Precision Constraints for Three-Flavor Neutrino Oscillations from the Full MINOS+ and MINOS Dataset.

Physical review letters 125:13 (2020) 131802

Authors:

P Adamson, I Anghel, A Aurisano, G Barr, A Blake, SV Cao, TJ Carroll, CM Castromonte, R Chen, S Childress, JAB Coelho, S De Rijck, JJ Evans, GJ Feldman, W Flanagan, M Gabrielyan, S Germani, RA Gomes, P Gouffon, N Graf, K Grzelak, A Habig, SR Hahn, J Hartnell, R Hatcher, A Holin, J Huang, LW Koerner, M Kordosky, A Kreymer, K Lang, P Lucas, WA Mann, ML Marshak, N Mayer, R Mehdiyev, JR Meier, WH Miller, G Mills, D Naples, JK Nelson, RJ Nichol, J O'Connor, RB Pahlka, Ž Pavlović, G Pawloski, A Perch, MM Pfützner, DD Phan, RK Plunkett, N Poonthottathil, X Qiu, A Radovic, P Sail, MC Sanchez, J Schneps, A Schreckenberger, R Sharma, A Sousa, N Tagg, J Thomas, MA Thomson, A Timmons, J Todd, SC Tognini, R Toner, D Torretta, P Vahle, A Weber, LH Whitehead, SG Wojcicki, <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mi>MINOS</mi><mo>+</mo></mrow></math> Collaboration

Abstract:

We report the final measurement of the neutrino oscillation parameters Δm_{32}^{2} and sin^{2}θ_{23} using all data from the MINOS and MINOS+ experiments. These data were collected using a total exposure of 23.76×10^{20} protons on target producing ν_{μ} and ν[over ¯]_{μ} beams and 60.75 kt yr exposure to atmospheric neutrinos. The measurement of the disappearance of ν_{μ} and the appearance of ν_{e} events between the Near and Far detectors yields |Δm_{32}^{2}|=2.40_{-0.09}^{+0.08}(2.45_{-0.08}^{+0.07})×10^{-3}  eV^{2} and sin^{2}θ_{23}=0.43_{-0.04}^{+0.20}(0.42_{-0.03}^{+0.07}) at 68% C.L. for normal (inverted) hierarchy.

The Continuous Readout Stream of the MicroBooNE Liquid Argon Time Projection Chamber for Detection of Supernova Burst Neutrinos

(2020)

Authors:

MicroBooNE collaboration, P Abratenko, M Alrashed, R An, J Anthony, J Asaadi, A Ashkenazi, S Balasubramanian, B Baller, C Barnes, G Barr, V Basque, L Bathe-Peters, O Benevides Rodrigues, S Berkman, A Bhanderi, A Bhat, M Bishai, A Blake, T Bolton, L Camilleri, D Caratelli, I Caro Terrazas, R Castillo Fernandez, F Cavanna, G Cerati, Y Chen, E Church, D Cianci, EO Cohen, JM Conrad, M Convery, L Cooper-Troendle, JI Crespo-Anadon, M Del Tutto, D Devitt, R Diurba, L Domine, R Dorrill, K Duffy, S Dytman, B Eberly, A Ereditato, L Escudero Sanchez, JJ Evans, AA Fadeeva, GA Fiorentini Aguirre, RS Fitzpatrick, BT Fleming, N Foppiani, D Franco, AP Furmanski, D Garcia-Gamez, S Gardiner, S Gollapinni, O Goodwin, E Gramellini, P Green, H Greenlee, L Gu, W Gu, R Guenette, P Guzowski, E Hall, P Hamilton, O Hen, GA Horton-Smith, A Hourlier, EC Huang, R Itay, C James, J Jan de Vries, X Ji, L Jiang, JH Jo, RA Johnson, YJ Jwa, N Kamp, G Karagiorgi, W Ketchum, B Kirby, M Kirby, T Kobilarcik, I Kreslo, R LaZur, I Lepetic, K Li, Y Li, BR Littlejohn, D Lorca, WC Louis, X Luo, A Marchionni, S Marcocci, C Mariani, D Marsden, J Marshall, J Martin-Albo, DA Martinez Caicedo, K Mason, A Mastbaum, N McConkey, V Meddage, T Mettler, K Miller, J Mills, K Mistry, T Mohayai, A Mogan, J Moon, M Mooney, AF Moor, CD Moore, J Mousseau, M Murphy, D Naples, A Navrer-Agasson, RK Neely, P Nienaber, J Nowak, O Palamara, V Paolone, A Papadopoulou, V Papavassiliou, SF Pate, A Paudel, Z Pavlovic, E Piasetzky, I Ponce-Pinto, D Porzio, S Prince, X Qian, JL Raaf, V Radeka, A Rafique, M Reggiani-Guzzo, L Ren, L Rochester, J Rodriguez Rondon, HE Rogers, M Rosenberg, M Ross-Lonergan, B Russell, G Scanavini, DW Schmitz, A Schukraft, MH Shaevitz, R Sharankova, J Sinclair, A Smith, EL Snider, M Soderberg, S Soldner-Rembold, SR Soleti, P Spentzouris, J Spitz, M Stancari, J St John, T Strauss, K Sutton, S Sword-Fehlberg, AM Szelc, N Tagg, W Tang, K Terao, RT Thornton, C Thorpe, M Toups, Y-T Tsai, S Tufanli, MA Uchida, T Usher, W Van De Pontseele, RG Van de Water, B Viren, M Weber, H Wei, Z Williams, S Wolbers, T Wongjirad, M Wospakrik, W Wu, T Yang, G Yarbrough, LE Yates, GP Zeller, J Zennamo, C Zhang

Prospects for Beyond the Standard Model Physics Searches at the Deep Underground Neutrino Experiment

(2020)

Authors:

DUNE Collaboration, B Abi, R Acciarri, MA Acero, G Adamov, D Adams, M Adinolfi, Z Ahmad, J Ahmed, T Alion, S Alonso Monsalve, C Alt, J Anderson, C Andreopoulos, MP Andrews, F Andrianala, S Andringa, A Ankowski, M Antonova, S Antusch, A Aranda-Fernandez, A Ariga, LO Arnold, MA Arroyave, J Asaadi, A Aurisano, V Aushev, D Autiero, F Azfar, H Back, JJ Back, C Backhouse, P Baesso, L Bagby, R Bajou, S Balasubramanian, P Baldi, B Bambah, F Barao, G Barenboim, GJ Barker, W Barkhouse, C Barnes, G Barr, J Barranco Monarca, N Barros, JL Barrow, A Bashyal, V Basque, F Bay, JL Bazo Alba, JF Beacom, E Bechetoille, B Behera, L Bellantoni, G Bellettini, V Bellini, O Beltramello, D Belver, N Benekos, F Bento Neves, J Berger, S Berkman, P Bernardini, RM Berner, H Berns, S Bertolucci, M Betancourt, Y Bezawada, M Bhattacharjee, B Bhuyan, S Biagi, J Bian, M Biassoni, K Biery, B Bilki, M Bishai, A Bitadze, A Blake, B Blanco Siffert, FDM Blaszczyk, GC Blazey, E Blucher, J Boissevain, S Bolognesi, T Bolton, M Bonesini, M Bongrand, F Bonini, A Booth, C Booth, S Bordoni, A Borkum, T Boschi, N Bostan, P Bour, SB Boyd, D Boyden, J Bracinik, D Braga, D Brailsford, A Brandt, J Bremer, C Brew, E Brianne, SJ Brice, C Brizzolari, C Bromberg, G Brooijmans, J Brooke, A Bross, G Brunetti, N Buchanan, H Budd, D Caiulo, P Calafiura, J Calcutt, M Calin, S Calvez, E Calvo, L Camilleri, A Caminata, M Campanelli, D Caratelli, G Carini, B Carlus, P Carniti, I Caro Terrazas, H Carranza, A Castillo, C Castromonte, C Cattadori, F Cavalier, F Cavanna, S Centro, G Cerati, A Cervelli, A Cervera Villanueva, M Chalifour, C Chang, E Chardonnet, A Chatterjee, S Chattopadhyay, J Chaves, H Chen, M Chen, Y Chen, D Cherdack, C Chi, S Childress, A Chiriacescu, K Cho, S Choubey, A Christensen, D Christian, G Christodoulou, E Church, P Clarke, TE Coan, AG Cocco, JAB Coelho, E Conley, JM Conrad, M Convery, L Corwin, P Cotte, L Cremaldi, L Cremonesi, JI Crespo-Anadón, E Cristaldo, R Cross, C Cuesta, Y Cui, D Cussans, M Dabrowski, H da Motta, L Da Silva Peres, C David, Q David, GS Davies, S Davini, J Dawson, K De, RM De Almeida, 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, G Deptuch, A De Roeck, V De Romeri, JJ De Vries, 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, N Dokania, MJ Dolinski, L Domine, D Douglas, F Drielsma, D Duchesneau, K Duffy, P Dunne, T Durkin, H Duyang, O Dvornikov, DA Dwyer, AS Dyshkant, M Eads, D Edmunds, J Eisch, S Emery, A Ereditato, CO Escobar, L Escudero Sanchez, JJ Evans, E Ewart, AC Ezeribe, K Fahey, A Falcone, C Farnese, Y Farzan, J Felix, E Fernandez-Martinez, P Fernandez Menendez, F Ferraro, L Fields, A Filkins, F Filthaut, RS Fitzpatrick, W Flanagan, B Fleming, R Flight, J Fowler, W Fox, J Franc, K Francis, D Franco, J Freeman, J Freestone, J Fried, A Friedland, S Fuess, I Furic, AP Furmanski, A Gago, H Gallagher, A Gallego-Ros, N Gallice, V Galymov, E Gamberini, T Gamble, R Gandhi, R Gandrajula, S Gao, D Garcia-Gamez, MÁ García-Peris, S Gardiner, D Gastler, G Ge, B Gelli, A Gendotti, S Gent, Z Ghorbani-Moghaddam, D Gibin, I Gil-Botella, 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, MC Goodman, O Goodwin, S Goswami, C Gotti, E Goudzovski, C Grace, M Graham, E Gramellini, R Gran, E Granados, A Grant, C Grant, D Gratieri, P Green, S Green, L Greenler, M Greenwood, J Greer, WC Griffith, M Groh, J Grudzinski, K Grzelak, W Gu, V Guarino, R Guenette, A Guglielmi, B Guo, KK Guthikonda, R Gutierrez, P Guzowski, MM Guzzo, S Gwon, A Habig, A Hackenburg, H Hadavand, R Haenni, A Hahn, J Haigh, J Haiston, T Hamernik, P Hamilton, J Han, K Harder, DA Harris, J Hartnell, T Hasegawa, R Hatcher, E Hazen, A Heavey, KM Heeger, J Heise, K Hennessy, S Henry, MA Hernandez Morquecho, K Herner, L Hertel, AS Hesam, V Hewes, A Higuera, T Hill, SJ Hillier, A Himmel, J Hoff, C Hohl, A Holin, E Hoppe, GA Horton-Smith, M Hostert, A Hourlier, B Howard, R Howell, J Huang, J Huang, J Hugon, G Iles, N Ilic, AM Iliescu, R Illingworth, A Ioannisian, R Itay, A Izmaylov, E James, B Jargowsky, F Jediny, C Jesùs-Valls, X Ji, L Jiang, S Jiménez, A Jipa, A Joglekar, C Johnson, R Johnson, B Jones, S Jones, CK Jung, T Junk, Y Jwa, M Kabirnezhad, A Kaboth, I Kadenko, F Kamiya, G Karagiorgi, A Karcher, M Karolak, Y Karyotakis, S Kasai, SP Kasetti, L Kashur, N Kazaryan, E Kearns, P Keener, KJ Kelly, E Kemp, 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, M Kordosky, T Kosc, U Kose, VA Kostelecký, K Kothekar, F Krennrich, I Kreslo, Y Kudenko, VA Kudryavtsev, S Kulagin, J Kumar, R Kumar, C Kuruppu, V Kus, T Kutter, A Lambert, K Lande, CE Lane, K Lang, T Langford, P Lasorak, D Last, C Lastoria, A Laundrie, A Lawrence, I Lazanu, R LaZur, T Le, J Learned, P LeBrun, G Lehmann Miotto, R Lehnert, MA Leigui de Oliveira, M Leitner, M Leyton, L Li, S Li, SW Li, T Li, Y Li, H Liao, CS Lin, S Lin, A Lister, BR Littlejohn, J Liu, S Lockwitz, T Loew, M Lokajicek, I Lomidze, K Long, K Loo, D Lorca, T Lord, JM LoSecco, WC Louis, KB Luk, X Luo, N Lurkin, T Lux, VP Luzio, D MacFarland, AA Machado, P Machado, CT Macias, JR Macier, A Maddalena, P Madigan, S Magill, K Mahn, A Maio, JA Maloney, G Mandrioli, J Maneira, L Manenti, S Manly, A Mann, K Manolopoulos, M Manrique Plata, A Marchionni, W Marciano, D Marfatia, C Mariani, J Maricic, F Marinho, AD Marino, M Marshak, C Marshall, J Marshall, J Marteau, J Martin-Albo, N Martinez, DA Martinez Caicedo, S Martynenko, K Mason, A Mastbaum, M Masud, S Matsuno, J Matthews, C Mauger, N Mauri, K Mavrokoridis, R Mazza, A Mazzacane, E Mazzucato, E McCluskey, N McConkey, KS McFarland, C McGrew, A McNab, A Mefodiev, P Mehta, P Melas, M Mellinato, O Mena, S Menary, H Mendez, A Menegolli, G Meng, MD Messier, W Metcalf, M Mewes, H Meyer, T Miao, G Michna, T Miedema, J Migenda, R Milincic, 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, A Montanari, C Montanari, D Montanari, LM Montano Zetina, J Moon, M Mooney, A Moor, D Moreno, B Morgan, C Morris, C Mossey, E Motuk, CA Moura, J Mousseau, W Mu, L Mualem, J Mueller, M Muether, S Mufson, F Muheim, A Muir, M Mulhearn, H Muramatsu, S Murphy, J Musser, J Nachtman, S Nagu, M Nalbandyan, R Nandakumar, D Naples, S Narita, D Navas-Nicolás, N Nayak, M Nebot-Guinot, L Necib, K Negishi, JK Nelson, J Nesbit, M Nessi, D Newbold, M Newcomer, D Newhart, R Nichol, E Niner, K Nishimura, A Norman, A Norrick, R Northrop, P Novella, JA Nowak, M Oberling, A Olivares Del Campo, A Olivier, Y Onel, Y Onishchuk, J Ott, L Pagani, S Pakvasa, O Palamara, S Palestini, JM Paley, M Pallavicini, C Palomares, E Pantic, V Paolone, V Papadimitriou, R Papaleo, A Papanestis, S Paramesvaran, JC Park, S Parke, 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, Y Penichot, E Pennacchio, A Penzo, OLG Peres, J Perry, D Pershey, G Pessina, G Petrillo, C Petta, R Petti, F Piastra, L Pickering, F Pietropaolo, J Pillow, J Pinzino, R Plunkett, R Poling, X Pons, N Poonthottathil, S Pordes, M Potekhin, R Potenza, BVKS Potukuchi, J Pozimski, M Pozzato, S Prakash, T Prakash, S Prince, G Prior, D Pugnere, K Qi, X Qian, JL Raaf, R Raboanary, V Radeka, J Rademacker, B Radics, A Rafique, E Raguzin, M Rai, M Rajaoalisoa, I Rakhno, HT Rakotondramanana, L Rakotondravohitra, YA Ramachers, R Rameika, MA Ramirez Delgado, B Ramson, A Rappoldi, G Raselli, P Ratoff, S Ravat, H Razafinime, JS Real, B Rebel, D Redondo, M Reggiani-Guzzo, T Rehak, J Reichenbacher, SD Reitzner, A Renshaw, S Rescia, F Resnati, A Reynolds, G Riccobene, LCJ Rice, K Rielage, Y Rigaut, D Rivera, L Rochester, M Roda, P Rodrigues, MJ Rodriguez Alonso, J Rodriguez Rondon, AJ Roeth, H Rogers, S Rosauro-Alcaraz, M Rossella, J Rout, S Roy, A Rubbia, C Rubbia, B Russell, J Russell, D Ruterbories, R Saakyan, S Sacerdoti, T Safford, N Sahu, P Sala, N Samios, MC Sanchez, 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, P Schlabach, D Schmitz, K Scholberg, A Schukraft, E Segreto, J Sensenig, I Seong, A Sergi, F Sergiampietri, D Sgalaberna, MH Shaevitz, S Shafaq, M Shamma, HR Sharma, R Sharma, T Shaw, C Shepherd-Themistocleous, S Shin, D Shooltz, R Shrock, L Simard, N Simos, J Sinclair, G Sinev, J Singh, J Singh, V Singh, R Sipos, FW Sippach, G Sirri, A Sitraka, K Siyeon, D Smargianaki, A Smith, A Smith, E Smith, P Smith, J Smolik, M Smy, P Snopok, M Soares Nunes, H Sobel, M Soderberg, CJ Solano Salinas, S Söldner-Rembold, N Solomey, V Solovov, WE Sondheim, M Sorel, J Soto-Oton, A Sousa, K Soustruznik, F Spagliardi, M Spanu, J Spitz, NJC Spooner, K Spurgeon, R Staley, M Stancari, L Stanco, HM Steiner, J Stewart, B Stillwell, J Stock, F Stocker, D Stocks, T Stokes, M Strait, T Strauss, S Striganov, A Stuart, D Summers, A Surdo, V Susic, L Suter, CM Sutera, R Svoboda, B Szczerbinska, AM Szelc, R Talaga, 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, A Thea, JL Thompson, C Thorn, SC Timm, J Todd, A Tonazzo, M Torti, M Tortola, F Tortorici, D Totani, M Toups, C Touramanis, J Trevor, WH Trzaska, Y-T Tsai, Z Tsamalaidze, KV Tsang, N Tsverava, S Tufanli, C Tull, E Tyley, M Tzanov, MA Uchida, J Urheim, T Usher, MR Vagins, P Vahle, GA Valdiviesso, E Valencia, Z Vallari, JWF Valle, S Vallecorsa, R Van Berg, RG Van de Water, D Vanegas Forero, F Varanini, D Vargas, G Varner, J Vasel, G Vasseur, K Vaziri, S Ventura, A Verdugo, S Vergani, MA Vermeulen, M Verzocchi, H Vieira de Souza, C Vignoli, C Vilela, B Viren, T Vrba, T Wachala, AV Waldron, M Wallbank, H Wang, J Wang, Y Wang, Y Wang, K Warburton, D Warner, M Wascko, D Waters, A Watson, P Weatherly, A Weber, M Weber, H Wei, A Weinstein, D Wenman, M Wetstein, MR While, A White, LH Whitehead, D Whittington, MJ Wilking, C Wilkinson, Z Williams, F Wilson, RJ Wilson, J Wolcott, T Wongjirad, K Wood, L Wood, E Worcester, M Worcester, C Wret, W Wu, W Wu, Y Xiao, G Yang, T Yang, N Yershov, K Yonehara, T Young, B Yu, J Yu, R Zaki, J Zalesak, L Zambelli, B Zamorano, A Zani, L Zazueta, GP Zeller, J Zennamo, K Zeug, C Zhang, M Zhao, Y Zhao, E Zhivun, G Zhu, ED Zimmerman, M Zito, S Zucchelli, J Zuklin, V Zutshi, R Zwaska

Measurement of Space Charge Effects in the MicroBooNE LArTPC Using Cosmic Muons

(2020)

Authors:

MicroBooNE collaboration, P Abratenko, M Alrashed, R An, J Anthony, J Asaadi, A Ashkenazi, S Balasubramanian, B Baller, C Barnes, G Barr, V Basque, L Bathe-Peters, O Benevides Rodrigues, S Berkman, A Bhanderi, A Bhat, M Bishai, A Blake, T Bolton, L Camilleri, D Caratelli, I Caro Terrazas, R Castillo Fernandez, F Cavanna, G Cerati, Y Chen, E Church, D Cianci, EO Cohen, JM Conrad, M Convery, L Cooper-Troendle, JI Crespo-Anadon, M Del Tutto, D Devitt, R Diurba, L Domine, R Dorrill, K Duffy, S Dytman, B Eberly, A Ereditato, L Escudero Sanchez, JJ Evans, GA Fiorentini Aguirre, RS Fitzpatrick, BT Fleming, N Foppiani, D Franco, AP Furmanski, D Garcia-Gamez, S Gardiner, S Gollapinni, O Goodwin, E Gramellini, P Green, H Greenlee, L Gu, W Gu, R Guenette, P Guzowski, E Hall, P Hamilton, O Hen, GA Horton-Smith, A Hourlier, EC Huang, R Itay, C James, J Jan de Vries, X Ji, L Jiang, JH Jo, RA Johnson, YJ Jwa, N Kamp, G Karagiorgi, W Ketchum, B Kirby, M Kirby, T Kobilarcik, I Kreslo, R LaZur, I Lepetic, K Li, Y Li, BR Littlejohn, D Lorca, WC Louis, X Luo, A Marchionni, S Marcocci, C Mariani, D Marsden, J Marshall, J Martin-Albo, DA Martinez Caicedo, K Mason, A Mastbaum, N McConkey, V Meddage, T Mettler, K Miller, J Mills, K Mistry, T Mohayai, A Mogan, J Moon, M Mooney, AF Moor, CD Moore, J Mousseau, M Murphy, D Naples, A Navrer-Agasson, RK Neely, P Nienaber, J Nowak, O Palamara, V Paolone, A Papadopoulou, V Papavassiliou, SF Pate, A Paudel, Z Pavlovic, E Piasetzky, I Ponce-Pinto, D Porzio, S Prince, X Qian, JL Raaf, V Radeka, A Rafique, M Reggiani-Guzzo, L Ren, L Rochester, J Rodriguez Rondon, HE Rogers, M Rosenberg, M Ross-Lonergan, B Russell, G Scanavini, DW Schmitz, A Schukraft, MH Shaevitz, R Sharankova, J Sinclair, A Smith, EL Snider, M Soderberg, S Soldner-Rembold, SR Soleti, P Spentzouris, J Spitz, M Stancari, J St John, T Strauss, K Sutton, S Sword-Fehlberg, AM Szelc, N Tagg, W Tang, K Terao, RT Thornton, C Thorpe, M Toups, Y-T Tsai, S Tufanli, MA Uchida, T Usher, W Van De Pontseele, RG Van de Water, B Viren, M Weber, H Wei, Z Williams, S Wolbers, T Wongjirad, M Wospakrik, W Wu, T Yang, G Yarbrough, LE Yates, GP Zeller, J Zennamo, C Zhang

Performance of the missing transverse momentum triggers for the ATLAS detector during Run-2 data taking

Journal of High Energy Physics Springer 2020:8 (2020) 80

Authors:

G Aad, B Abbott, DC Abbott, Alan Barr, The ATLAS Collaboration

Abstract:

The factor of four increase in the LHC luminosity, from 0.5 × 1034 cm−2s−1 to 2.0 × 1034cm−2s−1, and the corresponding increase in pile-up collisions during the 2015–2018 data-taking period, presented a challenge for the ATLAS trigger, particularly for those algorithms that select events with missing transverse momentum. The output data rate at fixed threshold typically increases exponentially with the number of pile-up collisions, so the legacy algorithms from previous LHC data-taking periods had to be tuned and new approaches developed to maintain the high trigger efficiency achieved in earlier operations. A study of the trigger performance and comparisons with simulations show that these changes resulted in event selection efficiencies of > 98% for this period, meeting and in some cases exceeding the performance of similar triggers in earlier run periods, while at the same time keeping the necessary bandwidth within acceptable limits.