Search for low-mass hidden-valley dark showers with non-prompt muon pairs in proton-proton collisions at $$ \sqrt{s}=13 $$ TeV

作者：A. Hayrapetyan, В. Макаренко, A. Tumasyan, W. Adam, Janik Walter Andrejkovic, L. Benato, Thomas Bergauer, M. Dragicevic, Cristina Giordano, Priya Sajid Hussain, M. Jeitler, Natascha Krammer, Ang Li, D. Liko, Mark Matthewman, I. Mikulec, J. Schieck, D. Schwarz, R. Schöfbeck, Maryam Shooshtari, M. Sonawane, W. Waltenberger, C.-E. Wulz, X. Janssen, H. Kwon, D. Ocampo Henao, T. Van Laer, P. Van Mechelen, Jas Bierkens, Nordin Breugelmans, J. D’Hondt, Soumya Dansana, A. De Moor, M. Delcourt, Felix Heyen, Y. Hong, Pavlo Kashko, Steven Lowette, I. Makarenko, Denise Müller, Juhee Song, S. Tavernier, M. Tytgat, G. P. Van Onsem, S. Van Putte, D. Vannerom, Bugra Bilin, Barbara Clerbaux, Aloke Kumar Das, I. De Bruyn, G. De Lentdecker, Hugues Evard, Laurent Favart, P. Gianneios, Ali Khalilzadeh, Fakhri Alam Khan, A. Malara, Muhammad Aamir Shahzad, Laurent Thomas, M. Vanden Bemden, C. Vander Velde, P. Vanlaer, F. Zhang, M. De Coen, D. Dobur, G. Gökbulut, J. Knolle, David Marckx, K. Skovpen, Adina Maria Tomaru, N. Van Den Bossche, Jan van der Linden, Jules Vandenbroeck, Liam Wezenbeek, S. Bein, A. Benecke, A. Bethani, G. Bruno, A. Cappati, J. De Favereau De Jeneret, C. Delaere, Francisco Gameiro Casalinho, A. Giammanco, Ahmet Oguz Guzel, Vincent Lemaître, J. Lidrych, Paul Malek, Paola Mastrapasqua, S. Turkcapar, G. A. Alves, M. Barroso Ferreira Filho, E. Coelho, C. Hensel, T. Menezes De Oliveira, C. Mora Herrera, P. Rebello Teles, Mariana Soeiro, E. J. Tonelli Manganote, A. Vilela Pereira, W. L. Aldá Júnior, H. Brandao Malbouisson, W. Carvalho, J. Chinellato, Matheus Costa Reis, E. M. Da Costa, Gustavo Gil da Silveira, D. De Jesus Damião, S. Fonseca De Souza, Raphael Gomes de Souza, Silas Jesus, Tulio Laux Kuhn, Matheus Macedo, K. Mota Amarilo, L. Mundim, H. Nogima, Joao Pedro Pinheiro, A. Santoro, A. Sznajder, M. Thiel, F. Torres Da Silva De Araujo, C. A. Bernardes, Florian Damas, Eduardo De Moraes Gregores, Bruno Lopes da Costa, Isabela Maietto Silvério, P. G. Mercadante, S. F. Novaes, Breno Orzari, Sandra S. Padula, V. Scheurer, T. R. Fernandez Perez Tomei, А. Александров, G. Antchev, Petar Danev, R. Hadjiiska, P. Iaydjiev, M. Shopova, G. Sultanov, A. Dimitrov, L. Litov, B. Pavlov, P. Petkov, A. Petrov, Sumit Keshri, D. Laroze, S. Thakur, W. K. Brooks, Tongguang Cheng, Tahir Javaid, Long Wang, L. Yuan, Z. Hu, Zhengchen Liang, Jinfeng Liu, Xining Wang, Heng Yang, Guo-Ming Chen, He-Sheng Chen, Mingshui Chen, Ye Chen, Qingfeng Hou, Xiaonan Hou, F. Iemmi, Chun-Hua Jiang, A. Kapoor, H. Liao, G. Liu, Zhenan Liu, Jia-Ning Song, Shaowei Song, J. Tao, Chu Wang, Jin Wang, Huaqiao Zhang, Jingzhou Zhao, Antonis Agapitos, Y. Ban, A. Carvalho Antunes De Oliveira, Sen Deng, Botao Guo, Qianying Guo, C. H. Jiang, A. Levin, C. Li, Q. Li, Yajun Mao, Sitian Qian, S. J. Qian, Xinyu Qin, Claudio Quaranta, X. Sun, D. Wang, Jin Wang, Mingtao Zhang, Yuzhe Zhao, Chen Zhou, Shuai Yang, Z. You, K. Jaffel, N. Lu, G. Bauer, Zhipeng Cui, Bolin Li, Hui Wang, K. Yi, Jingqing Zhang, Yuji Li, Zhen Lin, C. Lü, M. Xiao, Carlos Avila, Diego Andres Barbosa Trujillo, Andrés Cabrera, C. Florez, Jorge Fraga, J. A. Reyes Vega, C. Rendón, Manuel Rodríguez, Anderson Alexis Ruales Barbosa, J. D. Ruiz Alvarez, N. Godinović, Damir Lelas, Ana Sculac, M. Kovac, Andro Petkovic, T. Sculac, P. Bargassa, V. Brigljević, B. K. Chitroda, D. Ferenček, K. Jakovčić, A. Starodumov, T. Šuša, A. Attikis, K. Christoforou, Christos Leonidou, C. Nicolaou, Leonidas Paizanos, F. Ptochos, P. A. Razis, H. Rykaczewski, H. Saka, A. Stepennov, М. Фингер, М. Фингер, E. Ayala, E. Carrera Jarrin, S. Elgammal, A. Y. Ellithi, Ahmed Hussein, Hemida Mohammed, K. Ehatäht, M. Kadastik, T. Lange, C. Nielsen, Joosep Pata, M. Raidal, Norman Seeba, L. Tani, E. Brücken, Anna Milieva, K. Österberg, M. Voutilainen, F. García, Patin Inkaew, K. T. S. Kallonen, Ravindra Kumar Verma, Tapio Lampén, K. Lassila-Perini, Bettina Lehtelä, S. Lehti, T. Lindén, Nestor Raul Mancilla Xinto, M. Myllymäki, M. m. Rantanen, Santeri Saariokari, Nico Timothy Toikka, J. Tuominiemi, N. Bin Norjoharuddeen, H. Kirschenmann, P. Luukka, H. Petrow, M. Besançon, F. Couderc, M. Déjardin, Daniel Denegri, Paul Devouge, Jean-Louis Faure, F. Ferri, Paul Gaigne, Serguei Ganjour, P. Gras, G. Hamel de Monchenault, M. Kumar, V. Lohezic, Yuliia Maidannyk, J. Malclès, Francesco Orlandi, L. Portales, Silvia Ronchi, Mehmet Özgür Sahin, Aurore Savoy-Navarro, P. Simkina, M. Titov, M. Tornago, Ruth Amella Ranz, F. Beaudette, G. Boldrini, P. Busson, C. Charlot, Marco Chiusi, Théo Damien Cuisset, O. Davignon, A. De Wit, Trisha Debnath, Isaac Telford Ehle, Shamik Ghosh, A. Gilbert, R. Granier de Cassagnac, Lida Kalipoliti, Martina Manoni, M. Nguyen, S. Obraztsov, C. Ochando, R. Salerno, Jean-Baptiste Sauvan, Y. Sirois, Gamze Sokmen, L. Urda Gómez, A. Zabi, A. Zghiche, Jean-Laurent Agram, J. Andreä, D. Blöch, J.-M. Brom, E. C. Chabert, C. Collard, Gaël Coulon, S. Falke, U. Goerlach, Raphael Haeberle, Anne-Catherine Le Bihan, M. Meena, Océane Poncet, G. Saha, Paul Vaucelle, Adriano Di Florio, David Amram, S. Beauceron, B. Blancon, G. Boudoul, Nicolas Chanon, D. Contardo, P. Depasse, H. El Mamouni, Jean Fay, S. Gascon, M. Gouzevitch, Christopher Greenberg, Gérald Grenier, Bernard Ille, Elise Jourd'Huy, M. Lethuillier, Benjamin Massoteau, Laurent Mirabito, A. Purohit, M. Vander Donckt, J. Xiao, A. Khvedelidze, I. Lomidze, Z. Tsamalaidze, V. Botta, S. Consuegra Rodŕıguez, L. Feld, K. Klein, M. Lipinski, D. Meuser, Philipp Nattland, Vanessa Oppenländer, A. Pauls, D. Pérez Adán, N. Röwert, M. Teroerde, Caio Daumann, S. Diekmann, A. Dodonova, N. Eich, D. Eliseev, Frederic Engelke, J. Erdmann, M. Erdmann, Benjamin Fischer, T. Hebbeker, K. Höepfner, F. Ivone, Alexander Jung, Nitish Kumar, Ming-Yan Lee, Florian Mausolf, M. Merschmeyer, A. Meyer, Fabian Nowotny, Andrey Pozdnyakov, W. Redjeb, H. Reithler, U. Sarkar, Valentina Sarkisovi, A. Schmidt, Chinmay Seth, A. Sharma, Jan Lukas Späh, Valentyn Vaulin, S. Zaleski, Max Romain Beckers, Christian Dziwok, G. Flügge, Nina Hoeflich, T. Kress, A. Nowack, O. Pooth, A. Stahl, A. Zotz, H. Aarup Petersen, Anton S. Abel, M. Aldaya Martin, J. Alimena, S. Amoroso, Y. An, И. А. Андреев, Jorn Bach, S. Baxter, M. Bayatmakou, H. Becerril Gonzalez, O. Behnke, Alberto Belvedere, F. Blekman, K. Borras, A. Campbell, S. Chatterjee, Lucia Ximena Coll Saravia, Guenter Eckerlin, Doris Eckstein, E. Gallo, A. Geiser, V. Guglielmi, M. Guthoff, A. Hinzmann, L. Jeppe, M. Kasemann, C. Kleinwort, R. Kogler, M. Komm, D. Krücker, Wolfgang Lange, D. Leyva Pernía, K. Lin, K. Lipka, W. Lohmann, Jacopo Malvaso, Rainer Mankel, Isabell-Alissandra Melzer-Pellmann, Mikel Mendizabal Morentin, A. B. Meyer, Gabriele Milella, Keila Moral Figueroa, A. Mussgiller, Lakshmi Priya Nair, J. Niedziela, A. Nürnberg, J. Park, Evan Ranken, A. Raspereza, Daniil Rastorguev, Lovisa Rygaard, Moritz Scham, S. Schnake, C. Schwanenberger, P. Schütze, D. Selivanova, Konstantin Sharko, M. Shchedrolosiev, Dominic Stafford, Matin Torkian, F. Vazzoler, A. Ventura Barroso, R. Walsh, Di Wang, Qun Wang, Katarzyna Wichmann, Lucas Wiens, Christoph Wissing, Y. Yang, Stepan Zakharov, A. Zimermmane Castro Santos, Ana Rita Alves Andrade, M. Antonello, Sven Bollweg, M. Bonanomi, K. El Morabit, Yannick Fischer, Mathis Frahm, E. Garutti, Alexander Grohsjean, Ayse Asu Guvenli, J. Haller, Daniel Hundhausen, Gregor Kasieczka, Philip Keicher, R. Klanner, W. Korcari, T. Krämer, Chin-Chia Kuo, F. Labe, J. Lange, Artur Lobanov, L. Moureaux, Aliya Nigamova, K. Nikolopoulos, A. Paasch, K. J. Pena Rodriguez, Nathan Prouvost, Bianca Raciti, M. Rieger, D. Savoiu, P. Schleper, M. Schröder, J. Schwandt, M. Sommerhalder, Hartmut Stadie, G. Steinbrück, Robert Ward, Bogdan Wiederspan, M. Wolf, S. Brommer, Erik Butz, Yi-Mu Chen, T. Chwalek, A. Dierlamm, Gizem Gul Dincer, Umut Elicabuk, N. Faltermann, M. Giffels, A. Gottmann, Frank Hartmann, M. Horzela, Fabian Hummer, U. Husemann, J. Kieseler, M. Klute, R. Kunnilan Muhammed Rafeek, Olha Lavoryk, J. M. Lawhorn, A. Lintuluoto, S. Maier, M. Mormile, Thomas Müller, E. Pfeffer, M. Presilla, Gunter Quast, K. Rabbertz, B. Regnery, Robert William Schmieder, Nikita Shadskiy, Ivan Shvetsov, H. J. Simonis, Lars Sowa, Lea Stockmeier, Komal Tauqeer, Maria Toms, Bogdan Topko, N. Trevisani, Cedric Verstege, Tim Voigtländer, R. F. Von Cube, Jost Von Den Driesch, M. Wassmer, R. Wolf, Wolfram Dietrich Zeuner, Xunwu Zuo, G. Anagnostou, G. Daskalakis, A. Kyriakis, Georgios Melachroinos, Zacharias Painesis, I. Paraskevas, N. Saoulidou, K. Theofilatos, E. Tziaferi, E. Tzovara, Konstantinos Vellidis, Ilias Zisopoulos, Theodoros Chatzistavrou, Georgia Karapostoli, K. Kousouris, Eirini Siamarkou, G. Tsipolitis, Ioannis Bestintzanos, I. Evangelou, C. Foudas, Panagiotis Katsoulis, P. Kokkas, P. G. Kosmoglou Kioseoglou, Nikolaos Manthos, I. Papadopoulos, J. Strologas, Dmitry Druzhkin, Csaba Hajdu, Dezső Horváth, Krisztina Márton, Attila József Rádl, Ferenc Sikler, V. Veszprémi, M. Csanád, K. Farkas, Anna Fehérkuti, M. M. A. Gadallah, Ármin Kadlecsik, M. León Coello, G. Pásżtor, Gabor Istvan Veres, B. Ujvári, G. Zilizi, György Bencze, Sandor Czellar, József Molnár, Z. Szillási, T. Csörgő, F. Nemes, Tamás Novák, István Szanyi, S. Bansal, Suman Bala Beri, Vipin Bhatnagar, G. Chaudhary, Sushil Chauhan, N. Dhingra, Amandeep Kaur, Anureet Kaur, H. Kaur, M. Kaur, S. Kumar, Tanvi Sheokand, J. B. Singh, A. Singla, Ashutosh Bhardwaj, A. Chhetri, Brajesh C. Choudhary, Ashok Kumar, Arun Kumar, M. Naimuddin, Saumya Phor, K. Ranjan, Mahesh Kumar Saini, P. Palni, S. Acharya, B. Gomber, B. Sahu, Swagata Mukherjee, S. Bhattacharya, S. Das Gupta, S. Dutta, Suchandra Dutta, S. Sarkar, Mohammad Mobassir Ameen, P. K. Behera, Sayan Chatterjee, Ganapati Dash, A. Dattamunsi, Pranati Jana, P. Kalbhor, Samadhan Kamble, Jyothsna Rani Komaragiri, Tribeni Mishra, P. R. Pujahari, Anup Kumar Sikdar, Rohit Kumar Singh, P. Verma, S. Verma, Anusree Vijay, Bharat Kumar Sirasva, Lokesh Bhatt, Shashikant Dugad, G. B. Mohanty, Mukund Shelake, Pruthvi Suryadevara, A. Bala, S. Banerjee, S. Barman, Rajdeep Mohan Chatterjee, Monoranjan Guchait, Shilpi Jain, Atul Jaiswal, Bhargav Madhusudan Joshi, Sanjeev Kumar, M. Maity, Gobinda Majumder, K. Mazumdar, S. Parolia, Ritik Saxena, A. Thachayath, S. Bahinipati, Dipak Maity, Prolay Mal, K. Naskar, A. Nayak, Samarendra Nayak, Kuldeep Pal, Rishabh Raturi, Priyanka Sadangi, S. K. Swain, S. Varghese, D. Vats, Alpana Alpana, S. Dube, Prachurjya Hazarika, Bhumika Kansal, Arnab Laha, Riya Sharma, S. Sharma, Kumar Yash Vaish, S. Ghosh, H. Bakhshiansohi, A. Jafari, Vahid Sedighzadeh Dalavi, Maryam Zeinali, Sima Bashiri, S. Chenarani, Seyed Mohsen Etesami, Yasaman Hosseini, M. Khakzad, E. Khazaie, M. Mohammadi Najafabadi, Seddigheh Tizchang, M. Felcini, M. Grünewald, M. Abbrescia, Michele Barbieri, Marco Buonsante, A. Colaleo, D. Creanza, N. De Filippis, M. De Palma, W. Elmetenawee, N. Ferrara, L. Fiore, L. Longo, Magdy Louka, G. Maggi, M. Maggi, I. Margjeka, V. Mastrapasqua, S. My, Felice Nenna, S. Nuzzo, Antonello Pellecchia, A. Pompili, G. Pugliese, R. Radogna, Dayron Ramos, A. Ranieri, L. Silvestris, F. Simonetto, Anna Stamerra, Antonio Ranieri, Donato Troiano, R. Venditti, Piet Verwilligen, Angela Zaza, Carlo Battilana, Daniele Bonacorsi, P. Capiluppi, F. R. Cavallo, M. Cuffiani, G. M. Dallavalle, T. Diotalevi, F. Fabbri, Alessandra Fanfani, R. Farinelli, D. Fasanella, P. Giacomelli, C. Grandi, L. Guiducci, S. Lo Meo, Marco Lorusso, Leonardo Lunerti, S. Marcellini, G. Masetti, F. L. Navarria, Giulia Paggi, Andrea Perrotta, F. Primavera, A. M. Rossi, Simone Rossi Tisbeni, Gian Piero Siroli, S. Costa, A. Di Mattia, A. Lapertosa, R. Potenza, Alessia Tricomi, Jawaher Altork, P. Assiouras, Giuseppe Barbagli, G. Bardelli, M. Bartolini, A. Calandri, B. Camaiani, A. Cassese, R. Ceccarelli, Vitaliano Ciulli, C. Civinini, R. D’Alessandro, Lorenzo Damenti, E. Focardi, T. Kello, G. Latino, P. Lenzi, M. Lizzo, M. Meschini, S. Paoletti, Alkis Papanastassiou, G. Sguazzoni, L. Viliani, L. Benussi, Stefano Bianco, S. Meola, D. Piccolo, M. Alves Gallo Pereira, F. Ferro, E. Robutti, S. Tosi, A. Benaglia, F. Brivio, Valentina Camagni, F. Cetorelli, F. De Guio, M. E. Dinardo, P. Dini, S. Gennai, R. Gerosa, A. Ghezzi, P. Govoni, L. Guzzi, Mi Ran Kim, Giulia Lavizzari, M. T. Lucchini, M. Malberti, S. Malvezzi, A. Massironi, D. Menasce, L. Moroni, M. Paganoni, Simona Palluotto, Д. Педрини, Aurora Perego, Giorgio Pizzati, S. Ragazzi, T. Tabarelli de Fatis, S. Buontempo, Carlo Di Fraia, Francesco Fabozzi, Leonardo Favilla, Alberto Orso Maria Iorio, Luca Lista, Pierluigi Paolucci, B. Rossi, Patrizia Azzi, Nicola Bacchetta, M. Benettoni, P. Bortignon, Gabriele Bortolato, Andrea Claudio Maria Bulla, Roberto Carlin, P. Checchia, T. Dorigo, Fabrizio Gasparini, Ugo Gasparini, Sabrina Giorgetti, E. Lusiani, Martino Margoni, Anna Teresa Meneguzzo, J. Pazzini, P. Ronchese, R. Rossin, M. Tosi, Andrea Triossi, S. Ventura, M. Zanetti, P. Zotto, A. Zucchetta, Gianni Zumerle, Alessandro Braghieri, S. Calzaferri, P. Montagna, M. Pelliccioni, V. Re, C. Riccardi, P. Salvini, I. Vai, P. Vitulo, Sehar Ajmal, Maria Elena Ascioti, Gian Mario Bilei, Costanza Carrivale, D. Ciangottini, Luca Della Penna, L. Fanò, V. Mariani, M. Menichelli, F. Moscatelli, A. Rossi, A. Santocchia, D. Spiga, T. Tedeschi, C. Aimè, Cristina Andreea Alexe, P. Asenov, P. Azzurri, G. Bagliesi, Lorenzo Bianchini, T. Boccali, E. Bossini, L. Bianchini, L. Calligaris, Rino Castaldi, Filippo Cattafesta, M. A. Ciocci, Marco Cipriani, Roberto Dell'Orso, S. Donato, Ruben Forti, Alessandro Giassi, F. Ligabue, Andrea Carlo Marini, D. Matos Figueiredo, A. Messineo, S. Mishra, V. K. Muraleedharan Nair Bindhu, S. Nandan, F. Palla, Marco Riggirello, A. Rizzi, G. Rolandi, S. Roy Chowdhury, T. Sarkar, A. Scribano, Prabhat Solanki, P. Spagnolo, F. Tenchini, Р. Тенчини, G. Tonelli, N. Turini, Francesco Vaselli, A. Venturi, Piero Giorgio Verdini, Petra Akrap, Chiara Basile, S. C. Behera, F. Cavallari, L. Cunqueiro, Federica De Riggi, D. Del Re, Emanuele Di Marco, M. Diemoz, F. Errico, Lorenzo Frosina, Ruben Gargiulo, B. Harikrishnan, Federico Lombardi, E. Longo, L. Martikainen, Jelena Mijuskovic, Giovanni Organtini, Noemi Palmeri, R. Paramatti, S. Rahatlou, Chiara Rovelli, F. Santanastasio, L. Soffi, V. Vladimirov, N. Amapane, R. Arcidiacono, S. Argirò, M. Arneodo, N. Bartosik, R. Bellan, A. Bellora, C. Biino, Cecilia Borca, N. Cartiglia, Marco Costa, G. Cotto, R. Covarelli, N. Demaria, M. Ferrero, L. Finco, M. Grippo, B. Kiani, Leonardo Lanteri, F. Legger, F. Luongo, Chiara Mariotti, Silvia Maselli, A. Mecca, Luca Menzio, P. Meridiani, E. Migliore, M. Monteno, M. M. Obertino, Giacomo Ortona, L. Pacher, N. Pastrone, Marta Ruspa, F. Siviero, Valentina Sola, Ada Solano, C. Tarricone, D. Trocino, G. Umoret, R. White, J. Babbar, S. Belforte, Vieri Candelise, M. Casarsa, F. Cossutti, K. De Leo, G. Della Ricca, Raffaele Delli Gatti, S. Dogra, Jieun Hong, Jiwoong Kim, Taiwoo Kim, Dongyub Lee, Hakseong Lee, Jung‐Hyun Lee, S. W. Lee, C. S. Moon, Y. D. Oh, S. Sekmen, B. Tae, Y. Yang, M. S. Kim, Gyeonghwan Bak, Piljun Gwak, Hyunchul Kim, Dong Ho Moon, J. Seo, E. Asilar, Francesco Carnevali, J. Choi, T. J. Kim, Yeonsu Ryou, S. Ha, Seyoung Han, B. Hong, Jaebak Kim, Kisoo Lee, K. Lee, S. Lee, Jaehyeok Yoo, J. Goh, Jongwon Shin, S. Yang, Y. Kang, H. S. Kim, Y. Kim, Seungjun Lee, J. Almond, Ji Hwan Bhyun, Junho Choi, Jin Choi, Won Jun, H. Kim, Junho Kim, Taehee Kim, Yeonjoon Kim, Young Wan Kim, S. Ko, H. Lee, Joonbin Lee, J. Lee, Byung Hun Oh, S. B. Oh, Jihoon Shin, Unki Yang, I. Yoon, Woojin Jang, da Young Kang, D. Kim, Seulgi Kim, Byeonghak Ko, J. S. H. Lee, Yunjae Lee, Inkyu Park, Youn Roh, I. J. Watson, Guk Cho, Kyuyeong Hwang, Bobae Kim, Sungwon Kim, Kyeongpil Lee, H. D. Yoo, Y. Lee, Intae Yu, Taha Beyrouthy, Yousef Gharbia, F. Alazemi, K. Dreimanis, Ojars Martins Eberlins, Antra Gaile, Conrado Munoz Diaz, D. Osite, Guntis Pikurs, Robert Plese, Andris Potrebko, M. Seidel, Dimitrios Sidiropoulos Kontos, Normunds Ralfs Strautnieks, M. Ambrozas, A. Juodagalvis, Saulius Nargelas, A. Rinkevičius, Gintautas Tamulaitis, I. Yusuff, Zukhaimira Zolkapli, Jose F Benitez, A. Castaneda Hernandez, Hedwin Aaron Encinas Acosta, L. E. Cuevas Picos, H. A. Encinas Acosta, L. G. Gallegos Maríñez, J. A. Murillo Quijada, L. Valencia Palomo, Gabriel Ayala, H. Castilla-Valdez, Horacio Crotte Ledesma, R. López-Fernández, J. Mejia Guisao, R. Reyes-Almanza, A. Sánchez-Hernández, C. Oropeza Barrera, D. L. Ramirez Guadarrama, M. Ramirez-García, Irais Bautista, F. E. Neri Huerta, Isabel Pedraza, Humberto Antonio Salazar Ibarguen, C. Uribe Estrada, I. Bubanja, N. Raičević, P. H. 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Sosnov · 发表于：Journal of High Energy Physics · 年份：2026 · DOI：10.1007/jhep03(2026)189 · 被引用次数：1 · 研究领域：Particle physics theoretical and experimental studies、Computational Physics and Python Applications、Dark Matter and Cosmic Phenomena

A bstract A search for signatures of a dark analog to quantum chromodynamics is performed. The analysis targets long-lived dark mesons that decay into standard-model particles, with a high branching fraction of the dark mesons decaying into muons. The dark mesons are formed by the hadronisation of dark partons, which are produced by a decay of the Higgs boson. The search is performed using a data set corresponding to an integrated luminosity of 41.6 fb − 1 , which was collected in proton-proton collisions at $$ \sqrt{s}=13 $$ s = 13 TeV by the CMS experiment at the CERN LHC in 2018 using non-prompt muon triggers. The search is based on resonant muon pair signatures. Machine-learning techniques are employed in the analysis, utilising boosted decision trees to discriminate between signal and background. No significant excess is observed above the standard model expectation. Upper limits on the branching fraction of the Higgs boson decaying to dark partons are determined to be as low as 10 − 4 at 95% confidence level, surpassing and extending the existing limits on models with dark $$ \overset{\sim }{\upomega} $$ ω ~ mesons for mean proper decay lengths of less than 500 mm and for $$ \overset{\sim }{\upomega} $$ ω ~ masses down to 0.3 GeV. First limits are set for extended dark-shower models with two dark flavours that contain dark photons, probing their masses down to 0.33 GeV.