, K.
Abstract: Neutron-rich {96,98}Sr isotopes have been investigated by safe Coulomb excitation of radioactive beams at the REX-ISOLDE facility. Reduced transition probabilities and spectroscopic quadrupole moments have been extracted from the differential Coulomb excitation cross sections. These results allow, for the first time, the drawing of definite conclusions about the shape coexistence of highly deformed prolate and spherical configurations. In particular, a very small mixing between the coexisting states is observed, contrary to other mass regions where strong mixing is present. Experimental results have been compared to beyond-mean-field calculations using the Gogny D1S interaction in a five-dimensional collective Hamiltonian formalism, which reproduce the shape change at N=60.
Published: 2015

43. Results on ββ decay with emission of two neutrinos or Majorons in 76Ge from GERDA Phase I

Author: GERDA Collaboration, Agostini, M, Allardt, M, Bakalyarov, AM, Balata, M, Barabanov, I, Barros, N, Baudis, L, Bauer, C, Becerici-Schmidt, N, Bellotti, E, Belogurov, S, Belyaev, ST, Benato, G, Bettini, A, Bezrukov, L, Bode, T, Borowicz, D, Brudanin, V, Brugnera, R, Budjáš, D, Caldwell, A, Cattadori, C, Chernogorov, A, D’Andrea, V, Demidova, EV, di Vacri, A, Domula, A, Doroshkevich, E, Egorov, V, Falkenstein, R, Fedorova, O, Freund, K, Frodyma, N, Gangapshev, A, Garfagnini, A, Grabmayr, P, Gurentsov, V, Gusev, K, Hegai, A, Heisel, M, Hemmer, S, Heusser, G, Hofmann, W, Hult, M, Inzhechik, LV, Csáthy, J Janicskó, Jochum, J, Junker, M, Kazalov, V, Kihm, T, Kirpichnikov, IV, Kirsch, A, Klimenko, A, Knöpfle, KT, Kochetov, O, Kornoukhov, VN, Kuzminov, VV, Laubenstein, M, Lazzaro, A, Lebedev, VI, Lehnert, B, Liao, HY, Lindner, M, Lippi, I, Lubashevskiy, A, Lubsandorzhiev, B, Lutter, G, Macolino, C, Majorovits, B, Maneschg, W, Medinaceli, E, Misiaszek, M, Moseev, P, Nemchenok, I, Palioselitis, D, Panas, K, Pandola, L, Pelczar, K, Pullia, A, Riboldi, S, Rumyantseva, N, Sada, C, Salathe, M, Schmitt, C, Schneider, B, Schönert, S, Schreiner, J, Schütz, A-K, Schulz, O, Schwingenheuer, B, Selivanenko, O, Shirchenko, M, Simgen, H, Smolnikov, A, Stanco, L, Stepaniuk, M, Ur, CA, Vanhoefer, L, and Vasenko, AA
Subjects: Quantum Physics, Particle and Plasma Physics, Molecular, Nuclear, nucl-ex, physics.ins-det, Atomic, Nuclear & Particles Physics
Abstract: A search for neutrinoless ββ decay processes accompanied with Majoron emission has been performed using data collected during PhaseI of the GERmanium Detector Array (GERDA) experiment at the Laboratori Nazionali del Gran Sasso of INFN (Italy). Processes with spectral indices n = 1, 2, 3, 7 were searched for. No signals were found and lower limits of the order of 1023yr on their half-lives were derived, yielding substantially improved results compared to previous experiments with 76Ge. A new result for the half-life of the neutrino-accompanied ββ decay of 76Ge with significantly reduced uncertainties is also given, resulting in (Formula presented.) yr.
Published: 2015

44. Improvement of the energy resolution via an optimized digital signal processing in GERDA Phase I

Author: GERDA Collaboration, Agostini, M, Allardt, M, Bakalyarov, AM, Balata, M, Barabanov, I, Barros, N, Baudis, L, Bauer, C, Becerici-Schmidt, N, Bellotti, E, Belogurov, S, Belyaev, ST, Benato, G, Bettini, A, Bezrukov, L, Bode, T, Borowicz, D, Brudanin, V, Brugnera, R, Budjáš, D, Caldwell, A, Cattadori, C, Chernogorov, A, D’Andrea, V, Demidova, EV, Vacri, AD, Domula, A, Doroshkevich, E, Egorov, V, Falkenstein, R, Fedorova, O, Freund, K, Frodyma, N, Gangapshev, A, Garfagnini, A, Grabmayr, P, Gurentsov, V, Gusev, K, Hegai, A, Heisel, M, Hemmer, S, Heusser, G, Hofmann, W, Hult, M, Inzhechik, LV, Janicskó Csáthy, J, Jochum, J, Junker, M, Kazalov, V, Kihm, T, Kirpichnikov, IV, Kirsch, A, Klimenko, A, Knöpfle, KT, Kochetov, O, Kornoukhov, VN, Kuzminov, VV, Laubenstein, M, Lazzaro, A, Lebedev, VI, Lehnert, B, Liao, HY, Lindner, M, Lippi, I, Lubashevskiy, A, Lubsandorzhiev, B, Lutter, G, Macolino, C, Majorovits, B, Maneschg, W, Medinaceli, E, Misiaszek, M, Moseev, P, Nemchenok, I, Palioselitis, D, Panas, K, Pandola, L, Pelczar, K, Pullia, A, Riboldi, S, Rumyantseva, N, Sada, C, Salathe, M, Schmitt, C, Schneider, B, Schönert, S, Schreiner, J, Schütz, AK, Schulz, O, Schwingenheuer, B, Selivanenko, O, Shirchenko, M, Simgen, H, Smolnikov, A, Stanco, L, Stepaniuk, M, Ur, CA, Vanhoefer, L, and Vasenko, AA
Subjects: Quantum Physics, Particle and Plasma Physics, Molecular, Nuclear, nucl-ex, physics.ins-det, Nuclear & Particles Physics, Atomic
Abstract: An optimized digital shaping filter has been developed for the Gerda experiment which searches for neutrinoless double beta decay in $$^{76}$$76Ge. The Gerda PhaseI energy calibration data have been reprocessed and an average improvement of 0.3keV in energy resolution (FWHM) corresponding to 10% at the $$Q$$Q value for $$0\nu \beta \beta $$0νββ decay in $$^{76}$$76Ge is obtained. This is possible thanks to the enhanced low-frequency noise rejection of this Zero Area Cusp (ZAC) signal shaping filter.
Published: 2015

45. Production, characterization and operation of 76Ge enriched BEGe detectors in GERDA

Author: Agostini, M, Allardt, M, Andreotti, E, Bakalyarov, AM, Balata, M, Barabanov, I, Barros, N, Baudis, L, Bauer, C, Becerici-Schmidt, N, Bellotti, E, Belogurov, S, Belyaev, ST, Benato, G, Bettini, A, Bezrukov, L, Bode, T, Borowicz, D, Brudanin, V, Brugnera, R, Budjáš, D, Caldwell, A, Cattadori, C, Chernogorov, A, D’Andrea, V, Demidova, EV, Domula, A, Egorov, V, Falkenstein, R, Freund, K, Frodyma, N, Gangapshev, A, Garfagnini, A, Gotti, C, Grabmayr, P, Gurentsov, V, Gusev, K, Hegai, A, Heisel, M, Hemmer, S, Heusser, G, Hofmann, W, Hult, M, Inzhechik, LV, Ioannucci, L, Janicskó Csáthy, J, Jochum, J, Junker, M, Kazalov, V, Kihm, T, Kirpichnikov, IV, Kirsch, A, Klimenko, A, Knöpfle, KT, Kochetov, O, Kornoukhov, VN, Kuzminov, VV, Laubenstein, M, Lazzaro, A, Lebedev, VI, Lehnert, B, Liao, HY, Lindner, M, Lippi, I, Lubashevskiy, A, Lubsandorzhiev, B, Lutter, G, Macolino, C, Majorovits, B, Maneschg, W, Misiaszek, M, Nemchenok, I, Nisi, S, O’Shaughnessy, C, Palioselitis, D, Pandola, L, Pelczar, K, Pessina, G, Pullia, A, Riboldi, S, Rumyantseva, N, Sada, C, Salathe, M, Schmitt, C, Schreiner, J, Schulz, O, Schütz, A-K, Schwingenheuer, B, Schönert, S, Shevchik, E, Shirchenko, M, Simgen, H, Smolnikov, A, Stanco, L, Strecker, H, Ur, CA, Vanhoefer, L, Vasenko, AA, von Sturm, K, and Wagner, V
Subjects: Quantum Physics, Particle and Plasma Physics, hep-ex, Molecular, Nuclear, nucl-ex, physics.ins-det, Atomic, Nuclear & Particles Physics
Abstract: The GERmanium Detector Array (Gerda) at the Gran Sasso Underground Laboratory (LNGS) searches for the neutrinoless double beta decay (0νββ) of 76Ge. Germanium detectors made of material with an enriched 76Ge fraction act simultaneously as sources and detectors for this decay. During PhaseI of theexperiment mainly refurbished semi-coaxial Ge detectors from former experiments were used. For the upcoming PhaseII, 30 new 76Ge enriched detectors of broad energy germanium (BEGe)-type were produced. A subgroup of these detectors has already been deployed in Gerda during PhaseI. The present paper reviews the complete production chain of these BEGe detectors including isotopic enrichment, purification, crystal growth and diode production. The efforts in optimizing the mass yield and in minimizing the exposure of the 76Ge enriched germanium to cosmic radiation during processing are described. Furthermore, characterization measurements in vacuum cryostats of the first subgroup of seven BEGe detectors and their long-term behavior in liquid argon are discussed. The detector performance fulfills the requirements needed for the physics goals of Gerda PhaseII.
Published: 2015

46. $2��$ decay of $^{76}$Ge into excited states with GERDA Phase I

Author: Agostini, M., Allardt, M., Bakalyarov, A. M., Balata, M., Barabanov, I., Barros, N., Baudis, L., Bauer, C., Becerici-Schmidt, N., Bellotti, E., Belogurov, S., Belyaev, S. T., Benato, G., Bettini, A., Bezrukov, L., Bode, T., Borowicz, D., Brudanin, V., Brugnera, R., Budj��, D., Caldwell, A., Cattadori, C., Chernogorov, A., D'Andrea, V., Demidova, E. V., di Vacri, A., Domula, A., Doroshkevich, E., Egorov, V., Falkenstein, R., Fedorova, O., Freund, K., Frodyma, N., Gangapshev, A., Garfagnini, A., Gooch, C., Grabmayr, P., Gurentsov, V., Gusev, K., Hegai, A., Heisel, M., Hemmer, S., Heusser, G., Hofmann, W., Hult, M., Inzhechik, L. V., Cs��thy, J. Janicsk��, Jochum, J., Junker, M., Kazalov, V., Kihm, T., Kirpichnikov, I. V., Kirsch, A., Klimenko, A., Kn��pfle, K. T., Kochetov, O., Kornoukhov, V. N., Kuzminov, V. V., Laubenstein, M., Lazzaro, A., Lebedev, V. I., Lehnert, B., Liao, H. Y., Lindner, M., Lippi, I., Lubashevskiy, A., Lubsandorzhiev, B., Lutter, G., Macolino, C., Majorovits, B., Maneschg, W., Medinaceli, E., Mi, Y., Misiaszek, M., Moseev, P., Nemchenok, I., Palioselitis, D., Panas, K., Pandola, L., Pelczar, K., Pullia, A., Riboldi, S., Rumyantseva, N., Sada, C., Salathe, M., Schmitt, C., Schneider, B., Schreiner, J., Schulz, O., Schwingenheuer, B., Sch��nert, S., Sch��tz, A-K., Selivanenko, O., Shirchenko, M., Simgen, H., Smolnikov, A., Stanco, L., Stepaniuk, M., Ur, C. A., Vanhoefer, L., Vasenko, A. A., Veresnikova, A., von Sturm, K., Wagner, V., Walter, M., Wegmann, A., Wester, T., Wilsenach, H., Wojcik, M., Yanovich, E., Zavarise, P., Zhitnikov, I., Zhukov, S. V., Zinatulina, D., Zuber, K., and Zuzel, G.
Subjects: High Energy Physics - Experiment (hep-ex), FOS: Physical sciences, Nuclear Experiment (nucl-ex)
Abstract: Two neutrino double beta decay of $^{76}$Ge to excited states of $^{76}$Se has been studied using data from Phase I of the GERDA experiment. An array composed of up to 14 germanium detectors including detectors that have been isotopically enriched in $^{76}$Ge was deployed in liquid argon. The analysis of various possible transitions to excited final states is based on coincidence events between pairs of detectors where a de-excitation $��$ ray is detected in one detector and the two electrons in the other. No signal has been observed and an event counting profile likelihood analysis has been used to determine Frequentist 90\,\% C.L. bounds for three transitions: ${0^+_{\rm g.s.}-2^+_1}$: $T^{2��}_{1/2}>$1.6$\cdot10^{23}$ yr, ${0^+_{\rm g.s.}-0^+_1}$: $T^{2��}_{1/2}>$3.7$\cdot10^{23}$ yr and ${0^+_{\rm g.s.}-2^+_2}$: $T^{2��}_{1/2}>$2.3$\cdot10^{23}$ yr. These bounds are more than two orders of magnitude larger than those reported previously. Bayesian 90\,\% credibility bounds were extracted and used to exclude several models for the ${0^+_{\rm g.s.}-0^+_1}$ transition.
Published: 2015
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47. Production, characterization and operation of 76Ge enriched BEGe detectors in GERDA: GERDA Collaboration

Author: Agostini, M, Allardt, M, Andreotti, E, Bakalyarov, AM, Balata, M, Barabanov, I, Barros, N, Baudis, L, Bauer, C, Becerici-Schmidt, N, Bellotti, E, Belogurov, S, Belyaev, ST, Benato, G, Bettini, A, Bezrukov, L, Bode, T, Borowicz, D, Brudanin, V, Brugnera, R, Budjáš, D, Caldwell, A, Cattadori, C, Chernogorov, A, D’Andrea, V, Demidova, EV, Domula, A, Egorov, V, Falkenstein, R, Freund, K, Frodyma, N, Gangapshev, A, Garfagnini, A, Gotti, C, Grabmayr, P, Gurentsov, V, Gusev, K, Hegai, A, Heisel, M, Hemmer, S, Heusser, G, Hofmann, W, Hult, M, Inzhechik, LV, Ioannucci, L, Janicskó Csáthy, J, Jochum, J, Junker, M, Kazalov, V, Kihm, T, Kirpichnikov, IV, Kirsch, A, Klimenko, A, Knöpfle, KT, Kochetov, O, Kornoukhov, VN, Kuzminov, VV, Laubenstein, M, Lazzaro, A, Lebedev, VI, Lehnert, B, Liao, HY, Lindner, M, Lippi, I, Lubashevskiy, A, Lubsandorzhiev, B, Lutter, G, Macolino, C, Majorovits, B, Maneschg, W, Misiaszek, M, Nemchenok, I, Nisi, S, O’Shaughnessy, C, Palioselitis, D, Pandola, L, Pelczar, K, Pessina, G, Pullia, A, Riboldi, S, Rumyantseva, N, Sada, C, Salathe, M, Schmitt, C, Schreiner, J, Schulz, O, Schütz, AK, Schwingenheuer, B, Schönert, S, Shevchik, E, Shirchenko, M, Simgen, H, Smolnikov, A, Stanco, L, Strecker, H, Ur, CA, Vanhoefer, L, Vasenko, AA, von Sturm, K, and Wagner, V
Subjects: Quantum Physics, Particle and Plasma Physics, Physics::Instrumentation and Detectors, hep-ex, Molecular, High Energy Physics::Experiment, Nuclear, Nuclear Experiment, nucl-ex, physics.ins-det, Nuclear & Particles Physics, Atomic
Abstract: The GERmanium Detector Array (Gerda) at the Gran Sasso Underground Laboratory (LNGS) searches for the neutrinoless double beta decay (0νββ) of 76Ge. Germanium detectors made of material with an enriched 76Ge fraction act simultaneously as sources and detectors for this decay. During PhaseI of theexperiment mainly refurbished semi-coaxial Ge detectors from former experiments were used. For the upcoming PhaseII, 30 new 76Ge enriched detectors of broad energy germanium (BEGe)-type were produced. A subgroup of these detectors has already been deployed in Gerda during PhaseI. The present paper reviews the complete production chain of these BEGe detectors including isotopic enrichment, purification, crystal growth and diode production. The efforts in optimizing the mass yield and in minimizing the exposure of the 76Ge enriched germanium to cosmic radiation during processing are described. Furthermore, characterization measurements in vacuum cryostats of the first subgroup of seven BEGe detectors and their long-term behavior in liquid argon are discussed. The detector performance fulfills the requirements needed for the physics goals of Gerda PhaseII.
Published: 2015

48. A precise measurement of the average b hadron lifetime

Author: Buskulic, Damir, Casper, David William, De Bonis, I, Décamp, D, Ghez, P, Goy, C, Lees, J P, Lucotte, A, Minard, M N, Odier, P, Pietrzyk, B, Ariztizabal, F, Chmeissani, M, Crespo, J M, Efthymiopoulos, I, Fernández, E, Fernández-Bosman, M, Gaitan, V, Garrido, L, Martínez, M, Orteu, S, Pacheco, A, Padilla, C, Palla, Fabrizio, Pascual, A, Perlas, J A, Sánchez, F, Teubert, F, Colaleo, A, Creanza, D, De Palma, M, Farilla, A, Gelao, G, Girone, M, Iaselli, Giuseppe, Maggi, G, Maggi, M, Marinelli, N, Natali, S, Nuzzo, S, Ranieri, A, Raso, G, Romano, F, Ruggieri, F, Selvaggi, G, Silvestris, L, Tempesta, P, Zito, G, Huang, X, Lin, J, Ouyang, Q, Wang, T, Xie, Y, Xu, R, Xue, S, Zhang, J, Zhang, L, Zhao, W, Bonvicini, G, Cattaneo, M, Comas, P, Coyle, P, Drevermann, H, Engelhardt, A, Forty, Roger W, Frank, M, Hagelberg, R, Harvey, J, Jacobsen, R, Janot, P, Jost, B, Knobloch, J, Lehraus, Ivan, Markou, C, Martin, E B, Mato, P, Meinhard, H, Minten, Adolf G, Miquel, R, Oest, T, Palazzi, P, Pater, J R, Pusztaszeri, J F, Ranjard, F, Rensing, P E, Rolandi, Luigi, Schlatter, W D, Schmelling, M, Schneider, O, Tejessy, W, Tomalin, I R, Venturi, A, Wachsmuth, H W, Wiedenmann, W, Wildish, T, Witzeling, W, Wotschack, J, Ajaltouni, Ziad J, Bardadin-Otwinowska, Maria, Barrès, A, Boyer, C, Falvard, A, Gay, P, Guicheney, C, Henrard, P, Jousset, J, Michel, B, Monteil, S, Montret, J C, Pallin, D, Perret, P, Podlyski, F, Proriol, J, Rossignol, J M, Saadi, F, Fearnley, Tom, Hansen, J B, Hansen, J D, Hansen, J R, Hansen, P H, Nilsson, B S, Kyriakis, A, Simopoulou, Errietta, Siotis, I, Vayaki, Anna, Zachariadou, K, Blondel, A, Bonneaud, G R, Brient, J C, Bourdon, P, Passalacqua, L, Rougé, A, Rumpf, M, Tanaka, R, Valassi, Andrea, Verderi, M, Videau, H L, Candlin, D J, Parsons, M I, Focardi, E, Parrini, G, Corden, M, Delfino, M C, Georgiopoulos, C H, Jaffe, D E, Antonelli, A, Bencivenni, G, Bologna, G, Bossi, F, Campana, P, Capon, G, Chiarella, V, Felici, G, Laurelli, P, Mannocchi, G, Murtas, F, Murtas, G P, Pepé-Altarelli, M, Dorris, S J, Halley, A W, ten Have, I, Knowles, I G, Lynch, J G, Morton, W T, O'Shea, V, Raine, C, Reeves, P, Scarr, J M, Smith, K, Smith, M G, Thompson, A S, Thomson, F, Thorn, S, Turnbull, R M, Becker, U, Braun, O, Geweniger, C, Graefe, G, Hanke, P, Hepp, V, Kluge, E E, Putzer, A, Rensch, B, Schmidt, M, Sommer, J, Stenzel, H, Tittel, K, Werner, S, Wunsch, M, Beuselinck, R, Binnie, David M, Cameron, W, Colling, D J, Dornan, Peter J, Konstantinidis, N P, Moneta, L, Moutoussi, A, Nash, J, San Martin, G, Sedgbeer, J K, Stacey, A M, Dissertori, G, Girtler, P, Kneringer, E, Kuhn, D, Rudolph, G, Bowdery, C K, Brodbeck, T J, Colrain, P, Crawford, G, Finch, A J, Foster, F, Hughes, G, Sloan, Terence, Whelan, E P, Williams, M I, Galla, A, Greene, A M, Kleinknecht, K, Quast, G, Raab, J, Renk, B, Sander, H G, Wanke, R, Van Gemmeren, P, Zeitnitz, C, Aubert, Jean-Jacques, Bencheikh, A M, Benchouk, C, Bonissent, A, Bujosa, G, Calvet, D, Carr, J, Diaconu, C A, Etienne, F, Thulasidas, M, Nicod, D, Payre, P, Rousseau, D, Talby, M, Abt, I, Assmann, R W, Bauer, C, Blum, Walter, Brown, D, Dietl, H, Dydak, Friedrich, Ganis, G, Gotzhein, C, Jakobs, K, Kroha, H, Lütjens, G, Lutz, Gerhard, Männer, W, Moser, H G, Richter, R H, Rosado-Schlosser, A, Schael, S, Settles, Ronald, Seywerd, H C J, Stierlin, U, Saint-Denis, R, Wolf, G, Alemany, R, Boucrot, J, Callot, O, Cordier, A, Courault, F, Davier, M, Duflot, L, Grivaz, J F, Heusse, P, Jacquet, M, Kim, D W, Le Diberder, F R, Lefrançois, J, Lutz, A M, Musolino, G, Nikolic, I A, Park, H J, Park, I C, Schune, M H, Simion, S, Veillet, J J, Videau, I, Abbaneo, D, Azzurri, P, Bagliesi, G, Batignani, G, Bettarini, S, Bozzi, C, Calderini, G, Carpinelli, M, Ciocci, M A, Ciulli, V, Dell'Orso, R, Fantechi, R, Ferrante, I, Foà, L, Forti, F, Giassi, A, Giorgi, M A, Gregorio, A, Ligabue, F, Lusiani, A, Marrocchesi, P S, Messineo, A, Rizzo, G, Sanguinetti, G, Sciabà, A, Spagnolo, P, Steinberger, Jack, Tenchini, Roberto, Tonelli, G, Triggiani, G, Vannini, C, Verdini, P G, Walsh, J, Betteridge, A P, Blair, G A, Bryant, L M, Cerutti, F, Gao, Y, Green, M G, Johnson, D L, Medcalf, T, Mir, L M, Perrodo, P, Strong, J A, Bertin, V, Botterill, David R, Clifft, R W, Edgecock, T R, Haywood, S, Edwards, M, Maley, P, Norton, P R, Thompson, J C, Bloch-Devaux, B, Colas, P, Duarte, H, Emery, S, Kozanecki, Witold, Lançon, E, Lemaire, M C, Locci, E, Marx, B, Pérez, P, Rander, J, Renardy, J F, Rosowsky, A, Roussarie, A, Schuller, J P, Schwindling, J, Si Mohand, D, Trabelsi, A, Vallage, B, Johnson, R P, Kim, H Y, Litke, A M, McNeil, M A, Taylor, G, Beddall, A, Booth, C N, Boswell, R, Cartwright, S L, Combley, F, Dawson, I, Köksal, A, Letho, M, Newton, W M, Rankin, C, Thompson, L F, Böhrer, A, Brandt, S, Cowan, G D, Feigl, E, Grupen, Claus, Lutters, G, Minguet-Rodríguez, J A, Rivera, F, Saraiva, P, Smolik, L, Stephan, F, Apollonio, M, Bosisio, L, Della Marina, R, Giannini, G, Gobbo, B, Ragusa, F, Rothberg, J E, Wasserbaech, S R, Armstrong, S R, Bellantoni, L, Elmer, P, Feng, P, Ferguson, D P S, Gao, Y S, González, S, Grahl, J, Harton, J L, Hayes, O J, Hu, H, McNamara, P A, Nachtman, J M, Orejudos, W, Pan, Y B, Saadi, Y, Schmitt, M, Scott, I J, Sharma, V, Turk, J, Walsh, A M, Wu Sau Lan, Wu, X, Yamartino, J M, Zheng, M, Zobernig, G, 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 de Physique Corpusculaire - Clermont-Ferrand (LPC), Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-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), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), ALEPH, Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), D., Buskulic, I., De Boni, D., Casper, D., Decamp, P., Ghez, C., Goy, J. P., Lee, A., Lucotte, M. N., Minard, P., Odier, B., Pietrzyk, F., Ariztizabal, M., Chmeissani, J. M., Crespo, I., Efthymiopoulo, E., Fernandez, M., Fernandez Bosman, V., Gaitan, Garrido, L. l., M., Martinez, S., Orteu, A., Pacheco, C., Padilla, F., Palla, A., Pascual, J. A., Perla, F., Sanchez, F., Teubert, A., Colaleo, D., Creanza, M., de Palma, A., Farilla, G., Gelao, M., Girone, G., Iaselli, G., Maggi, M., Maggi, N., Marinelli, S., Natali, S., Nuzzo, A., Ranieri, G., Raso, F., Romano, F., Ruggieri, G., Selvaggi, L., Silvestri, P., Tempesta, G., Zito, X., Huang, J., Lin, Q., Ouyang, T., Wang, Y., Xie, R., Xu, S., Xue, J., Zhang, L., Zhang, W., Zhao, G., Bonvicini, M., Cattaneo, P., Coma, P., Coyle, H., Drevermann, R. W., Forty, M., Frank, R., Hagelberg, J., Harvey, R., Jacobsen, P., Janot, B., Jost, J., Knobloch, I., Lehrau, C., Markou, E. B., Martin, P., Mato, A., Minten, R., Miquel, T., Oest, P., Palazzi, J. R., Pater, J. F., Pusztaszeri, F., Ranjard, P., Rensing, L., Rolandi, D., Schlatter, M., Schmelling, O., Schneider, W., Tejessy, I. R., Tomalin, A., Venturi, H., Wachsmuth, W., Wiedenmann, T., Wildish, W., Witzeling, J., Wotschack, Z., Ajaltouni, M., Bardadin Otwinowska, A., Barrè, C., Boyer, A., Falvard, P., Gay, C., Guicheney, P., Henrard, J., Jousset, B., Michel, S., Monteil, J. C., Montret, D., Pallin, P., Perret, F., Podlyski, J., Proriol, J. M., Rossignol, F., Saadi, T., Fearnley, J. B., Hansen, J. D., Hansen, J. R., Hansen, P. H., Hansen, B. S., Nilsson, A., Kyriaki, E., Simopoulou, I., Sioti, A., Vayaki, K., Zachariadou, A., Blondel, G., Bonneaud, J. C., Brient, P., Bourdon, L., Passalacqua, A., Rougé, M., Rumpf, R., Tanaka, A., Valassi, M., Verderi, H., Videau, D. J., Candlin, M. I., Parson, E., Focardi, G., Parrini, M., Corden, M., Delfino, C., Georgiopoulo, D. E., Jaffe, A., Antonelli, G., Bencivenni, G., Bologna, F., Bossi, P., Campana, G., Capon, V., Chiarella, G., Felici, P., Laurelli, G., Mannocchi, F., Murta, G. P., Murta, M., Pepe Altarelli, S. J., Dorri, A. W., Halley, I., ten Have, I. G., Knowle, J. G., Lynch, W. T., Morton, V., O'Shea, C., Raine, P., Reeve, J. M., Scarr, K., Smith, M. G., Smith, A. S., Thompson, F., Thomson, S., Thorn, R. M., Turnbull, U., Becker, O., Braun, C., Geweniger, G., Graefe, P., Hanke, V., Hepp, E. E., Kluge, A., Putzer, B., Rensch, M., Schmidt, J., Sommer, H., Stenzel, K., Tittel, S., Werner, M., Wunsch, D., Abbaneo, R., Beuselinck, D. M., Binnie, W., Cameron, D. J., Colling, P. J., Dornan, N., Konstantinidi, L., Moneta, A., Moutoussi, J., Nash, G., San Martin, J. K., Sedgbeer, A. M., Stacey, G., Dissertori, P., Girtler, E., Kneringer, D., Kuhn, G., Rudolph, C. K., Bowdery, T. J., Brodbeck, P., Colrain, G., Crawford, A. J., Finch, F., Foster, G., Hughe, T., Sloan, E. P., Whelan, M. I., William, A., Galla, A. M., Greene, K., Kleinknecht, G., Quast, J., Raab, B., Renk, H. G., Sander, P., van Gemmeren, R., Wanke, C., Zeitnitz, J. J., Aubert, A. M., Bencheikh, C., Benchouk, A., Bonissent, G., Bujosa, D., Calvet, J., Carr, C., Diaconu, F., Etienne, D., Nicod, P., Payre, D., Rousseau, M., Talby, M., Thulasida, I., Abt, R., Assmann, C., Bauer, W., Blum, D., Brown, H., Dietl, F., Dydak, G., Gani, C., Gotzhein, K., Jakob, H., Kroha, G., Lütjen, G., Lutz, W., Männer, H. G., Moser, R., Richter, A., Rosado Schlosser, S., Schael, R., Settle, H., Seywerd, U., Stierlin, Denis, R. S. t., G., Wolf, R., Alemany, J., Boucrot, O., Callot, A., Cordier, F., Courault, M., Davier, L., Duflot, J. F., Grivaz, Heusse, P. h., M., Jacquet, D. W., Kim, F., Le Diberder, J., Lefrançoi, A. M., Lutz, G., Musolino, I., Nikolic, H. J., Park, I. C., Park, M. H., Schune, S., Simion, J. J., Veillet, I., Videau, P., Azzurri, G., Bagliesi, G., Batignani, S., Bettarini, C., Bozzi, G., Calderini, M., Carpinelli, M. A., Ciocci, V., Ciulli, R., Dell'Orso, R., Fantechi, I., Ferrante, L., Foà, F., Forti, A., Giassi, M. A., Giorgi, Gregorio, Anna, F., Ligabue, A., Lusiani, P. S., Marrocchesi, A., Messineo, G., Rizzo, G., Sanguinetti, A., Sciabà, P., Spagnolo, J., Steinberger, R., Tenchini, G., Tonelli, G., Triggiani, C., Vannini, P. G., Verdini, J., Walsh, A. P., Betteridge, G. A., Blair, L. M., Bryant, F., Cerutti, Y., Gao, M. G., Green, D. L., Johnson, T., Medcalf, Mir, L. l. M., P., Perrodo, J. A., Strong, V., Bertin, D. R., Botterill, R. W., Clifft, T. R., Edgecock, S., Haywood, M., Edward, P., Maley, P. R., Norton, J. C., Thompson, B., Bloch Devaux, P., Cola, H., Duarte, S., Emery, W., Kozanecki, E., Lançon, M. C., Lemaire, E., Locci, B., Marx, P., Perez, J., Rander, J. F., Renardy, A., Rosowsky, A., Roussarie, J. P., Schuller, J., Schwindling, D., Si Mohand, A., Trabelsi, B., Vallage, R. P., Johnson, H. Y., Kim, A. M., Litke, M. A., Mcneil, G., Taylor, A., Beddall, C. N., Booth, R., Boswell, S., Cartwright, F., Combley, I., Dawson, A., Koksal, M., Letho, W. M., Newton, C., Rankin, L. F., Thompson, A., Böhrer, S., Brandt, G., Cowan, E., Feigl, C., Grupen, G., Lutter, J., Minguet Rodriguez, F., Rivera, P., Saraiva, L., Smolik, F., Stephan, M., Apollonio, Bosisio, Luciano, R., Della Marina, Giannini, Gianrossano, B., Gobbo, F., Ragusa, J., Rothberg, S., Wasserbaech, S. R., Armstrong, L., Bellantoni, P., Elmer, Z., Feng, D. P. S., Ferguson, Y. S., Gao, S., González, J., Grahl, J. L., Harton, O. J., Haye, H., Hu, P. A., Mcnamara, J. M., Nachtman, W., Orejudo, Y. B., Pan, Y., Saadi, M., Schmitt, I. J., Scott, V., Sharma, J. D., Turk, A. M., Walsh, Sau Lan, Wu, X., Wu, J. 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Subjects: Physics, Nuclear and High Energy Physics, Aleph, Particle physics, 010308 nuclear & particles physics, Electron–positron annihilation, High Energy Physics::Phenomenology, Hadron, 01 natural sciences, Silicon vertex detector, ALEPH Experiment, Nuclear physics, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, Impact parameter, 010306 general physics, ALEPH experiment, Particle Physics - Experiment, Lepton
Abstract: An improved measurement of the average b hadron lifetime is performed using a sample of 1.5 million hadronic Z decays, collected during the 1991-1993 runs of ALEPH, with the silicon vertex detector fully operational, This uses the three-dimensional impact parameter distribution of lepton tracks coming from semileptonic b decays and yields an average b hadron lifetime of 1.533 +/- 0.013 +/- 0.022 ps. RI ANTONELLI, ANTONELLA/C-6238-2011; Passalacqua, Luca/F-5127-2011; Murtas, Fabrizio/B-5729-2012; St.Denis, Richard/C-8997-2012; Forti, Francesco/H-3035-2011; Ferrante, Isidoro/F-1017-2012
Published: 1996

49. Observation of B0→D¯(0)K(+)K(-) and evidence for B(s)(0)→D¯(0)K(+)K(-)

Author: Aaij, R, Abellan Beteta, C, Adametz, A, Adeva, B, Adinolfi, M, Adrover, C, Affolder, A, Ajaltouni, Z, Albrecht, J, Alessio, F, Alexander, M, Ali, S, Alkhazov, G, Alvarez Cartelle, P, Alves, A, Amato, S, Amhis, Y, Anderlini, L, Anderson, J, Appleby, R, Aquines Gutierrez, O, Archilli, F, Artamonov, A, Artuso, M, Aslanides, E, Auriemma, G, Bachmann, S, Back, J, Baesso, C, Balagura, V, Baldini, W, Barlow, R, Barschel, C, Barsuk, S, Barter, W, Bates, A, Bauer, C, Bauer, T, Bay, A, Beddow, J, Bediaga, I, Belogurov, S, Belous, K, Belyaev, I, Ben Haim, E, Benayoun, M, Bencivenni, G, Benson, S, Benton, J, Berezhnoy, A, Bernet, R, Bettler, M, Van Beuzekom, M, Bien, A, Bifani, S, Bird, T, Bizzeti, A, Bjørnstad, P, Blake, T, Blanc, F, Blanks, C, Blouw, J, Blusk, S, Bobrov, A, Bocci, V, Bondar, A, Bondar, N, Bonivento, W, Borghi, S, Borgia, A, Bowcock, T, Bozzi, C, Brambach, T, Van Den Brand, J, Bressieux, J, Brett, D, Britsch, M, Britton, T, Brook, N, Brown, H, Büchler Germann, A, Burducea, I, Bursche, A, Buytaert, J, Cadeddu, S, Callot, O, Calvo Gomez, M, Camboni, A, Campana, P, Carbone, A, Carboni, G, Cardinale, R, Cardini, A, Carson, L, Carvalho Akiba, K, Casse, G, Cattaneo, M, Cauet, C, Charles, M, Charpentier, P, Chen, P, Chiapolini, N, Chrzaszcz, M, Ciba, K, Cid Vidal, X, Ciezarek, G, Clarke, P, Clemencic, M, Cliff, H, Closier, J, Coca, C, Coco, V, Cogan, J, Cogneras, E, Collins, P, Comerma Montells, A, Contu, A, Cook, A, Coombes, M, Corti, G, Couturier, B, Cowan, G, Craik, D, Cunliffe, S, Currie, R, D'Ambrosio, C, David, P, De Bonis, I, De Bruyn, K, De Capua, S, De Cian, M, De Miranda, J, De Paula, L, De Simone, P, Decamp, D, Deckenhoff, M, Degaudenzi, H, Del Buono, L, Deplano, C, Derkach, D, Deschamps, O, Dettori, F, Dickens, J, Dijkstra, H, Diniz Batista, P, Domingo Bonal, F, Donleavy, S, Dordei, F, Dosil Suárez, A, Dossett, D, Dovbnya, A, Dupertuis, F, Dzhelyadin, R, Dziurda, A, Dzyuba, A, Easo, S, Egede, U, Egorychev, V, Eidelman, S, Eisele, F, 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Subjects: Heavy Flavour Physics, LHC Collider
Abstract: The first observation of the decay B0→D¯(0)K(+)K(-) is reported from an analysis of 0.62 fb(-1) of pp collision data collected with the LHCb detector. Its branching fraction is measured relative to that of the topologically similar decay B(0)→D ¯(0)π(+)π(-) to be (B(B(0)→D¯(0)K(+)K(-))/B(B(0)→D¯(0)π(+)π(-))=0.056±0.011±0.007,where the first uncertainty is statistical and the second is systematic. The significance of the signal is 5.8σ. Evidence, with 3.8σ significance, for B(s)(0)→D¯(0)K(+)K(-) decays is also presented. The relative branching fraction is measured to be B(B(s)(0)→D¯(0)K(+)K(-))/B(B(0)→D¯(0)K(+)K(-))=0.90±0.27±0.20. These channels are of interest to study the mechanisms behind hadronic B decays, and open new possibilities for CP violation analyses with larger data sets.
Published: 2012

50. Measurement of the ratio of branching fractions B(B-0 -> K*(0)gamma)/B(B-s(0) -> phi gamma)

Author: Aaij, R., Beteta, C. A., Adeva, B., Adinolfi, M., Adrover, C., Affolder, A., Ajaltouni, Z., Albrecht, J., Alessio, F., Alexander, M., Alkhazov, G., Cartelle, P. A., Alves, A. A., Amato, S., Amhis, Y., Anderson, J., Appleby, R. B., Gutierrez, O. A., Archilli, F., Arrabito, L., Artamonov, A., Artuso, M., Aslanides, E., Auriemma, G., Bachmann, S., Back, J. J., Bailey, D. S., Balagura, V., Baldini, W., Barlow, R. J., Barschel, C., Barsuk, S., Barter, W., Bates, A., Bauer, C., Bauer, T., Bay, A., Bediaga, I., Belogurov, S., Belous, K., Belyaev, I., Ben Haim, E., Benayoun, M., Bencivenni, G., Benson, S., Benton, J., Bernet, R., Bettler, M. O., Beuzekom, M. v., Bien, A., Bifani, S., Bird, T., Bizzeti, A., Bjornstad, P. M., Blake, T., Blanc, F., Blanks, C., Blouw, J., Blusk, S., Bobrov, A., Bocci, V., Bondar, A., Bondar, N., Bonivento, W., Borghi, S., Borgia, A., T. J. V., Bozzi, C., Brambach, T., Den, J. v., Bressieux, J., Brett, D., Britsch, M., Britton, T., Brook, N. H., Brown, H., Buechler Germann, A., Burducea, I., Bursche, A., Buytaert, J., Cadeddu, S., Callot, O., Calvi, M., Gomez, M. C., Camboni, A., Campana, P., Carbone, A., Carboni, G., Cardinale, Roberta, Cardini, A., Carson, L., Akiba, K. C., Casse, G., Cattaneo, M., Cauet, C., Charles, M., Charpentier, P., Chiapolini, N., Ciba, K., Vidal, X. C., Ciezarek, G., P. E. L., Clemencic, M., Cliff, H. V., Closier, J., Coca, C., Coco, V., Cogan, J., Collins, P., Comerma Montells, A., Constantin, F., Contu, A., Cook, A., Coombes, M., Corti, G., Couturier, B., Cowan, G. A., Currie, R., D'Ambrosio, C., David, P., P. N. Y., Bonis, I. D., Bruyn, K. D., Capua, S. D., Cian, M. D., Lorenzi, F. D., J. M., De, Paula, L. D., Simone, P. D., Decamp, D., Deckenhoff, M., Degaudenzi, H., Buono, L. D., Deplano, C., Derkach, D., Deschamps, O., Dettori, F., Dickens, J., Dijkstra, H., Batista, P. D., Bonal, F. D., Donleavy, S., Dordei, F., Suarez, A. D., Dossett, D., Dovbnya, A., Dupertuis, F., Dzhelyadin, R., Dziurda, A., Easo, S., Egede, U., Egorychev, V., Eidelman, S., Eijk, D. v., Eisele, F., Eisenhardt, S., Ekelhof, R., Eklund, L., Elsasser, C., Elsby, D., Pereira, D. E., Falabella, A., Fanchini, E., Faerber, C., Fardell, G., Farinelli, C., Farry, S., Fave, V., Albor, V. F., Ferro Luzzi, M., Filippov, S., Fitzpatrick, C., Fontana, M., Fontanelli, Flavio, Forty, R., Francisco, O., Frank, M., Frei, C., Frosini, M., Furcas, S., Torreira, A. G., Galli, D., Gandelman, M., Gandini, P., Gao, Y., Garnier, J. C., Garofoli, J., Tico, J. G., Garrido, L., Gascon, D., Gaspar, C., Gauld, R., Gauvin, N., Gersabeck, M., Gershon, T., Ghez, P., Gibson, V., Gligorov, V. V., Goebel, C., Golubkov, D., Golutvin, A., Gomes, A., Gordon, H., Gandara, M. G., Diaz, R. G., Granado, L. A., Grauges, E., Graziani, G., Grecu, A., Greening, E., Gregson, S., Gui, B., Gushchin, E., Guz, Y., Gys, T., Hadjivasiliou, C., Haefeli, G., Haen, C., Haines, S. 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J, Seyfert, P, Shapkin, M, Shapoval, I, Shatalov, P, Shcheglov, Y, Shears, T, Shekhtman, L, Shevchenko, O, Shevchenko, V, Shires, A, Coutinho, R, Skwarnicki, T, Smith, N, Smith, E, Sobczak, K, Soler, F, Solomin, A, Soomro, F, De Paula, B, Spaan, B, Sparkes, A, Spradlin, P, Stagni, F, Stahl, S, Steinkamp, O, Stoica, S, Stone, S, Storaci, B, Straticiuc, M, Straumann, U, Subbiah, V, Swientek, S, Szczekowski, M, Szczypka, P, Szumlak, T, T'Jampens, S, Teodorescu, E, Teubert, F, Thomas, C, Thomas, E, van Tilburg, J, Tisserand, V, Tobin, M, Tolk, S, Topp Joergensen, S, Torr, N, Tournefier, E, Tourneur, S, Tran, M, Tsaregorodtsev, A, Tuning, N, Garcia, M, Ukleja, A, Urquijo, P, Uwer, U, Vagnoni, V, Valenti, G, Gomez, R, Regueiro, P, Vecchi, S, Velthuis, J, Veltri, M, Viaud, B, Videau, I, Vieira, D, Vilasis Cardona, X, Visniakov, J, Vollhardt, A, Volyanskyy, D, Voong, D, Vorobyev, A, Voss, H, Wandernoth, S, Wang, J, Ward, D, Watson, N, Webber, A, Websdale, D, Whitehead, M, Wiedner, D, Wiggers, L, Wilkinson, G, Williams, M, Wilson, F, Wishahi, J, Witek, M, Witzeling, W, Wotton, S, Wyllie, K, Xie, Y, Xing, F, Xing, Z, Yang, Z, Young, R, Yushchenko, O, Zangoli, M, Zavertyaev, M, Zhang, F, Zhang, L, Zhang, W, Zhang, Y, Zhelezov, A, Zhong, L, and Zvyagin, A
Subjects: rare decay, FIS/01 - FISICA SPERIMENTALE, branching fraction, flavor physics, Decays, B physics, FIS/04 - FISICA NUCLEARE E SUBNUCLEARE, experimental results
Abstract: The ratio of branching fractions of the radiative B decays B-0 -> K*(0)gamma and B(0)s -> phi gamma has been measured using 0.37 fb(-1) of pp collisions at a center of mass energy of root s = 7 TeV, collected by the LHCb experiment. The value obtained is B(B-0 -> K*(0)gamma)/B(B(0)s ->phi gamma) = 1.12 +/- 0.08(-0.04-0.08)(+0.06+0 .09), where the first uncertainty is statistical, the second systematic, and the third is associated with the ratio of fragmentation fractions f(s)/f(d). Using the world average for B(B-0 -> K*(0)gamma) = (4.33 +/- 0.15) x 10(-5), the branching fraction B(B(0)s -> phi gamma) is measured to be (3.9 +/- 0.5) x 10(-5), which is the most precise measurement to date.
Published: 2012

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