7 results on '"Francesc Ferrer"'
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2. Erratum: VERITAS deep observations of the dwarf spheroidal galaxy Segue 1 [Phys. Rev. D85, 062001 (2012)]
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M. P. Connolly, D. Staszak, K. Ragan, R. Dickherber, S. Thibadeau, L. Ciupik, A. Varlotta, H. J. Rose, D. S. Hanna, T. C. Arlen, P. Kaaret, D. B. Saxon, E. Collins-Hughes, G. H. Sembroski, G. Hughes, Matthias Beilicke, A. McCann, A. Cesarini, M. Vivier, John L. Quinn, Francesc Ferrer, S. Archambault, Reshmi Mukherjee, K. Tsurusaki, Gernot Maier, Nahee Park, S. P. Wakely, C. Skole, A. Bouvier, Geza Gyuk, J. E. Ward, R. A. Ong, Thomas Weisgarber, Daniel Gall, E. Aliu, Matthew R. Orr, David Kieda, K. L. Byrum, Jodi Christiansen, J. S. Perkins, S. M. Bradbury, G. Tešić, David A. Williams, Lucy Fortson, A. Cannon, Pratik Majumdar, V. V. Vassiliev, T. Aune, I. Telezhinsky, Jamie Holder, S. Godambe, J. P. Dumm, J. Ruppel, Q. Feng, L. C. Reyes, Henric Krawczynski, Amy Furniss, A. J.R. Weinstein, T. B. Humensky, M. Schroedter, Wei Cui, S. McArthur, V. Bugaev, Wystan Benbow, F. Krennrich, G. Finnegan, A. W. Smith, M. Theiling, A. S Madhavan, A. D. Falcone, E. Roache, G. D. Şentürk, H. Huan, J. H. Buckley, P. Moriarty, Nicola Galante, J. Grube, R. G. Wagner, N. Karlsson, Sinéad M. Griffin, Y. Khassen, G. Decerprit, S. Vincent, M. Kertzman, A. N. Otte, P. T. Reynolds, B. Zitzer, Manel Errando, J. P. Finley, T. C. Weekes, M. Pohl, K. Lee, and H. Prokoph
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Physics ,Gravitation ,Nuclear and High Energy Physics ,Dark matter ,Gamma ray ,Astronomy ,Astrophysics ,Segue ,Cosmology ,Dwarf galaxy ,Dwarf spheroidal galaxy - Published
- 2015
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3. Scientific reach of multiton-scale dark matter direct detection experiments
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James B. Dent, Francesc Ferrer, Thomas Jacques, Jayden L. Newstead, and Lawrence M. Krauss
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Physics ,Nuclear and High Energy Physics ,Particle physics ,Cosmology and Nongalactic Astrophysics (astro-ph.CO) ,Hot dark matter ,Dark matter ,Massive particle ,Scalar field dark matter ,FOS: Physical sciences ,High Energy Physics - Experiment ,High Energy Physics - Phenomenology ,High Energy Physics - Experiment (hep-ex) ,High Energy Physics - Phenomenology (hep-ph) ,Isospin ,Weakly interacting massive particles ,Warm dark matter ,Light dark matter ,Astrophysics - Cosmology and Nongalactic Astrophysics - Abstract
The next generation of large scale WIMP direct detection experiments have the potential to go beyond the discovery phase and reveal detailed information about both the particle physics and astrophysics of dark matter. We report here on early results arising from the development of a detailed numerical code modeling the proposed DARWIN detector, involving both liquid argon and xenon targets. We incorporate realistic detector physics, particle physics and astrophysical uncertainties and demonstrate to what extent two targets with similar sensitivities can remove various degeneracies and allow a determination of dark matter cross sections and masses while also probing rough aspects of the dark matter phase space distribution. We find that, even assuming dominance of spin-independent scattering, multi-ton scale experiments still have degeneracies that depend sensitively on the dark matter mass, and on the possibility of isospin violation and inelasticity in interactions. We find that these experiments are best able to discriminate dark matter properties for dark matter masses less than around 200 GeV. In addition, and somewhat surprisingly, the use of two targets gives only a small improvement (aside from the advantage of different systematics associated with any claimed signal) in the ability to pin down dark matter parameters when compared with one target of larger exposure., Comment: 23 pages; updated to match PRD version
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- 2013
- Full Text
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4. Limit on the diffuse flux of ultrahigh energy tau neutrinos with the surface detector of the Pierre Auger Observatory
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D. Melo, M. Videla, A. F. Barbosa, M. Ave, I. Torres, J. Matthews, L. Caramete, D. Pakk Selmi-Dei, R. Sato, Tonia M. Venters, B. Connolly, R. E. Burton, Eun-Joo Ahn, C. E. Fracchiolla, G. Farrar, R. R. McNeil, B. Rouillé-D’Orfeuil, Ivor Fleck, C. Morello, W. Fulgione, Fabrizio Ortolani, Peter L. Biermann, M. Kaducak, Paolo Privitera, Jose Chinellato, Pedro Brogueira, G. Yuan, Matias Tueros, H. Dembinski, J. L. Navarro, Daniel Gonzalez, A. Schmidt, Ofelia Pisanti, Christopher Morris, Dariusz Gora, M. Gold, T. Suomijärvi, J. Pallotta, E. J. Quel, A. Tonachini, R. M. de Almeida, B. J. Whelan, D. Maurizio, J. C. Diaz, Markus Risse, U. Cotti, A. Letessier-Selvon, Lorenzo Cazon, Jaime Alvarez-Muñiz, D. Schuster, M. Gonçalves do Amaral, L. Nožka, R. Ticona, J. Pochon, C. Aramo, Pham Ngoc Diep, Paulo J. S. Gonçalves, B. Wilczynska, F. Sánchez, Iván Sidelnik, H. Wilczyński, E. Strazzeri, G. Hebrero, Heino Falcke, I. Valiño, S. Grebe, S. Navas, M.E. Ortiz, G. Wieczorek, J. G. Gonzalez, J. Knapp, A. Lopez Agüera, R. Bruijn, A. Krieger, M. Melissas, B. Wundheiler, A. Gorgi, Y. Guardincerri, H. Wu, B. Keilhauer, H. Spinka, R. Squartini, G. Tristram, B. L. Lago, R. Mussa, C. Aguirre, Alberto Filevich, Maria-Teresa Dova, T. Paul, R. A. Vázquez, Marco Iarlori, T. Schmidt, S. Reucroft, Esteban Roulet, Peter Hansen, Olivier Deligny, A. Filipčič, D. B. Tridapalli, J. Allen, A. Criss, S. J. Sciutto, R. Pesce, F. Guarino, Peter Buchholz, M. Pontz, B. Tome, V. Van Elewyck, D. D'Urso, J. J. Beatty, Corinne Berat, M. Giller, A. Della Selva, F. Sarazin, J. Coppens, E. Menichetti, John G. Lee, S. J. De Jong, E. Parizot, C. E. Santo, Ralf Ulrich, H. Glass, P. T. Nhung, A. Ferrero, N. Pacheco, N. Fazzini, S. Petrera, Marco Aglietta, Antonio Velarde, G. P. Guedes, F. Arneodo, D. Allard, G. Medina-Tanco, W. Tkaczyk, M. McEwen, Pierre Billoir, D. Thomas, S. Jiraskova, B. M. Baughman, D. Nitz, A. C. Fauth, M. C. Maccarone, Ioana Codrina Maris, B. Revenu, A. Curutiu, Rodrigo Pelayo, S. Coutu, D. Nosek, C. Bonifazi, A. Lemiere, D. Dornic, A. Chiavassa, K. B. Barber, L. del Peral, Jose A. Bellido, B. R. Becker, A. Chou, E. Trovato, A. F. Grillo, E. Colombo, Julien Aublin, Juan Carlos D'Olivo, T. Pierog, O. Blanch-Bigas, M. Palatka, D. Harari, Matthias Leuthold, P. W. Younk, B. E. Smith, Ralph Engel, L. R. Wiencke, R. Meyhandan, W. J. M. de Mello Junior, D. H. Koang, E. Petermann, Bruce Rafael Mellado Garcia, Jaime Rosado, D. García Gámez, Miroslav Pech, S. Riggi, S. Westerhoff, J. Ridky, J. Rodriguez Martino, J. Petrovic, Osvaldo Catalano, A. Menshikov, Dusan Mandat, R. Cester, E. M. Santos, Tristan Beau, A. Stutz, J. Schovancova, S. Gambetta, Michael Urban, Piera Luisa Ghia, Subir Sarkar, C. Lachaud, Alexander Kusenko, V. Verzi, M. Patel, J. Pȩkala, B. Morales, T. Asch, M. S. Sutherland, L. Perrone, J. Chauvin, A. Segreto, Bruce R. Dawson, Tim Huege, P.O. Mazur, German Ros, A. Tamburro, O. Taşcǎu, J. R. T. de Mello Neto, N. Scharf, Hernan Wahlberg, Daniel Omar Badagnani, F. Salamida, A. Bellétoile, S. Mueller, G. Matthiae, Antonio Bueno, R. Piegaia, A. Smialkowski, Radomir Smida, Miroslav Hrabovský, T. Karova, Francesc Ferrer, Sofia Andringa, J. D. Swain, A. Haungs, E. D. Fraenkel, C. Delle Fratte, E. Kemp, Serguei Vorobiov, Sergio Pastor, A. Tamashiro, M. Ambrosio, A. Petrolini, M. Zavrtanik, N. Nierstenhoefer, M. Monasor, G. Rodriguez, M. G. Winnick, D. Monnier Ragaigne, S. Harmsma, V. M. Olmos-Gilbaja, Marcos Santander, J. L. Harton, L. Villaseñor, C. Pfendner, M. Prouza, A. Anzalone, Gualberto Avila, V. de Souza, P. Bauleo, A. Insolia, M. Kleifges, D. Zavrtanik, P. Mantsch, F. A. S. Rezende, Z. Szadkowski, I. Allekotte, P. Abreu, G. De La Vega, A. Horneffer, P. Petrinca, Angela V. Olinto, D. Tcherniakhovski, D. Ravignani, H. Schoorlemmer, J. Rodriguez Rojo, K. Arisaka, C. Macolino, J. Oehlschläger, Enrique Zas, A. Dorofeev, C. Di Giulio, A. C. Rovero, C. Bleve, Fernando Contreras, J. Abraham, C. J. Todero Peixoto, Vincenzo Rizi, Carola Dobrigkeit, R. F. Gamarra, D. Martello, U. Giaccari, M. Ziolkowski, P. Wahrlich, Silvia Mollerach, O. Martínez Bravo, V. Tuci, Alan Watson, Balázs Kégl, A. D. Supanitsky, F. Ionita, M. Platino, Petr Schovanek, Francisco J. Blanco, F. Gomez Albarracin, V. Scherini, J. Chye, J. W. Cronin, D. Kruppke, Marcio Aparecido Muller, G. Golup, N. Kunka, José Eduardo Martinez, J. A.J. Matthews, Xavier Bertou, R. Knapik, Pedro Assis, A. Etchegoyen, Javier Tiffenberg, Luis A. Anchordoqui, M. D. Healy, Petr Travnicek, A. Italiano, Graciela B. Gelmini, J. Lozano Bahilo, Segev BenZvi, J. Kleinfeller, Mariangela Settimo, Martina Bohacova, Patrick Allison, J. Sorokin, A. G. Mariazzi, Corbin Covault, Daniel Kuempel, Y. Petrov, C. Robledo, H. Blümer, Carlos Escobar, A. Creusot, S. Fliescher, Rossella Caruso, A. Lucero, G. La Rosa, Paul Sommers, Jörg R. Hörandel, Piotr Homola, P. Facal San Luis, A. Cordier, S. Maldera, I. Lhenry-Yvon, Lino Miramonti, V. C. Holmes, D. Lebrun, Warner A. Miller, I. Dutan, P. Gouffon, P. N. Dong, O. Krömer, M. D. Rodríguez-Frías, J. D. Hague, L. Valore, Mario Scuderi, N. T. Thao, D. Warner, M. De Domenico, P. Lebrun, R. López, Karen S. Caballero-Mora, J. Gutiérrez, Charles Timmermans, Martin Erdmann, Lisa M. Goggin, I. Zaw, Roger W Clay, T. Bäcker, V. H. Ponce, K.-H. Becker, M. Pimenta, R. Luna García, Jiri Chudoba, Nicolás G. Busca, M. I. Micheletti, Gaetano Salina, C. Riviere, F. Suarez, Thomas Hebbeker, G. Parente, A.M. van den Berg, K. Payet, Darko Veberič, V. Halenka, N. Smetniansky De Grande, H. R. Marquez Falcon, F. Arqueros, C. Wileman, P. Necesal, V. Pirronello, Arnulfo Zepeda, G. Decerprit, Miguel Mostafá, Iuri Muniz Pepe, S. Dagoret-Campagne, R. Bonino, Rúben Conceição, Beatriz B. Siffert, P. Schiffer, P. Bernardini, A. Pichel, Hernán Gonzalo Asorey, C. Hojvat, S. Parlati, S. Schulte, Jeffrey Brack, Olaf Scholten, Humberto Ibarguen Salazar, H. Schieler, Karl-Heinz Kampert, Antonella Castellina, H.O. Klages, D. Newton, C. De Donato, G. Navarra, F. Schüssler, S. L.C. Barroso, Brian Fick, Hermann-Josef Mathes, H. Gemmeke, Wagner Carvalho, A. Redondo, D.V. Semikoz, Kai Daumiller, M. Grigat, M. Unger, M. Hussain, Fabian Schmidt, Markus Roth, T. Tarutina, M. Gómez Berisso, R. C. Shellard, Lukas Nellen, I. Rodriguez-Cabo, J. F. Valdés Galicia, X. Garrido, I. De Mitri, Dieter Heck, M. A. Leigui de Oliveira, R. Tcaciuc, F. Schroeder, F. Montanet, J. C. dos Anjos, Michael DuVernois, L. Voyvodic, D. Garcia-Pinto, T. Pinto, Gregory R Snow, P. H. Kasper, M. S. A. B. Leão, Vasiliki Pavlidou, R. M. Kieckhafer, Juan Moreno, J. Rautenberg, O. Wainberg, Stefano Argiro, Catherine Newman-Holmes, W. C. Brown, Gennaro Miele, APC - Astrophysique des Hautes Energies (APC - AHE), AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Alma Mater Studiorum Università di Bologna [Bologna] (UNIBO), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-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), Institut de Physique Nucléaire d'Orsay (IPNO), Laboratoire SUBATECH Nantes (SUBATECH), Mines Nantes (Mines Nantes)-Université de Nantes (UN)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), APC - THEORIE, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut für theoretische Physik, Universität Hamburg (UHH)-Universität Hamburg (UHH), PIERRE AUGER, Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Dipartimento di Astronomia, Universita degli Studi di Bologna, Alma Mater Studiorum Università di Bologna [Bologna] (UNIBO)-Alma Mater Studiorum Università di Bologna [Bologna] (UNIBO), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), 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), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Nantes (UN)-Mines Nantes (Mines Nantes), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut für theoretische Physik, J., Abraham, P., Abreu, M., Aglietta, C., Aguirre, E. J., Ahn, D., Allard, I., Allekotte, J., Allen, P., Allison, J., Alvarez Muniz, M., Ambrosio, L., Anchordoqui, S., Andringa, A., Anzalone, C., Aramo, S., Argiro, K., Arisaka, F., Arneodo, F., Arquero, T., Asch, H., Asorey, P., Assi, J., Aublin, M., Ave, G., Avila, T., Backer, D., Badagnani, K. B., Barber, A. F., Barbosa, S. L. C., Barroso, B., Baughman, P., Bauleo, J. J., Beatty, T., Beau, B. R., Becker, K. H., Becker, A., Belletoile, J. A., Bellido, S., Benzvi, C., Berat, Bernardini, Paolo, X., Bertou, P. L., Biermann, P., Billoir, O., Blanch Biga, F., Blanco, C., Bleve, H., Blumer, M., Bohacova, C., Bonifazi, R., Bonino, J., Brack, P., Brogueira, W. C., Brown, R., Bruijn, P., Buchholz, A., Bueno, R. E., Burton, N. G., Busca, K. S., Caballero Mora, L., Caramete, R., Caruso, W., Carvalho, A., Castellina, O., Catalano, L., Cazon, R., Cester, J., Chauvin, A., Chiavassa, J. A., Chinellato, A., Chou, J., Chudoba, J., Chye, R. W., Clay, E., Colombo, R., Conceicao, B., Connolly, F., Contrera, J., Coppen, A., Cordier, U., Cotti, S., Coutu, C. E., Covault, A., Creusot, A., Cri, J., Cronin, A., Curutiu, S., Dagoret Campagne, K., Daumiller, B. R., Dawson, R. M., de Almeida, M., De Domenico, C., De Donato, S. J., de Jong, G., De La Vega, W. J. M., de Mello Junior, J. R. T., de Mello Neto, DE MITRI, Ivan, V., de Souza, G., Decerprit, L., del Peral, O., Deligny, A., Della Selva, C., Delle Fratte, H., Dembinski, C., Di Giulio, J. C., Diaz, P. N., Diep, C., Dobrigkeit, J. C., D’Olivo, P. N., Dong, D., Dornic, A., Dorofeev, J. C., dos Anjo, M. T., Dova, D., D’Urso, I., Dutan, M. A., Duvernoi, R., Engel, M., Erdmann, C. O., Escobar, A., Etchegoyen, P., Facal San Lui, H., Falcke, G., Farrar, A. C., Fauth, N., Fazzini, F., Ferrer, A., Ferrero, B., Fick, A., Filevich, A., Filipcic, I., Fleck, S., Fliescher, C. E., Fracchiolla, E. D., Fraenkel, W., Fulgione, R. F., Gamarra, 2 S., Gambetta, B., Garcıa, D., Garcıa Gamez, D., Garcia Pinto, X., Garrido, G., Gelmini, H., Gemmeke, P. L., Ghia, U., Giaccari, M., Giller, H., Gla, L. M., Goggin, M. S., Gold, G., Golup, F., Gomez Albarracin, M., Gomez Berisso, P., Goncalve, M., Goncalves do Amaral, D., Gonzalez, J. G., Gonzalez, D., Gora, A., Gorgi, P., Gouffon, S., Grebe, M., Grigat, A. F., Grillo, Y., Guardincerri, F., Guarino, G. P., Guede, J., Gutierrez, J. D., Hague, V., Halenka, P., Hansen, D., Harari, S., Harmsma, J. L., Harton, A., Haung, M. D., Healy, T., Hebbeker, G., Hebrero, D., Heck, C., Hojvat, V. C., Holme, P., Homola, J. R., Horandel, A., Horneffer, M., Hrabovsky, T., Huege, M., Hussain, M., Iarlori, A., Insolia, F., Ionita, A., Italiano, S., Jiraskova, M., Kaducak, K. H., Kampert, T., Karova, P., Kasper, B., Kegl, B., Keilhauer, E., Kemp, R. M., Kieckhafer, H. O., Klage, M., Kleifge, J., Kleinfeller, R., Knapik, J., Knapp, D. H., Koang, A., Krieger, O., Kromer, D., Kruppke, D., Kuempel, N., Kunka, A., Kusenko, G., La Rosa, C., Lachaud, B. L., Lago, M. S. A. B., Leao, D., Lebrun, P., Lebrun, J., Lee, M. A., Leigui de Oliveira, A., Lemiere, A., Letessier Selvon, M., Leuthold, I., Lhenry Yvon, R., Lopez, A., Lopez Aguera, J., Lozano Bahilo, A., Lucero, R., Luna Garcıa, M. C., Maccarone, C., Macolino, S., Maldera, D., Mandat, P., Mantsch, A. G., Mariazzi, I. C., Mari, H. R., Marquez Falcon, Martello, Daniele, J., Martınez, O., Martinez Bravo, H. J., Mathe, J., Matthew, J. A. J., Matthew, G., Matthiae, D., Maurizio, P. O., Mazur, M., Mcewen, R. R., Mcneil, G., Medina Tanco, M., Melissa, D., Melo, E., Menichetti, A., Menshikov, R., Meyhandan, M. I., Micheletti, G., Miele, W., Miller, L., Miramonti, S., Mollerach, M., Monasor, D., Monnier Ragaigne, F., Montanet, B., Morale, C., Morello, J. C., Moreno, C., Morri, M., Mostafa, S., Mueller, M. A., Muller, R., Mussa, G., Navarra, J. L., Navarro, S., Nava, P., Necesal, L., Nellen, C., Newman Holme, D., Newton, P. T., Nhung, N., Nierstenhoefer, D., Nitz, D., Nosek, L., Nozka, J., Oehlschlager, A., Olinto, V. M., Olmos Gilbaja, M., Ortiz, F., Ortolani, N., Pacheco, D., Pakk Selmi Dei, M., Palatka, J., Pallotta, G., Parente, E., Parizot, S., Parlati, S., Pastor, M., Patel, T., Paul, V., Pavlidou, K., Payet, M., Pech, J., Pekala, R., Pelayo, I. M., Pepe, Perrone, Lorenzo, R., Pesce, E., Petermann, S., Petrera, P., Petrinca, A., Petrolini, Y., Petrov, J., Petrovic, C., Pfendner, A., Pichel, R., Piegaia, T., Pierog, M., Pimenta, T., Pinto, V., Pirronello, O., Pisanti, M., Platino, J., Pochon, V. H., Ponce, M., Pontz, P., Privitera, M., Prouza, E. J., Quel, J., Rautenberg, D., Ravignani, A., Redondo, S., Reucroft, B., Revenu, F. A. S., Rezende, J., Ridky, S., Riggi, M., Risse, C., Riviere, V., Rizi, C., Robledo, G., Rodriguez, J., Rodriguez Martino, J., Rodriguez Rojo, I., Rodriguez Cabo, M. D., Rodrıguez Frıa, G., Ro, J., Rosado, M., Roth, B., Rouille d’Orfeuil, E., Roulet, A. C., Rovero, F., Salamida, H., Salazar, G., Salina, F., Sanchez, M., Santander, C. E., Santo, E. M., Santo, F., Sarazin, S., Sarkar, R., Sato, N., Scharf, V., Scherini, H., Schieler, P., Schiffer, A., Schmidt, F., Schmidt, T., Schmidt, O., Scholten, H., Schoorlemmer, J., Schovancova, P., Schovanek, F., Schroeder, S., Schulte, F., Schussler, D., Schuster, S. J., Sciutto, M., Scuderi, A., Segreto, D., Semikoz, M., Settimo, R. C., Shellard, I., Sidelnik, B. B., Siffert, N., Smetniansky De Grande, A., Smiałkowski, R., Smıda, B. E., Smith, G. R., Snow, P., Sommer, J., Sorokin, H., Spinka, R., Squartini, E., Strazzeri, A., Stutz, F., Suarez, T., Suomijarvi, A. D., Supanitsky, M. S., Sutherland, J., Swain, Z., Szadkowski, A., Tamashiro, A., Tamburro, T., Tarutina, O., Tascau, R., Tcaciuc, D., Tcherniakhovski, N. T., Thao, D., Thoma, R., Ticona, J., Tiffenberg, C., Timmerman, W., Tkaczyk, C. J., Todero Peixoto, B., Tome, A., Tonachini, I., Torre, P., Travnicek, D. B., Tridapalli, G., Tristram, E., Trovato, V., Tuci, M., Tuero, R., Ulrich, M., Unger, M., Urban, J. F., Valdes Galicia, I., Valino, L., Valore, A. M., van den Berg, V., van Elewyck, R. A., Vazquez, D., Veberic, A., Velarde, T., Venter, V., Verzi, M., Videla, L., Villasenor, S., Vorobiov, L., Voyvodic, H., Wahlberg, P., Wahrlich, O., Wainberg, D., Warner, A. A., Watson, S., Westerhoff, B. J., Whelan, G., Wieczorek, L., Wiencke, B., Wilczynska, H., Wilczynski, C., Wileman, M. G., Winnick, H., Wu, B., Wundheiler, P., Younk, G., Yuan, E., Za, D., Zavrtanik, M., Zavrtanik, I., Zaw, A., Zepeda, M., Ziolkowsk, KVI - Center for Advanced Radiation Technology, Research unit Astroparticle Physics, Guarino, Fausto, D'Urso, Domenico, Aramo, Carla, DELLA SELVA, Angelo, Miele, Gennaro, Pisanti, Ofelia, Valore, Laura, The Pierre Auger, Collaboration, Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Dipartimento di Astronomia, Universita degli Studi di Bologna, Università di Bologna [Bologna] (UNIBO)-Università di Bologna [Bologna] (UNIBO), PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), and PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Institut für theoretische Physik
- Subjects
ACTIVE GALACTIC NUCLEI ,ASTROPHYSICS ,[PHYS.ASTR.HE]Physics [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE] ,Nuclear and High Energy Physics ,Active galactic nucleus ,Physics::Instrumentation and Detectors ,Astrophysics::High Energy Astrophysical Phenomena ,FOS: Physical sciences ,Cosmic ray ,PROPAGATION ,Astrophysics ,7. Clean energy ,01 natural sciences ,Lepton ,Spectral line ,Settore FIS/04 - Fisica Nucleare e Subnucleare ,Auger ,SEARCH ,Tau neutrino ,0103 physical sciences ,OSCILLATIONS ,010306 general physics ,Ciencias Exactas ,High Energy Astrophysical Phenomena (astro-ph.HE) ,AIR-SHOWERS ,Pierre Auger Observatory ,Physics ,SPECTRUM ,010308 nuclear & particles physics ,[SDU.ASTR.HE]Sciences of the Universe [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE] ,Astrophysics::Instrumentation and Methods for Astrophysics ,Física ,ultrahigh energy cosmic rays ,tau neutrinos ,Diffuse flux ,PERFORMANCE ,COSMIC-RAYS ,cosmic radiation ,13. Climate action ,TELESCOPES ,High Energy Physics::Experiment ,Neutrino ,Astrophysics - High Energy Astrophysical Phenomena - Abstract
Data collected at the Pierre Auger Observatory are used to establish an upper limit on the diffuse flux of tau neutrinos in the cosmic radiation. Earth-skimming ντ may interact in the Earth's crust and produce a τ lepton by means of charged-current interactions. The τ lepton may emerge from the Earth and decay in the atmosphere to produce a nearly horizontal shower with a typical signature, a persistent electromagnetic component even at very large atmospheric depths. The search procedure to select events induced by τ decays against the background of normal showers induced by cosmic rays is described. The method used to compute the exposure for a detector continuously growing with time is detailed. Systematic uncertainties in the exposure from the detector, the analysis, and the involved physics are discussed. No τ neutrino candidates have been found. For neutrinos in the energy range 2 × 10¹⁷ eV < Eν < 2 × 10¹⁹ eV, assuming a diffuse spectrum of the form E⁻²ν, data collected between 1 January 2004 and 30 April 2008 yield a 90% confidence-level upper limit of E²νdNντ / dEν < 9 × 10⁻⁸ GeV cm⁻² s⁻¹ sr⁻¹., La lista completa de autores que integran el documento puede consultarse en el archivo., Facultad de Ciencias Exactas, Instituto de Física La Plata
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- 2009
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- View/download PDF
5. Indirect detection of light neutralino dark matter in the next-to-minimal supersymmetric standard model
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Francesc Ferrer, Stefano Profumo, and Lawrence M. Krauss
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Physics ,Nuclear and High Energy Physics ,Particle physics ,Astrophysics::High Energy Astrophysical Phenomena ,High Energy Physics::Phenomenology ,Dark matter ,Supersymmetry ,Higgs sector ,Next-to-Minimal Supersymmetric Standard Model ,Nuclear physics ,Neutralino ,Higgs boson ,High Energy Physics::Experiment ,Neutrino ,Caltech Library Services ,Minimal Supersymmetric Standard Model - Abstract
We explore the prospects for indirect detection of neutralino dark matter in supersymmetric models with an extended Higgs sector (next-to-minimal supersymmetric standard model, or NMSSM). We compute, for the first time, one-loop amplitudes for NMSSM neutralino pair annihilation into two photons and two gluons, and point out that extra diagrams (with respect to the minimal supersymmetric standard model, or MSSM), featuring a potentially light CP-odd Higgs boson exchange, can strongly enhance these radiative modes. Expected signals in neutrino telescopes due to the annihilation of relic neutralinos in the Sun and in the Earth are evaluated, as well as the prospects of detection of a neutralino annihilation signal in space-based gamma-ray, antiproton and positron search experiments, and at low-energy antideuteron searches. We find that in the low mass regime the signals from capture in the Earth are enhanced compared to the MSSM, and that NMSSM neutralinos have a remote possibility of affecting solar dynamics. Also, antimatter experiments are an excellent probe of galactic NMSSM dark matter. We also find enhanced two-photon decay modes that make the possibility of the detection of a monochromatic gamma-ray line within the NMSSM more promising than in the MSSM, although likely below the sensitivity of next generation gamma-ray telescopes.
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- 2006
- Full Text
- View/download PDF
6. Zero modes on cosmic strings in an external magnetic field
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Tanmay Vachaspati, Harsh Mathur, Glenn D. Starkman, and Francesc Ferrer
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High Energy Physics - Theory ,Superconductivity ,Physics ,Nuclear and High Energy Physics ,Condensed matter physics ,Astrophysics (astro-ph) ,FOS: Physical sciences ,Fermion ,Astrophysics ,Threshold energy ,Omega ,Magnetic field ,Condensed Matter - Other Condensed Matter ,symbols.namesake ,High Energy Physics - Theory (hep-th) ,Dirac equation ,Quantum mechanics ,Dispersion relation ,symbols ,Charge carrier ,Other Condensed Matter (cond-mat.other) - Abstract
A classical analysis suggests that an external magnetic field can cause trajectories of charge carriers on a superconducting domain wall or cosmic string to bend, thus expelling charge carriers with energy above the mass threshold into the bulk. We study this process by solving the Dirac equation for a fermion of mass $m_f$ and charge $e$, in the background of a domain wall and a magnetic field of strength $B$. We find that the modes of the charge carriers get shifted into the bulk, in agreement with classical expectations. However the dispersion relation for the zero modes changes dramatically -- instead of the usual linear dispersion relation, $\omega_k =k$, the new dispersion relation is well fit by $\omega \approx m_f tanh(k/k_*)$ where $k_*=m_f$ for a thin wall in the weak field limit, and $k_*=eBw$ for a thick wall of width $w$. This result shows that the energy of the charge carriers on the domain wall remains below the threshold for expulsion even in the presence of an external magnetic field. If charge carriers are expelled due to an additional perturbation, they are most likely to be ejected at the threshold energy $\sim m_f$., Comment: 9 pages, 4 figures
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- 2006
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7. A travel guide to the dark matter annihilation signal
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Nick Evans, Francesc Ferrer, and Subir Sarkar
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Physics ,Nuclear and High Energy Physics ,Annihilation ,Astrophysics::High Energy Astrophysical Phenomena ,Milky Way ,Dwarf galaxy problem ,Dark matter ,Velocity dispersion ,Astronomy ,Astrophysics::Cosmology and Extragalactic Astrophysics ,Astrophysics ,Galaxy ,Dark matter halo ,Light dark matter ,Astrophysics::Galaxy Astrophysics - Abstract
We provide a ``Baedecker'' or travel guide to the directions on the sky where the dark matter annihilation signal may be expected. We calculate the flux of high energy gamma-rays from annihilation of neutralino dark matter in the centre of the Milky Way and the three nearest dwarf spheroidals (Sagittarius, Draco and Canis Major), using realistic models of the dark matter distribution. Other investigators have used cusped dark halo profiles (such as the Navarro-Frenk-White) to claim a significant signal. This ignores the substantial astrophysical evidence that the Milky Way is not dark-matter dominated in the inner regions. We show that the annihilation signal from the Galactic Centre falls by two orders of magnitude on substituting a cored dark matter density profile for a cusped one. The present and future generation of high energy gamma-ray detectors, whether atmospheric Cerenkov telescopes or space missions like GLAST, lack the sensitivity to detect any of the monochromatic gamma-ray annihilation lines. The continuum gamma-ray signal above 1 GeV and above 50 GeV may however be detectable either from the dwarf spheroidals or from the Milky Way itself. If the density profiles of the dwarf spheroidals are cusped, then the best prospects are for detecting Sagittarius and Canis Major. However, if the dwarf spheroidals have milder, cored profiles, then the annihilation signal is not detectable. For GLAST, an attractive strategy is to exploit the wide field of view and observe the Milky Way at medium latitudes, as suggested by Stoehr et al. This is reasonably robust against changes in the density profile.
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- 2004
- Full Text
- View/download PDF
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