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4 results on '"DiLodovico F"'

1. T2K measurements of muon neutrino and antineutrino disappearance using $3.13\times 10^{21}$ protons on target

Author

Abe, K., Akhlaq, N., Akutsu, R., Ali, A., Alt, C., Andreopoulos, C., Antonova, M., Aoki, S., Arihara, T., Asada, Y., Ashida, Y., Atkin, E. T., Awataguchi, Y., Barker, G. J., Barr, G., Barrow, D., Batkiewicz-Kwasniak, M., Beloshapkin, A., Bench, F., Berardi, V., Berns, L., Bhadra, S., Bolognesi, S., Bonus, T., Bourguille, B., Boyd, S. B., Bravar, A., BravoBerguno, D., Bronner, C., Bron, S., Bubak, A., BuizzaAvanzini, M., Cao, S., Cartwright, S. L., Catanesi, M. G., Cervera, A., Cherdack, D., Christodoulou, G., Cicerchia, M., Coleman, J., Collazuol, G., Cook, L., Coplowe, D., Cudd, A., DeRosa, G., Dealtry, T., Delogu, C. C., Dennis, S. R., Densham, C., DiLodovico, F., Dolan, S., Doyle, T. A., Dumarchez, J., Dunne, P., Eguchi, A., Eklund, L., Emery-Schrenk, S., Ereditato, A., Finch, A. J., Fiorentini, G. A., Francois, C., Friend, M., Fujii, Y., Fukuda, R., Fukuda, Y., Fusshoeller, K., Giganti, C., Gonin, M., Gorin, A., Guigue, M., Hadley, D. R., Hamacher-Baumann, P., Hartz, M., Hasegawa, T., Hassani, S., Hastings, N. C., Hayato, Y., Hiramoto, A., Hogan, M., Holeczek, J., HongVan, N. T., Honjo, T., Iacob, F., Ichikawa, A. K., Ikeda, M., Ishida, T., Ishitsuka, M., Iwamoto, K., Izmaylov, A., Izumi, N., Jakkapu, M., Jamieson, B., Jenkins, S. J., Jesus-Valls, C., Jonsson, P., Junjie, X., Jurj, P. B., Kabirnezhad, M., Kakuno, H., Kameda, J., Abe, S. P. K., Blondel, A., Berguño, D. Bravo, Avanzini, M. Buizza, De Rosa, G., Dergacheva, A., Di Lodovico, F., Harris, D. A., Van, N. T. Hong, Jesús-Valls, C., Jung, C. K., Kasetti, S. P., Kataoka, Y., Katayama, Y., Katori, T., Kearns, E., Khabibullin, M., Khotjantsev, A., Kikawa, T., Kikutani, H., King, S., Kisiel, J., Kobata, T., Kobayashi, T., Koch, L., Konaka, A., Kormos, L. L., Koshio, Y., Kostin, A., Kowalik, K., Kudenko, Y., Kuribayashi, S., Kurjata, R., Kutter, T., Kuze, M., Labarga, L., Lagoda, J., Lamoureux, M., Last, D., Laveder, M., Lawe, M., Litchfield, R. P., Liu, S. L., Longhin, A., Ludovici, L., Lu, X., Lux, T., Machado, L. N., Magaletti, L., Mahn, K., Malek, M., Manly, S., Maret, L., Marino, A. D., Marti-Magro, L., Maruyama, T., Matsubara, T., Matsushita, K., Mauger, C., Mavrokoridis, K., Mazzucato, E., McCauley, N., McElwee, J., McFarland, K. S., McGrew, C., Mefodiev, A., Mezzetto, M., Minamino, A., Mineev, O., Mine, S., Miura, M., Bueno, L. Molina, Moriyama, S., Mueller, Th. A., Munteanu, L., Nagai, Y., Nakadaira, T., Nakahata, M., Nakajima, Y., Nakamura, A., Nakamura, K., Nakano, Y., Nakayama, S., Nakaya, T., Nakayoshi, K., Naseby, C. E. R., Ngoc, T. V., Nguyen, V. Q., Niewczas, K., Nishimura, Y., Noah, E., Nonnenmacher, T. S., Nova, F., Nowak, J., Nugent, J. C., O'Keeffe, H. M., O'Sullivan, L., Odagawa, T., Ogawa, T., Okada, R., Okumura, K., Okusawa, T., Owen, R. A., Oyama, Y., Palladino, V., Paolone, V., Pari, M., Parker, W. C., Parsa, S., Pasternak, J., Pavin, M., Payne, D., Penn, G. C., Pickering, L., Pidcott, C., Pintaudi, G., Pistillo, C., Popov, B., Porwit, K., Posiadala-Zezula, M., Pritchard, A., Quilain, B., Radermacher, T., Radicioni, E., Radics, B., Ratoff, P. N., Riccio, C., Rondio, E., Roth, S., Rubbia, A., Ruggeri, A. C., Ruggles, C., Rychter, A., Sakashita, K., Sánchez, F., Santucci, G., Schloesser, C. M., Scholberg, K., Scott, M., Seiya, Y., Sekiguchi, T., Sekiya, H., Sgalaberna, D., Shaikhiev, A., Shaykina, A., Shiozawa, M., Shorrock, W., Shvartsman, A., Skwarczynski, K., Smy, M., Sobczyk, J. T., Sobel, H., Soler, F. J. P., Sonoda, Y., Spina, R., Suvorov, S., Suzuki, A., Suzuki, S. Y., Suzuki, Y., Sztuc, A. A., Tada, M., Tajima, M., Takeda, A., Takeuchi, Y., Tanaka, H. K., Tanihara, Y., Tani, M., Teshima, N., Thompson, L. F., Toki, W., Touramanis, C., Towstego, T., Tsui, K. M., Tsukamoto, T., Tzanov, M., Uchida, Y., Vagins, M., Valder, S., Vargas, D., Vasseur, G., Vilela, C., Vinning, W. G. S., Vladisavljevic, T., Wachala, T., Walker, J., Walsh, J. G., Wang, Y., Wark, D., Wascko, M. O., Weber, A., Wendell, R., Wilking, M. J., Wilkinson, C., Wilson, J. R., Wood, K., Wret, C., Xia, J., Yamamoto, K., Yanagisawa, C., Yang, G., Yano, T., Yasutome, K., Yershov, N., Yokoyama, M., Yoshida, T., Yoshimoto, Y., Yu, M., Zalewska, A., Zalipska, J., Zaremba, K., Zarnecki, G., Ziembicki, M., Zito, M., and Zsoldos, S.

Subjects
High Energy Physics - Experiment
Abstract

We report measurements by the T2K experiment of the parameters $\theta_{23}$ and $\Delta m^2_{32}$ which govern the disappearance of muon neutrinos and antineutrinos in the three-flavor PMNS neutrino oscillation model at T2K's neutrino energy and propagation distance. Utilizing the ability of the experiment to run with either a mainly neutrino or a mainly antineutrino beam, muon-like events from each beam mode are used to measure these parameters separately for neutrino and antineutrino oscillations. Data taken from $1.49 \times 10^{21}$ protons on target (POT) in neutrino mode and $1.64 \times 10^{21}$ POT in antineutrino mode are used. The best-fit values obtained by T2K were $\sin^2\left(\theta_{23}\right)=0.51^{+0.06}_{-0.07} \left(0.43^{+0.21}_{-0.05}\right)$ and $\Delta m^2_{32}=2.47^{+0.08}_{-0.09} \left(2.50^{+0.18}_{-0.13}\right)$\evmass for neutrinos (antineutrinos). No significant differences between the values of the parameters describing the disappearance of muon neutrinos and antineutrinos were observed. An analysis using an effective two-flavor neutrino oscillation model where the sine of the mixing angle is allowed to take non-physical values larger than 1 is also performed to check the consistency of our data with the three-flavor model. Our data were found to be consistent with a physical value for the mixing angle.

Published
2020
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2. Search for Electron Antineutrino Appearance in a Long-baseline Muon Antineutrino Beam

Author

Abe, K., Akutsu, R., Ali, A., Alt, C., Andreopoulos, C., Anthony, L., Antonova, M., Aoki, S., Ariga, A., Asada, Y., Ashida, Y., Atkin, E. T., Awataguchi, Y., Ban, S., Barbi, M., Barker, G. J., Barr, G., Barrow, D., Barry, C., Batkiewicz-Kwasniak, M., Beloshapkin, A., Bench, F., Berardi, V., Berkman, S., Berns, L., Bhadra, S., Bienstock, S., Blondel, A., Bolognesi, S., Bourguille, B., Boyd, S. B., Brailsford, D., Bravar, A., Berguno, D. Bravo, Bronner, C., Bubak, A., Avanzini, M. Buizza, Calcutt, J., Campbell, T., Cao, S., Cartwright, S. L., Catanesi, M. G., Cervera, A., Chappell, A., Checchia, C., Cherdack, D., Chikuma, N., Christodoulou, G., Coleman, J., Collazuol, G., Cook, L., Coplowe, D., Cudd, A., Dabrowska, A., DeRosa, G., Dealtry, T., Denner, P. F., Dennis, S. R., Densham, C., DiLodovico, F., Dokania, N., Dolan, S., Doyle, T. A., Drapier, O., Dumarchez, J., Dunne, P., Eklund, L., Emery-Schrenk, S., Ereditato, A., Fernandez, P., Feusels, T., Finch, A. J., Fiorentini, G. A., Fiorillo, G., Francois, C., Friend, M., Fujii, Y., Fujita, R., Fukuda, D., Fukuda, R., Fukuda, Y., Fusshoeller, K., Gameil, K., Giganti, C., Golan, T., Gonin, M., Gorin, A., Guigue, M., Hadley, D. R., Haigh, J. T., Hamacher-Baumann, P., Hartz, M., Hasegawa, T., Hastings, N. C., Hayashino, T., Hayato, Y., Hiramoto, A., Hogan, M., Holeczek, J., HongVan, N. T., Iacob, F., Ichikawa, A. K., Ikeda, M., Ishida, T., Ishii, T., Ishitsuka, M., Iwamoto, K., Izmaylov, A., Jakkapu, M., Jamieson, B., Jenkins, S. J., Jesus-Valls, C., Jiang, M., Johnson, S., Jonsson, P., Jung, C. K., Kabirnezhad, M., Kaboth, A. C., Kajita, T., Kakuno, H., Kameda, J., Karlen, D., Kasetti, S. P., Kataoka, Y., Katori, T., Kato, Y., Kearns, E., Khabibullin, M., Khotjantsev, A., Kikawa, T., Kim, H., Kim, J., King, S., Kisiel, J., Knight, A., Knox, A., Kobayashi, T., Koch, L., Koga, T., Konaka, A., Kormos, L. L., Koshio, Y., Kostin, A., Kowalik, K., Kubo, H., Kudenko, Y., Kukita, N., Kuribayashi, S., Kurjata, R., Kutter, T., Kuze, M., Labarga, L., Lagoda, J., Lamoureux, M., Laveder, M., Lawe, M., Licciardi, M., Lindner, T., Litchfield, R. P., Liu, S. L., Li, X., Longhin, A., Ludovici, L., Lu, X., Lux, T., Machado, L. N., Magaletti, L., Mahn, K., Malek, M., Manly, S., Maret, L., Marino, A. D., Marti-Magro, L., Martin, J. F., Maruyama, T., Matsubara, T., Matsushita, K., Matveev, V., Mavrokoridis, K., Mazzucato, E., McCarthy, M., McCauley, N., McFarland, K. S., McGrew, C., Mefodiev, A., Metelko, C., Mezzetto, M., Minamino, A., Mineev, O., Mine, S., Miura, M., Bueno, L. Molina, Moriyama, S., Morrison, J., Mueller, Th. A., Munteanu, L., Murphy, S., Nagai, Y., Nakadaira, T., Nakahata, M., Nakajima, Y., Nakamura, A., Nakamura, K. G., Nakamura, K., Nakayama, S., Nakaya, T., Nakayoshi, K., Nantais, C., Ngoc, T. V., Niewczas, K., Nishikawa, K., Nishimura, Y., Nonnenmacher, T. S., Nova, F., Novella, P., Nowak, J., Nugent, J. C., O'Keeffe, H. M., O'Sullivan, L., Odagawa, T., Okumura, K., Okusawa, T., Oser, S. M., Owen, R. A., Oyama, Y., Palladino, V., Palomino, J. L., Paolone, V., Parker, W. C., Pasternak, J., Paudyal, P., Pavin, M., Payne, D., Penn, G. C., Pickering, L., Pidcott, C., Pintaudi, G., PinzonGuerra, E. S., Pistillo, C., Popov, B., Porwit, K., Posiadala-Zezula, M., Pritchard, A., Quilain, B., Radermacher, T., Radicioni, E., Radics, B., Ratoff, P. N., Reinherz-Aronis, E., Riccio, C., Rondio, E., Roth, S., Rubbia, A., Ruggeri, A. C., Ruggles, C. A., Rychter, A., Sakashita, K., Sanchez, F., Schloesser, C. M., Scholberg, K., Schwehr, J., Scott, M., Seiya, Y., Sekiguchi, T., Sekiya, H., Sgalaberna, D., Shah, R., Shaikhiev, A., Shaker, F., Shaykina, A., Shiozawa, M., Shorrock, W., Shvartsman, A., Smirnov, A., Smy, M., Sobczyk, J. T., Sobel, H., Soler, F. J. P., Sonoda, Y., Steinmann, J., Suvorov, S., Suzuki, A., Suzuki, S. Y., Suzuki, Y., Sztuc, A. A., Tada, M., Tajima, M., Takeda, A., Takeuchi, Y., Tanaka, H. K., Tanaka, H. A., Tanaka, S., Thompson, L. F., Toki, W., Touramanis, C., Towstego, T., Tsui, K. M., Tsukamoto, T., Tzanov, M., Uchida, Y., Uno, W., Vagins, M., Valder, S., Vallari, Z., Vargas, D., Vasseur, G., Vilela, C., Vinning, W. G. S., Vladisavljevic, T., Volkov, V. V., Wachala, T., Walker, J., Walsh, J. G., Wang, Y., Wark, D., Wascko, M. O., Weber, A., Wendell, R., Wilking, M. J., Wilkinson, C., Wilson, J. R., Wilson, R. J., Wood, K., Wret, C., Yamada, Y., Yamamoto, K., Yanagisawa, C., Yang, G., Yano, T., Yasutome, K., Yen, S., Yershov, N., Yokoyama, M., Yoshida, T., Yu, M., Zalewska, A., Zalipska, J., Zaremba, K., Zarnecki, G., Ziembicki, M., Zimmerman, E. D., Zito, M., Zsoldos, S., and Zykova, A.

Subjects
High Energy Physics - Experiment
Abstract

Electron antineutrino appearance is measured by the T2K experiment in an accelerator-produced antineutrino beam, using additional neutrino beam operation to constrain parameters of the PMNS mixing matrix. T2K observes 15 candidate electron antineutrino events with a background expectation of 9.3 events. Including information from the kinematic distribution of observed events, the hypothesis of no electron antineutrino appearance is disfavored with a significance of 2.40{\sigma} and no discrepancy between data and PMNS predictions is found. A complementary analysis that introduces an additional free parameter which allows non-PMNS values of electron neutrino and antineutrino appearance also finds no discrepancy between data and PMNS predictions., Comment: arXiv admin note: text overlap with arXiv:1910.09439

Published
2019
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3. Measurement of the lifetime of tau-lepton

Author

U. Mjoernmark, Edoardo Castelli, F. Pierre, P. Allen, G. W. Van Apeldoorn, R. J. Apsimon, L. Ventura, V. Ruhlmann, Roland Horisberger, L. Bugge, D. Z. Toet, G. Hamel de Monchenault, Andrey Korytov, G. Ekspong, Itzhak Roditi, Gueorgui Chelkov, Pierre Juillot, M. De Beer, M. Bonesini, Y. Sacquin, Josef Strauss, M.A. Lopez Aguera, Francesca Romana Cavallo, Hans Muller, B. Koene, J.A.M.A. Buytaert, W. Venus, L. Di Ciaccio, Jan Krolikowski, N. N. Khovanski, Mitchell Wayne, M. S. Bilenky, G. Tristam, L.J. Carroll, W. Bartl, R. Pain, P. N. Bogolubov, M. J. Bates, J. A. Valls Ferrer, Giovanni Darbo, Christine Kourkoumelis, P. Siegrist, V. V. Lapin, N. Crosland, S. Simonetti, M. Begalli, E. Dahl-Jensen, Paolo Morettini, J. G. Loken, C. De Clercq, Klaus Hamacher, J. P. Laugier, Natale Demaria, R. Lucock, M. Richardson, G. Meola, Toralf Bernhard Skaali, M. Boratav, D. Gamba, P. Beilliere, M. Battaglia, T. Bolognese, W. J. Murray, R. Strub, J-C. Marin, Spyros Tzamarias, G. Cosme, A. Perrotta, G. Borisov, George Kalkanis, P. B. Renton, G. Voulgaris, M. Pimenta, B. A. Khomenko, M. Baubillier, V. Canale, S. Gumenyuk, R. A. Brenner, Stavros Maltezos, M. Bonapart, O. Barring, Y. Dufour, P. D. Dauncey, Sandor Czellar, D. C. Fries, Patrick Jarry, S. J. Alvsvaag, C. Vander Velde, N. De Groot, G. Rinaudo, G. Sette, A. Elliot Peisert, A. Stocchi, Francesco Navarria, J. Zúñiga, P. Astier, W. Bonivento, P. Weilhammer, A. M. Zaitsev, Alexander Vodopyanov, F. Bianchi, G. Vegni, N. Brummer, J. Bjarne, P. O. Hulth, T. Tabarelli, P. Van Dam, M. Davenport, G. Polok, A. Ruiz, Winfried Mitaroff, E. Lieb, P. Antilogus, C. Lambropoulos, Ugo Amaldi, W. De Boer, E. Zevgolatakos, G. Matthiae, Marta Calvi, P. Delpierre, I. Herbst, M. Matveev, R. Mc Nulty, I. Lippi, W. Kucewicz, E. K. Johansson, J. Pyyhtia, Geoffrey Smith, D. Johnson, Louis Lyons, W. Klempt, Renato Turchetta, H. De Boeck, S. Tavernier, G. Wormser, E. Daubie, G. E. Theodosiou, Mogens Dam, D. Fassouliotis, Ariella Cattai, F. Couchot, M. Kopf, M. Tyndel, S. C. Blyth, O. Pingot, G. Wilkinson, M.D.M. De Fez Laso, Juan Fuster, Jacques Lemonne, J. Sanchez, C. Bosio, E.N. Tsyganov, J. H. Wickens, Jose Luis Contreras, T. Kreuzberger, J. Derkaoui, S. Braibant, S. Dagoret, F. Stichelbaut, D. Zavrtanik, A. Tilquin, S. O. Holmgren, L. S. Vertogradov, J. Maillard, M. T. Trainor, P. Vaz, R. Sosnowski, O. Ullaland, Leif J. Jönsson, G. Myatt, F. Adami, V. G. Timofeev, A. G. Frodesen, Pawel Jalocha, Barry King, G. Smadja, L. Mathis, D. Husson, Ugo Gasparini, A. Pullia, J.M. Gago, D. Bertrand, J. Timmermans, I. A. Tyapkin, B.D. Hyams, T. S. Spassoff, Torsten Paul Ake Åkesson, Demetrios Loukas, R. Keranen, Philippe Charpentier, Francisco Matorras, N. Yamdagni, U. Trevisan, H. Furstenau, R. Frühwirth, L. O. Eek, R. C. Shellard, Josef Hrubec, A. M. Segar, A. G. Olshevski, B. Boštjančič, V. Perevozchikov, Theodora Papadopoulou, B. Korzen, Jon Christopher Wikne, C. Defoix, E. I. Rosenberg, A. Campion, S. Volponi, B. Dalmagne, F. Fulda-Quenzer, H. P. Borner, Stefan Schael, A. Lipniacka, Paul Baillon, Alexander Lincoln Read, M. Szeptycka, Tiziano Camporesi, A.J. Camacho Rozas, Abdenour Lounis, M.-H. Gros, Laurent Chevalier, M. Fernandez Alonso, D. Radojicic, V. Obraztsov, Jan Ridky, P. Folegati, Z. Hajduk, K. Kurvinen, Maciej Górski, W. Ruckstuhl, Borge Svane Nielsen, J. J. Lozano, Guido Barbiellini, R. Zukanovich Funchal, B. Franek, H. Wahlen, Ariel Goobar, E. Graziani, P. S. Iversen, F. Fontanelli, Maria Roberta Monge, A. Zalewska, Krzysztof Doroba, N. G. Redaelli, R. Moeller, A. Hakansson, Chiara Meroni, J. H. Koehne, Marco Bozzo, T. Hofmokl, Marek Szczekowski, J. M. Brunet, H. Foeth, Roberto Cirio, I. Roncagliolo, L. K. Resvanis, J. E. Hooper, J. Guy, P. Lutz, W. Krupinski, W. T. Meyer, P. V. Chliapnikov, Tord Ekelof, H. Staeck, D. Benedic, P. Abreu, P. Borgeaud, J. P. Gerber, Tim Adye, E. Rosso, H. Klein, P. Beltran, Peter Kluit, F. Naraghi, P. Frenkiel, K. H. Becks, E. Vallazza, Milos Lokajicek, J. Cuevas Maestro, A. Chan, B. Ueberschaer, Massimo Caccia, H. J. Hilke, D. J. Holthuizen, F. Waldner, S. Haider, Antonio Ferrer, Tuure Tuuva, F. Simonetto, F. Kapusta, K. W. Glitza, Clara Troncon, G. Leder, B. Åsman, W.S.C. Williams, J.-E. Augustin, F. Ledroit, E.N. Gazos, M. Schaeffer, B. Loerstad, Eilam Gross, B. Nijjhar, E. Menichetti, Stefano Ragazzi, K. Furnival, C. Walck, A. De Angelis, P. Collins, D. Delikaris, Vladimir Nikolaenko, C. Caso, J. Drees, Fernand Grard, A. Passeri, D. Crennell, F. Mandl, T. Todorov, H. Burmeister, N. van Eijndhoven, J. Werner, L. Tortora, F. J. Harris, C. De La Vaissiere, C. J. Beeston, Daniel Bloch, F. Cao, Ahmimed Ouraou, Wolfgang Adam, M. L. Turluer, B. W. Heck, M. Mazzucato, P. Szymanski, Robert S. Brown, V.M. Golovatyuk, Carlos Lacasta, K. D. Brand, N. I. Zimin, Krzysztof A. Rybicki, H. B. Crawley, D. Isenhower, A. Pinsent, D. Wormald, K. Woschnagg, A. De Min, Joao Varela, V. Falaleev, M. Dracos, J. J. Gomez Y Cadenas, V. Chorowicz, D. Reid, Yu. Belokopytov, S. Squarcia, Matteo Pegoraro, E. C. Katsoufis, G. Gopal, E. G. Anassontzis, R. Holmes, H. Saarikko, M. Voutilainen, G. Grosdidier, W. Dulinski, K. A. J. Forbes, S. D. Hodgson, S. Ueberschaer, G. Galeazzi, J. P. Engel, P. Bambade, K. Moenig, M. V. Castillo Gimenez, E. J. Sanchez, M. Crozon, T. Buran, Gianni Zumerle, P. Roudeau, Alessandra Romero, J. Kesteman, A. Maltezos, G. Damgaard, F. Verbeure, C. Bricman, M. A E Schyns, Martino Margoni, P. F. Honore, E. Fokitis, G. D. Alekseev, Olga Botner, M. Michelotto, V. Gracco, Pavlos Ioannou, Krzysztof Korcyl, A. N. Sissakian, R. Llosa, Claudia J. Stubenrauch, Carmen García, B. Jean-Marie, Mario Sannino, Eleuterio Spiriti, P. Poropat, Andromachi Tsirou, M. A. Houlden, M. Mc Cubbin, K. Hultqvist, Georgios Stavropoulos, P. David, Andre Augustinus, W. K. Van Doninck, F. Richard, W.-D. Apel, C. Matteuzzi, M. Hahn, D. Vilanova, S. Almehed, F. Hahn, S. Marti, U. Kruener-Marquis, Paolo Ronchese, N. J. Kjaer, Paula Eerola, Lucio Cerrito, M. A. Winter, G. E. Kalmus, H. Palka, G. Skjevling, J. W. Lamsa, F. Barao, T. Henkes, B. De Lotto, G. Crosetti, Evgueni Vlasov, E. Higon, R. Seufert, H. Herr, F. Scuri, A. M. Wetherell, L. G. Tkatchev, Jmv Garcia, L. Lanceri, A. Firestone, M. Vollmer, U. Rossi, Paolo Giacomelli, R. Sekulin, S. Delorme, M. Zito, J. J. Hernandez, T. Moa, G. Maehlum, B. Grossetete, Allan Hallgren, Giovanni Valenti, Antonio Baroncelli, Guenakh Mitselmakher, Fares Djama, José Salt, L. Vibert, M. Jonker, William Trischuk, A. Markou, Cristian Stanescu, P. Branchini, H. Schneider, R. Lauhakangas, Tiziano Rovelli, Mikael Berggren, G. Kantardjian, M. Sessa, M. Los, V. Lepeltier, M. Donszelmann, H. Forsbach, C. Ronnqvist, Paolo Checchia, G. Zhang, A. P. Ostankov, Ph. Gavillet, R. Gokieli, Dietrich Liko, P. Privitera, V. Kostukhin, R. Zitoun, M. Turala, Luc Pape, P. Herquet, R. Contri, Piotr Zalewski, U. Nau-Korzen, Manolis Dris, E. Lillethun, V.A. Uvarov, Daniel Treille, J. N. Jackson, P. Kokkinias, J. Lindgren, Nikita Smirnov, F. Carena, Pierre Billoir, M. Pernicka, I. Hietanen, Jose M. Benlloch, A. Grant, Vaclav Vrba, Hans Dijkstra, G. Lenzen, J. E. Campagne, M. Koratzinos, P. Negri, J.H. Bibby, Göran Jarlskog, A. Letessier-Selvon, J. Dolbeau, P.S.L. Booth, P. N. Ratoff, A. Lopez-Fernandez, J. Marco, M. P. Clara, Maria Elena Pol, S. Katsanevas, D. Y. Bardin, T. A. Filippas, M. Regler, P. Yepes, H. Mueller, C. O. Higgins, B. Bouquet, R. Orava, A. Klovning, 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), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), CMS, Institut de Physique des 2 Infinis de Lyon (IP2I Lyon), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), L3, Acciarri, M., Achard, P., Adriani, O., Aguilar Benitez, M., Alcaraz, J., Alemanni, G., Allaby, J., Aloisio, Alberto, Alviggi, Mariagrazia, Ambrosi, G., Anderhub, H., Andreev, V. 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Subjects
COLLISIONS, Nuclear and High Energy Physics, Particle physics, LUND MONTE-CARLO, PAIR PRODUCTION, Electron–positron annihilation, FOS: Physical sciences, Elementary particle, ddc:500.2, 01 natural sciences, 7. Clean energy, Resonance (particle physics), JET FRAGMENTATION, DECAYS, High Energy Physics - Experiment, Nuclear physics, Particle decay, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], SILICON MICROVERTEX DETECTOR, PRECISE MEASUREMENT, Limit (mathematics), QCD ANALYSIS, 010306 general physics, L3 EXPERIMENT, Coupling constant, Physics, Muon, Annihilation, TEST BEAM, E+E-PHYSICS, 010308 nuclear & particles physics, ALPHA(S), High Energy Physics::Phenomenology, Detector, Pair production, SPECTRAL FUNCTIONS, ComputingMethodologies_DOCUMENTANDTEXTPROCESSING, High Energy Physics::Experiment, Particle Physics - Experiment, Lepton
Abstract

The tau lepton lifetime is measured with the L3 detector at LEP using the complete data taken at centre-of-mass energies around the Z pole resulting in tau_tau = 293.2 +/- 2.0 (stat) +/- 1.5 (syst) fs. The comparison of this result with the muon lifetime supports lepton universality of the weak charged current at the level of six per mille. Assuming lepton universality, the value of the strong coupling constant, alpha_s is found to be alpha_s(m_tau^2) = 0.319 +/- 0.015(exp.) +/- 0.014 (theory). The tau lepton lifetime is measured with the L3 detector at LEP using the complete data taken at centre-of-mass energies around the Z pole resulting in τ τ =293.2 ± 2.0 (stat) ± 1.5 (syst) fs . The comparison of this result with the muon lifetime supports lepton universality of the weak charged current at the level of six per mille. Assuming lepton universality, the value of the strong coupling constant, α s is found to be α s ( m τ 2 ) = 0.319 ± 0.015 (exp) ± 0.014 (theory). The tau lepton lifetime is measured with the L3 detector at LEP using the complete data taken at centre-of-mass energies around the Z pole resulting in tau_tau = 293.2 +/- 2.0 (stat) +/- 1.5 (syst) fs. The comparison of this result with the muon lifetime supports lepton universality of the weak charged current at the level of six per mille. Assuming lepton universality, the value of the strong coupling constant, alpha_s is found to be alpha_s(m_tau^2) = 0.319 +/- 0.015(exp.) +/- 0.014 (theory).

Published
2015
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4. SEARCH FOR NEUTRAL CHARMLESS B-DECAYS AT LEP

Author

S. Easo, Kati Lassila-Perini, D.W. Schmitz, G. Pascale, V. Plyaskin, Samuel C.C. Ting, J. Y. Zeng, N. Shivarov, Claudio Luci, M. Rescigno, M. T. Dova, G. Passaleva, M. W. Gruenewald, I. Josa-Mutuberria, J. Rodin, Robert Clare, W. G. Ma, Thomas Hebbeker, Paul Lecoq, R. W. Kraemer, M. Napolitano, M. T. Choi, Francesca Nessi-Tedaldi, F. C. Erné, P. Schmitz, Alexei Klimentov, S. Petrak, H. S. Chen, B. Lindemann, J. D. Burger, G. Rahal-Callot, H. El Mamouni, S. Pensotti, Valery Schegelsky, Antonino Zichichi, Alessandra Doria, Tariq Aziz, N. Scholz, S. R. Hou, M. Wadhwa, D. J. Schotanus, H. O. Cohn, Marcella Diemoz, M. Vivargent, L. Servoli, Igor Vorobiev, K. Freudenreich, C. Maña, I. C. Brock, T. Angelescu, E. Lieb, J. Casaus, Yu. Kamyshkov, Helmut Vogel, S. Mele, Kajari Mazumdar, Dai-Sik Kim, F. Di Lodovico, H. Rykaczewski, Giovanni Organtini, G. M. Bilei, A. Arefiev, Yu. Efremenko, Aa Vorobyov, A. Tsaregorodtsey, P. Bartalini, P. Levtchenko, Panos A Razis, F. Ferroni, P. Laurikainen, S. Müller, B. L. Betev, A. Lebedev, Dong-Chul Son, T. Kramer, R. Barillère, E. Brambilla, E. Valente, D. McNally, O. Toker, Y. Zeng, C. G. Yang, Xd Cai, J. J. Blaising, Stefano Giagu, K. Riles, G. Viertel, R. Fabbretti, C. Lapoint, S. Morganti, Y. Karyotakis, J. Berdugo, F. Marzano, Z. A. Liu, X. Y. Yao, Luca Lista, Mariagrazia Alviggi, G. Coignet, W. Krenz, M. Möller, J. G. Xu, H. F. Chen, M. Lenti, A. Buytenhuijs, Stefan Roth, G. Schwering, K. Schultze, H. Suter, G. F. Susinno, D. Goujon, Vincenzo Innocente, D. Fernandez, Juven Wang, I. Vetlitsky, J. Schwenke, S. Costantini, E. J. Sanchez, S. X. Wu, Marco Meschini, D. Kirkby, J. M. Le Goff, Crisostomo Sciacca, N. Gheordanescu, J. C. Pinto, Jasper Kirkby, J.V. Allaby, S. Patricelli, Sabine Riemann, R. Weill, F. Muheim, Roberto Battiston, Gerjan Bobbink, Dimitri Bourilkov, B. Borgia, S. S. Gau, M. Sassowsky, A. J.W. van Mil, H. De Boeck, Y. J. Pei, H. Kuijten, A. C. Weber, J. Busenitz, W. van Rossum, C. Burgos, Adrian Biland, G. 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Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Meson, 010308 nuclear & particles physics, Higgs boson, L3 experiment, Hadron, Física, large electron positron collider, MESONS, 01 natural sciences, CP-VIOLATION, TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY, 0103 physical sciences, Large Electron–Positron Collider, High Energy Physics::Experiment, Atomic physics, Nuclear Experiment, 010306 general physics, GeneralLiterature_REFERENCE(e.g.,dictionaries,encyclopedias,glossaries), Particle Physics - Experiment, Ciencias Exactas, L3 EXPERIMENT
Abstract

A search for rare charmless decays of B0d and B0s mesons has been performed in the exclusive channels B0d(s) →ηη0, B0d(s) →ηπ0 and B0d(s) →π0π0. The data sample consisted of three million hadronic Z decays collected by the L3 experiment at LEP from 1991 through 1994. No candidate event has been observed and the following upper limits at 90% confidence level on the branching ratios have been set: Br(B0d→ηη) −4, Br(B0s →ηη) < 1.5 x 10−3, Br(B0d→ηπ0) < 2.5 x 10−4, Br(B0s→ηπ0) < 1.0 x 10−3, Br(B0d→π0π0) < 6.0 x 10−5, Br(B0s→π0π0) < 2.1 x 10−4. These are the first experimental limits on Bd0→ηη and on the Bs0 neutral charmless modes., Facultad de Ciencias Exactas

Published
2016

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