Supernova model discrimination with hyper-kamiokande

Astrophysical Journal IOP Publishing 916:1 (2021) 15

Authors:

K Abe, P Adrich, H Aihara, R Akutsu, I Alekseev, A Ali, F Ameli, I Anghel, Lhv Anthony, M Antonova, A Araya, Y Asaoka, Y Ashida, V Aushev, F Ballester, I Bandac, M Barbi, Gj Barker, G Barr, M Batkiewicz-Kwasniak, M Bellato, V Berardi, M Bergevin, L Bernard, E Bernardini, L Berns, S Bhadra, J Bian, A Blanchet, Fdm Blaszczyk, A Blondel, A Boiano, S Bolognesi, L Bonavera, N Booth, S Borjabad, T Boschi, D Bose, C Bozza, A Bravar, D Bravo-Berguno, C Bronner, L Brown, A Bubak, A Buchowicz, M Buizza Avanzini, Fs Cafagna, Nf Calabria, Jm Calvo-Mozota, S Cao

Abstract:

Core-collapse supernovae are among the most magnificent events in the observable universe. They produce many of the chemical elements necessary for life to exist and their remnants - neutron stars and black holes - are interesting astrophysical objects in their own right. However, despite millennia of observations and almost a century of astrophysical study, the explosion mechanism of core-collapse supernovae is not yet well understood. Hyper-Kamiokande is a next-generation neutrino detector that will be able to observe the neutrino flux from the next galactic core-collapse supernova in unprecedented detail. We focus on the first 500 ms of the neutrino burst, corresponding to the accretion phase, and use a newly-developed, high-precision supernova event generator to simulate Hyper-Kamiokande's response to five different supernova models. We show that Hyper-Kamiokande will be able to distinguish between these models with high accuracy for a supernova at a distance of up to 100 kpc. Once the next galactic supernova happens, this ability will be a powerful tool for guiding simulations toward a precise reproduction of the explosion mechanism observed in nature.

Searching for solar KDAR with DUNE

(2021)

Authors:

DUNE Collaboration, A Abed Abud, B Abi, R Acciarri, MA Acero, MR Adames, G Adamov, D Adams, M Adinolfi, A Aduszkiewicz, J Aguilar, Z Ahmad, J Ahmed, B Ali-Mohammadzadeh, T Alion, K Allison, S Alonso Monsalve, M Alrashed, C Alt, A Alton, P Amedo, J Anderson, C Andreopoulos, M Andreotti, MP Andrews, F Andrianala, S Andringa, N Anfimov, A Ankowski, M Antoniassi, M Antonova, A Antoshkin, S Antusch, A Aranda-Fernandez, A Ariga, LO Arnold, MA Arroyave, J Asaadi, L Asquith, A Aurisano, V Aushev, D Autiero, M Ayala-Torres, F Azfar, A Back, H Back, JJ Back, C Backhouse, P Baesso, I Bagaturia, L Bagby, N Balashov, S Balasubramanian, P Baldi, B Baller, B Bambah, F Barao, G Barenboim, GJ Barker, W Barkhouse, C Barnes, G Barr, J Barranco Monarca, A Barros, N Barros, JL Barrow, A Basharina-Freshville, A Bashyal, V Basque, E Belchior, JBR Battat, F Battisti, F Bay, JL Bazo Alba, JF Beacom, E Bechetoille, B Behera, L Bellantoni, G Bellettini, V Bellini, O Beltramello, D Belver, N Benekos, C Benitez Montiel, F Bento Neves, J Berger, S Berkman, P Bernardini, RM Berner, H Berns, S Bertolucci, M Betancourt, A Betancur Rodríguez, A Bevan, TJC Bezerra, V Bhatnagar, M Bhattacharjee, S Bhuller, B Bhuyan, S Biagi, J Bian, M Biassoni, K Biery, B Bilki, M Bishai, A Bitadze, A Blake, FDM Blaszczyk, GC Blazey, E Blucher, J Boissevain, S Bolognesi, T Bolton, L Bomben, M Bonesini, M Bongrand, F Bonini, A Booth, C Booth, F Boran, S Bordoni, A Borkum, T Boschi, N Bostan, P Bour, C Bourgeois, SB Boyd, D Boyden, J Bracinik, D Braga, D Brailsford, A Branca, A Brandt, J Bremer, C Brew, E Brianne, SJ Brice, C Brizzolari, C Bromberg, G Brooijmans, J Brooke, A Bross, G Brunetti, M Brunetti, N Buchanan, H Budd, I Butorov, I Cagnoli, D Caiulo, R Calabrese, P Calafiura, J Calcutt, M Calin, S Calvez, E Calvo, A Caminata, M Campanelli, K Cankocak, D Caratelli, G Carini, B Carlus, MF Carneiro, P Carniti, I Caro Terrazas, H Carranza, T Carroll, JF Castaño Forero, A Castillo, C Castromonte, E Catano-Mur, C Cattadori, F Cavalier, F Cavanna, S Centro, G Cerati, A Cervelli, A Cervera Villanueva, M Chalifour, A Chappell, E Chardonnet, N Charitonidis, A Chatterjee, S Chattopadhyay, H Chen, M Chen, Y Chen, Z Chen, Y Cheon, D Cherdack, C Chi, S Childress, A Chiriacescu, G Chisnall, K Cho, S Choate, D Chokheli, PS Chong, S Choubey, A Christensen, D Christian, G Christodoulou, A Chukanov, M Chung, E Church, V Cicero, P Clarke, TE Coan, AG Cocco, JAB Coelho, E Conley, R Conley, JM Conrad, M Convery, S Copello, L Corwin, R Valentim, L Cremaldi, L Cremonesi, JI Crespo-Anadón, M Crisler, E Cristaldo, R Cross, A Cudd, C Cuesta, Y Cui, D Cussans, O Dalager, H da Motta, L Da Silva Peres, C David, Q David, GS Davies, S Davini, J Dawson, K De, P Debbins, I De Bonis, MP Decowski, A de Gouvêa, PC De Holanda, IL De Icaza Astiz, A Deisting, P De Jong, A Delbart, D Delepine, M Delgado, A Dell'Acqua, P De Lurgio, JRT de Mello Neto, DM DeMuth, S Dennis, C Densham, GW Deptuch, A De Roeck, V De Romeri, G De Souza, R Devi, R Dharmapalan, M Dias, F Diaz, JS Díaz, S Di Domizio, L Di Giulio, P Ding, L Di Noto, C Distefano, R Diurba, M Diwan, Z Djurcic, D Doering, S Dolan, F Dolek, MJ Dolinski, L Domine, D Douglas, D Douillet, G Drake, F Drielsma, L Duarte, D Duchesneau, K Duffy, P Dunne, T Durkin, H Duyang, O Dvornikov, DA Dwyer, AS Dyshkant, M Eads, A Earle, D Edmunds, J Eisch, L Emberger, S Emery, A Ereditato, T Erjavec, CO Escobar, G Eurin, JJ Evans, E Ewart, AC Ezeribe, K Fahey, A Falcone, M Fani, C Farnese, Y Farzan, D Fedoseev, J Felix, Y Feng, E Fernandez-Martinez, P Fernandez Menendez, M Fernandez Morales, F Ferraro, L Fields, P Filip, F Filthaut, A Fiorentini, M Fiorini, RS Fitzpatrick, W Flanagan, B Fleming, R Flight, DV Forero, J Fowler, W Fox, J Franc, K Francis, D Franco, J Freeman, J Freestone, J Fried, A Friedland, F Fuentes Robayo, S Fuess, IK Furic, AP Furmanski, A Gabrielli, A Gago, H Gallagher, A Gallas, A Gallego-Ros, N Gallice, V Galymov, E Gamberini, T Gamble, F Ganacim, R Gandhi, R Gandrajula, F Gao, S Gao, AC Garcia B., D Garcia-Gamez, MÁ García-Peris, S Gardiner, D Gastler, J Gauvreau, G Ge, B Gelli, A Gendotti, S Gent, Z Ghorbani-Moghaddam, P Giammaria, T Giammaria, D Gibin, I Gil-Botella, S Gilligan, C Girerd, AK Giri, D Gnani, O Gogota, M Gold, S Gollapinni, K Gollwitzer, RA Gomes, LV Gomez Bermeo, LS Gomez Fajardo, F Gonnella, JA Gonzalez-Cuevas, D Gonzalez Diaz, M Gonzalez-Lopez, MC Goodman, O Goodwin, S Goswami, C Gotti, E Goudzovski, C Grace, M Graham, R Gran, E Granados, P Granger, A Grant, C Grant, D Gratieri, P Green, L Greenler, J Greer, J Grenard, WC Griffith, M Groh, J Grudzinski, K Grzelak, W Gu, E Guardincerri, V Guarino, M Guarise, R Guenette, E Guerard, M Guerzoni, A Guglielmi, B Guo, KK Guthikonda, R Gutierrez, P Guzowski, MM Guzzo, S Gwon, C Ha, A Habig, H Hadavand, R Haenni, A Hahn, J Haiston, P Hamacher-Baumann, T Hamernik, P Hamilton, J Han, DA Harris, J Hartnell, J Harton, T Hasegawa, C Hasnip, R Hatcher, KW Hatfield, A Hatzikoutelis, C Hayes, K Hayrapetyan, J Hays, E Hazen, M He, A Heavey, KM Heeger, J Heise, K Hennessy, S Henry, MA Hernandez Morquecho, K Herner, L Hertel, V Hewes, A Higuera, T Hill, SJ Hillier, A Himmel, LR Hirsch, J Ho, J Hoff, A Holin, E Hoppe, GA Horton-Smith, M Hostert, A Hourlier, B Howard, R Howell, I Hristova, MS Hronek, J Huang, J Huang, J Hugon, G Iles, N Ilic, AM Iliescu, R Illingworth, G Ingratta, A Ioannisian, L Isenhower, R Itay, A Izmaylov, CM Jackson, V Jain, E James, W Jang, B Jargowsky, F Jediny, D Jena, YS Jeong, C Jesús-Valls, X Ji, L Jiang, S Jiménez, A Jipa, R Johnson, N Johnston, B Jones, SB Jones, M Judah, CK Jung, T Junk, Y Jwa, M Kabirnezhad, A Kaboth, I Kadenko, I Kakorin, A Kalitkina, F., D Kalra, Kamiya, N Kaneshige, G Karagiorgi, G Karaman, A Karcher, M Karolak, Y Karyotakis, S Kasai, SP Kasetti, L Kashur, N Kazaryan, E Kearns, P Keener, KJ Kelly, E Kemp, O Kemularia, W Ketchum, SH Kettell, M Khabibullin, A Khotjantsev, A Khvedelidze, D Kim, B King, B Kirby, M Kirby, J Klein, K Koehler, LW Koerner, S Kohn, PP Koller, L Kolupaeva, D Korablev, M Kordosky, T Kosc, U Kose, VA Kostelecký, K Kothekar, F Krennrich, I Kreslo, W Kropp, Y Kudenko, VA Kudryavtsev, S Kulagin, J Kumar, P Kumar, P Kunze, C Kuruppu, V Kus, T Kutter, J Kvasnicka, D Kwak, A Lambert, BJ Land, K Lande, CE Lane, K Lang, T Langford, M Langstaff, J Larkin, P Lasorak, D Last, C Lastoria, A Laundrie, G Laurenti, A Lawrence, I Lazanu, R LaZur, M Lazzaroni, T Le, S Leardini, J Learned, P LeBrun, T LeCompte, C Lee, SY Lee, G Lehmann Miotto, R Lehnert, MA Leigui de Oliveira, M Leitner, LM Lepin, L Li, SW Li, T Li, Y Li, H Liao, CS Lin, Q Lin, S Lin, J Ling, A Lister, BR Littlejohn, J Liu, S Lockwitz, T Loew, M Lokajicek, I Lomidze, K Long, K Loo, T Lord, JM LoSecco, WC Louis, X-G Lu, KB Luk, X Luo, E Luppi, N Lurkin, T Lux, VP Luzio, D MacFarlane, AA Machado, P Machado, CT Macias, JR Macier, A Maddalena, A Madera, P Madigan, S Magill, K Mahn, A Maio, A Major, JA Maloney, G Mandrioli, RC Mandujano, J Maneira, L Manenti, S Manly, A Mann, K Manolopoulos, M Manrique Plata, VN Manyam, L Manzanillas, M Marchan, A Marchionni, W Marciano, D Marfatia, C Mariani, J Maricic, R Marie, F Marinho, AD Marino, D Marsden, M Marshak, CM Marshall, J Marshall, J Marteau, J Martin-Albo, N Martinez, DA Martinez Caicedo, S Martynenko, V Mascagna, K Mason, A Mastbaum, M Masud, F Matichard, S Matsuno, J Matthews, C Mauger, N Mauri, K Mavrokoridis, I Mawby, R Mazza, A Mazzacane, E Mazzucato, T McAskill, E McCluskey, N McConkey, KS McFarland, C McGrew, A McNab, A Mefodiev, P Mehta, P Melas, O Mena, S Menary, H Mendez, P Mendez, DP Méndez, A Menegolli, G Meng, MD Messier, W Metcalf, T Mettler, M Mewes, H Meyer, T Miao, G Michna, T Miedema, V Mikola, R Milincic, G Miller, W Miller, J Mills, C Milne, O Mineev, OG Miranda, S Miryala, CS Mishra, SR Mishra, A Mislivec, D Mladenov, I Mocioiu, K Moffat, N Moggi, R Mohanta, TA Mohayai, N Mokhov, J Molina, L Molina Bueno, E Montagna, A Montanari, C Montanari, D Montanari, LM Montano Zetina, J Moon, SH Moon, M Mooney, AF Moor, D Moreno, C Morris, C Mossey, E Motuk, CA Moura, J Mousseau, G Mouster, W Mu, L Mualem, J Mueller, M Muether, S Mufson, F Muheim, A Muir, M Mulhearn, D Munford, H Muramatsu, S Murphy, J Musser, J Nachtman, S Nagu, M Nalbandyan, R Nandakumar, D Naples, S Narita, A Nath, D Navas-Nicolás, A Navrer-Agasson, N Nayak, M Nebot-Guinot, K Negishi, JK Nelson, J Nesbit, M Nessi, D Newbold, M Newcomer, D Newhart, H Newton, R Nichol, F Nicolas-Arnaldos, E Niner, K Nishimura, A Norman, A Norrick, R Northrop, P Novella, JA Nowak, M Oberling, JP Ochoa-Ricoux, A Olivares Del Campo, A Olivier, A Olshevskiy, Y Onel, Y Onishchuk, J Ott, L Pagani, S Pakvasa, G Palacio, O Palamara, S Palestini, JM Paley, M Pallavicini, C Palomares, JL Palomino-Gallo, W Panduro Vazquez, E Pantic, V Paolone, V Papadimitriou, R Papaleo, A Papanestis, S Paramesvaran, S Parke, E Parozzi, Z Parsa, M Parvu, S Pascoli, L Pasqualini, J Pasternak, J Pater, C Patrick, L Patrizii, RB Patterson, SJ Patton, T Patzak, A Paudel, B Paulos, L Paulucci, Z Pavlovic, G Pawloski, D Payne, V Pec, SJM Peeters, E Pennacchio, A Penzo, OLG Peres, J Perry, D Pershey, G Pessina, G Petrillo, C Petta, R Petti, V Pia, F Piastra, L Pickering, F Pietropaolo, R Plunkett, R Poling, X Pons, N Poonthottathil, F Poppi, S Pordes, J Porter, M Potekhin, R Potenza, BVKS Potukuchi, J Pozimski, M Pozzato, S Prakash, T Prakash, M Prest, S Prince, F Psihas, D Pugnere, X Qian, MC Queiroga Bazetto, JL Raaf, V Radeka, J Rademacker, B Radics, A Rafique, E Raguzin, M Rai, M Rajaoalisoa, I Rakhno, A Rakotonandrasana, L Rakotondravohitra, YA Ramachers, R Rameika, MA Ramirez Delgado, B Ramson, A Rappoldi, G Raselli, P Ratoff, S Raut, RF Razakamiandra, E Rea, JS Real, B Rebel, M Reggiani-Guzzo, T Rehak, J Reichenbacher, SD Reitzner, H Rejeb Sfar, A Renshaw, S Rescia, F Resnati, A Reynolds, M Ribas, S Riboldi, C Riccio, G Riccobene, LCJ Rice, J Ricol, A Rigamonti, Y Rigaut, D Rivera, A Robert, L Rochester, M Roda, P Rodrigues, MJ Rodriguez Alonso, E Rodriguez Bonilla, J Rodriguez Rondon, S Rosauro-Alcaraz, M Rosenberg, P Rosier, B Roskovec, M Rossella, M Rossi, C Rott, J Rout, P Roy, S Roy, A Rubbia, C Rubbia, FC Rubio, B Russell, D Ruterbories, A Rybnikov, A Saa-Hernandez, R Saakyan, S Sacerdoti, T Safford, N Sahu, P Sala, N Samios, O Samoylov, MC Sanchez, V Sandberg, DA Sanders, D Sankey, S Santana, M Santos-Maldonado, N Saoulidou, P Sapienza, C Sarasty, I Sarcevic, G Savage, V Savinov, A Scaramelli, A Scarff, A Scarpelli, T Schaffer, H Schellman, S Schifano, P Schlabach, D Schmitz, K Scholberg, A Schukraft, E Segreto, A Selyunin, CR Senise, J Sensenig, M Seoane, I Seong, A Sergi, D Sgalaberna, MH Shaevitz, S Shafaq, M Shamma, R Sharankova, HR Sharma, R Sharma, R Kumar, T Shaw, C Shepherd-Themistocleous, A Sheshukov, S Shin, I Shoemaker, D Shooltz, R Shrock, H Siegel, L Simard, F Simon, J Sinclair, G Sinev, J Singh, J Singh, L Singh, V Singh, R Sipos, FW Sippach, G Sirri, A Sitraka, K Siyeon, K Skarpaas, A Smith, E Smith, P Smith, J Smolik, M Smy, EL Snider, P Snopok, D Snowden-Ifft, M Soares Nunes, H Sobel, M Soderberg, S Sokolov, CJ Solano Salinas, S Söldner-Rembold, SR Soleti, N Solomey, V Solovov, WE Sondheim, M Sorel, A Sotnikov, J Soto-Oton, A Sousa, K Soustruznik, F Spagliardi, M Spanu, J Spitz, NJC Spooner, K Spurgeon, R Staley, M Stancari, L Stanco, R Stanley, R Stein, HM Steiner, AF Steklain Lisbôa, J Stewart, B Stillwell, J Stock, F Stocker, T Stokes, M Strait, T Strauss, S Striganov, A Stuart, JG Suarez, H Sullivan, D Summers, A Surdo, V Susic, L Suter, CM Sutera, R Svoboda, B Szczerbinska, AM Szelc, HA Tanaka, B Tapia Oregui, A Tapper, S Tariq, E Tatar, R Tayloe, AM Teklu, M Tenti, K Terao, CA Ternes, F Terranova, G Testera, T Thakore, A Thea, JL Thompson, C Thorn, SC Timm, V Tishchenko, J Todd, L Tomassetti, A Tonazzo, D Torbunov, M Torti, M Tortola, F Tortorici, N Tosi, D Totani, M Toups, C Touramanis, R Travaglini, J Trevor, S Trilov, A Tripathi, WH Trzaska, Y Tsai, Y-T Tsai, Z Tsamalaidze, KV Tsang, N Tsverava, S Tufanli, C Tull, E Tyley, M Tzanov, L Uboldi, MA Uchida, J Urheim, T Usher, S Uzunyan, MR Vagins, P Vahle, GA Valdiviesso, E Valencia, Z Vallari, E Vallazza, JWF Valle, S Vallecorsa, R Van Berg, RG Van de Water, F Varanini, D Vargas, G Varner, J Vasel, S Vasina, G Vasseur, N Vaughan, K Vaziri, S Ventura, A Verdugo, S Vergani, MA Vermeulen, M Verzocchi, M Vicenzi, H Vieira de Souza, C Vignoli, C Vilela, B Viren, T Vrba, T Wachala, AV Waldron, M Wallbank, C Wallis, H Wang, J Wang, L Wang, MHLS Wang, Y Wang, Y Wang, K Warburton, D Warner, MO Wascko, D Waters, A Watson, P Weatherly, A Weber, M Weber, H Wei, A Weinstein, D Wenman, M Wetstein, A White, LH Whitehead, D Whittington, MJ Wilking, C Wilkinson, Z Williams, F Wilson, RJ Wilson, W Wisniewski, J Wolcott, T Wongjirad, A Wood, K Wood, E Worcester, M Worcester, C Wret, W Wu, W Wu, Y Xiao, F Xie, E Yandel, G Yang, K Yang, S Yang, T Yang, A Yankelevich, N Yershov, K Yonehara, T Young, B Yu, H Yu, H Yu, J Yu, W Yuan, R Zaki, J Zalesak, L Zambelli, B Zamorano, A Zani, L Zazueta, GP Zeller, J Zennamo, K Zeug, C Zhang, M Zhao, E Zhivun, G Zhu, P Zilberman, ED Zimmerman, M Zito, S Zucchelli, J Zuklin, V Zutshi, R Zwaska

Search for squarks and gluinos in final states with one isolated lepton, jets, and missing transverse momentum at root s=13 TeV with the ATLAS detector

European Physical Journal C Springer Nature 81:7 (2021) 600

Authors:

G Aad, B Abbott, Dc Abbott, A Abed Abud, K Abeling, Dk Abhayasinghe, Sh Abidi, Os AbouZeid, Nl Abraham, H Abramowicz, H Abreu, Y Abulaiti, Bs Acharya, B Achkar, L Adam, C Adam Bourdarios, L Adamczyk, L Adamek, J Adelman, A Adiguzel, S Adorni, T Adye, Aa Affolder, Y Afik, C Agapopoulou, Mn Agaras, A Aggarwal, C Agheorghiesei, Ja Aguilar-Saavedra, A Ahmad, F Ahmadov, Ws Ahmed, X Ai, G Aielli, S Akatsuka, M Akbiyik, Tpa Akesson, E Akilli, Av Akimov, K Al Khoury, Gl Alberghi, J Albert, Mj Alconada Verzini, S Alderweireldt, M Aleksa, In Aleksandrov, T Alexopoulos, C Alexa, Alan Barr, Ej Gallas

Abstract:

The results of a search for gluino and squark pair production with the pairs decaying via the lightest charginos into a final state consisting of two W bosons, the lightest neutralinos (χ~10), and quarks, are presented: the signal is characterised by the presence of a single charged lepton (e± or μ±) from a W boson decay, jets, and missing transverse momentum. The analysis is performed using 139 fb- 1 of proton–proton collision data taken at a centre-of-mass energy s=13 delivered by the Large Hadron Collider and recorded by the ATLAS experiment. No statistically significant excess of events above the Standard Model expectation is found. Limits are set on the direct production of squarks and gluinos in simplified models. Masses of gluino (squark) up to 2.2 (1.4) are excluded at 95% confidence level for a light χ~10.

Exploring Neutrino-Nucleus Interactions in the GeV Regime using MINERvA

(2021)

Authors:

X-G Lu, Z Ahmad Dar, F Akbar, DA Andrade, MV Ascencio, GD Barr, A Bashyal, L Bellantoni, A Bercellie, M Betancourt, A Bodek, JL Bonilla, H Budd, G Caceres, T Cai, MF Carneiro, H da Motta, GA Diaz, J Felix, L Fields, A Filkins, R Fine, AM Gago, H Gallagher, SM Gilligan, R Gran, DA Harris, S Henry, D Jena, S Jena, J Kleykamp, A Klustova, M Kordosky, D Last, A Lozano, E Maher, S Manly, WA Mann, C Mauger, KS McFarland, AM McGowan, B Messerly, J Miller, JG Morfin, D Naples, JK Nelson, C Nguyen, A Olivier, V Paolone, GN Perdue, K-J Plows, MA Ramirez, RD Ransome, H Ray, PA Rodrigues, D Ruterbories, H Schellman, CJ Solano Salinas, H Su, M Sultana, VS Syrotenko, E Valencia, AV Waldron, D Wark, A Weber, K Yang, L Zazueta

The ATLAS Fast TracKer system

Journal of Instrumentation IOP Publishing 16:7 (2021) P07006

Authors:

G Aad, B Abbott, Dc Abbott, L Ambroz, G Artoni, WK Balunas, Aj Barr, L Beresford, D Bortoletto, F Celli, AM Cooper-Sarkar, MG Foti, JA Frost, GE Gallardo, EJ Gallas, JC Grundy, C Gwenlan, CP Hays, TB Huffman, K Karava, Z Li, L Marchese, C Merlassino, M Mironova, K Nagai, RB Nickerson, AP O'neill, SR Paredes Saenz, K Potamianos, E Schopf, IPJ Shipsey, HA Smith, B Stanislaus, M Stankaityte, C Tosciri, GHA Viehhauser, Y Wei, AR Weidberg, PJ Windischhofer, R Wölker, J Wuerzinger, G Zemaityte, M Zgubič

Abstract:

The ATLAS Fast TracKer (FTK) was designed to provide full tracking for the ATLAS high-level trigger by using pattern recognition based on Associative Memory (AM) chips and fitting in high-speed field programmable gate arrays. The tracks found by the FTK are based on inputs from all modules of the pixel and silicon microstrip trackers. The as-built FTK system and components are described, as is the online software used to control them while running in the ATLAS data acquisition system. Also described is the simulation of the FTK hardware and the optimization of the AM pattern banks. An optimization for long-lived particles with large impact parameter values is included. A test of the FTK system with the data playback facility that allowed the FTK to be commissioned during the shutdown between Run 2 and Run 3 of the LHC is reported. The resulting tracks from part of the FTK system covering a limited η-ϕ region of the detector are compared with the output from the FTK simulation. It is shown that FTK performance is in good agreement with the simulation.