Chekhovsky, V.Hayrapetyan, A.Makarenko, V.Tumasyan, A.Adam, W.Andrejkovic, J. W.Druzhkin, D.2025-12-152025-12-1520251029-847910.1007/JHEP08(2025)0852-s2.0-105021487534https://doi.org/10.1007/JHEP08(2025)085Lange, Clemens/0000-0002-3632-3157; Melo Da Costa, Eliza/0000-0002-5016-6434; Krintiras, Georgios Konstantinos/0000-0002-0380-7577; Mantilla, Cristina/0000-0002-0177-5903; Ligabue, Franco/0000-0002-1549-7107; Röwert, Nicolas/0000-0002-4745-5470; Dallavalle, Gaetano Marco/0000-0002-8614-0420; Pfeffer, Emanuel/0009-0009-1748-974X; Naskar, Kousik/0000-0003-0638-4378; Noll, Dennis Daniel Nick/0000-0002-0176-2360; Ruales, Anderson/0000-0003-0826-0803; Novaes, Sergio/0000-0003-0471-8549; Rieger, Marcel/0000-0003-0797-2606; Kirpichnikov, Dmitry/0000-0002-7177-077X; Chatterjee, Suman/0000-0003-2660-0349; Kim, Suho/0000-0003-2381-5117; Heikkilä, Jaana/0000-0002-0538-1469; Govoni, Pietro/0000-0002-0227-1301; Pérez Prada, Maximilian/0000-0002-2831-463X; Bodek, Arie/0000-0003-0409-0341; Tok, Ufuk Guney/0000-0002-3039-021X; Dogra, Sunil Manohar/0000-0002-0812-0758; Vai, Ilaria/0000-0003-0037-5032; Ruiz, Jose/0000-0002-3306-0363; Dozen, Candan/0000-0002-4301-634X; Kim, Youngwan/0000-0002-4856-5989; Lasaosa García, Clara/0000-0003-2726-7111; Uslan, Ebru/0000-0002-2472-0526; Horzela, Maximilian/0000-0002-3190-7962; Dozen, Candan/0000-0002-4301-634X; Leon Holgado, Jaime/0000-0002-4156-6460; Gomez Espinosa, Tirso Alejano/0000-0002-9443-7769; Lorkowski, Florian/0000-0003-2677-3805; Golf, Frank/0000-0003-3567-9351; Menezes De Oliveira, Thales/0009-0009-4729-8354; Chitroda, Bhakti/0000-0002-0220-8441; Dansana, Soumya/0000-0002-7752-7471; Rieger, Marcel/0000-0003-0797-2606; Yagil, Avi/0000-0002-6108-4004; Sahasransu, Abanti Ranadhir/0000-0003-1505-1743; Poncet, Océane/0000-0002-5346-2968; Mondal, Spandan/0000-0003-0153-7590; Kole, Gouranga/0000-0002-3285-1497; Salvatico, Riccardo/0000-0002-2751-0567; Lintuluoto, Adelina/0000-0002-0726-1452; Cetorelli, Flavia/0000-0002-3061-1553; Long, Kenneth/0000-0003-0664-1653; Reimers, Arne Christoph/0000-0002-9438-2059; De Souza Lemos, Dener/0000-0003-1982-8978; Saha, Nihar Ranjan/0000-0002-7954-7898; Chou, Pin-Chun/0000-0002-5842-8566; Alcaraz Maestre, Juan/0000-0003-0914-7474; Novaes, Sergio/0000-0003-0471-8549; Lucchini, Marco Toliman/0000-0002-7497-7450; Kyriacou, Savvas/0000-0002-9254-4368; Lee, Lawrence/0000-0002-5590-335X; Robertshaw, Liam/0009-0006-5304-2492; Guzzi, Luca/0000-0002-3086-8260; Gomez-Ceballos, Guillelmo/0000-0003-1683-9460; Dozen, Candan/0000-0002-4301-634X; D'Anzi, Brunella/0000-0002-9361-3142; Garutti, Erika/0000-0003-0634-5539; Sharma, Vivek/0000-0003-1736-8795; Matorras-Cuevas, Pablo/0000-0001-7481-7273; Kramer, Tobias Robert Jakob/0000-0002-7004-0214; Meridiani, Paolo/0000-0002-8480-2259; Novaes, Sergio/0000-0003-0471-8549; Tok, Ufuk Guney/0000-0002-3039-021X; Lange, Clemens/0000-0002-3632-3157; Forthomme, Laurent/0000-0002-3302-336X; Qin, Xuelong/0009-0007-5089-3694; Ehatäht, Karl/0000-0002-2387-4777; Dominguez, Aaron/0000-0002-7420-5493; Cumalat, John/0000-0002-6032-5857; Han, Yixiao/0000-0002-3510-6505; Tiras, Emrah/0000-0002-5628-7464; Assiouras, Panagiotis/0000-0002-5152-9006; Dubinin, Mikhail/0000-0002-7766-7175; Sehrawat, Ashish/0000-0002-6816-7814; Lee, Jason/0000-0002-2153-1519; Petković, Ano/0009-0005-9565-6399; Hinzmann, Aneas/0000-0002-2633-4696; Vannerom, David/0000-0002-2747-5095; Tiwari, Praveen Chana/0000-0002-3667-3843; Simone, Federica Maria/0000-0002-1924-983X; Zorbakir, Ibrahim Soner/0000-0002-5962-2221; Waltenberger, Wolfgang/0000-0002-6215-7228; Golf, Frank/0000-0003-3567-9351; Zucchetta, Alberto/0000-0003-0380-1172; Watson, Ian James/0000-0003-2141-3413; Wittich, Peter/0000-0002-7401-2181; Klyukhin, Vyacheslav/0000-0002-8577-6531; Ajmal, Sehar/0000-0002-2726-2858; Zorbakir, Ibrahim Soner/0000-0002-5962-2221; Bury, Florian/0000-0002-3077-2090; Duarte, Javier Mauricio/0000-0002-5076-7096; Watson, Ian James/0000-0003-2141-3413; Cavallari, Francesca/0000-0002-1061-3877; Stäger, Fabian/0009-0003-0724-7727; De Leo, Ksenia/0000-0002-8908-409X; Lu, Meng/0000-0002-6999-3931; Sculac, Toni/0000-0002-9578-4105; Fontanesi, Elisa/0000-0002-0662-5904; Mehta, Ankita/0000-0002-0433-4484; Malik, Sudhir/0000-0002-6356-2655; Alexakhin, Vadim/0000-0002-4886-1569; Gershtein, Yuri/0000-0002-4871-5449; Martin Perez, Cristina/0000-0003-1581-6152; Vischia, Pietro/0000-0002-7088-8557; Tok, Ufuk Guney/0000-0002-3039-021X; Neri Huerta, Fernando Enrique/0000-0002-2298-2215; , Mohammad Mobassir Ameen/0000-0002-1909-9843; Mondal, Spandan/0000-0003-0153-7590; Castilla-Valdez, Heriberto/0009-0005-9590-9958; Riti, Federica/0000-0002-1466-9077; Navarrete Ramos, Efren/0000-0002-5180-4020; Ruabhatla, Sahithi/0000-0002-7366-4225; Hatakeyama, Kenichi/0000-0002-6012-2451; Erice Cid, Carlos Francisco/0000-0002-6469-3200; Yigitbasi, Efe/0000-0002-9595-2623; Jabeen, Shabnam/0000-0002-0155-7383; Osite, Dace/0000-0002-2912-319X; Fiorina, Davide/0000-0002-7104-257X; Ahmad, Ashfaq/0000-0002-4770-1897; Novaes, Sergio/0000-0003-0471-8549; Mastrapasqua, Paola/0000-0002-2043-2367; Ecklund, Karl/0000-0002-6976-4637; Konstantinou, Sotiroulla/0000-0003-0408-7636; Simone, Federica Maria/0000-0002-1924-983X; Mendizabal, Mikel/0000-0002-6506-5177; Lu, Meng/0000-0002-6999-3931; Jabusch, Henrik Ronald/0000-0003-2444-1014; Aarrestad, Thea/0000-0002-7671-243X; Arneodo, Michele/0000-0002-7790-7132; Gadallah, Mahmoud Moussa Abdelkhalek/0000-0002-8305-6661; Luongo, Fabio/0000-0003-2743-4119; Blumenfeld, Barry/0000-0003-1150-1735; Saha, Gourab/0000-0002-6125-1941; Mousa, Jehad/0000-0002-2978-2718; Grohsjean, Alexander/0000-0003-0748-8494; Petrucciani, Giovanni/0000-0003-0889-4726; Cavallari, Francesca/0000-0002-1061-3877; Chou, Pin-Chun/0000-0002-5842-8566; Kunnawalkam Elayavalli, Raghav/0000-0002-9202-1516; Kasemann, Matthias/0000-0002-0429-2448; Niedziela, Jeremi/0000-0002-9514-0799; D'Amante, Valeria/0000-0002-7342-2592; Pesaresi, Mark/0000-0002-9759-1083; Sharma, Vivek/0000-0003-1736-8795; Figueiredo, Diego/0000-0003-2514-6930; Chatterjee, Suman/0000-0003-2660-0349; Christoforou, Konstantinos/0000-0003-2205-1100; Meuser, Danilo/0000-0002-2722-7526; Albrecht, Steffen/0000-0002-5960-6803; Yagil, Avi/0000-0002-6108-4004; Faccioli, Pietro/0000-0003-1849-6692; Goldstein, Joel/0000-0003-1591-6014; Ptochos, Fotios/0000-0002-3432-3452; Dharmaratna, Welathantri/0000-0002-6366-837X; Chernyavskaya, Nadezda/0000-0002-2264-2229; Kalbhor, Pritam/0000-0002-5892-3743; Lee, Jason/0000-0002-2153-1519; Alves, Gilvan/0000-0002-8369-1446; Hinzmann, Aneas/0000-0002-2633-4696; Knight, Charlotte Rose/0009-0008-1167-4816; Nanda, Shirsendu/0000-0003-0550-4083; Sharma, Ram Krishna/0000-0003-1181-1426; Manzoni, Riccardo Anea/0000-0002-7584-5038; Rinkevicius, Aurelijus/0000-0002-7510-255X; Dharmaratna, Welathantri/0000-0002-6366-837X; Lee, Jason/0000-0002-2153-1519; Grummer, Aidan/0000-0003-2752-1183; Grab, Christophorus/0000-0002-6182-3380; Pásztor, Gabriella/0000-0003-0707-9762; Bärtschi, Pascal/0000-0002-8842-6027; Diotalevi, Tommaso/0000-0003-0780-8785; Calligaris, Luigi/0000-0002-9951-9448; Meng, Fanqiang/0000-0003-0443-5071; Piccinelli, Anea/0000-0003-0386-0527; Pizzati, Giorgio/0000-0003-1692-6206; Pásztor, Gabriella/0000-0003-0707-9762; Tapper, Alexander/0000-0003-4543-864X; Martinez Ruiz Del Arbol, Pablo/0000-0002-7737-5121; Chahal, Gurpreet Singh/0000-0003-0320-4407; Saha, Gourab/0000-0002-6125-1941; Moureaux, Louis/0000-0002-2310-9266; Cavallari, Francesca/0000-0002-1061-3877; Fischer, Yannick/0000-0002-3184-1457; Zorbakir, Ibrahim Soner/0000-0002-5962-2221; Goldouzian, Reza/0000-0002-0295-249X; Lawhorn, Jay/0000-0002-8597-9259; Frankenthal, Ane/0000-0002-2583-5982; Brooke, James/0000-0003-2529-0684; Agicevic, Marko/0000-0003-1967-6783; Novak, Anzej/0000-0002-0389-5896; Dozen, Candan/0000-0002-4301-634X; Duarte, Javier Mauricio/0000-0002-5076-7096; Mudholkar, Tanmay/0000-0002-9352-8140; Das, Pallabi/0000-0002-9770-1377; Klanner, Robert/0000-0002-7004-9227; Khvedelidze, Arsen/0000-0002-5953-0140; Pigazzini, Simone/0000-0002-8046-4344; D'Enterria, David/0000-0002-5754-4303; Kanuganti, Ankush Reddy/0000-0002-0789-1200; Leonardo, Nuno/0000-0002-9746-4594; Ha, Seungkyu/0000-0003-2538-1551; Piccinelli, Anea/0000-0003-0386-0527; Seidel, Markus/0000-0003-3550-6151; Van Onsem, Gerrit/0000-0002-1664-2337; Migliore, Ernesto/0000-0002-2271-5192; Missiroli, Marino/0000-0002-1780-1344; Tytgat, Michael/0000-0002-3990-2074; Torres Da Silva De Araujo, Felipe/0000-0002-4785-3057; , Mohammad Mobassir Ameen/0000-0002-1909-9843; Mantilla, Cristina/0000-0002-0177-5903; Pauls, Alexander/0000-0002-8117-5376; Fehérkuti, Anna/0000-0002-5043-2958; Zucchetta, Alberto/0000-0003-0380-1172;A search is performed for dark matter (DM) produced in association with a single top quark or a pair of top quarks using the data collected with the CMS detector at the LHC from proton-proton collisions at a center-of-mass energy of 13TeV, corresponding to 138 fb(-1) of integrated luminosity. An excess of events with a large imbalance of transverse momentum is searched for across 0, 1 and 2 lepton final states. Novel multivariate techniques are used to take advantage of the differences in kinematic properties between the two DM production mechanisms. No significant deviations with respect to the standard model predictions are observed. The results are interpreted considering a simplified model in which the mediator is either a scalar or pseudoscalar particle and couples to top quarks and to DM fermions. Axion-like particles that are coupled to top quarks and DM fermions are also considered. Expected exclusion limits of 410 and 380 GeV for scalar and pseudoscalar mediator masses, respectively, are set at the 95% confidence level. A DM particle mass of 1 GeV is assumed, with mediator couplings to fermions and DM particles set to unity. A small signal-like excess is observed in data, with the largest local significance observed to be 1.9 standard deviations for the 150 GeV pseudoscalar mediator hypothesis. Because of this excess, mediator masses are only excluded below 310 (320) GeV for the scalar (pseudoscalar) mediator. The results are also translated into model-independent 95% confidence level upper limits on the visible cross section of DM production in association with top quarks, ranging from 1 pb to 0.02 pb.eninfo:eu-repo/semantics/openAccessDark MatterHadron-Hadron ScatteringTop PhysicsArticle