CTA Contributions to the 34th International Cosmic Ray Conference (ICRC2015)

(2015)

Authors:

The CTA Consortium, :, A Abchiche, U Abeysekara, Ó Abril, F Acero, BS Acharya, M Actis, G Agnetta, JA Aguilar, F Aharonian, A Akhperjanian, A Albert, M Alcubierre, R Alfaro, E Aliu, AJ Allafort, D Allan, I Allekotte, R Aloisio, J-P Amans, E Amato, L Ambrogi, G Ambrosi, M Ambrosio, J Anderson, M Anduze, EO Angüner, E Antolini, LA Antonelli, M Antonucci, V Antonuccio, P Antoranz, C Aramo, A Aravantinos, A Argan, T Armstrong, H Arnaldi, L Arnold, L Arrabito, M Arrieta, M Arrieta, K Asano, HG Asorey, T Aune, CB Singh, A Babic, M Backes, A Bais, S Bajtlik, C Balazs, M Balbo, D Balis, C Balkowski, O Ballester, J Ballet, A Balzer, A Bamba, R Bandiera, A Barber, C Barbier, M Barceló, A Barnacka, U Barres de Almeida, JA Barrio, S Basso, D Bastieri, C Bauer, A Baushev, U Becciani, Y Becherini, J Becker Tjus, V Beckmann, W Bednarek, W Benbow, D Benedico Ventura, J Berdugo, D Berge, E Bernardini, S Bernhard, K Bernlöhr, B Bertucci, M-A Besel, N Bhatt, P Bhattacharjee, S Bhattachryya, B Biasuzzi, G Bicknell, C Bigongiari, A Biland, S Billotta, W Bilnik, B Biondo, T Bird, E Birsin, E Bissaldi, J Biteau, M Bitossi, O Blanch Bigas, P Blasi, C Boehm, L Bogacz, M Bogdan, M Bohacova, C Boisson, J Boix Gargallo, J Bolmont, G Bonanno, A Bonardi, P Bonifacio, G Bonnoli, J Borkowski, R Bose, Z Bosnjak, A Bottani, M Böttcher, J-J Bousquet, C Boutonnet, F Bouyjou, C Braiding, L Brandt, S Brau-Nogué, J Bregeon, T Bretz, M Briggs, M Brigida, T Bringmann, W Brisken, E Brocato, P Brook, AM Brown, P Brun, G Brunetti, L Brunetti, P Bruno, M Bryan, T Buanes, N Bucciantini, G Buchholtz, J Buckley, V Bugaev, R Bühler, A Bulgarelli, T Bulik, M Burton, A Burtovoi, G Busetto, S Buson, J Buss, K Byrum, R Cameron, J Camprecios, F Canelli, R Canestrari, S Cantu, M Capalbi, M Capasso, G Capobianco, P Caraveo, J Cardenzana, S Carius, C Carlile, E Carmona, A Carosi, R Carosi, J Carr, M Carroll, J Carter, P-H Carton, R Caruso, J-M Casandjian, S Casanova, E Cascone, M Casiraghi, A Castellina, O Catalano, S Catalanotti, S Cavazzani, S Cazaux, M Cefalà, P Cerchiara, M Cereda, M Cerruti, E Chabanne, P Chadwick, C Champion, S Chaty, R Chaves, P Cheimets, A Chen, X Chen, M Chernyakova, L Chiappetti, M Chikawa, D Chinn, VR Chitnis, N Cho, A Christov, J Chudoba, M Cieślar, A Cillis, MA Ciocci, R Clay, J Cohen-Tanugi, S Colafrancesco, P Colin, E Colombo, J Colome, S Colonges, M Compin, V Conforti, V Connaughton, S Connell, J Conrad, JL Contreras, P Coppi, S Corbel, J Coridian, P Corona, D Corti, J Cortina, L Cossio, A Costa, H Costantini, G Cotter, B Courty, S Covino, G Covone, G Crimi, SJ Criswell, R Crocker, J Croston, G Cusumano, P Da Vela, Ø Dale, F D'Ammando, D Dang, M Daniel, I Davids, B Dawson, F Dazzi, B de Aguiar Costa, A De Angelis, RF de Araujo Cardoso, V De Caprio, G De Cesare, A De Franco, F De Frondat, EM de Gouveia Dal Pino, I de la Calle, GA De La Vega, R de los Reyes Lopez, B De Lotto, A De Luca, JRT de Mello Neto, M de Naurois, E de Oña Wilhelmi, F De Palma, V de Souza, G Decock, C Deil, M Del Santo, E Delagnes, G Deleglise, C Delgado, D della Volpe, P Deloye, G Depaola, M Detournay, A Dettlaff, T Di Girolamo, C Di Giulio, A Di Paola, F Di Pierro, G Di Sciascio, C Díaz, J Dick, H Dickinson, S Diebold, V Diez, S Digel, J Dipold, G Disset, A Distefano, A Djannati-Ataï, M Doert, M Dohmke, W Domainko, N Dominik, D Dominis Prester, A Donat, I Donnarumma, D Dorner, M Doro, J-L Dournaux, K Doyle, G Drake, D Dravins, L Drury, G Dubus, D Dumas, J Dumm, D Durand, D D'Urso, V Dwarkadas, J Dyks, M Dyrda, J Ebr, JC Echaniz, E Edy, K Egberts, K Egberts, P Eger, S Einecke, J Eisch, F Eisenkolb, C Eleftheriadis, D Elsässer, D Emmanoulopoulos, C Engelbrecht, D Engelhaupt, J-P Ernenwein, M Errando, S Eschbach, A Etchegoyen, P Evans, M Fairbairn, A Falcone, D Fantinel, K Farakos, C Farnier, E Farrell, S Farrell, G Fasola, S Fegan, F Feinstein, D Ferenc, A Fernandez, M Fernandez-Alonso, O Ferreira, M Fesquet, P Fetfatzis, A Fiasson, A Filipčič, M Filipovic, D Fink, C Finley, JP Finley, A Finoguenov, V Fioretti, M Fiorini, R Firpo Curcoll, H Fleischhack, H Flores, D Florin, C Föhr, E Fokitis, L Font, G Fontaine, B Fontes, F Forest, M Fornasa, A Förster, P Fortin, L Fortson, N Fouque, A Franckowiak, FJ Franco, A Frankowski, N Frega, I Freire Mota Albuquerque, L Freixas Coromina, L Fresnillo, C Fruck, M Fuessling, D Fugazza, Y Fujita, S Fukami, Y Fukazawa, T Fukuda, Y Fukui, S Funk, W Gäbele, S Gabici, A Gadola, N Galante, DD Gall, Y Gallant, D Galloway, S Gallozzi, S Gao, B Garcia, R García Gil, R Garcia López, M Garczarczyk, D Gardiol, C Gargano, F Gargano, S Garozzo, F Garrecht, D Garrido, L Garrido, D Gascon, J Gaskins, J Gaudemard, M Gaug, J Gaweda, N Geffroy, L Gérard, A Ghalumyan, A Ghedina, M Ghigo, P Ghislain, E Giannakaki, F Gianotti, S Giarrusso, G Giavitto, B Giebels, N Giglietto, V Gika, R Gimenes, M Giomi, P Giommi, F Giordano, G Giovannini, E Giro, M Giroletti, A Giuliani, J-F Glicenstein, N Godinovic, P Goldoni, M Gomez Berisso, GA Gomez Vargas, MM Gonzalez, A González, F González, A González Muñoz, KS Gothe, D Gotz, T Grabarczyk, R Graciani, P Grandi, F Grañena, J Granot, G Grasseau, R Gredig, AJ Green, AM Green, T Greenshaw, I Grenier, A Grillo, M-H Grondin, J Grube, M Grudzinska, J Grygorczuk, V Guarino, D Guberman, S Gunji, G Gyuk, D Hadasch, A Hagedorn, J Hahn, N Hakansson, N Hamer Heras, Y Hanabata, S Hara, MJ Hardcastle, J Harris, T Hassan, K Hatanaka, T Haubold, A Haupt, T Hayakawa, M Hayashida, M Heller, R Heller, F Henault, G Henri, G Hermann, R Hermel, J Herrera Llorente, A Herrero, O Hervet, N Hidaka, J Hinton, W Hirai, K Hirotani, D Hoard, D Hoffmann, W Hofmann, P Hofverberg, T Holch, J Holder, S Hooper, D Horan, JR Hörandel, S Hormigos, D Horns, J Hose, J Houles, T Hovatta, M Hrabovsky, D Hrupec, J-M Huet, M Hütten, TB Humensky, J Huovelin, J-F Huppert, M Iacovacci, A Ibarra, B Idźkowski, D Ikawa, JM Illa, D Impiombato, S Incorvaia, Y Inome, S Inoue, T Inoue, Y Inoue, F Iocco, K Ioka, M Iori, K Ishio, GL Israel, C Jablonski, A Jacholkowska, J Jacquemier, M Jamrozy, P Janecek, M Janiak, F Jankowsky, P Jean, C Jeanney, I Jegouzo, P Jenke, JJ Jimenez, M Jingo, M Jingo, L Jocou, T Jogler, CA Johnson, L Journet, C Juffroy, I Jung, PE Kaaret, M Kagaya, J Kakuwa, O Kalekin, C Kalkuhl, R Kankanyan, A Karastergiou, K Kärcher, M Karczewski, S Karkar, P Karn, J Kasperek, H Katagiri, J Kataoka, K Katarzyński, U Katz, S Kaufmann, N Kawanaka, T Kawashima, D Kazanas, N Kelley-Hoskins, B Kellner-Leidel, E Kendziorra, J Kersten, B Khélifi, DB Kieda, T Kihm, S Kisaka, R Kissmann, S Klepser, W Kluźniak, J Knapen, J Knapp, J Knödlseder, F Köck, J Kocot, A Kodakkadan, K Kodani, K Kohri, T Kojima, K Kokkotas, D Kolitzus, N Komin, I Kominis, Y Konno, K Kosack, G Koss, R Koul, G Kowal, S Koyama, J Kozioł, M Kraus, J Krause, M Krause, H Krawzcynski, F Krennrich, A Kretzschmann, P Kruger, H Kubo, V Kudryavtsev, G Kukec Mezek, J Kushida, A Kuznetsov, A La Barbera, N La Palombara, V La Parola, G La Rosa, H Laffon, T Lagadec, R Lahmann, K Lalik, G Lamanna, D Landriu, H Landt, RG Lang, D Languignon, J Lapington, P Laporte, N Latovski, D Law-Green, J-P Le Fèvre, T Le Flour, P Le Sidaner, S-H Lee, WH Lee, K Leffhalm, H Leich, MA Leigui de Oliveira, D Lelas, A Lemière, M Lemoine-Goumard, J-P Lenain, R Leonard, R Leoni, L Lessio, G Leto, A Leveque, B Lieunard, M Limon, R Lindemann, E Lindfors, A Liolios, A Lipniacka, H Lockart, T Lohse, D Loiseau, E Łokas, S Lombardi, F Longo, G Longo, A Lopatin, M Lopez, R López-Coto, A López-Oramas, D Loreggia, T Louge, F Louis, C-C Lu, F Lucarelli, D Lucchesi, H Lüdecke, PL Luque-Escamilla, O Luz, E Lyard, MC Maccarone, TJ Maccarone, E Mach, GM Madejski, A Madonna, M Mahabir, G Maier, P Majumdar, M Makariev, G Malaguti, G Malaspina, AK Mallot, S Maltezos, A Mancilla, D Mandat, G Maneva, P Manigot, N Mankushiyil, K Mannheim, N Maragos, D Marano, P Marchegiani, JA Marcomini, A Marcowith, M Mariotti, M Marisaldi, S Markoff, A Marszałek, C Martens, J Martí, J-M Martin, P Martin, G Martínez, M Martínez, O Martínez, R Marx, P Massimino, A Mastichiadis, S Mastroianni, M Mastropietro, S Masuda, H Matsumoto, S Matsuoka, S Mattiazzo, G Maurin, N Maxted, J Maya, M Mayer, D Mazin, E Mazureau, MN Mazziotta, L Mc Comb, A McCann, N McCubbin, I McHardy, R McKay, K McKinney, K Meagher, C Medina, F Mehrez, C Melioli, D Melkumyan, D Melo, T Melse, S Mereghetti, P Mertsch, M Meyer, JL Meyrelles, A Miccichè, J Michałowski, P Micolon, P Mientjes, S Mignot, A Mihailidis, T Mineo, M Minuti, N Mirabal, F Mirabel, JM Miranda, R Mirzoyan, A Mistò, A Mitchell, T Mizuno, R Moderski, I Mognet, M Mohammed, R Moharana, E Molinari, E Monmarthe, G Monnier, T Montaruli, C Monte, I Monteiro, P Moore, A Moralejo Olaizola, C Morello, E Moretti, K Mori, G Morlino, A Morselli, F Mottez, Y Moudden, E Moulin, I Mrusek, S Mueller, R Mukherjee, P Munar-Adrover, C Mundell, H Muraishi, K Murase, A Muronga, A Murphy, S Nagataki, T Nagayoshi, BK Nagesh, T Naito, D Nakajima, T Nakamori, K Nakayama, D Naumann, P Nayman, L Nellen, R Nemmen, A Neronov, V Neustroev, N Neyroud, T Nguyen, L Nicastro, J Nicolau-Kukliński, F Niederwanger, A Niedźwiecki, J Niemiec, D Nieto, M Nievas, A Nikolaidis, K Nishijima, K-I Nishikawa, K Noda, L Nogues, S Nolan, R Northrop, D Nosek, L Nozka, F Nunio, L Oakes, P O'Brien, G Occhipinti, A O'Faolain de Bhroithe, M Ogino, Y Ohira, M Ohishi, S Ohm, H Ohoka, A Okumura, J-F Olive, D Olszowski, RA Ong, S Ono, M Orienti, R Orito, A Orlati, A Orlati, J Osborne, M Ostrowski, LA Otero, D Ottaway, N Otte, I Oya, A Ozieblo, M Padovani, I Pagano, S Paiano, A Paizis, J Palacio, M Palatka, J Pallotta, K Panagiotidis, J-L Panazol, D Paneque, M Panter, MR Panzera, R Paoletti, M Paolillo, A Papayannis, G Papyan, A Paravac, JM Paredes, G Pareschi, N Park, D Parsons, P Paśko, S Pavy, M Paz Arribas, M Pech, A Peck, G Pedaletti, S Peet, V Pelassa, D Pelat, C Peres, MDC Perez, L Perri, M Persic, A Petrashyk, P-O Petrucci, B Peyaud, M Pfeifer, G Pfeiffer, G Piano, A Pichel, D Pieloth, M Pierbattista, E Pierre, F Pinto de Pinho, C Pio García, Y Piret, S Pita, A Planes, M Platino, Ł Platos, R Platzer, S Podkladkin, L Pogosyan, M Pohl, P Poinsignon, JD Ponz, A Porcelli, W Potter, S Poulios, J Poutanen, E Prandini, J Prast, R Preece, F Profeti, D Prokhorov, H Prokoph, M Prouza, M Proyetti, R Pruchniewicz, E Pueschel, G Pühlhofer, I Puljak, M Punch, R Pyzioł, F Queiroz, EJ Quel, J Quinn, A Quirrenbach, E Racero, T Räck, J Rafalski, I Rafighi, S Rainò, PJ Rajda, M Rameez, R Rando, RC Rannot, M Rataj, S Rateau, T Ravel, D Ravignani, S Razzaque, P Reardon, O Reimann, A Reimer, O Reimer, K Reitberger, M Renaud, S Renner, T Reposeur, R Rettig, B Reville, W Rhode, D Ribeiro, M Ribó, G Richards, MG Richer, J Rico, J Ridky, F Rieger, P Ringegni, PR Ristori, A Rivière, S Rivoire, E Roache, G Rodeghiero, J Rodriguez, G Rodriguez Fernandez, JJ Rodríguez Vázquez, T Rogers, G Rojas, P Romano, MP Romay Rodriguez, G Romeo, GE Romero, M Roncadelli, J Rose, S Rosen, S Rosier Lees, D Ross, P Rossiter, G Rouaix, J Rousselle, AC Rovero, G Rowell, F Roy, S Royer, A Różańska, B Rudak, A Rugliancich, C Rulten, M Rupiński, F Russo, K Rutkowski, O Saavedra, S Sabatini, B Sacco, EO Saemann, A Saggion, L Saha, V Sahakian, K Saito, T Saito, N Sakaki, M Salega, D Salek, J Salgado, A Salini, D Sanchez, F Sanchez, M Sanchez-Conde, H Sandaker, A Sandoval, P Sangiorgi, M Sanguillon, H Sano, M Santander, A Santangelo, EM Santos, R Santos-Lima, A Sanuy, L Sapozhnikov, S Sarkar, K Satalecka, R Savalle, M Sawada, F Sayède, J Schafer, S Schanne, T Schanz, EJ Schioppa, S Schlenstedt, R Schlickeiser, T Schmidt, J Schmoll, M Schneider, P Schovanek, A Schubert, C Schultz, J Schultze, A Schulz, S Schulz, K Schure, F Schussler, T Schwab, U Schwanke, J Schwarz, T Schweizer, S Schwemmer, U Schwendicke, C Schwerdt, A Segreto, J-H Seiradakis, GH Sembroski, D Semikoz, N Serre, M Servillat, K Seweryn, N Shafi, M Sharma, M Shayduk, RC Shellard, T Shibata, K Shiningayamwe Pandeni, A Shukla, E Shum, L Sidoli, M Sidz, J Sieiro, H Siejkowski, J Silk, A Sillanpää, D Simone, BB Singh, A Sinha, G Sironi, J Sitarek, P Sizun, V Slyusar, A Smith, J Smith, D Sobczyńska, H Sol, G Sottile, M Sowiński, F Spanier, G Spengler, D Spiga, R Stadler, O Stahl, V Stamatescu, A Stamerra, S Stanič, R Starling, Ł Stawarz, R Steenkamp, S Stefanik, C Stegmann, S Steiner, C Stella, N Stergioulas, R Sternberger, M Sterzel, B Stevenson, F Stinzing, M Stodulska, M Stodulski, T Stolarczyk, U Straumann, E Strazzeri, L Stringhetti, M Strzys, R Stuik, K-H Sulanke, AD Supanitsky, T Suric, I Sushch, P Sutcliffe, J Sykes, M Szanecki, T Szepieniec, P Szwarnog, A Tacchini, K Tachihara, G Tagliaferri, H Tajima, H Takahashi, K Takahashi, M Takahashi, L Takalo, H Takami, G Talbot, J Tammi, M Tanaka, S Tanaka, T Tanaka, Y Tanaka, C Tanci, E Tarantino, M Tavani, F Tavecchio, J-P Tavernet, K Tayabaly, LA Tejedor, I Telezhinsky, F Temme, P Temnikov, C Tenzer, Y Terada, R Terrier, D Tescaro, M Teshima, V Testa, D Tezier, J Thayer, V Thomas, J Thornhill, D Thuermann, L Tibaldo, O Tibolla, A Tiengo, G Tijsseling, MC Timpanaro, M Tluczykont, CJ Todero Peixoto, F Tokanai, M Tokarz, K Toma, K Toma, J Tomastik, Y Tomono, A Tonachini, D Tonev, K Torii, M Tornikoski, DF Torres, M Torres, E Torresi, S Toscano, G Toso, G Tosti, T Totani, N Tothill, F Toussenel, G Tovmassian, C Townsley, T Toyama, P Travnicek, M Trifoglio, I Troyano Pujadas, I Troyano Pujadas, M Trzeciak, K Tsinganos, Y Tsubone, Y Tsuchiya, S Tsujimoto, T Tsuru, Y Uchiyama, G Umana, Y Umetsu, C Underwood, SS Upadhya, M Uslenghi, F Vagnetti, J Valdes-Galicia, P Vallania, G Vallejo, L Valore, W van Driel, C van Eldik, B van Soelen, J Vandenbroucke, J Vanderwalt, G Vasileiadis, V Vassiliev, ML Vázquez Acosta, M Vecchi, I Vegas, P Veitch, L Venema, C Venter, S Vercellone, S Vergani, K Verma, V Verzi, GP Vettolani, A Viana, J Vicha, M Videla, C Vigorito, P Vincent, S Vincent, J Vink, V Vittorini, N Vlahakis, L Vlahos, H Voelk, P Vogler, V Voisin, A Vollhardt, A Volpicelli, S Vorobiov, I Vovk, LV Vu, R Wagner, RM Wagner, RG Wagner, SJ Wagner, SP Wakely, R Walter, T Walther, JE Ward, M Ward, K Warda, R Warwick, S Wassberg, J Watson, P Wawer, R Wawrzaszek, N Webb, P Wegner, A Weinstein, Q Weitzel, R Wells, F Werner, M Werner, H Wetteskind, M White, R White, M Więcek, A Wierzcholska, S Wiesand, R Wijers, N Wild, A Wilhelm, M Wilkinson, M Will, DA Williams, JT Williams, R Willingale, M Winde, K Winiarski, H Winkler, R Wischnewski, P Wojcik, D Wolf, M Wood, A Wörnlein, E Wu, T Wu, KK Yadav, H Yamamoto, T Yamamoto, R Yamazaki, S Yanagita, L Yang, JM Yebras, D Yelos, W Yeung, A Yoshida, T Yoshida, S Yoshiike, T Yoshikoshi, P Yu, V Zabalza, V Zabalza, M Zacharias, G Zaharijas, A Zajczyk, L Zampieri, F Zandanel, R Zanin, R Zanmar Sanchez, D Zavrtanik, M Zavrtanik, A Zdziarski, A Zech, H Zechlin, A Zhao, A Ziegler, J Ziemann, K Ziętara, J Ziółkowski, V Zitelli, A Zoli, C Zurbach, P Żychowski

Dark matter annihilation and decay in dwarf spheroidal galaxies: The classical and ultrafaint dSphs

Monthly Notices of the Royal Astronomical Society Oxford University Press 453:1 (2015) 849-867

Authors:

V Bonnivard, et others, C Combet, M Daniel, S Funk, A Geringer-Sameth, JA Hinton, D Maurin, JI Read, Subir Sarkar, MG Walker, MI Wilkinson

Abstract:

Dwarf spheroidal (dSph) galaxies are prime targets for present and future Γ-ray telescopes hunting for indirect signals of particle darkmatter. The interpretation of the data requires careful assessment of their dark matter content in order to derive robust constraints on candidate relic particles. Here, we use an optimized spherical Jeans analysis to reconstruct the 'astrophysical factor' for both annihilating and decaying dark matter in 21 known dSphs. Improvements with respect to previous works are: (i) the use of more flexible luminosity and anisotropy profiles to minimize biases, (ii) the use of weak priors tailored on extensive sets of contamination-free mock data to improve the confidence intervals, (iii) systematic cross-checks of binned and unbinned analyses on mock and real data, and (iv) the use of mock data including stellar contamination to test the impact on reconstructed signals. Our analysis provides updated values for the dark matter content of 8 'classical' and 13 'ultrafaint' dSphs, with the quoted uncertainties directly linked to the sample size; themore flexible parametrizationwe use results in changes compared to previous calculations. This translates into our ranking of potentiallybrightest and most robust targets-namely Ursa Minor, Draco, Sculptor-and of the more promising, but uncertain targets-namely Ursa Major 2, Coma-for annihilating dark matter. Our analysis of Segue 1 is extremely sensitive to whether we include or exclude a few marginal member stars, making this target one of the most uncertain. Our analysis illustrates challenges that will need to be addressed when inferring the dark matter content of new 'ultrafaint' satellites that are beginning to be discovered in southern sky surveys.

Higgs Boson production in association with a jet at next-to-next-to-leading order

Physical Review Letters American Physical Society 115:8 (2015) 082003

Authors:

R Boughezal, Fabrizio Caola, K Melnikov, F Petriello, M Schulze

Abstract:

We present precise predictions for Higgs boson production in association with a jet. We work in the Higgs effective field theory framework and compute next-to-next-to-leading order QCD corrections to the gluon-gluon and quark-gluon channels, which is sufficient for reliable LHC phenomenology. We present fully differential results as well as total cross sections for the LHC. Our next-to-next-to-leading order predictions reduce the unphysical scale dependence by more than a factor of 2 and enhance the total rate by about twenty percent compared to next-to-leading order QCD predictions. Our results demonstrate for the first time satisfactory convergence of the perturbative series.

Evidence for Astrophysical Muon Neutrinos from the Northern Sky with IceCube

Physical Review Letters American Physical Society 115:8 (2015) 081102

Authors:

Aartsen, K Abraham, M Ackermann, J Adams, JA Aguilar, M Ahlers, M Ahrens, D Altmann, T Anderson, M Archinger, C Arguelles, TC Arlen, J Auffenberg, X Bai, SW Barwick, V Baum, R Bay, JJ Beatty, JB Tjus, KH Becker, E Beiser, S BenZvi, P Berghaus, D Berley, E Bernardini, A Bernhard, DZ Besson, G Binder, D Bindig, M Bissok, E Blaufuss, J Blumenthal, DJ Boersma, C Bohm, M Börner, F Bos, D Bose, S Böser, O Botner, J Braun, L Brayeur, HP Bretz, AM Brown, N Buzinsky, J Casey, M Casier, E Cheung, D Chirkin, A Christov, B Christy

Abstract:

Results from the IceCube Neutrino Observatory have recently provided compelling evidence for the existence of a high energy astrophysical neutrino flux utilizing a dominantly Southern Hemisphere data set consisting primarily of ν(e) and ν(τ) charged-current and neutral-current (cascade) neutrino interactions. In the analysis presented here, a data sample of approximately 35,000 muon neutrinos from the Northern sky is extracted from data taken during 659.5 days of live time recorded between May 2010 and May 2012. While this sample is composed primarily of neutrinos produced by cosmic ray interactions in Earth's atmosphere, the highest energy events are inconsistent with a hypothesis of solely terrestrial origin at 3.7σ significance. These neutrinos can, however, be explained by an astrophysical flux per neutrino flavor at a level of Φ(E(ν))=9.9(-3.4)(+3.9)×10(-19)  GeV(-1) cm(-2) sr(-1) s(-1)(E(ν)/100  TeV(-2), consistent with IceCube's Southern-Hemisphere-dominated result. Additionally, a fit for an astrophysical flux with an arbitrary spectral index is performed. We find a spectral index of 2.2(-0.2)(+0.2), which is also in good agreement with the Southern Hemisphere result.

Fiducial cross sections for Higgs boson production in association with a jet at next-to-next-to-leading order in QCD

(2015)

Authors:

Fabrizio Caola, Kirill Melnikov, Markus Schulze