Search for decays of the Higgs boson into scalar particles decaying into four or six $b$-quarks using $pp$ collisions at $\sqrt{s}= 13\,\mathrm{TeV}$ with the ATLAS detector
Georges Aad, Erlend Aakvaag, B. Abbott, Sara Abdelhameed, K. Abeling, Nils Julius Abicht, S. H. Abidi, Mohammed Aboelela, A. Aboulhorma, H. Abramowicz, Y. Abulaiti, B. S. Acharya, Anke Ackermann, C. Adam Bourdarios, L. Adamczyk, S. V. Addepalli, Matthew John Addison, J. Adelman, Aytul Adiguzel, T. Adye, A. A. Affolder, Yoav Afik, M. N. Agaras, A. Aggarwal, C. Agheorghiesei, F. Ahmadov, G. Aielli, A. V. Akimov, J. Albert, Pietro Albicocco, Z. L. Alegria, Martin Aleksa, C. Alexa, T. Alexopoulos, M. Alhroob, G. Alimonti, C. Allaire, Benedict Allbrooke, P. P. Allport, F. Alonso, C. Alpigiani, A. Ambler, Christoph Amelung, Dimitra Amperiadou, T. Andeen, Attilio Andreazza, S. Angelidakis, A. Angerami, A. V. Anisenkov, A. Annovi, C. Antel, M. Antonelli, Fabio Anulli, Ayana Tamu Arce, Jean-Francois Arguin, S. Argyropoulos, O. Arnaez, Hannah Arnold, Shoji Asai, Nedaa Alexandra Asbah, K. Assamagan, R. Astalos, Rose Atashi, R. J. Atkin, Hicham Atmani, K. Augsten, G. Avolio, G. Azuelos, H. Bachacou, K. Bachas, P. Bagnaia, M. Bahmani, J. T. Baines, Keith Baker, E. Bakos, Debottam Bakshi Gupta, E. M. Baldin, Fabrice Balli, William Keaton Balunas, Johannes Balz, E. Banaś, L. Barak, M. Barbero, Teresa Barillari, Tim Barklow, P. Baroň, Toni Baroncelli, A. J. Barr, F. Barreiro, João Barreiro Guimarães da Costa, Rainer Bartoldus, Adam Edward Barton, A. Bassalat, Souad Batlamous, Marco Battaglia, M. Bauce, T. Beau, P. H. Beauchemin, H. P. Beck, A. J. Beddall, V. A. Bednyakov, L. J. Beemster, M. Begalli, M. Begel, P. Bellos, Konstantin Beloborodov, D. Benchekroun, Lydia Audrey Beresford, M. Beretta, N. Berger, Benedikt Ludwig Bergmann, J. Beringer, G. Bernardi, Annalisa Berti, A. Betti, A. J. Bevan, Lucas Bezio, V. Bhopatkar, R. M. Bianchi, G. Bianco, Otmar Biebel, M. Biglietti, Sully Billingsley, Yassine Bimgdi, C. Bini, Ahmet Bingul, M. Birman, Tobias Bisanz, J. P. Biswal, D. Biswas, A. Blue, U. Blumenschein, V. S. Bobrovnikov, D. Bogavac, Laura Boggia, V. Boisvert, T. Bołd, Marco Bomben, M. Bóna, Maarten Boonekamp, G. Borissov, D. Bortoletto, D. Boscherini, M. Bosman, Joseph Boudreau, D. Boumediene, R. Bouquet, A. Boveia, Jamie Boyd, Diallo Boye, Igor Boyko, J. Braciník, N. Brahimi, G. Brandt, O. Brandt, B. Brau, J. E. Brau, Lydia Brenner, S. Bressler, D. Britton, G. Brooijmans, Jammel Brooks, Liza Brost, P. A. Bruckman de Renstrom, Alessia Bruni, G. Bruni, Marco Bruschi, N. Bruscino, Trygve Buanes, Quentin Buat, A. G. Buckley, O. Bulekov, S. Burdin, C. D. Burgard, Blake Oliver Burghgrave, Jon Burr, Volker Buescher, P. Bussey, J. M. Butler, C. M. Buttar, J. M. Butterworth, Will Buttinger, Alexey Buzykaev, S. Cabrera Urbán, D. Caforio, H. Cai, V. M. M. Cairo, Ö. Çakır, Noemi Calace, P. Calafiura, G. Calderini, Philippe Calfayan, G. Callea, Luiz Pereira Calôba, David Calvet, Samuel Calvet, R. Camacho Toro, S. Camarda, D. Camarero Munoz, P. Camarri, C. Camincher, M. Campanelli, A. Camplani, Vincenzo Canale, Josu Cantero Garcia, Y. Cao, M. Capua, Roberto Cardarelli, T. Carli, G. Carlino, Leonardo Carminati, S. Carrá, Pilar Casado Lechuga, Nanni Crosetti, Nanni Darbo, Nikolai Krug, P. J. Hsu, Djemal Khubua, Daniela Köck, F. L. Castillo, N. F. Castro, A. Catinaccio, James Catmore, Viviana Cavaliere, Emre Celebi, K. Černý, A. Cerri, L. Cerrito, F. Cerutti, A. Cervelli, S. A. Çetin, Snigdho Chakraborty, Xiang Chen, John Derek Chapman, Dave Charlton, Alexander Cheplakov, Sergei Chekanov, S. V. Chekulaev, Jing Chen, Shion Chen, Shenjian Chen, H. Chen, E. Cheremushkina, E. Cheu, Kingman Cheung, L. Chevalier, V. Chiarella, G. Chiarelli, G. Chiodini, A. S. Chisholm, A. Chitan, K. Choi, Michael Kwok Lam Chu, M. C. Chu, J. J. Chwastowski, V. Cindro, Alessandra Ciocio, F. Cirotto, Z. H. Citron, Mauro Citterio, Dan Andrei Ciubotaru, A. Clark, P. J. Clark, S. E. Clawson, Christophe Clément, Y. Coadou, A. Coccaro, Brian Andrew Cole, Johann Collot, Maria Rita Coluccia, P. Conde Muíño, Matt Connell, Simon Connell, F. Conventi, A. M. Cooper-Sarkar, Louie Dartmoor Corpe, Massimo Corradi, F. Corriveau, Maria Jose Costa Mezquita, D. Costanzo, Glen Cowan, K. Cranmer, Sabine Chrystel Crepe-Renaudin, V. Croft, A. Cueto, C. Da Vià, W. Dąbrowski, T. Dado, S. Dahbi, T. Dai, C. Dallapiccola, M. Dam, G. D’amen, Jeff Dandoy, D. Dannheim, M. Danninger, Antonio d'Avanzo, T. Davídek, Joel Davidson, I. Dawson, L. Delagrange, Riccardo de Asmundis, S. De Castro, Nicolo de Groot, Paul de Jong, H. De la Torre, Alessandro de Salvo, Dmitri Dedovich, Allison Mccarn Deiana, J. Del Peso, F. Déliot, C. M. Delitzsch, Massimo Della Pietra, Domenico Della Volpe, A. Dell’Acqua, L. Dell’Asta, Marco Delmastro, P. A. Delsart, S. Demers, S. P. Denisov, L. D’Eramo, D. Derendarz, Paul Dervan, Klaus Desch, Anna Di Ciaccio, Lucia Di Ciaccio, Antonio Di Domenico, Camilla Di Donato, A. Di Girolamo, G. Di Gregorio, A. Di Luca, Biagio Di Micco, R. Di Nardo, K. F. Di Petrillo, F. A. Dias, Mariia Didenko, Edward Diehl, Sergio Diez Cornell, C. Dimitriadi, Aleksandra Dimitrievska, J. Dingfelder, Thomas Benjamin Dingley, Sebastian Dittmeier, Fido Dittus, F. Djama, T. Djobava, Zdenek Dolezal, Marisilvia Donadelli, Julien Noce Donini, Adelina d'Onofrio, M. D’Onofrio, J. Dopke, Alessandra Doria, Tony Doyle, Etienne Dreyer, Filipp Dubinin, M. Dubovsky, Ehud Duchovni, Philippa Kathryn Duckett, O. A. Ducu, D. Duda, L. Duflot, Michael Duehrssen-Debling, M. Dunford, A. Duperrin, Michael Johannes Dueren, A. Durglishvili, Damir Duvnjak, B. L. Dwyer, G. Eigen, K. Einsweiler, Tord Ekelof, H. El Jarrari, A. El Moussaouy, V. Ellajosyula, M. Ellert, F. Ellinghaus, Nick Ellis, Dmitry Emeliyanov, Florian Ernst, M. Escalier, Erez Etzion, Hal Evans, Federica Fabbri, L. Fabbri, Gabriel Facini, Rinat Fakhrutdinov, Speranza Falciano, Gregorio Falsetti, M. Fanti, Ada Farilla, T. Farooque, S. M. Farrington, F. Fassi, D. Fassouliotis, Pavol Federic, Oleg Fedin, Matthew Feickert, Cunfeng Feng, M. J. Fenton, James Ferrando, A. Ferrari, P. Ferrari, R. Ferrari, D. Ferrère, Claudio Ferretti, Frank Fiedler, Andrej Filipčič, F. Filthaut, Luca Fiorini, W. C. Fisher, T. Fitschen, Peter Michael Fitzhugh, Ivor Fleck, P. Fleischmann, T. Flick, M. Flores, Luis Roberto Flores Castillo, F. M. Follega, Nikolai Fomin, A. Formica, Alessandra Forti, Liam Foster, L. Fountas, D. Fournier, H. Fox, Paolo Francavilla, Silvia Franchino, David Francis, L. Franconi, M. Franklin, G. Frattari, A. Froch, Daniel Froidevaux, James Frost, A. Gabrielli, P. Gadow, G. Gagliardi, L. G. Gagnon, Elizabeth Gallas, Axel Gallén, Bruce Joseph Gallop, S. Ganguly, C. Gay, C. Garcı́a, Maurice Garcia-Sciveres, N. Garelli, Christopher Andrew Garner, Veritas Katharina Gassmann, Viveka Gautam, Colin Warren Gay, Goetz Gaycken, E. N. Gazis, Alex Gekow, Claudia Gemme, M. H. Genest, Simon George, Theodoros Geralis, B. Giacobbe, A. Giannini, S. M. Gibson, M. Gignac, Benjamin Jacob Gilbert, Dag Gillberg, G. Gilles, M. P. Giordani, Pierre-Francois Giraud, G. Giugliarelli, D. Giugni, F. Giuli, I. Gkialas, Leonid Gladilin, Marija Glisic, S. Goldfarb, T. Golling, Dmitry Golubkov, Agostinho da Silva Gomes, Ricardo Jose Morais Silva Goncalo, L. Gonella, Francesco Gonnella, J. L. Gonski, L. Goossens, Benedetto Gorini, E. Gorini, A. Gorišek, Mikhail Gostkin, M. Gouighri, Anna Goussiou, E. Gramstad, S. Grancagnolo, Charles Michael Grant, P. M. Gravila, F. G. Gravili, H. M. Gray, C. Grefe, P. Grenier, Simon Gabriel Grewe, Alex Grillo, J.-F. Grivaz, E. Gross, Joern Grosse-Knetter, Ralf Gugel, S. Guindon, Jun Guo, Saime Gurbuz, G. Gustavino, Phillip Gutierrez, C. Gwenlan, C. Haber, Haleh Hadavand, Mahsana Haleem, J. Haley, Gregory Hallewell, Kenji Hamano, M. Hamer, Emily Hampshire, L. Han, K. Hanagaki, Mike Hance, P. Hansen, Torsten Harenberg, Siarhei Harkusha, Paul Fraser Harrison, Yoji Hasegawa, Reiner Hauser, Chris Hawkes, Richard Hawkings, Daniel Hayden, Robin Hayes, C. P. Hays, Helen Hayward, Y. He, Nathan Heatley, C. Heidegger, Kim Katrin Heidegger, J. Heilman, S. Heim, T. Heim, J. J. Heinrich, L. Heinrich, Jiri Hejbal, Simen Hellesund, C. M. Helling, Sten Hellman, Ana Maria Henriques Correia, H. Herde, Yesenia Hernandez Jimenez, Gregor Herten, R. Hertenberger, Luis Hervas, Nigel Hessey, E. Hill, S. J. Hillier, F. Hinterkeuser, S. Hirose, Dominic Hirschbuehl, Bojan Hiti, J. Hobbs, M. C. Hodgkinson, Andreas Hoecker, Michael Holzbock, B. P. Honan, Tae Min Hong, B. H. Hooberman, Walter Hopkins, Yasuyuki Horii, S.R. Hou, A. S. Howard, J. Howarth, Miroslav Hrabovsky, Alex Christopher Martynwood, Millie Mcdonald, Bill Murray, Kristina Mihule, Joni Pham, S.‐C. Hsu, Qipeng Hu, Yanping Huang, Zuchen Huang, Michael Hübner, Fabian Huegging, T. B. Huffman, Mika Huhtinen, Charles Elliott Hultquist, N. Huseynov, J. Huston, J. Huth, R. Hyneman, G. Iacobucci, G. Iakovidis, R. Iguchi, Tomoya Iizawa, Y. Ikegami, James Inglis, M. Iodice, Masaya Ishino, Wasikul Islam, Ç. İşsever, Serhat Istin, R. Iuppa, A. Ivina, Vincenzo Izzo, P. Jacka, K. Jakobs, T. Jakoubek, J. Jamieson, Martina Javurkova, Juansher Jejelava, P. Jenni, J. Jia, Javier Jimenez Pena, Shan Jin, A. Jinaru, O. Jinnouchi, Per Daniel Conny Johansson, Kenneth Johns, Kyle Scott Jones, Roger Jones, Tim Jones, J. Jovicevic, X. Ju, J. J. Junggeburth, Sonia Kabana, Harris Kagan, Michael Kagan, C. Kahra, T. Kaji, Enrique Kajomovitz Must, N. J. Kang, E. Karentzos, Vato Kartvelishvili, Andrey Karyukhin, Tatsuo Kawamoto, E. F. Kay, S. Kazakos, V. F. Kazanin, J. Keaveney, J. J. Kempster, O. Kepka, B. P. Kerševan, Raees Ahmad Khan, Alexander Khanov, Alexey Kharlamov, E. E. Khoda, T. J. Khoo, Youssef Khoulaki, Beatty Kibirige, D. W. Kim, Young-Kee Kim, Naoki Kimura, C. Kirfel, J. Kirk, Andrei Kiryunin, O. Kivernyk, M. Klein, U. Klein, Alexei Klimentov, Tatiana Klioutchnikova, P. Kluit, Stefan Kluth, E. Kneringer, A. Knue, Martin Kocian, Thomas Koffas, I. Koletsou, T. Kono, N. Konstantinidis, Balázs Kónya, R. Kopeliansky, S. Koperny, K. Korcyl, A. Korn, Ilya Korolkov, Natalia Korotkova, O. Kortner, V. V. Kostyukhin, A. Koulouris, Athina Kourkoumeli-Charalampidi, R. Kowalewski, Witold Kozanecki, Anatoli Kozhin, Viktor Kramarenko, Gregor Kramberger, M. W. Krasny, Attila Krasznahorkay, Jakub Kremer, J. Kretzschmar, Peter Krieger, Karol Krizka, K. Kroeninger, Hubert Kroha, Jiri Kroll, Ira Joseph Kroll, Uladzimir Kruchonak, N. Krumnack, Mark Kruse, Sinan Kuday, Susanne Kuehn, Roman Kusters, Victor Kukhtin, Serguei Kuleshov, Judith Kull, M. Kumar, A. Kupčo, T. Kupfer, A. Kupich, Hisaya Kurashige, L. L. Kurchaninov, Y. A. Kurochkin, Anastasia Kurova, M. Kuze, A. K. Kvam, J. Kvita, C. Lacasta, F. Lacava, Heiko Markus Lacker, Didier Lacour, E. Ladygin, Bertrand Laforge, Theodota Lagouri, S. Lai, Sabine Wedam Lammers, Ulrich Landgraf, Valérie Lang, Oda Kristin Berg Langrekken, A. J. Lankford, F. Lanni, Kerstin Lantzsch, Agostino Lanza, Jean-Francois Laporte, T. Lari, Federico Lasagni Manghi, M. Lassnig, M. Lazzaroni, C. Leggett, Giovanna Lehmann Miotto, Matthew Leigh, W. A. Leight, Anthony Leisos, Huanguo Li, K. J. C. Leney, Tatjana Lenz, Sandra Leone, C. Leonidopoulos, Alexander Leopold, C. G. Lester, M. Levchenko, Jessica Levêque, D. J. Lewis, Hsuan-Chu Lien, Hui-Chi Lin, J. H. Lindon, Jerry Ling, A. Lister, Danning Liu, Dongyi Liu, Zhijun Liang, B. Liberti, Q. Liu, Anna Lipniacka, J. D. Little, Bo Liu, B. Liu, Kun Liu, Yang Liu, M. Lu, Sicong Lu, Yun-Ju Lu, Steve Lloyd, E. Lobodzinska, Thomas Lohse, Kristin Lohwasser, J. D. Long, R. Longo, Martha Alice Losada, Xinchou Lou, Peter Love, Claudio Luci, Fred Luehring, Olof Lundberg, Adam Brayton Lux, David Lynn, R. Lysák, Else Lytken, V. Lyubushkin, Tatiana Lyubushkina, V. P. Maleev, M. Mali, Yanhui Ma, R. Madar, Thandikire Madula, J. Maeda, Klaudia Maj, S. Majewski, N. Makovec, Bogdan Malaescu, Jan Malamant, Usha Mallik, Sergey Malyukov, J. Mamuzic, G. Mancini, Igor Mandic, S. Manzoni, Giovanni Marchiori, Michal Marcisovsky, C. Marcon, M. 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Pastore, Pragati Patel, Thilo Pauly, M. Pedersen, R. Pedro, S. V. Peleganchuk, O. Penc, D. V. Perepelitsa, H. Pernegger, Sabrina Perrella, Reinhild Peters, Brian Petersen, Troels Petersen, Elisabeth Petit, Mariel Pettee, Gianantonio Pezzullo, Peter Phillips, G. Piacquadio, E. Pianori, R. Piegaia, D. Pietreanu, Andrew Pilkington, Luca Pizzimento, V. Pleskot, Ruth Pöttgen, Giacomo Polesello, A. Polini, Chris Pollard, Z. B. Pollock, Ludovico Pontecorvo, S. Popa, Aleksandra Poreba, Karolos Potamianos, I. N. Potrap, H. Potti, D. Price, Radek Privara, M. L. Proffitt, Nadezhda Proklova, Kirill Prokofiev, Jimmy Proudfoot, M. Przybycień, J. Qian, Quake Qin, M. Queitsch-Maitland, Francesco Ragusa, J. A. Raine, S. Rajagopalan, Ian Alejandro Ramirez-Berend, K. Ran, H. Rasheed, B. Ravina, Ilia Ravinovich, M. Raymond, Nathan Peter Readioff, D. M. Rebuzzi, K. Reeves, David Reikher, Amartya Rej, Adam Rennie, Silvia Resconi, Elliot Reynolds, P. Řezníček, Elzbieta Richter-Was, M. Rijssenbeek, G. Ripellino, Imma Riu, Flera Rizatdinova, E. Rizvi, Dave Robinson, A. Robson, Alessandro Rocchi, Anatoli Romaniouk, M. Romano, N. Rompotis, L. Roos, Benjamin John Rosser, Elvira Rossi, E. Rossi, Lorenzo Rossini, M. Rotaru, Benjamin Rottler, D. Rousseau, A. Rozanov, Y. Rozen, T. A. Ruggeri, A. Ruggiero, A. Rummler, Z. Rurikova, N. A. Rusakovich, H. L. Russell, J. P. Rutherfoord, A. Ryzhov, H. F-W. Sadrozinski, S. Saha, Merve Sahinsoy, A. Saibel, M. Saimpert, M. Saito, Jose Salt, Fabrizio Salvatore, A. Salzburger, D. Sammel, D. Sampsonidis, D. Sampsonidou, C. O. Sander, Marisa Sandhoff, D. P. C. Sankey, Andrea Sansoni, C. Santoni, Helena Santos, A. Santra, J. Sardain, O. Sasaki, K. Satô, E. Sauvan, Pierre Savard, R. Sawada, C. Sawyer, L. Sawyer, C. Sbarra, Timothy Paul Scanlon, J. Schaarschmidt, Uli Schaefer, R.D Schaffer, D. Schaile, R. D. Schamberger, Meinrad Moritz Schefer, Valery Chtcheguelski, Daniel Scheirich, M. Schernau, C. Scheulen, C. Schiavi, M. 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Wang, Chaowaroj Wanotayaroj, Alan Watson, Gordon Watts, B. M. Waugh, C. Weber, M. Weber, Chuanshun Wei, Anthony Weidberg, E. J. Weik, J. Weingarten, C. Weiser, Craig John Wells, Torre Wenaus, T. Wengler, Nina Stephanie Wenke, A. M. Wharton, Aaron White, Daniel Whiteson, W. Wiedenmann, M. Wielers, C. Wiglesworth, H. G. Wilkens, Hugh Williams, Sarah Louise Williams, S. Willocq, P. J. Windischhofer, Frank Winklmeier, M. Wittgen, Markus Wobisch, Julian Wollrath, M. W. Wolter, H. Wolters, Marcus Clark Wong, Barbara Krystyna Wosiek, K. W. Woźniak, K. Wraight, Jian Wu, S. L. Wu, Terry Wyatt, Benjamin Michael Wynne, S. Xella, Ligang Xia, Da Xu, Lailin Xu, T. Xu, Zhongyukun Xu, S. Yacoob, Y. Yamaguchi, Hiroki Yamauchi, T. Yamazaki, Y. Yamazaki, Zhen Yan, Haijun Yang, Xuan Yang, Yi-Lin Yang, Yifan Yang, W. M. Yao, Jingbo Ye, Ivan Yeletskikh, K. Yorita, C. Young, Nathan Young, Rui Yuan, Bartlomiej Henryk Zabinski, Zhengguo Zhao, T. Zakareishvili, Stefano Zambito, D. Zanzi, C. Zeitnitz, O. Zenin, S. Zenz, D. F. Zhang, Xuai Zhuang, Jie Zhang, K. Zhang, Lei Zhang, Y. Zhang, Yixiang Zhang, Z. Zhang, Zhuolin Zhang, H. Zhao, T. Zhao, Y. Zhao, Zihan Zhao, A. Zhemchugov, J. Zheng, Kai Zheng, Xiangxuan Zheng, Zhi Zheng, Bing Zhou, Hao Zhou, N. Zhou, Yong Zhou, Yan Zhou, Y. Zhou, C. G. Zhu, J. Zhu, Xuliang Zhu, Y. Zhu, Yingchun Zhu, Konstantin Zhukov, Nikolai Zimine, J. Zinsser, Michal Ziolkowski, K. Zoch, T. G. Zorbas, Lukasz Zwalinski
Résumé fourni par la source
A search for exotic decays of the Higgs boson $H$ into new scalar or pseudoscalar particles that subsequently decay into $b$-quarks is presented. The search considers $ZH$ production with several decay scenarios for the Higgs boson: first to a pair of identical scalars, $H\rightarrow 2a \rightarrow 4b$, second to a pair of scalars with different masses ($m_{a1} +m_{a2}$), either directly, $H\rightarrow a_1a_2 \rightarrow 4b$, or via a longer decay chain, $H \rightarrow a_1a_2 \rightarrow 3a_1 \rightarrow 6b$. The analysis uses proton-proton collision data at $\sqrt{s} = 13$ TeV collected with the ATLAS detector at the Large Hadron Collider, corresponding to an integrated luminosity of $140~\mathrm{fb}^{-1}$. No significant excess above the Standard Model prediction is observed. The search sets upper limits at 95% confidence level on the ratio of the Higgs boson production cross-section to the SM prediction times the branching ratio of Higgs bosons decaying into $4b$ or $6b$, between 4% and 25% for $σ(ZH)/σ_{\text{SM}}(ZH) \times \mathcal{B}$($H \rightarrow 2a \rightarrow 4b$), between 24% and 38% for $σ(ZH)/σ_{\text{SM}}(ZH) \times \mathcal{B}$($H \rightarrow a_1a_2 \rightarrow 4b$), and between 10% and 20% for $σ(ZH)/σ_{\text{SM}}(ZH) \times \mathcal{B}$($H \rightarrow a_1a_2 \rightarrow 3a_1 \rightarrow 6b$), depending on the masses of the scalar particles.
Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.
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