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Search for heavy neutral leptons in W+→μ+μ±jet decays
Roel Aaij, Carlos Abellán Beteta, Thomas Ackernley, Bernardo Adeva, Marco Adinolfi, Hossein Afsharnia, Christine Angela Aidala, Salvatore Aiola, Ziad Ajaltouni, Simon Akar, Johannes Albrecht, Federico Alessio
(+979 others)
2020
Preserved Fulltext
A search is performed for heavy neutrinos in the decay of a W boson into two muons and a jet. The data set corresponds to an integrated luminosity of approximately 3.0 fb −1 of proton-proton collision data at centre-of-mass energies of 7 and 8 TeV collected with the LHCb experiment. Both same-sign and opposite-sign muons in the final state are considered. Data are found to be consistent with the expected background. Upper limits on the coupling of a heavy neutrino with the Standard Model
doi:10.18154/rwth-2021-04300
fatcat:moiacuncvbamdczx2blactgi2q
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... o are set at 95% confidence level in the heavy-neutrino mass range from 5 to 50 GeV/c 2 . These are of the order of 10 −3 for lepton-number-conserving decays and of the order of 10 −4 for lepton-number-violating heavy-neutrino decays.
Citation
Roel Aaij, Carlos Abellán Beteta, Thomas Ackernley, Bernardo Adeva, Marco Adinolfi, Hossein Afsharnia, Christine Angela Aidala, Salvatore Aiola, Ziad Ajaltouni, Simon Akar, Johannes Albrecht, Federico Alessio, Michael Alexander, Alejandro Alfonso Albero, Zakariya Aliouche, Georgy Alkhazov, Paula Alvarez Cartelle, Sandra Amato, Yasmine Amhis, Liupan An, Lucio Anderlini, Aleksei Andreianov, Mirco Andreotti, Flavio Archilli, Alexander Artamonov, Marina Artuso, Kenenbek Arzymatov, Elie Aslanides, Michele Atzeni, Benjamin Audurier, Sebastian Bachmann, Marie Bachmayer, John Back, Sophie Baker, Pablo Baladron Rodriguez, Vladislav Balagura, Wander Baldini, Juan Baptista Leite, Roger Barlow, Sergey Barsuk, William Barter, Matteo Bartolini, Fedor Baryshnikov, Jan-Marc Basels, Giovanni Bassi, Baasansuren Batsukh, Alexander Battig, Aurelio Bay, Maik Becker, Franco Bedeschi, Ignacio Bediaga, Andrew Beiter, Vladislav Belavin, Samuel Belin, Violaine Bellee, Konstantin Belous, Ilia Belov, Ivan Belyaev, Giovanni Bencivenni, Eli Ben-Haim, Alexander Berezhnoy, Roland Bernet, Daniel Berninghoff, Harris Conan Bernstein, Claudia Bertella, Emilie Bertholet, Alessandro Bertolin, Christopher Betancourt, Federico Betti, Marc-Olivier Bettler, Iaroslava Bezshyiko, Srishti Bhasin, Jihyun Bhom, Lingzhu Bian, Martin Stefan Bieker, Simone Bifani, Pierre Billoir, Matthew Birch, Fionn Caitlin Ros Bishop, Andrea Bizzeti, Mikkel Bjørn, Michele Piero Blago, Thomas Blake, Frederic Blanc, Steven Blusk, Dana Bobulska, Valerio Bocci, Julian Alexander Boelhauve, Oscar Boente Garcia, Thomas Boettcher, Alexey Boldyrev, Alexander Bondar, Nikolay Bondar, Silvia Borghi, Maxim Borisyak, Martino Borsato, Jozef Tomasz Borsuk, Sonia Amina Bouchiba, Themistocles Bowcock, Alexandre Boyer, Concezio Bozzi, Matthew John Bradley, Svende Braun, Alexandre Brea Rodriguez, Michael Brodski, Jolanta Brodzicka, Arnau Brossa Gonzalo, Davide Brundu, Annarita Buonaura, Christopher Burr, Albert Bursche, Anatoly Butkevich, Jordy Sebastiaan Butter, Jan Buytaert, Wiktor Byczynski, Sandro Cadeddu, Hao Cai, Roberto Calabrese, Lukas Calefice, Liliet Calero Diaz, Stefano Cali, Ryan Calladine, Marta Calvi, Miriam Calvo Gomez, Patricia Camargo Magalhaes, Alessandro Camboni, Pierluigi Campana, Daniel Hugo Campora Perez, Angel Fernando Campoverde Quezada, Simone Capelli, Lorenzo Capriotti, Angelo Carbone, Giovanni Carboni, Roberta Cardinale, Alessandro Cardini, Ina Carli, Paolo Carniti, Leon David Carus, Kazuyoshi Carvalho Akiba, Adrian Casais Vidal, Gianluigi Casse, Marco Cattaneo, Giovanni Cavallero, Sara Celani, Jacopo Cerasoli, Abbie Jane Chadwick, Matthew George Chapman, Matthew Charles, Philippe Charpentier, Georgios Chatzikonstantinidis, Carlos Alberto Chavez Barajas, Maximilien Chefdeville, Chen Chen, Shanzhen Chen, Aleksei Chernov, Stefan-Gabriel Chitic, Veronika Chobanova, Serhii Cholak, Marcin Chrzaszcz, Alexsei Chubykin, Vladimir Chulikov, Paolo Ciambrone, Maria Flavia Cicala, Xabier Cid Vidal, Gregory Ciezarek, Peter Clarke, Marco Clemencic, Harry Cliff, Joel Closier, John Leslie Cobbledick, Victor Coco, Joao A. B. Coelho, Julien Cogan, Eric Cogneras, Lucian Cojocariu, Paula Collins, Tommaso Colombo, Liliana Congedo, Andrea Contu, Naomi Cooke, George Coombs, Gloria Corti, Cayo Mar Costa Sobral, Benjamin Couturier, Daniel Charles Craik, Jana Crkovská, Melissa Maria Cruz Torres, Robert Currie, Cesar Luiz Da Silva, Elena Dall'Occo, Jeremy Dalseno, Carmelo D'Ambrosio, Anna Danilina, Philippe d'Argent, Adam Davis, Oscar De Aguiar Francisco, Kristof De Bruyn, Stefano De Capua, Michel De Cian, Jussara M. De Miranda, Leandro De Paula, Marilisa De Serio, Dario De Simone, Patrizia De Simone, Jacco de Vries, Cameron Thomas Dean, William Dean, Daniel Decamp, Luigi Del Buono, Blaise Delaney, Hans Peter Dembinski, Adam Dendek, Vadym Denysenko, Denis Derkach, Olivier Deschamps, Fabrice Desse, Francesco Dettori, Biplab Dey, Pasquale Di Nezza, Sergey Didenko, Lorena Dieste Maronas, Hans Dijkstra, Vasyl Dobishuk, Amanda May Donohoe, Francesca Dordei, Mirco Dorigo, Alberto C. dos Reis, Lauren Douglas, Anatoliy Dovbnya, Anthony Gavin Downes, Karlis Dreimanis, Maciej Wojciech Dudek, Laurent Dufour, Viacheslav Duk, Paolo Durante, John Matthew Durham, Deepanwita Dutta, Michal Dziewiecki, Agnieszka Dziurda, Alexey Dzyuba, Sajan Easo, Ulrik Egede, Victor Egorychev, Semen Eidelman, Stephan Eisenhardt, Surapat Ek-In, Lars Eklund, Scott Ely, Alexandru Ene, Eliane Epple, Stephan Escher, Jonas Nathanael Eschle, Sevda Esen, Timothy Evans, Antonio Falabella, Jingzhou Fan, Yanting Fan, Bo Fang, Nathanael Farley, Stephen Farry, Davide Fazzini, Petr Fedin, Mauricio Féo, Placido Fernandez Declara, Antonio Fernandez Prieto, Jose Maria Fernandez-tenllado Arribas, Fabio Ferrari, Lino Ferreira Lopes, Fernando Ferreira Rodrigues, Silvia Ferreres Sole, Martina Ferrillo, Massimiliano Ferro-Luzzi, Sergey Filippov, Rosa Anna Fini, Massimiliano Fiorini, Miroslaw Firlej, Kamil Leszek Fischer, Conor Fitzpatrick, Tomasz Fiutowski, Frederic Fleuret, Marianna Fontana, Flavio Fontanelli, Roger Forty, Vinicius Franco Lima, Manuel Franco Sevilla, Markus Frank, Edoardo Franzoso, Giulia Frau, Christoph Frei, David Anthony Friday, Jinlin Fu, Quentin Fuehring, Wolfgang Funk, Emmy Gabriel, Tatiana Gaintseva, Abraham Gallas Torreira, Domenico Galli, Stefano Gallorini, Silvia Gambetta, Yuyue Gan, Miriam Gandelman, Paolo Gandini, Yuanning Gao, Michela Garau, Luis Miguel Garcia Martin, Paula Garcia Moreno, Julián García Pardiñas, Beatriz Garcia Plana, Felipe Andres Garcia Rosales, Lluis Garrido, David Gascon, Clara 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Christophe Haen, Jakob Haimberger, Susan Haines, Tabitha Halewood-leagas, Phoebe Meredith Hamilton, Qundong Han, Xiaoxue Han, Thomas Henry Hancock, Stephanie Hansmann-Menzemer, Neville Harnew, Thomas Harrison, Christoph Hasse, Mark Hatch, Jibo He, Malte Hecker, Kevin Heijhoff, Kevin Heinicke, Arthur Marius Hennequin, Karol Hennessy, Louis Henry, Johannes Heuel, Adlène Hicheur, Donal Hill, Martha Hilton, Sophie Elizabeth Hollitt, Plamen Hristov Hopchev, Jiangqiao Hu, Jifeng Hu, Wenhua Hu, Wenqian Huang, Xiaotao Huang, Wouter Hulsbergen, Ross John Hunter, Mikhail Hushchyn, David Hutchcroft, Daniel Hynds, Philipp Ibis, Marek Idzik, Dmitrii Ilin, Philip Ilten, Alexander Inglessi, Artur Ishteev, Kuzma Ivshin, Richard Jacobsson, Sune Jakobsen, Eddy Jans, Brij Kishor Jashal, Abolhassan Jawahery, Vukan Jevtic, Marek Jezabek, Feng Jiang, Malcolm John, Daniel Johnson, Christopher Jones, Thomas Peter Jones, Beat Jost, Nathan Jurik, Sergii Kandybei, Youen Kang, Matthias Karacson, James Mwangi 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Tully, Niels Tuning, Artur Ukleja, Daniel Joachim Unverzagt, Andrii Usachov, Andrey Ustyuzhanin, Ulrich Uwer, Alexander Vagner, Vincenzo Vagnoni, Andrea Valassi, Giovanni Valenti, Nuria Valls Canudas, Martinus van Beuzekom, Maarten Van Dijk, Hubert Van Hecke, Eric van Herwijnen, Charlotte Barbara Van Hulse, Maarten van Veghel, Ricardo Vazquez Gomez, Pablo Vazquez Regueiro, Carlos Vázquez Sierra, Stefania Vecchi, Jaap Velthuis, Michele Veltri, Aravindhan Venkateswaran, Michele Veronesi, Mika Vesterinen, Daniel Vieira, Maria Vieites Diaz, Harald Viemann, Xavier Vilasis-Cardona, Eva Vilella Figueras, Pascal Vincent, Giacomo Vitali, Achim Vollhardt, Dorothea Vom Bruch, Alexey Vorobyev, Vitaly Vorobyev, Nikolai Voropaev, Roland Waldi, John Walsh, Chishuai Wang, Jianqiao Wang, Jike Wang, Jialu Wang, Jianchun Wang, Mengzhen Wang, Rui Wang, Yilong Wang, Zhenzi Wang, David Ward, Heather Mckenzie Wark, Nigel Watson, Steffen Georg Weber, David Websdale, Constantin Weisser, Benedict Donald C. 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