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15. Clinical characteristics and outcomes of invasively ventilated patients with COVID-19 in Argentina (SATICOVID): a prospective, multicentre cohort study

Author

Estenssoro, E, Dubin, A, Loudet, C I, Ríos, F, Kanoore Edul, V S, Plotnikow, G, Reina, R, Andrian, M, Ivacachi, J, Romero, I, Garay, C, Piezny, D, Sagardía, J, Bezzi, M, Borello, S, Mandich, V, Chiacchiara, D, Groer, C, García Almirón, C, Kovac, A, Torres, S, Cesio, C, Orlandi, C, Hernández, R, Rubatto Birri, P N, Mugno, M, Valenti, M F, Gómez, R A, Cunto, E, Chediack, V, Sáenz, M G, Marchena, C, Tiribelli, N, Guaymas, M, Aphalo, V, Vázquez, D, Saad, Y, Sánchez, D, Iglesias, F, Casteluccio, P, Lattanzio, B, Eiguren, S, Noval, D, Fredes, S, Izzo, G C, Cabrera, H, Pozo, M O, Sac, S, Tornatore, N, Sakugawa, J, Villafañe, C, Di Sibio, A, Maskin, P, Rodríguez, P, Nihany, N, Mogadouro, M, Pálizas (h), F, Cornú, E, Esperatti, M, Pintos, J M, Badariotti, G, Echevarría, G, Mazzola, A M, Giuggia, C, Dargains, N, Turano, A, Pugliese, F, Zec Baskarad, M J, Chamadoira, M, Medina, J C, Búsico, M, Villarejo, F, Collazos, H, Huanca, T, Pendino, J C, Talamonti, L, Skrzypiec, F, Tascón, C, Genovese, G, Alul, H, Zavattieri, A, Herrera, A J, Rosales, N, Quintana, M G, Risso Vazquez, A, Lugaro, M, Díaz Rousseaux, E, Falcone, M, Kurban, F, Cini, M, Zakalik, G, Pellegrini, C, Fernández, G, Sottile, J P, Barrios, S, Hamada, O, Mendiluce, V, Villalba, D, Sacco, F, Mezzina, V, Servin, C, Quinteros, M, Nuñez, H, Campassi, M L, Banegas, D, Balasini, C, Leiva, V, Maicol, F, Domeniconi, G, Vilaseca, V, Barrientos, A, Larocca, F, Kumar, L, Luna, R, Deheza Lonardi, M, Oholeguy, A, Carnero Echegaray, J, Marazzi, C, Helca Regis, P, Rópolo, F, Bobadilla, A, Thomas, V, Funes Nelson, N, Villavicencio, C, Machare, P, Aramayo, N, González, C, Ferriccioni, M, Bergesio, J, Estenssoro, Elisa, Loudet, Cecilia I, Ríos, Fernando G, Kanoore Edul, Vanina S, Plotnikow, Gustavo, Andrian, Macarena, Romero, Ignacio, Piezny, Damián, Bezzi, Marco, Mandich, Verónica, Groer, Carla, Torres, Sebastián, Orlandi, Cristina, Rubatto Birri, Paolo N, Valenti, María F, Cunto, Eleonora, Sáenz, María G, Tiribelli, Norberto, Aphalo, Vanina, Reina, Rosa, and Dubin, Arnaldo

Published
2021
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22. Observation of the rare $B^0_s\to\mu^+\mu^-$ decay from the combined analysis of CMS and LHCb data

Author

CMS, The, Collaborations, LHCb, Khachatryan, V., Sirunyan, A. M., Tumasyan, A., Adam, W., Bergauer, T., Dragicevic, M., Erö, J., Friedl, M., Frühwirth, R., Ghete, V. M., Hartl, C., Hörmann, N., Hrubec, J., Jeitler, M., Kiesenhofer, W., Knünz, V., Krammer, M., Krätschmer, I., Liko, D., Mikulec, I., Rabady, D., Rahbaran, B., Rohringer, H., Schöfbeck, R., Strauss, J., Treberer-Treberspurg, W., Waltenberger, W., Wulz, C. -E., Mossolov, V., Shumeiko, N., Gonzalez, J. Suarez, Alderweireldt, S., Bansal, S., Cornelis, T., De Wolf, E. A., Janssen, X., Knutsson, A., Lauwers, J., Luyckx, S., Ochesanu, S., Rougny, R., Van De Klundert, M., Van Haevermaet, H., Van Mechelen, P., Van Remortel, N., Van Spilbeeck, A., Blekman, F., Blyweert, S., D'Hondt, J., Daci, N., Heracleous, N., Keaveney, J., Lowette, S., Maes, M., Olbrechts, A., Python, Q., Strom, D., Tavernier, S., Van Doninck, W., Van Mulders, P., Van Onsem, G. P., Villella, I., Caillol, C., Clerbaux, B., De Lentdecker, G., Dobur, D., Favart, L., Gay, A. P. R., Grebenyuk, A., Léonard, A., Mohammadi, A., Perniè, L., Randle-conde, A., Reis, T., Seva, T., Thomas, L., Velde, C. Vander, Vanlaer, P., Wang, J., Zenoni, F., Adler, V., Beernaert, K., Benucci, L., Cimmino, A., Costantini, S., Crucy, S., Dildick, S., Fagot, A., Garcia, G., Mccartin, J., Rios, A. A. Ocampo, Ryckbosch, D., Diblen, S. Salva, Sigamani, M., Strobbe, N., Thyssen, F., Tytgat, M., Yazgan, E., Zaganidis, N., Basegmez, S., Beluffi, C., Bruno, G., Castello, R., Caudron, A., Ceard, L., Da Silveira, G. G., Delaere, C., Pree, T. du, Favart, D., Forthomme, L., Giammanco, A., Hollar, J., Jafari, A., Jez, P., Komm, M., Lemaitre, V., Nuttens, C., Pagano, D., Perrini, L., Pin, A., Piotrzkowski, K., Popov, A., Quertenmont, L., Selvaggi, M., Marono, M. Vidal, Garcia, J. M. Vizan, Beliy, N., Caebergs, T., Daubie, E., Hammad, G. H., Júnior, W. L. Aldá, Alves, G. A., Brito, L., Junior, M. Correa Martins, Martins, T. Dos Reis, Herrera, C. Mora, Pol, M. E., Teles, P. Rebello, Carvalho, W., Chinellato, J., Custódio, A., Da Costa, E. M., Damiao, D. De Jesus, Martins, C. De Oliveira, De Souza, S. Fonseca, Malbouisson, H., Figueiredo, D. Matos, Mundim, L., Nogima, H., Da Silva, W. L. Prado, Santaolalla, J., Santoro, A., Sznajder, A., Manganote, E. J. Tonelli, Pereira, A. Vilela, Bernardes, C. A., Dogra, S., Tomei, T. R. Fernandez Perez, Gregores, E. M., Mercadante, P. G., Novaes, S. F., Padula, Sandra S., Aleksandrov, A., Genchev, V., Hadjiiska, R., Iaydjiev, P., Marinov, A., Piperov, S., Rodozov, M., Sultanov, G., Vutova, M., Dimitrov, A., Glushkov, I., Litov, L., Pavlov, B., Petkov, P., Bian, J. G., Chen, G. M., Chen, H. S., Chen, M., Cheng, T., Du, R., Jiang, C. H., Plestina, R., Romeo, F., Tao, J., Wang, Z., Asawatangtrakuldee, C., Ban, Y., Li, Q., Liu, S., Mao, Y., Qian, S. J., Wang, D., Xu, Z., Zou, W., Avila, C., Cabrera, A., Sierra, L. F. Chaparro, Florez, C., Gomez, J. P., Moreno, B. Gomez, Sanabria, J. C., Godinovic, N., Lelas, D., Polic, D., Puljak, I., Antunovic, Z., Kovac, M., Brigljevic, V., Kadija, K., Luetic, J., Mekterovic, D., Sudic, L., Attikis, A., Mavromanolakis, G., Mousa, J., Nicolaou, C., Ptochos, F., Razis, P. A., Bodlak, M., Finger, M., Finger Jr., M., Assran, Y., Kamel, A. Ellithi, Mahmoud, M. A., Radi, A., Kadastik, M., Murumaa, M., Raidal, M., Tiko, A., Eerola, P., Fedi, G., Voutilainen, M., Härkönen, J., Karimäki, V., Kinnunen, R., Kortelainen, M. J., Lampén, T., Lassila-Perini, K., Lehti, S., Lindén, T., Luukka, P., Mäenpää, T., Peltola, T., Tuominen, E., Tuominiemi, J., Tuovinen, E., Wendland, L., Talvitie, J., Tuuva, T., Besancon, M., Couderc, F., Dejardin, M., Denegri, D., Fabbro, B., Faure, J. L., Favaro, C., Ferri, F., Ganjour, S., Givernaud, A., Gras, P., de Monchenault, G. Hamel, Jarry, P., Locci, E., Malcles, J., Rander, J., Rosowsky, A., Titov, M., Baffioni, S., Beaudette, F., Busson, P., Charlot, C., Dahms, T., Dalchenko, M., Dobrzynski, L., Filipovic, N., Florent, A., de Cassagnac, R. Granier, Mastrolorenzo, L., Miné, P., Mironov, C., Naranjo, I. N., Nguyen, M., Ochando, C., Ortona, G., Paganini, P., Regnard, S., Salerno, R., Sauvan, J. B., Sirois, Y., Veelken, C., Yilmaz, Y., Zabi, A., Agram, J. -L., Andrea, J., Aubin, A., Bloch, D., Brom, J. -M., Chabert, E. C., Collard, C., Conte, E., Fontaine, J. -C., Gelé, D., Goerlach, U., Goetzmann, C., Bihan, A. -C. Le, Skovpen, K., Van Hove, P., Gadrat, S., Beauceron, S., Beaupere, N., Boudoul, G., Bouvier, E., Brochet, S., Montoya, C. A. Carrillo, Chasserat, J., Chierici, R., Contardo, D., Depasse, P., Mamouni, H. El, Fan, J., Fay, J., Gascon, S., Gouzevitch, M., Ille, B., Kurca, T., Lethuillier, M., Mirabito, L., Perries, S., Alvarez, J. D. Ruiz, Sabes, D., Sgandurra, L., Sordini, V., Donckt, M. Vander, Verdier, P., Viret, S., Xiao, H., Tsamalaidze, Z., Autermann, C., Beranek, S., Bontenackels, M., Edelhoff, M., Feld, L., Heister, A., Hindrichs, O., Klein, K., Ostapchuk, A., Raupach, F., Sammet, J., Schael, S., Schulte, J. F., Weber, H., Wittmer, B., Zhukov, V., Ata, M., Brodski, M., Dietz-Laursonn, E., Duchardt, D., Erdmann, M., Fischer, R., Güth, A., Hebbeker, T., Heidemann, C., Hoepfner, K., Klingebiel, D., Knutzen, S., Kreuzer, P., Merschmeyer, M., Meyer, A., Millet, P., Olschewski, M., Padeken, K., Papacz, P., Reithler, H., Schmitz, S. A., Sonnenschein, L., Teyssier, D., Thüer, S., Weber, M., Cherepanov, V., Erdogan, Y., Flügge, G., Geenen, H., Geisler, M., Ahmad, W. Haj, Hoehle, F., Kargoll, B., Kress, T., Kuessel, Y., Künsken, A., Lingemann, J., Nowack, A., Nugent, I. M., Pooth, O., Stahl, A., Martin, M. Aldaya, Asin, I., Bartosik, N., Behr, J., Behrens, U., Bell, A. J., Bethani, A., Borras, K., Burgmeier, A., Cakir, A., Calligaris, L., Campbell, A., Choudhury, S., Costanza, F., Pardos, C. Diez, Dolinska, G., Dooling, S., Dorland, T., Eckerlin, G., Eckstein, D., Eichhorn, T., Flucke, G., Garcia, J. Garay, Geiser, A., Gunnellini, P., Hauk, J., Hempel, M., Jung, H., Kalogeropoulos, A., Kasemann, M., Katsas, P., Kieseler, J., Kleinwort, C., Korol, I., Krücker, D., Lange, W., Leonard, J., Lipka, K., Lobanov, A., Lohmann, W., Lutz, B., Mankel, R., Marfin, I., Melzer-Pellmann, I. -A., Meyer, A. B., Mittag, G., Mnich, J., Mussgiller, A., Naumann-Emme, S., Nayak, A., Ntomari, E., Perrey, H., Pitzl, D., Placakyte, R., Raspereza, A., Cipriano, P. M. Ribeiro, Roland, B., Ron, E., Sahin, M. Ö., Salfeld-Nebgen, J., Saxena, P., Schoerner-Sadenius, T., Schröder, M., Seitz, C., Spannagel, S., Trevino, A. D. R. Vargas, Walsh, R., Wissing, C., Blobel, V., Vignali, M. Centis, Draeger, A. R., Erfle, J., Garutti, E., Goebel, K., Görner, M., Haller, J., Hoffmann, M., Höing, R. S., Junkes, A., Kirschenmann, H., Klanner, R., Kogler, R., Lange, J., Lapsien, T., Lenz, T., Marchesini, I., Ott, J., Peiffer, T., Perieanu, A., Pietsch, N., Poehlsen, J., Poehlsen, T., Rathjens, D., Sander, C., Schettler, H., Schleper, P., Schlieckau, E., Schmidt, A., Seidel, M., Sola, V., Stadie, H., Steinbrück, G., Troendle, D., Usai, E., Vanelderen, L., Vanhoefer, A., Barth, C., Baus, C., Berger, J., Böser, C., Butz, E., Chwalek, T., De Boer, W., Descroix, A., Dierlamm, A., Feindt, M., Frensch, F., Giffels, M., Gilbert, A., Hartmann, F., Hauth, T., Husemann, U., Katkov, I., Kornmayer, A., Kuznetsova, E., Pardo, P. Lobelle, Mozer, M. U., Müller, T., Müller, Th., Nürnberg, A., Quast, G., Rabbertz, K., Röcker, S., Simonis, H. J., Stober, F. M., Ulrich, R., Wagner-Kuhr, J., Wayand, S., Weiler, T., Wolf, R., Anagnostou, G., Daskalakis, G., Geralis, T., Giakoumopoulou, V. A., Kyriakis, A., Loukas, D., Markou, A., Markou, C., Psallidas, A., Topsis-Giotis, I., Agapitos, A., Kesisoglou, S., Panagiotou, A., Saoulidou, N., Stiliaris, E., Aslanoglou, X., Evangelou, I., Flouris, G., Foudas, C., Kokkas, P., Manthos, N., Papadopoulos, I., Paradas, E., Strologas, J., Bencze, G., Hajdu, C., Hidas, P., Horvath, D., Sikler, F., Veszpremi, V., Vesztergombi, G., Zsigmond, A. J., Beni, N., Czellar, S., Karancsi, J., Molnar, J., Palinkas, J., Szillasi, Z., Makovec, A., Raics, P., Trocsanyi, Z. L., Ujvari, B., Sahoo, N., Swain, S. K., Beri, S. B., Bhatnagar, V., Gupta, R., Bhawandeep, U., Kalsi, A. K., Kaur, M., Kumar, R., Mittal, M., Nishu, N., Singh, J. B., Kumar, Ashok, Kumar, Arun, Ahuja, S., Bhardwaj, A., Choudhary, B. C., Kumar, A., Malhotra, S., Naimuddin, M., Ranjan, K., Sharma, V., Banerjee, S., Bhattacharya, S., Chatterjee, K., Dutta, S., Gomber, B., Jain, Sa., Jain, Sh., Khurana, R., Modak, A., Mukherjee, S., Roy, D., Sarkar, S., Sharan, M., Abdulsalam, A., Dutta, D., Kailas, S., Kumar, V., Mohanty, A. K., Pant, L. M., Shukla, P., Topkar, A., Aziz, T., Bhowmik, S., Chatterjee, R. M., Dewanjee, R. K., Dugad, S., Ganguly, S., Ghosh, S., Guchait, M., Gurtu, A., Kole, G., Kumar, S., Maity, M., Majumder, G., Mazumdar, K., Mohanty, G. B., Parida, B., Sudhakar, K., Wickramage, N., Bakhshiansohi, H., Behnamian, H., Etesami, S. M., Fahim, A., Goldouzian, R., Khakzad, M., Najafabadi, M. Mohammadi, Naseri, M., Mehdiabadi, S. Paktinat, Hosseinabadi, F. Rezaei, Safarzadeh, B., Zeinali, M., Felcini, M., Grunewald, M., Abbrescia, M., Calabria, C., Chhibra, S. S., Colaleo, A., Creanza, D., De Filippis, N., De Palma, M., Fiore, L., Iaselli, G., Maggi, G., Maggi, M., My, S., Nuzzo, S., Pompili, A., Pugliese, G., Radogna, R., Selvaggi, G., Sharma, A., Silvestris, L., Venditti, R., Verwilligen, P., Abbiendi, G., Benvenuti, A. C., Bonacorsi, D., Braibant-Giacomelli, S., Brigliadori, L., Campanini, R., Capiluppi, P., Castro, A., Cavallo, F. R., Codispoti, G., Cuffiani, M., Dallavalle, G. M., Fabbri, F., Fanfani, A., Fasanella, D., Giacomelli, P., Grandi, C., Guiducci, L., Marcellini, S., Masetti, G., Montanari, A., Navarria, F. L., Perrotta, A., Primavera, F., Rossi, A. M., Rovelli, T., Siroli, G. P., Tosi, N., Travaglini, R., Albergo, S., Cappello, G., Chiorboli, M., Costa, S., Giordano, F., Potenza, R., Tricomi, A., Tuve, C., Barbagli, G., Ciulli, V., Civinini, C., D'Alessandro, R., Focardi, E., Gallo, E., Gonzi, S., Gori, V., Lenzi, P., Meschini, M., Paoletti, S., Sguazzoni, G., Tropiano, A., Benussi, L., Bianco, S., Piccolo, D., Ferretti, R., Ferro, F., Vetere, M. Lo, Robutti, E., Tosi, S., Dinardo, M. E., Fiorendi, S., Gennai, S., Gerosa, R., Ghezzi, A., Govoni, P., Lucchini, M. T., Malvezzi, S., Manzoni, R. A., Martelli, A., Marzocchi, B., Menasce, D., Moroni, L., Paganoni, M., Pedrini, D., Ragazzi, S., Redaelli, N., de Fatis, T. Tabarelli, Buontempo, S., Cavallo, N., Di Guida, S., Fabozzi, F., Iorio, A. O. M., Lista, L., Meola, S., Merola, M., Paolucci, P., Azzi, P., Bacchetta, N., Bisello, D., Branca, A., Carlin, R., Checchia, P., Dall'Osso, M., Dorigo, T., Dosselli, U., Galanti, M., Gasparini, F., Gasparini, U., Giubilato, P., Gozzelino, A., Kanishchev, K., Lacaprara, S., Margoni, M., Meneguzzo, A. T., Pazzini, J., Pozzobon, N., Ronchese, P., Simonetto, F., Torassa, E., Tosi, M., Zotto, P., Zucchetta, A., Zumerle, G., Gabusi, M., Ratti, S. P., Re, V., Riccardi, C., Salvini, P., Vitulo, P., Biasini, M., Bilei, G. M., Ciangottini, D., Fanò, L., Lariccia, P., Mantovani, G., Menichelli, M., Saha, A., Santocchia, A., Spiezia, A., Androsov, K., Azzurri, P., Bagliesi, G., Bernardini, J., Boccali, T., Broccolo, G., Castaldi, R., Ciocci, M. A., Dell'Orso, R., Donato, S., Fiori, F., Foà, L., Giassi, A., Grippo, M. T., Ligabue, F., Lomtadze, T., Martini, L., Messineo, A., Moon, C. S., Palla, F., Rizzi, A., Savoy-Navarro, A., Serban, A. T., Spagnolo, P., Squillacioti, P., Tenchini, R., Tonelli, G., Venturi, A., Verdini, P. G., Vernieri, C., Barone, L., Cavallari, F., D'imperio, G., Del Re, D., Diemoz, M., Jorda, C., Longo, E., Margaroli, F., Meridiani, P., Micheli, F., Nourbakhsh, S., Organtini, G., Paramatti, R., Rahatlou, S., Rovelli, C., Santanastasio, F., Soffi, L., Traczyk, P., Amapane, N., Arcidiacono, R., Argiro, S., Arneodo, M., Bellan, R., Biino, C., Cartiglia, N., Casasso, S., Costa, M., Degano, A., Demaria, N., Finco, L., Mariotti, C., Maselli, S., Migliore, E., Monaco, V., Musich, M., Obertino, M. M., Pacher, L., Pastrone, N., Pelliccioni, M., Angioni, G. L. Pinna, Potenza, A., Romero, A., Ruspa, M., Sacchi, R., Solano, A., Staiano, A., Tamponi, U., Belforte, S., Candelise, V., Casarsa, M., Cossutti, F., Della Ricca, G., Gobbo, B., La Licata, C., Marone, M., Schizzi, A., Umer, T., Zanetti, A., Chang, S., Kropivnitskaya, A., Nam, S. K., Kim, D. H., Kim, G. N., Kim, M. S., Kong, D. J., Lee, S., Oh, Y. D., Park, H., Sakharov, A., Son, D. C., Kim, T. J., Kim, J. Y., Song, S., Choi, S., Gyun, D., Hong, B., Jo, M., Kim, H., Kim, Y., Lee, B., Lee, K. S., Park, S. K., Roh, Y., Yoo, H. D., Choi, M., Kim, J. H., Park, I. C., Ryu, G., Ryu, M. S., Choi, Y., Choi, Y. K., Goh, J., Kim, D., Kwon, E., Lee, J., Yu, I., Juodagalvis, A., Komaragiri, J. R., Ali, M. A. B. Md, Linares, E. Casimiro, Castilla-Valdez, H., De La Cruz-Burelo, E., La Cruz, I. Heredia-de, Hernandez-Almada, A., Lopez-Fernandez, R., Sanchez-Hernandez, A., Moreno, S. Carrillo, Valencia, F. Vazquez, Pedraza, I., Ibarguen, H. A. Salazar, Pineda, A. Morelos, Krofcheck, D., Butler, P. H., Reucroft, S., Ahmad, A., Ahmad, M., Hassan, Q., Hoorani, H. R., Khan, W. A., Khurshid, T., Shoaib, M., Bialkowska, H., Bluj, M., Boimska, B., Frueboes, T., Górski, M., Kazana, M., Nawrocki, K., Romanowska-Rybinska, K., Szleper, M., Zalewski, P., Brona, G., Bunkowski, K., Cwiok, M., Dominik, W., Doroba, K., Kalinowski, A., Konecki, M., Krolikowski, J., Misiura, M., Olszewski, M., Wolszczak, W., Bargassa, P., Silva, C. Beirão Da Cruz E, Faccioli, P., Parracho, P. G. Ferreira, Gallinaro, M., Iglesias, L. Lloret, Nguyen, F., Antunes, J. Rodrigues, Seixas, J., Varela, J., Vischia, P., Afanasiev, S., Bunin, P., Gavrilenko, M., Golutvin, I., Gorbunov, I., Kamenev, A., Karjavin, V., Konoplyanikov, V., Lanev, A., Malakhov, A., Matveev, V., Moisenz, P., Palichik, V., Perelygin, V., Shmatov, S., Skatchkov, N., Smirnov, V., Zarubin, A., Golovtsov, V., Ivanov, Y., Kim, V., Levchenko, P., Murzin, V., Oreshkin, V., Smirnov, I., Sulimov, V., Uvarov, L., Vavilov, S., Vorobyev, A., Vorobyev, An., Andreev, Yu., Dermenev, A., Gninenko, S., Golubev, N., Kirsanov, M., Krasnikov, N., Pashenkov, A., Tlisov, D., Toropin, A., Epshteyn, V., Gavrilov, V., Lychkovskaya, N., Popov, V., Pozdnyakov, I., Safronov, G., Semenov, S., Spiridonov, A., Stolin, V., Vlasov, E., Zhokin, A., Andreev, V., Azarkin, M., Dremin, I., Kirakosyan, M., Leonidov, A., Mesyats, G., Rusakov, S. V., Vinogradov, A., Belyaev, A., Boos, E., Dubinin, M., Dudko, L., Ershov, A., Gribushin, A., Klyukhin, V., Kodolova, O., Lokhtin, I., Obraztsov, S., Petrushanko, S., Savrin, V., Snigirev, A., Azhgirey, I., Bayshev, I., Bitioukov, S., Kachanov, V., Kalinin, A., Konstantinov, D., Krychkine, V., Petrov, V., Ryutin, R., Sobol, A., Tourtchanovitch, L., Troshin, S., Tyurin, N., Uzunian, A., Volkov, A., Adzic, P., Ekmedzic, M., Milosevic, J., Rekovic, V., Maestre, J. Alcaraz, Battilana, C., Calvo, E., Cerrada, M., Llatas, M. Chamizo, Colino, N., De La Cruz, B., Peris, A. Delgado, Vázquez, D. Domínguez, Del Valle, A. Escalante, Bedoya, C. Fernandez, Ramos, J. P. Fernández, Flix, J., Fouz, M. C., Garcia-Abia, P., Lopez, O. Gonzalez, Lopez, S. Goy, Hernandez, J. M., Josa, M. I., De Martino, E. Navarro, Yzquierdo, A. Pérez-Calero, Pelayo, J. Puerta, Olmeda, A. Quintario, Redondo, I., Romero, L., Soares, M. S., Albajar, C., de Trocóniz, J. 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C., Palano, A., Carbone, A., Falabella, A., Galli, D., Marconi, U., Moggi, N., Mussini, M., Perazzini, S., Vagnoni, V., Valenti, G., Zangoli, M., Bonivento, W., Cadeddu, S., Cardini, A., Cogoni, V., Contu, A., Lai, A., Liu, B., Manca, G., Oldeman, R., Saitta, B., Vacca, C., Andreotti, M., Baldini, W., Bozzi, C., Calabrese, R., Corvo, M., Fiore, M., Fiorini, M., Luppi, E., Pappalardo, L. L., Shapoval, I., Tellarini, G., Tomassetti, L., Vecchi, S., Anderlini, L., Bizzeti, A., Frosini, M., Graziani, G., Passaleva, G., Veltri, M., Bencivenni, G., Campana, P., De Simone, P., Lanfranchi, G., Palutan, M., Rama, M., Sarti, A., Sciascia, B., Gomez, R. 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A., Auriemma, G., Bocci, V., Martellotti, G., Penso, G., Pinci, D., Santacesaria, R., Satriano, C., Sciubba, A., Dziurda, A., Kucewicz, W., Lesiak, T., Rachwal, B., Witek, M., Firlej, M., Fiutowski, T., Idzik, M., Morawski, P., Moron, J., Oblakowska-Mucha, A., Swientek, K., Szumlak, T., Batozskaya, V., Klimaszewski, K., Kurek, K., Szczekowski, M., Ukleja, A., Wislicki, W., Cojocariu, L., Giubega, L., Grecu, A., Maciuc, F., Orlandea, M., Popovici, B., Stoica, S., Straticiuc, M., Alkhazov, G., Bondar, N., Dzyuba, A., Maev, O., Sagidova, N., Shcheglov, Y., Belogurov, S., Belyaev, I., Egorychev, V., Golubkov, D., Kvaratskheliya, T., Machikhiliyan, I. V., Polyakov, I., Savrina, D., Semennikov, A., Zhokhov, A., Berezhnoy, A., Korolev, M., Leflat, A., Nikitin, N., Filippov, S., Gushchin, E., Kravchuk, L., Bondar, A., Eidelman, S., Krokovny, P., Kudryavtsev, V., Shekhtman, L., Vorobyev, V., Artamonov, A., Belous, K., Dzhelyadin, R., Guz, Yu., Novoselov, A., Obraztsov, V., Romanovsky, V., Shapkin, M., Stenyakin, O., Yushchenko, O., Badalov, A., Gomez, M. Calvo, Garrido, L., Gascon, D., Diaz, R. Graciani, Graugés, E., Benito, C. Marin, Olloqui, E. Picatoste, Molina, V. Rives, Ruiz, H., Vilasis-Cardona, X., Adeva, B., Cartelle, P. Alvarez, Suárez, A. Dosil, Albor, V. Fernandez, Torreira, A. Gallas, Pardiñas, J. García, Morata, J. A. Hernando, Casasus, M. Plo, Vidal, A. Romero, Silva, J. J. Saborido, Sedes, B. Sanmartin, Rios, C. Santamarina, Regueiro, P. Vazquez, Sierra, C. Vázquez, Diaz, M. Vieites, Alessio, F., Archilli, F., Barschel, C., Benson, S., Buytaert, J., Perez, D. Campora, Garcia, L. Castillo, Cattaneo, M., Charpentier, Ph., Vidal, X. Cid, Clemencic, M., Closier, J., Coco, V., Collins, P., Corti, G., Couturier, B., D'Ambrosio, C., Dettori, F., Di Canto, A., Dijkstra, H., Durante, P., Ferro-Luzzi, M., Forty, R., Frank, M., Frei, C., Gaspar, C., Gligorov, V. V., Cardoso, L. A. Granado, Gys, T., Haen, C., He, J., Head, T., van Herwijnen, E., Jacobsson, R., Johnson, D., Joram, C., Jost, B., Karacson, M., Karbach, T. M., Lacarrere, D., Langhans, B., Lindner, R., Linn, C., Lohn, S., Mapelli, A., Matev, R., Mathe, Z., Neubert, S., Neufeld, N., Otto, A., Panman, J., Altarelli, M. Pepe, Rauschmayr, N., Rihl, M., Roiser, S., Ruf, T., Schindler, H., Schmidt, B., Schopper, A., Schwemmer, R., Sridharan, S., Stagni, F., Subbiah, V. K., Teubert, F., Thomas, E., Tonelli, D., Trisovic, A., Garcia, M. Ubeda, Wicht, J., Wyllie, K., Battista, V., Bay, A., Blanc, F., Dorigo, M., Dupertuis, F., Fitzpatrick, C., Gianì, S., Haefeli, G., Jaton, P., Khurewathanakul, C., Komarov, I., La Thi, V. N., Lopez-March, N., Märki, R., Martinelli, M., Muster, B., Nakada, T., Nguyen, A. D., Nguyen, T. D., Nguyen-Mau, C., Prisciandaro, J., Navarro, A. Puig, Rakotomiaramanana, B., Rouvinet, J., Schneider, O., Soomro, F., Szczypka, P., Tobin, M., Tourneur, S., Tran, M. T., Veneziano, G., Bernet, R., Bowen, E., Bursche, A., Chiapolini, N., Chrzaszcz, M., Elsasser, Ch., Graverini, E., Lionetto, F., Lowdon, P., Müller, K., Serra, N., Steinkamp, O., Storaci, B., Straumann, U., Tresch, M., Vollhardt, A., Aaij, R., Ali, S., van Beuzekom, M., David, P. N. Y., De Bruyn, K., Farinelli, C., Heijne, V., Hulsbergen, W., Jans, E., Koppenburg, P., Kozlinskiy, A., van Leerdam, J., Merk, M., Oggero, S., Pellegrino, A., Snoek, H., van Tilburg, J., Tsopelas, P., Tuning, N., de Vries, J. A., Ketel, T., Koopman, R. F., Lambert, R. W., Santos, D. Martinez, Raven, G., Schiller, M., Syropoulos, V., Tolk, S., Dovbnya, A., Kandybei, S., Raniuk, I., Okhrimenko, O., Pugatch, V., Bifani, S., Farley, N., Griffith, P., Kenyon, I. R., Lazzeroni, C., Mazurov, A., McCarthy, J., Pescatore, L., Watson, N. K., Williams, M. P., Adinolfi, M., Benton, J., Brook, N. H., Cook, A., Coombes, M., Dalseno, J., Hampson, T., Harnew, S. T., Naik, P., Price, E., Prouve, C., Rademacker, J. H., Richards, S., Saunders, D. M., Skidmore, N., Souza, D., Velthuis, J. J., Voong, D., Barter, W., Bettler, M. -O., Cliff, H. V., Evans, H. -M., Tico, J. Garra, Gibson, V., Gregson, S., Haines, S. C., Jones, C. R., Sirendi, M., Ward, D. R., Wotton, S. A., Wright, S., Back, J. J., Blake, T., Craik, D. C., Crocombe, A. C., Dossett, D., Gershon, T., Kreps, M., Langenbruch, C., Latham, T., O'Hanlon, D. P., Pilař, T., Poluektov, A., Reid, M. M., Coutinho, R. Silva, Wallace, C., Whitehead, M., Easo, S., Nandakumar, R., Papanestis, A., Ricciardi, S., Wilson, F. F., Carson, L., Clarke, P. E. L., Cowan, G. A., Eisenhardt, S., Ferguson, D., Lambert, D., Luo, H., Morris, A. -B., Muheim, F., Needham, M., Playfer, S., Alexander, M., Beddow, J., Dean, C. -T., Eklund, L., Hynds, D., Karodia, S., Longstaff, I., Ogilvy, S., Pappagallo, M., Sail, P., Skillicorn, I., Soler, F. J. P., Spradlin, P., Affolder, A., Bowcock, T. J. V., Brown, H., Casse, G., Donleavy, S., Dreimanis, K., Farry, S., Fay, R., Hennessy, K., Hutchcroft, D., Liles, M., McSkelly, B., Patel, G. D., Price, J. D., Pritchard, A., Rinnert, K., Shears, T., Smith, N. A., Ciezarek, G., Cunliffe, S., Currie, R., Egede, U., Fol, P., Golutvin, A., Hall, S., McCann, M., Owen, P., Patel, M., Redi, F., Sepp, I., Smith, E., Sutcliffe, W., Websdale, D., Appleby, R. B., Barlow, R. J., Bird, T., Bjørnstad, P. M., Borghi, S., Brett, D., Brodzicka, J., Capriotti, L., Chen, S., De Capua, S., Dujany, G., Gersabeck, M., Harrison, J., Hombach, C., Klaver, S., Lafferty, G., McNab, A., Parkes, C., Pearce, A., Reichert, S., Rodrigues, E., Perez, P. Rodriguez, Smith, M., Cheung, S. -F., Derkach, D., Evans, T., Gauld, R., Greening, E., Harnew, N., Hill, D., Hunt, P., Hussain, N., Jalocha, J., John, M., Lupton, O., Malde, S., Stevenson, S., Thomas, C., Topp-Joergensen, S., Torr, N., Wilkinson, G., Counts, I., Ilten, P., Williams, M., Andreassen, R., Davis, A., De Silva, W., Meadows, B., Sokoloff, M. D., Sun, L., Todd, J., Andrews, J. E., Hamilton, B., Jawahery, A., Wimberley, J., Artuso, M., Blusk, S., Borgia, A., Britton, T., Ely, S., Gandini, P., Garofoli, J., Gui, B., Hadjivasiliou, C., Jurik, N., Kelsey, M., Mountain, R., Pal, B. K., Skwarnicki, T., Stone, S., Xing, Z., Zhang, L., Baesso, C., Torres, M. Cruz, Göbel, C., Rodriguez, J. Molina, Xie, Y., Milanes, D. A., Grünberg, O., Heß, M., Voß, C., Waldi, R., Likhomanenko, T., Malinin, A., Shevchenko, V., Ustyuzhanin, A., Vidal, F. Martinez, Oyanguren, A., Valls, P. Ruiz, Mayordomo, C. Sanchez, Onderwater, C. J. G., Wilschut, H. W., and Pesen, E.

Subjects
High Energy Physics - Experiment, High Energy Physics - Phenomenology
Abstract

A joint measurement is presented of the branching fractions $B^0_s\to\mu^+\mu^-$ and $B^0\to\mu^+\mu^-$ in proton-proton collisions at the LHC by the CMS and LHCb experiments. The data samples were collected in 2011 at a centre-of-mass energy of 7 TeV, and in 2012 at 8 TeV. The combined analysis produces the first observation of the $B^0_s\to\mu^+\mu^-$ decay, with a statistical significance exceeding six standard deviations, and the best measurement of its branching fraction so far. Furthermore, evidence for the $B^0\to\mu^+\mu^-$ decay is obtained with a statistical significance of three standard deviations. The branching fraction measurements are statistically compatible with SM predictions and impose stringent constraints on several theories beyond the SM., Comment: Correspondence should be addressed to cms-and-lhcb-publication-committees@cern.ch

Published
2014
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25. Characterization of a medium size Xe/TMA TPC instrumented with microbulk Micromegas, using low-energy $\gamma$-rays

Author

The NEXT collaboration, Alvarez, V., Borges, F. I. G. M., Carcel, S., Castel, J., Cebrian, S., Cervera, A., Conde, C. A. N., Dafni, T., Dias, T. H. V. T., Diaz, J., Egorov, M., Esteve, R., Evtoukhovitch, P., Fernandes, L. M. P., Ferrario, P., Ferreira, A. L., Freitas, E. D. C., Gehman, V. M., Gil, A., Goldschmidt, A., Gomez, H., Gomez-Cadenas, J. J., Gonzalez-Diaz, D., Gutierrez, R. M., Hauptman, J., Morata, J. A. Hernando, Herrera, D. C., Iguaz, F. J., Irastorza, I. G., Jinete, M. A., Labarga, L., Laing, A., Liubarsky, I., Lopes, J. A. M., Lorca, D., Losada, M., Luzon, G., Mari, A., Martin-Albo, J., Martinez, A., Martinez-Lema, G., Miller, T., Moiseenko, A., Monrabal, F., Monteiro, C. M. B., Mora, F. J., Moutinho, L. M., Vidal, J. Munoz, da Luz, H. Natal, Navarro, G., Nebot-Guinot, M., Nygren, D., Oliveira, C. A. B., Palma, R., Perez, J., Aparicio, J. L. Perez, Renner, J., Ripoll, L., Rodriguez, A., Rodriguez, J., Santos, F. P., Santos, J. M. F. dos, Segui, L., Serra, L., Shuman, D., Simon, A., Sofka, C., Sorel, M., Toledo, J. F., Tomas, A., Torrent, J., Tsamalaidze, Z., Vazquez, D., Veloso, J. F. C. A., Villar, J. A., Webb, R. C., White, J. T., Yahlali, N., Aznar, F., Calvet, D., Druillole, F., Ferrer-Ribas, E., Garcia, J. A., Giomataris, I., Gracia, J., Coguie, A. Le, Mols, J. P., Pons, P., and Ruiz, E.

Subjects
Physics - Instrumentation and Detectors
Abstract

NEXT-MM is a general-purpose high pressure (10 bar, $\sim25$ l active volume) Xenon-based TPC, read out in charge mode with an 8 cm $\times$8 cm-segmented 700 cm$^2$ plane (1152 ch) of the latest microbulk-Micromegas technology. It has been recently commissioned at University of Zaragoza as part of the R&D of the NEXT $0\nu\beta\beta$ experiment, although the experiment's first stage is currently being built based on a SiPM/PMT-readout concept relying on electroluminescence. Around 2 million events were collected during the last months, stemming from the low energy $\gamma$-rays emitted by a $^{241}$Am source when interacting with the Xenon gas ($\epsilon$ = 26, 30, 59.5 keV). The localized nature of such events above atmospheric pressure, the long drift times, as well as the possibility to determine their production time from the associated $\alpha$ particle in coincidence, allow the extraction of primordial properties of the TPC filling gas, namely the drift velocity, diffusion and attachment coefficients. In this work we focus on the little explored combination of Xe and trimethylamine (TMA) for which, in particular, such properties are largely unknown. This gas mixture offers potential advantages over pure Xenon when aimed at Rare Event Searches, mainly due to its Penning characteristics, wave-length shifting properties and reduced diffusion, and it is being actively investigated by our collaboration. The chamber is currently operated at 2.7 bar, as an intermediate step towards the envisaged 10 bar. We report here its performance as well as a first implementation of the calibration procedures that have allowed the extension of the previously reported energy resolution to the whole readout plane (10.6%FWHM@30keV)., Comment: 22 pages, 13 figures

Published
2013
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27. Initial results of NEXT-DEMO, a large-scale prototype of the NEXT-100 experiment

Author

NEXT Collaboration, Álvarez, V., Borges, F. I. G. M., Cárcel, S., Castel, J., Cebrián, S., Cervera, A., Conde, C. A. N., Dafni, T., Dias, T. H. V. T., Díaz, J., Egorov, M., Esteve, R., Evtoukhovitch, P., Fernandes, L. M. P., Ferrario, P., Ferreira, A. L., Freitas, E. D. C., Gehman, V. M., Gil, A., Goldschmidt, A., Gómez, H., Gómez-Cadenas, J. J., González-Díaz, D., Gutiérrez, R. M., Hauptman, J., Morata, J. A. Hernando, Herrera, D. C., Iguaz, F. J., Irastorza, I. G., Jinete, M. A., Labarga, L., Laing, A., Liubarsky, I., Lopes, J. A. M., Lorca, D., Losada, M., Luzón, G., Marí, A., Martín-Albo, J., Martínez, A., Miller, T., Moiseenko, A., Monrabal, F., Monteiro, C. M. B., Mora, F. J., Moutinho, L. M., Vidal, J. Muñoz, da Luz, H. Natal, Navarro, G., Nebot-Guinot, M., Nygren, D., Oliveira, C. A. B., Palma, R., Pérez, J., Aparicio, J. L. Pérez, Renner, J., Ripoll, L., Rodríguez, A., Rodríguez, J., Santos, F. P., Santos, J. M. F. dos, Segui, L., Serra, L., Shuman, D., Simón, A., Sofka, C., Sorel, M., Toledo, J. F., Tomás, A., Torrent, J., Tsamalaidze, Z., Vázquez, D., Veloso, J. F. C. A., Villar, J. A., Webb, R., White, J. T, and Yahlali, N.

Subjects
Physics - Instrumentation and Detectors
Abstract

NEXT-DEMO is a large-scale prototype of the NEXT-100 detector, an electroluminescent time projection chamber that will search for the neutrinoless double beta decay of Xe-136 using 100 to 150 kg of enriched xenon gas. NEXT-DEMO was built to prove the expected performance of NEXT-100, namely, energy resolution better than 1% FWHM at 2.5 MeV and event topological reconstruction. In this paper we describe the prototype and its initial results. A resolution of 1.75% FWHM at 511 keV (which extrapolates to 0.8% FWHM at 2.5 MeV) was obtained at 10 bar pressure using a gamma-ray calibration source. Also, a basic study of the event topology along the longitudinal coordinate is presented, proving that it is possible to identify the distinct dE/dx of electron tracks in high-pressure xenon using an electroluminescence TPC., Comment: 23 pages, 22 figures. Version accepted for publication by the Journal of Instrumentation (JINST)

Published
2012
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28. Near-Intrinsic Energy Resolution for 30 to 662 keV Gamma Rays in a High Pressure Xenon Electroluminescent TPC

Author

NEXT Collaboration, Álvarez, V., Borges, F. I. G. M., Cárcel, S., Castel, J., Cebrián, S., Cervera, A., Conde, C. A. N., Dafni, T., Dias, T. H. V. T., Díaz, J., Egorov, M., Esteve, R., Evtoukhovitch, P., Fernandes, L. M. P., Ferrario, P., Ferreira, A. L., Freitas, E. D. C., Gehman, V. M., Gil, A., Goldschmidt, A., Gómez, H., Gómez-Cadenas, J. J., González-Díaz, D., Gutiérrez, R. M., Hauptman, J., Morata, J. A. Hernando, Herrera, D. C., Iguaz, F. J., Irastorza, I. G., Jinete, M. A., Labarga, L., Laing, A., Liubarsky, I., Lopes, J. A. M., Lorca, D., Losada, M., Luzón, G., Marí, A., Martín-Albo, J., Martínez, A., Miller, T., Moiseenko, A., Monrabal, F., Monteiro, C. M. B., Mora, F. J., Moutinho, L. M., Vidal, J. Muñoz, da Luz, H. Natal, Navarro, G., Nebot, M., Nygren, D., Oliveira, C. A. B., Palma, R., Pérez, J., Aparicio, J. L. Pérez, Renner, J., Ripoll, L., Rodríguez, A., Rodríguez, J., Santos, F. P., Santos, J. M. F. dos, Segui, L., Serra, L., Shuman, D., Simón, A., Sofka, C., Sorel, M., Toledo, J. F., Tomás, A., Torrent, J., Tsamalaidze, Z., Vázquez, D., Veloso, J. F. C. A., Villar, J. A., Webb, R., White, J. T, and Yahlali, N.

Subjects
Physics - Instrumentation and Detectors, High Energy Physics - Experiment, Nuclear Experiment
Abstract

We present the design, data and results from the NEXT prototype for Double Beta and Dark Matter (NEXT-DBDM) detector, a high-pressure gaseous natural xenon electroluminescent time projection chamber (TPC) that was built at the Lawrence Berkeley National Laboratory. It is a prototype of the planned NEXT-100 $^{136}$Xe neutrino-less double beta decay ($0\nu\beta\beta$) experiment with the main objectives of demonstrating near-intrinsic energy resolution at energies up to 662 keV and of optimizing the NEXT-100 detector design and operating parameters. Energy resolutions of $\sim$1% FWHM for 662 keV gamma rays were obtained at 10 and 15 atm and $\sim$5% FWHM for 30 keV fluorescence xenon X-rays. These results demonstrate that 0.5% FWHM resolutions for the 2,459 keV hypothetical neutrino-less double beta decay peak are realizable. This energy resolution is a factor 7 to 20 better than that of the current leading $0\nu\beta\beta$ experiments using liquid xenon and thus represents a significant advancement. We present also first results from a track imaging system consisting of 64 silicon photo-multipliers recently installed in NEXT-DBDM that, along with the excellent energy resolution, demonstrates the key functionalities required for the NEXT-100 $0\nu\beta\beta$ search., Comment: 51 pages, 26 figures

Published
2012

29. In-situ calibration of a PMT inside a scintillation detector by means of primary scintillation detection

Author

NEXT Collaboration, Álvarez, V., Borges, F. I. G. M., Cárcel, S., Castel, J., Cebrián, S., Cervera, A., Conde, C. A. N., Dafni, T., Dias, T. H. V. T., Díaz, J., Egorov, M., Esteve, R., Evtoukhovitch, P., Fernandes, L. M. P., Ferrario, P., Ferreira, A. L., Freitas, E. D. C., Gehman, V. M., Gil, A., Goldschmidt, A., Gómez, H., Gómez-Cadenas, J. J., González-Díaz, D., Gutiérrez, R. M., Hauptman, J., Morata, J. A. Hernando, Herrera, D. C., Iguaz, F. J., Irastorza, I. G., Jinete, M. A., Labarga, L., Laing, A., Liubarsky, I., Lopes, J. A. M., Lorca, D., Losada, M., Luzón, G., Marí, A., Martín-Albo, J., Martínez, A., Miller, T., Moiseenko, A., Monrabal, F., Monteiro, C. M. B., Mora, F. J., Moutinho, L. M., Vidal, J. Muñoz, da Luz, H. Natal, Navarro, G., Nebot, M., Nygren, D., Oliveira, C. A. B., Palma, R., Pérez, J., Aparicio, J. L. Pérez, Renner, J., Ripoll, L., Rodríguez, A., Rodríguez, J., Santos, F. P., Santos, J. M. F. dos, Segui, L., Serra, L., Shuman, D., Simón, A., Sofka, C., Sorel, M., Toledo, J. F., Tomás, A., Torrent, J., Tsamalaidze, Z., Vázquez, D., Veloso, J. F. C. A., Villar, J. A., Webb, R. C., White, J. T, and Yahlali, N.

Subjects
Physics - Instrumentation and Detectors, High Energy Physics - Experiment
Abstract

We have investigated the possibility of calibrating the PMTs of scintillation detectors, using the primary scintillation produced by X-rays to induce single photoelectron response of the PMT. The high-energy tail of this response, can be approximated to an exponential function, under some conditions. In these cases, it is possible to determine the average gain for each PMT biasing voltage from the inverse of the exponent of the exponential fit to the tail, which can be done even if the background and/or noise cover-up most of the distribution. We have compared our results with those obtained by the commonly used single electron response (SER) method, which uses a LED to induce a single photoelectron response of the PMT and determines the peak position of such response, relative to the pedestal peak (the electronic noise peak, which corresponds to 0 photoelectrons). The results of the exponential fit method agree with those obtained by the SER method when the average number of photoelectrons reaching the first dynode per light/scintillation pulse is around 1.0. The SER method has higher precision, while the exponential fit method has the advantage of being useful in situations where the PMT is already in situ, being difficult or even impossible to apply the SER method, e.g. in sealed scintillator/PMT devices., Comment: 11 pages, 8 figures

Published
2012

30. Ionization and scintillation response of high-pressure xenon gas to alpha particles

Author

NEXT Collaboration, Álvarez, V., Borges, F. I. G. M., Cárcel, S., Cebrián, S., Cervera, A., Conde, C. A. N., Dafni, T., Díaz, J., Egorov, M., Esteve, R., Evtoukhovitch, P., Fernandes, L. M. P., Ferrario, P., Ferreira, A. L., Freitas, E. D. C., Gehman, V. M., Gil, A., Goldschmidt, A., Gómez, H., Gómez-Cadenas, J. J., González-Díaz, D., Gutiérrez, R. M., Hauptman, J., Morata, J. A. Hernando, Herrera, D. C., Irastorza, I. G., Jinete, M. A., Labarga, L., Laing, A., Liubarsky, I., Lopes, J. A. M., Lorca, D., Losada, M., Luzón, G., Marí, A., Martín-Albo, J., Miller, T., Moiseenko, A., Monrabal, F., Monteiro, C. M. B., Mora, F. J., Moutinho, L. M., Vidal, J. Muñoz, da Luz, H. Natal, Navarro, G., Nebot-Guinot, M., Nygren, D., Oliveira, C. A. B., Palma, R., Pérez, J., Aparicio, J. L. Pérez, Renner, J., Ripoll, L., Rodríguez, A., Rodríguez, J., Santos, F. P., Santos, J. M. F. dos, Segui, L., Serra, L., Shuman, D., Simón, A., Sofka, C., Sorel, M., Toledo, J. F., Tomás, A., Torrent, J., Tsamalaidze, Z., Vázquez, D., Veloso, J. F. C. A., Webb, R., White, J. T, and Yahlali, N.

Subjects
Physics - Instrumentation and Detectors, Astrophysics - Instrumentation and Methods for Astrophysics, High Energy Physics - Experiment, Nuclear Experiment
Abstract

High-pressure xenon gas is an attractive detection medium for a variety of applications in fundamental and applied physics. In this paper we study the ionization and scintillation detection properties of xenon gas at 10 bar pressure. For this purpose, we use a source of alpha particles in the NEXT-DEMO time projection chamber, the large scale prototype of the NEXT-100 neutrinoless double beta decay experiment, in three different drift electric field configurations. We measure the ionization electron drift velocity and longitudinal diffusion, and compare our results to expectations based on available electron scattering cross sections on pure xenon. In addition, two types of measurements addressing the connection between the ionization and scintillation yields are performed. On the one hand we observe, for the first time in xenon gas, large event-by-event correlated fluctuations between the ionization and scintillation signals, similar to that already observed in liquid xenon. On the other hand, we study the field dependence of the average scintillation and ionization yields. Both types of measurements may shed light on the mechanism of electron-ion recombination in xenon gas for highly-ionizing particles. Finally, by comparing the response of alpha particles and electrons in NEXT-DEMO, we find no evidence for quenching of the primary scintillation light produced by alpha particles in the xenon gas., Comment: 36 pages, 19 figures, 5 tables. Version accepted for publication in JINST

Published
2012
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31. Radiopurity control in the NEXT-100 double beta decay experiment: procedures and initial measurements

Author

Alvarez, V., Bandac, I., Bettini, A., Borges, F. I. G. M., Carcel, S., Castel, J., Cebrian, S., Cervera, A., Conde, C. A. N., Dafni, T., Dias, T. H. V. T., Diaz, J., Egorov, M., Esteve, R., Evtoukhovitch, P., Fernandes, L. M. P., Ferrario, P., Ferreira, A. L., Freitas, E. D. C., Gehman, V. M., Gil, A., Goldschmidt, A., Gomez, H., Gomez-Cadenas, J. J., Gonzalez-Diaz, D., Gutierrez, R. M., Hauptman, J., Morata, J. A. Hernando, Herrera, D. C., Iguaz, F. J., Irastorza, I. G., Jinete, M. A., Labarga, L., Laing, A., Liubarsky, I., Lopes, J. A. M., Lorca, D., Losada, M., Luzon, G., Mari, A., Martin-Albo, J., Martinez, A., Miller, T., Moiseenko, A., Monrabal, F., Monteiro, C. M. B., Mora, F. J., Moutinho, L. M., Vidal, J. Munoz, da Luz, H. Natal, Navarro, G., Nebot, M., Nygren, D., Oliveira, C. A. B., de Solorzano, A. Ortiz, Palma, R., Perez, J., Aparicio, J. L. Perez, Renner, J., Ripoll, L., Rodriguez, A., Rodriguez, J., Santos, F. P., Santos, J. M. F. dos, Segui, L., Serra, L., Shuman, D., Simon, A., Sofka, C., Sorel, M., Toledo, J. F., Tomas, A., Torrent, J., Tsamalaidze, Z., Vazquez, D., Veloso, J. F. C. A., Villar, J. A., Webb, R. C., White, J. T., and Yahlali, N.

Subjects
Physics - Instrumentation and Detectors, Nuclear Experiment
Abstract

The Neutrino Experiment with a Xenon TPC (NEXT) is intended to investigate the neutrinoless double beta decay of 136Xe, which requires a severe suppression of potential backgrounds. An extensive screening and material selection process is underway for NEXT since the control of the radiopurity levels of the materials to be used in the experimental set-up is a must for rare event searches. First measurements based on Glow Discharge Mass Spectrometry and gamma-ray spectroscopy using ultra-low background germanium detectors at the Laboratorio Subterr\'aneo de Canfranc (Spain) are described here. Activity results for natural radioactive chains and other common radionuclides are summarized, being the values obtained for some materials like copper and stainless steel very competitive. The implications of these results for the NEXT experiment are also discussed., Comment: Final version

Published
2012
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32. Design and characterization of the SiPM tracking system of NEXT-DEMO, a demonstrator prototype of the NEXT-100 experiment

Author

NEXT Collaboration, Álvarez, V., Ball, M., Borges, F. I. G. M., Cárcel, S., Carmona, J. M., Castel, J., Catalá, J. M., Cebrián, S., Cervera, A., Chan, D., Conde, C. A. N., Dafni, T., Dias, T. H. V. T., Díaz, J., Egorov, M., Esteve, R., Evtoukhovitch, P., Fernandes, L. M. P., Ferrario, P., Ferreira, A. L., Ferrer-Ribas, E., Freitas, E. D. C., Garcia, A. N. C., Gehman, V. M., Gil, A., Giomataris, I., Goldschmidt, A., Gómez, H., Gómez-Cadenas, J. J., González, K., González-Díaz, D., Gutiérrez, R. M., Hauptman, J., Morata, J. A. Hernando, Herrera, D. C., Herrero, V., Iguaz, F. J., Irastorza, I. G., Kalinnikov, V., Kiang, D., Labarga, L., Liubarsky, I., Lopes, J. A. M., Lorca, D., Losada, M., Luzón, G., Marí, A., Martín-Albo, J., Martínez, A., Miller, T., Moiseenko, A., Monrabal, F., Monteiro, C. M. B., Monzó, J. M., Mora, F. J., Moutinho, L. M., Vidal, J. Muñoz, da Luz, H. Natal, Navarro, G., Nebot, M., Nygren, D., Oliveira, C. A. B., Palma, R., Pérez, J., Aparicio, J. L. Pérez, Renner, J., Ripoll, L., Rodríguez, A., Rodríguez, J., Santos, F. P., Santos, J. M. F. dos, Segui, L., Serra, L., Shuman, D., Sofka, C., Sorel, M., Toledo, J. F., Tomás, A., Torrent, J., Tsamalaidze, Z., Vázquez, D., Velicheva, E., Veloso, J. F. C. A., Villar, J. A., Webb, R. C., Weber, T., White, J., and Yahlali, N.

Subjects
Physics - Instrumentation and Detectors, High Energy Physics - Experiment
Abstract

NEXT-100 experiment aims at searching the neutrinoless double-beta decay of the Xe-136 isotope using a TPC filled with a 100 kg of high-pressure gaseous xenon, with 90% isotopic enrichment. The experiment will take place at the Laboratorio Subterr\'aneo de Canfranc (LSC), Spain. NEXT-100 uses electroluminescence (EL) technology for energy measurement with a resolution better than 1% FWHM. The gaseous xenon in the TPC additionally allows the tracks of the two beta particles to be recorded, which are expected to have a length of up to 30 cm at 10 bar pressure. The ability to record the topological signature of the neutrinoless double-beta events provides a powerful background rejection factor for the double-beta experiment. In this paper, we present a novel 3D imaging concept using SiPMs coated with tetraphenyl butadiene (TPB) for the EL read out and its first implementation in NEXT-DEMO, a large-scale prototype of the NEXT-100 experiment. The design and the first characterization measurements of the NEXT-DEMO SiPM tracking system are presented. The SiPM response uniformity over the tracking plane drawn from its gain map is shown to be better than 4%. An automated active control system for the stabilization of the SiPMs gain was developed, based on the voltage supply compensation of the gain drifts. The gain is shown to be stabilized within 0.2% relative variation around its nominal value, provided by Hamamatsu, in a temperature range of 10 degree C. The noise level from the electronics and the SiPM dark noise is shown to lay typically below the level of 10 photoelectrons (pe) in the ADC. Hence, a detection threshold at 10 pe is set for the acquisition of the tracking signals. The ADC full dynamic range (4096 channels) is shown to be adequate for signal levels of up to 200 pe/microsecond, which enables recording most of the tracking signals., Comment: Submitted to JINST

Published
2012

33. NEXT-100 Technical Design Report (TDR). Executive Summary

Author

NEXT Collaboration, Álvarez, V., Borges, F. I. G. M., Cárcel, S., Carmona, J. M., Castel, J., Catalá, J. M., Cebrián, S., Cervera, A., Chan, D., Conde, C. A. N., Dafni, T., Dias, T. H. V. T., Díaz, J., Egorov, M., Esteve, R., Evtoukhovitch, P., Fernandes, L. M. P., Ferrario, P., Ferreira, A. L., Ferrer-Ribas, E., Freitas, E. D. C., Gehman, V. M., Gil, A., Giomataris, I., Goldschmidt, A., Gómez, H., Gómez-Cadenas, J. J., González, K., González-Díaz, D., Gutiérrez, R. M., Hauptman, J., Morata, J. A. Hernando, Herrera, D. C., Herrero, V., Iguaz, F. J., Irastorza, I. G., Kalinnikov, V., Kiang, D., Labarga, L., Liubarsky, I., Lopes, J. A. M., Lorca, D., Losada, M., Luzón, G., Marí, A., Martín-Albo, J., Martínez, A., Miller, T., Moiseenko, A., Monrabal, F., Monteiro, C. M. B., Monzó, J. M., Mora, F. J., Moutinho, L. M., Vidal, J. Muñoz, da Luz, H. Natal, Navarro, G., Nebot, M., Nygren, D., Oliveira, C. A. B., Palma, R., Pérez, J., Aparicio, J. L. Pérez, Renner, J., Ripoll, L., Rodríguez, A., Rodríguez, J., Santos, F. P., Santos, J. M. F. dos, Segui, L., Serra, L., Shuman, D., Sofka, C., Sorel, M., Toledo, J. F., Tomás, A., Torrent, J., Tsamalaidze, Z., Vázquez, D., Velicheva, E., Veloso, J. F. C. A., Villar, J. A., Webb, R. C., Weber, T., White, J., and Yahlali, N.

Subjects
Physics - Instrumentation and Detectors, High Energy Physics - Experiment
Abstract

In this Technical Design Report (TDR) we describe the NEXT-100 detector that will search for neutrinoless double beta decay (bbonu) in Xe-136 at the Laboratorio Subterraneo de Canfranc (LSC), in Spain. The document formalizes the design presented in our Conceptual Design Report (CDR): an electroluminescence time projection chamber, with separate readout planes for calorimetry and tracking, located, respectively, behind cathode and anode. The detector is designed to hold a maximum of about 150 kg of xenon at 15 bar, or 100 kg at 10 bar. This option builds in the capability to increase the total isotope mass by 50% while keeping the operating pressure at a manageable level. The readout plane performing the energy measurement is composed of Hamamatsu R11410-10 photomultipliers, specially designed for operation in low-background, xenon-based detectors. Each individual PMT will be isolated from the gas by an individual, pressure resistant enclosure and will be coupled to the sensitive volume through a sapphire window. The tracking plane consists in an array of Hamamatsu S10362-11-050P MPPCs used as tracking pixels. They will be arranged in square boards holding 64 sensors (8 times8) with a 1-cm pitch. The inner walls of the TPC, the sapphire windows and the boards holding the MPPCs will be coated with tetraphenyl butadiene (TPB), a wavelength shifter, to improve the light collection., Comment: 32 pages, 22 figures, 5 tables

Published
2012
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34. SiPMs coated with TPB : coating protocol and characterization for NEXT

Author

Álvarez, V., Agramunt, J., Ball, M., Batallé, M., Bayarri, J., Borges, F. I. G., Bolink, H., Brine, H., Cárcel, S., Carmona, J. M., Castel, J., Catalá, J. M., Cebrián, S., Cervera, A., Chan, D., Conde, C. A. N., Dafni, T., Dias, T. H. V. T., Díaz, J., Esteve, R., Evtoukhovitch, P., Ferrando, J., Fernandes, L. M. P., Ferrario, P., Ferreira, A. L., Ferrer-Ribas, E., Freitas, E. D. C., García, S. A., Gil, A., Giomataris, I., Goldschmidt, A., Gómez, E., Gómez, H., Gómez-Cadenas, J. J., González, K., Gutiérrez, R. M., Hauptman, J., Hernando-Morata, J. A., Herrera, D. C., Herrero, V., Iguaz, F. J., Irastorza, I. G., Kalinnikov, V., Labarga, L., Liubarsky, I., Lopes, J. A. M., Lorca, D., Losada, M., Luzón, G., Marí, A., Martin-Albo, J., Méndez, A. M., Miller, T., Moisenko, A., Monrabal, F., Monteiro, C. M. B., Monzó, J. M., Mora, F. J., Vidal, J. Muñoz, da Luz, H. Natal, Navarro, G., Nebot, M., Nygren, D., Oliveira, C. A. B., Palma, R., Aparicio, J. L. Pérez, Pérez, J., Radicioni, E., Quinto, M., Renner, J., Ripoll, L., Rodriguez, A., Rodriguez, J., Santos, F. P., Santos, J. M. F. dos, Seguí, L., Serra, L., Shuman, D., Sofka, C., Sorel, M., Soriano, A., Spieler, H., Toledo, J. F., Collell, J. Torrent, Tomás, A., Tsamalaidze, Z., Vázquez, D., Velicheva, E., Veloso, J. F. C. A., Villar, J. A., Webb, R., Weber, T., White, J. T., and Yahlali, N.

Subjects
Physics - Instrumentation and Detectors, High Energy Physics - Experiment
Abstract

Silicon photomultipliers (SiPM) are the photon detectors chosen for the tracking readout in NEXT, a neutrinoless {\beta}{\beta} decay experiment which uses a high pressure gaseous xenon time projection chamber (TPC). The reconstruction of event track and topology in this gaseous detector is a key handle for background rejection. Among the commercially available sensors that can be used for tracking, SiPMs offer important advantages, mainly high gain, ruggedness, cost-effectiveness and radio-purity. Their main drawback, however, is their non sensitivity in the emission spectrum of the xenon scintillation (peak at 175 nm). This is overcome by coating these sensors with the organic wavelength shifter tetraphenyl butadienne (TPB). In this paper we describe the protocol developed for coating the SiPMs with TPB and the measurements performed for characterizing the coatings as well as the performance of the coated sensors in the UV-VUV range., Comment: Submitted to the Journal of Instrumentation on december 26th 2011

Published
2012
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36. The NEXT-100 experiment for neutrinoless double beta decay searches (Conceptual Design Report)

Author

NEXT Collaboration, Álvarez, V., Ball, M., Batallé, M., Bayarri, J., Borges, F. I. G., Cárcel, S., Carmona, J. M., Castel, J., Catalá, J. M., Cebrián, S., Cervera-Villanueva, A., Chan, D., Conde, C. A. N., Dafni, T., Dias, T. H. V. T., Díaz, J., Esteve, R., Evtoukhovitch, P., Fernandes, L. M. P., Ferrario, P., Ferrer-Ribas, E., Ferreira, A. L., Freitas, E. D. C., Gil, A., Giomataris, I., Goldschmidt, A., Gómez, E., Gómez, H., Gómez-Cadenas, J. J., Gónzález, K., Gutiérrez, R. M., Hernando-Morata, J. A., Herrera, D. C., Herrero, V., Iguaz, F., Irastorza, I. G., Kalinnikov, V., Kustov, A., Liubarsky, I., Lopes, J. A. M., Lorca, D., Losada, M., Luzón, G., Martín-Albo, J., Méndez, A., Miller, T., Moisenko, A., Mols, J. P., Monrabal, F., Monteiro, C. M. B., Monzó, J. M., Mora, F. J., Muñoz-Vidal, J., da Luz, H. Natal, Navarro, G., Nebot, M., Nygren, D., Oliveira, C. A. B., Palma, R., Pérez-Aparicio, J. L., Renner, J., Ripoll, L., Rodríguez, A., Rodríguez, J., Santos, F. P., Santos, J. M. F. dos, Seguí, L., Serra, L., Sofka, C., Sorel, M., Spieler, H., Toledo, J. F., Tomás, A., Tsamalaidze, Z., Vázquez, D., Velicheva, E., Veloso, J. F. C. A., Villar, J. A., Webb, R., Weber, T., White, J., and Yahlali, N.

Subjects
Physics - Instrumentation and Detectors, High Energy Physics - Experiment
Abstract

We propose an EASY (Electroluminescent ApparatuS of high Yield) and SOFT (Separated Optimized FuncTion) time-projection chamber for the NEXT experiment, that will search for neutrinoless double beta decay (bb0nu) in Xe-136. Our experiment must be competitive with the new generation of bb0nu searches already in operation or in construction. This requires a detector with very good energy resolution (<1%), very low background con- tamination (1E-4 counts/(keV \bullet kg \bullet y)) and large target mass. In addition, it needs to be operational as soon as possible. The design described here optimizes energy resolution thanks to the use of proportional electroluminescent amplification (EL); it is compact, as the Xe gas is under high pressure; and it allows the measurement of the topological signature of the event to further reduce the background contamination. The SOFT design uses different sensors for tracking and calorimetry. We propose the use of SiPMs (MPPCs) coated with a suitable wavelength shifter for the tracking, and the use of radiopure photomultipliers for the measurement of the energy and the primary scintillation needed to estimate the t0. This design provides the best possible energy resolution compared with other NEXT designs based on avalanche gain devices. The baseline design is an Asymmetric Neutrino Gas EL apparatus (ANGEL), which was already outlined in the NEXT LOI. ANGEL is conceived to be easy to fabricate. It requires very little R&D and most of the proposed solutions have already been tested in the NEXT-1 prototypes. Therefore, the detector can be ready by 2013. In this Conceptual Design Report (CDR) we discuss first the physics case, present a full design of the detector, describe the NEXT-1 EL prototypes and their initial results, and outline a project to build a detector with 100 kg of enriched xenon to be installed in the Canfranc Underground Laboratory in 2013.

Published
2011

37. Spectral characteristics of side face excited microstructured fibers for photonic integrated circuits formations

Author

Guryev, I. V., Vazquez, D. J., Sukhoivanov, I. A., Luna, C. H., Estudillo-Ayala, J. M., Lucio, J. A. Andrade, Chavez, R. M., Trejo-Durán, M., Mendez, E. Alvarado, and Rojas-Laguna, R.

Subjects
Physics - Optics
Abstract

We propose a new method for mass production of the photonic crystal devices on the basis of widely-known and well-developed technology such as microstructured optical fibers. In this paper, we investigate the optical properties of side-excited microstructured optical fiber and discuss the conditions for utilization such a structure as a planar photonic crystal device, namely, the high-quality resonance filter., Comment: 7 pages, 7 figures

Published
2010
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39. Predicting Global Irradiance Combining Forecasting Models Through Machine Learning

Author

Huertas-Tato, J., Aler, R., Rodríguez-Benítez, F. J., Arbizu-Barrena, C., Pozo-Vázquez, D., Galván, I. M., Hutchison, David, Series Editor, Kanade, Takeo, Series Editor, Kittler, Josef, Series Editor, Kleinberg, Jon M., Series Editor, Mattern, Friedemann, Series Editor, Mitchell, John C., Series Editor, Naor, Moni, Series Editor, Pandu Rangan, C., Series Editor, Steffen, Bernhard, Series Editor, Terzopoulos, Demetri, Series Editor, Tygar, Doug, Series Editor, Weikum, Gerhard, Series Editor, de Cos Juez, Francisco Javier, editor, Villar, José Ramón, editor, de la Cal, Enrique A., editor, Herrero, Álvaro, editor, Quintián, Héctor, editor, Sáez, José António, editor, and Corchado, Emilio, editor

Published
2018
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42. El arbitraje en el ámbito de la propiedad industrial. Una mirada desde el Centro de arbitraje de la OMPI

Author

Marta Moreno Cruz, Dánice Vazquez D´ Alvaré, Liudmila Morán Martínez, and Alina Escobar Domínguez

Subjects
Propiedad industrial, Arbitraje, OMPI, Marcas, Nombres de dominio, Law in general. Comparative and uniform law. Jurisprudence, K1-7720
Abstract

El presente trabajo aborda los medios alternativos de solución de conflictos en el área de la propiedad industrial y las ventajas que estos ofrecen. En este artículo se focaliza la mirada hacia el Centro de Arbitraje y Mediación de la OMPI. Se analizan el Reglamento de Arbitraje, el Reglamento de Arbitraje Acelerado, el Reglamento de Mediación y el Reglamento de Decisión de Experto de la OMPI. Asimismo, se exponen dos casos resueltos por el Centro de la OMPI vinculados a empresas cubanas.

Published
2020
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43. Elevated lipoprotein a level in heart transplant patients is associated with cardiac allograft vasculopathy

Author

Enriquez Vazquez, D, primary, Barge-Caballero, E, additional, Domenech-Garcia, N, additional, Rodriguez-Vazquez, P, additional, Formoso-Lavandeira, M D, additional, Barge-Caballero, G, additional, Couto-Mallon, D, additional, Paniagua-Martin, M J, additional, Blanco-Canosa, P, additional, Grille-Cancela, Z, additional, Lopez-Canoa, J N, additional, Lopez-Vazquez, P, additional, Vazquez-Rodriguez, J M, additional, and Crespo-Leiro, M G, additional

Published
2023
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