Test of the universality of tau and mu lepton couplings in W-boson decays with the ATLAS detector

G Aad; B Abbott; DC Abbott; A Abed Abud; K Abeling; DK Abhayasinghe; SH Abidi; OS AbouZeid; NL Abraham; H Abramowicz; H Abreu; Y Abulaiti; BS Acharya; B Achkar; L Adam; C Adam Bourdarios; L Adamczyk; L Adamek; J Adelman; M Adersberger; A Adiguzel; S Adorni; T Adye; AA Affolder; Y Afik; C Agapopoulou; MN Agaras; A Aggarwal; C Agheorghiesei; JA Aguilar-Saavedra; A Ahmad; F Ahmadov; WS Ahmed; X Ai; G Aielli; S Akatsuka; M Akbiyik; TPA Akesson; E Akilli; A Akimov; K Al Khoury; GL Alberghi; J Albert; MJ Alconada Verzini; S Alderweireldt; M Aleksa; IN Aleksandrov; C Alexa; T Alexopoulos; A Alfonsi; F Alfonsi; M Alhroob; B Ali; S Ali; M Aliev; G Alimonti; C Allaire; BMM Allbrooke; BW Allen; PP Allport; A Aloisio; F Alonso; C Alpigiani; E Alunno Camelia; M Alvarez Estevez; MG Alviggi; Y Amaral Coutinho; A Ambler; L Ambroz; C Amelung; D Amidei; SP Amor Dos Santos; S Amoroso; CS Amrouche; F An; C Anastopoulos; N Andari; T Andeen; JK Anders; SY Andrean; A Andreazza; V Andrei; CR Anelli; S Angelidakis; A Angerami; A Anisenkov; A Annovi; C Antel; MT Anthony; E Antipov; M Antonelli; DJA Antrim; F Anulli; M Aoki; JA Aparisi Pozo; MA Aparo; L Aperio Bella; N Aranzabal; V Araujo Ferraz; R Araujo Pereira; C Arcangeletti; ATH Arce; FA Arduh; J-F Arguin; S Argyropoulos; J-H Arling; AJ Armbruster; A Armstrong; O Arnaez; H Arnold; ZP Arrubarrena Tame; G Artoni; H Asada; K Asai; S Asai; T Asawatavonvanich; N Asbah; EM Asimakopoulou; L Asquith; J Assahsah; K Assamagan; R Astalos; RJ Atkin; M Atkinson; NB Atlay; H Atmani; K Augsten; VA Austrup; G Avolio; MK Ayoub; G Azuelos; H Bachacou; K Bachas; F Backman; P Bagnaia; M Bahmani; H Bahrasemani; AJ Bailey; VR Bailey; JT Baines; C Bakalis; OK Baker; PJ Bakker; E Bakos; D Bakshi Gupta; S Balaji; R Balasubramanian; EM Baldin; P Balek; F Balli; WK Balunas; J Balz; E Banas; M Bandieramonte; A Bandyopadhyay; Sw Banerjee; L Barak; WM Barbe; EL Barberio; D Barberis; M Barbero; G Barbour; T Barillari; M-S Barisits; J Barkeloo; T Barklow; R Barnea; BM Barnett; RM Barnett; Z Barnovska-Blenessy; A Baroncelli; G Barone; AJ Barr; L Barranco Navarro; F Barreiro; J Barreiro Guimaraes da Costa; U Barron; S Barsov; F Bartels; R Bartoldus; G Bartolini; AE Barton; P Bartos; A Basalaev; A Basan; A Bassalat; MJ Basso; RL Bates; S Batlamous; JR Batley; B Batool; M Battaglia; M Bauce; F Bauer; P Bauer; HS Bawa; A Bayirli; JB Beacham; T Beau; PH Beauchemin; F Becherer; P Bechtle; HC Beck; HP Beck; K Becker; C Becot; A Beddall; AJ Beddall; VA Bednyakov; M Bedognetti; CP Bee; TA Beermann; M Begalli; M Begel; A Behera; JK Behr; F Beisiegel; M Belfkir; AS Bell; G Bella; L Bellagamba; A Bellerive; P Bellos; K Beloborodov; K Belotskiy; NL Belyaev; D Benchekroun; N Benekos; Y Benhammou; DP Benjamin; M Benoit; JR Bensinger; S Bentvelsen; L Beresford; M Beretta; D Berge; E Bergeaas Kuutmann; N Berger; B Bergmann; LJ Bergsten; J Beringer; S Berlendis; G Bernardi; C Bernius; FU Bernlochner; T Berry; P Berta; A Berthold; IA Bertram; O Bessidskaia Bylund; N Besson; A Bethani; S Bethke; A Betti; AJ Bevan; J Beyer; DS Bhattacharya; P Bhattarai; VS Bhopatkar; R Bi; RM Bianchi; O Biebel; D Biedermann; R Bielski; K Bierwagen; N Biesuz; M Biglietti; TR Billoud; M Bindi; A Bingul; C Bini; S Biondi; CJ Birch-sykes; M Birman; T Bisanz; JP Biswal; D Biswas; A Bitadze; C Bittrich; K Bjorke; T Blazek; I Bloch; C Blocker; A Blue; U Blumenschein; GJ Bobbink; VS Bobrovnikov; SS Bocchetta; D Bogavac; AG Bogdanchikov; C Bohm; V Boisvert; P Bokan; T Bold; AE Bolz; M Bomben; M Bona; JS Bonilla; M Boonekamp; CD Booth; AG Borbely; HM Borecka-Bielska; LS Borgna; A Borisov; G Borissov; D Bortoletto; D Boscherini; M Bosman; JD Bossio Sola; K Bouaouda; J Boudreau; E Bouhova-Thacker; D Boumediene; A Boveia; J Boyd; D Boye; IR Boyko; AJ Bozson; J Bracinik; N Brahimi; G Brandt; O Brandt; F Braren; B Brau; JE Brau; WD Breaden Madden; K Brendlinger; R Brener; L Brenner; R Brenner; S Bressler; B Brickwedde; DL Briglin; D Britton; D Britzger; I Brock; R Brock; G Brooijmans; WK Brooks; E Brost; PA Bruckman de Renstrom; B Bruers; D Bruncko; A Bruni; G Bruni; M Bruschi; N Bruscino; L Bryngemark; T Buanes; Q Buat; P Buchholz; AG Buckley; IA Budagov; MK Bugge; F Buhrer; O Bulekov; BA Bullard; TJ Burch; S Burdin; CD Burgard; AM Burger; B Burghgrave; JTP Burr; CD Burton; JC Burzynski; V Buescher; E Buschmann; PJ Bussey; JM Butler; CM Buttar; JM Butterworth; P Butti; W Buttinger; CJ Buxo Vazquez; A Buzatu; AR Buzykaev; G Cabras; S Cabrera Urban; D Caforio; H Cai; VMM Cairo; O Cakir; N Calace; P Calafiura; G Calderini; P Calfayan; G Callea; LP Caloba; A Caltabiano; S Calvente Lopez; D Calvet; S Calvet; TP Calvet; M Calvetti; R Camacho Toro; S Camarda; D Camarero Munoz; P Camarri; MT Camerlingo; D Cameron; C Camincher; S Campana; M Campanelli; A Camplani; V Canale; A Canesse; M Cano Bret; J Cantero; T Cao; Y Cao; MDM Capeans Garrido; M Capua; R Cardarelli; F Cardillo; G Carducci; I Carli; T Carli; G Carlino; BT Carlson; EM Carlson; L Carminati; RMD Carney; S Caron; E Carquin; S Carra; G Carratta; JWS Carter; TM Carter; MP Casado; AF Casha; EG Castiglia; FL Castillo; L Castillo Garcia; V Castillo Gimenez; NF Castro; A Catinaccio; JR Catmore; A Cattai; V Cavaliere; V Cavasinni; E Celebi; F Celli; K Cerny; AS Cerqueira; A Cerri; L Cerrito; F Cerutti; A Cervelli; SA Cetin; Z Chadi; D Chakraborty; J Chan; WS Chan; WY Chan; JD Chapman; B Chargeishvili; DG Charlton; TP Charman; M Chatterjee; CC Chau; S Che; S Chekanov; S Chekulaev; GA Chelkov; B Chen; C Chen; CH Chen; H Chen; H Chen; J Chen; J Chen; J Chen; S Chen; SJ Chen; X Chen; Y Chen; Y-H Chen; HC Cheng; HJ Cheng; A Cheplakov; E Cheremushkina; R Cherkaoui El Moursli; E Cheu; K Cheung; TJA Chevalerias; L Chevalier; V Chiarella; G Chiarelli; G Chiodini; AS Chisholm; A Chitan; I Chiu; YH Chiu; M Chizhov; K Choi; AR Chomont; YS Chow; LD Christopher; MC Chu; X Chu; J Chudoba; JJ Chwastowski; L Chytka; D Cieri; KM Ciesla; V Cindro; A Ciocio; F Cirotto; ZH Citron; M Citterio; DA Ciubotaru; BM Ciungu; A Clark; MR Clark; PJ Clark; SE Clawson; C Clement; Y Coadou; M Cobal; A Coccaro; J Cochran; R Coelho Lopes De Sa; H Cohen; AEC Coimbra; B Cole; AP Colijn; J Collot; P Conde Muino; SH Connell; IA Connelly; S Constantinescu; F Conventi; AM Cooper-Sarkar; F Cormier; KJR Cormier; LD Corpe; M Corradi; EE Corrigan; F Corriveau; MJ Costa; F Costanza; D Costanzo; G Cowan; JW Cowley; J Crane; K Cranmer; RA Creager; S Crepe-Renaudin; F Crescioli; M Cristinziani; V Croft; G Crosetti; A Cueto; T Cuhadar Donszelmann; H Cui; AR Cukierman; WR Cunningham; S Czekierda; P Czodrowski; MM Czurylo; MJ Da Cunha Sargedas De Sousa; J Da Fonseca Pinto; C Da Via; W Dabrowski; F Dachs; T Dado; S Dahbi; T Dai; C Dallapiccola; M Dam; G D'amen; V D'Amico; J Damp; JR Dandoy; MF Daneri; M Danninger; V Dao; G Darbo; O Dartsi; A Dattagupta; T Daubney; S D'Auria; C David; T Davidek; DR Davis; I Dawson; K De; R De Asmundis; M De Beurs; S De Castro; N De Groot; P de Jong; H De la Torre; A De Maria; D De Pedis; A De Salvo; U De Sanctis; M De Santis; A De Santo; JB De Vivie De Regie; D Dedovich; AM Deiana; J Del Peso; Y Delabat Diaz; D Delgove; F Deliot; CM Delitzsch; M Della Pietra; D Della Volpe; A Dell'Acqua; L Dell'Asta; M Delmastro; C Delporte; PA Delsart; DA DeMarco; S Demers; M Demichev; G Demontigny; SP Denisov; L D'Eramo; D Derendarz; JE Derkaoui; F Derue; P Dervan; K Desch; K Dette; C Deutsch; MR Devesa; PO Deviveiros; FA Di Bello; A Di Ciaccio; L Di Ciaccio; WK Di Clemente; C Di Donato; A Di Girolamo; G Di Gregorio; B Di Micco; R Di Nardo; KF Di Petrillo; R Di Sipio; C Diaconu; FA Dias; T Dias Do Vale; MA Diaz; FG Diaz Capriles; J Dickinson; M Didenko; EB Diehl; J Dietrich; S Diez Cornell; C Diez Pardos; A Dimitrievska; W Ding; J Dingfelder; SJ Dittmeier; F Dittus; F Djama; T Djobava; J Djuvsland; MAB Do Vale; M Dobre; D Dodsworth; C Doglioni; J Dolejsi; Z Dolezal; M Donadelli; B Dong; J Donini; A D'onofrio; M D'Onofrio; J Dopke; A Doria; MT Dova; AT Doyle; E Drechsler; E Dreyer; T Dreyer; AS Drobac; D Du; TA du Pree; Y Duan; F Dubinin; M Dubovsky; A Dubreuil; E Duchovni; G Duckeck; OA Ducu; D Duda; A Dudarev; AC Dudder; EM Duffield; M D'uffizi; L Duflot; M Duehrssen; C Duelsen; M Dumancic; AE Dumitriu; M Dunford; A Duperrin; H Duran Yildiz; M Dueren; A Durglishvili; D Duschinger; B Dutta; D Duvnjak; G Dyckes; M Dyndal; S Dysch; BS Dziedzic; MG Eggleston; T Eifert; G Eigen; K Einsweiler; T Ekelof; H El Jarrari; V Ellajosyula; M Ellert; F Ellinghaus; AA Elliot; N Ellis; J Elmsheuser; M Elsing; D Emeliyanov; A Emerman; Y Enari; MB Epland; J Erdmann; A Ereditato; PA Erland; M Errenst; M Escalier; C Escobar; O Estrada Pastor; E Etzion; G Evans; H Evans; MO Evans; A Ezhilov; F Fabbri; L Fabbri; V Fabiani; G Facini; RM Fakhrutdinov; S Falciano; PJ Falke; S Falke; J Faltova; Y Fang; Y Fang; G Fanourakis; M Fanti; M Faraj; A Farbin; A Farilla; EM Farina; T Farooque; SM Farrington; P Farthouat; F Fassi; P Fassnacht; D Fassouliotis; M Faucci Giannelli; WJ Fawcett; L Fayard; OL Fedin; W Fedorko; A Fehr; M Feickert; L Feligioni; A Fell; C Feng; M Feng; MJ Fenton; AB Fenyuk; SW Ferguson; J Ferrando; A Ferrante; A Ferrari; P Ferrari; R Ferrari; DE Ferreira de Lima; A Ferrer; D Ferrere; C Ferretti; F Fiedler; F Filthaut; KD Finelli; MCN Fiolhais; L Fiorini; F Fischer; J Fischer; WC Fisher; T Fitschen; I Fleck; P Fleischmann; T Flick; BM Flierl; L Flores; LR Flores Castillo; FM Follega; N Fomin; JH Foo; GT Forcolin; BC Forland; A Formica; FA Forster; AC Forti; E Fortin; MG Foti; D Fournier; H Fox; P Francavilla; S Francescato; M Franchini; S Franchino; D Francis; L Franco; L Franconi; M Franklin; G Frattari; AN Fray; PM Freeman; B Freund; WS Freund; EM Freundlich; DC Frizzell; D Froidevaux; JA Frost; M Fujimoto; C Fukunaga; E Fullana Torregrosa; T Fusayasu; J Fuster; A Gabrielli; A Gabrielli; S Gadatsch; P Gadow; G Gagliardi; LG Gagnon; GE Gallardo; EJ Gallas; BJ Gallop; R Gamboa Goni; KK Gan; S Ganguly; J Gao; Y Gao; YS Gao; FM Garay Walls; C Garcia; JE Garcia Navarro; JA Garcia Pascual; C Garcia-Argos; M Garcia-Sciveres; RW Gardner; N Garelli; S Gargiulo; CA Garner; V Garonne; SJ Gasiorowski; P Gaspar; A Gaudiello; G Gaudio; P Gauzzi; IL Gavrilenko; A Gavrilyuk; C Gay; G Gaycken; EN Gazis; AA Geanta; CM Gee; CNP Gee; J Geisen; M Geisen; C Gemme; MH Genest; C Geng; S Gentile; S George; T Geralis; LO Gerlach; P Gessinger-Befurt; G Gessner; S Ghasemi; M Ghasemi Bostanabad; M Ghneimat; A Ghosh; A Ghosh; B Giacobbe; S Giagu; N Giangiacomi; P Giannetti; A Giannini; G Giannini; SM Gibson; M Gignac; DT Gil; BJ Gilbert; D Gillberg; G Gilles; NEK Gillwald; DM Gingrich; MP Giordani; PF Giraud; G Giugliarelli; D Giugni; F Giuli; S Gkaitatzis; I Gkialas; EL Gkougkousis; P Gkountoumis; LK Gladilin; C Glasman; J Glatzer; PCF Glaysher; A Glazov; GR Gledhill; I Gnesi; M Goblirsch-Kolb; D Godin; S Goldfarb; T Golling; D Golubkov; A Gomes; R Goncalves Gama; R Goncalo; G Gonella; L Gonella; A Gongadze; F Gonnella; JL Gonski; S Gonzalez de la Hoz; S Gonzalez Fernandez; R Gonzalez Lopez; C Gonzalez Renteria; R Gonzalez Suarez; S Gonzalez-Sevilla; GR Gonzalvo Rodriguez; L Goossens; NA Gorasia; PA Gorbounov; HA Gordon; B Gorini; E Gorini; A Gorisek; AT Goshaw; M Gostkin; CA Gottardo; M Gouighri; AG Goussiou; N Govender; C Goy; I Grabowska-Bold; EC Graham; J Gramling; E Gramstad; S Grancagnolo; M Grandi; V Gratchev; PM Gravila; FG Gravili; C Gray; HM Gray; C Grefe; K Gregersen; IM Gregor; P Grenier; K Grevtsov; C Grieco; NA Grieser; AA Grillo; K Grimm; S Grinstein; J-F Grivaz; S Groh; E Gross; J Grosse-Knetter; ZJ Grout; C Grud; A Grummer; JC Grundy; L Guan; W Guan; C Gubbels; J Guenther; A Guerguichon; JGR Guerrero Rojas; F Guescini; D Guest; R Gugel; A Guida; T Guillemin; S Guindon; J Guo; W Guo; Y Guo; Z Guo; R Gupta; S Gurbuz; G Gustavino; M Guth; P Gutierrez; C Gutschow; C Guyot; C Gwenlan; CB Gwilliam; ES Haaland; A Haas; C Haber; HK Hadavand; A Hadef; M Haleem; J Haley; JJ Hall; G Halladjian; GD Hallewell; K Hamano; H Hamdaoui; M Hamer; GN Hamity; K Han; L Han; L Han; S Han; YF Han; K Hanagaki; M Hance; DM Handl; MD Hank; R Hankache; E Hansen; JB Hansen; JD Hansen; MC Hansen; PH Hansen; EC Hanson; K Hara; T Harenberg; S Harkusha; PF Harrison; NM Hartman; NM Hartmann; Y Hasegawa; A Hasib; S Hassani; S Haug; R Hauser; LB Havener; M Havranek; CM Hawkes; RJ Hawkings; S Hayashida; D Hayden; C Hayes; RL Hayes; CP Hays; JM Hays; HS Hayward; SJ Haywood; F He; Y He; MP Heath; V Hedberg; AL Heggelund; C Heidegger; KK Heidegger; WD Heidorn; J Heilman; S Heim; T Heim; B Heinemann; JG Heinlein; JJ Heinrich; L Heinrich; J Hejbal; L Helary; A Held; S Hellesund; CM Helling; S Hellman; C Helsens; RCW Henderson; Y Heng; L Henkelmann; AM Henriques Correia; H Herde; Y Hernandez Jimenez; H Herr; MG Herrmann; T Herrmann; G Herten; R Hertenberger; L Hervas; TC Herwig; GG Hesketh; NP Hessey; H Hibi; S Higashino; E Higon-Rodriguez; K Hildebrand; JC Hill; KK Hill; KH Hiller; SJ Hillier; M Hils; I Hinchliffe; F Hinterkeuser; M Hirose; S Hirose; D Hirschbuehl; B Hiti; O Hladik; J Hobbs; N Hod; MC Hodgkinson; A Hoecker; D Hohn; D Hohov; T Holm; TR Holmes; M Holzbock; LBAH Hommels; TM Hong; JC Honig; A Honle; BH Hooberman; WH Hopkins; Y Horii; P Horn; LA Horyn; S Hou; A Hoummada; J Howarth; J Hoya; M Hrabovsky; J Hrivnac; A Hrynevich; T Hryn'ova; PJ Hsu; S-C Hsu; Q Hu; S Hu; YF Hu; DP Huang; X Huang; Y Huang; Y Huang; Z Hubacek; F Hubaut; M Huebner; F Huegging; TB Huffman; M Huhtinen; R Hulsken; RFH Hunter; N Huseynov; J Huston; J Huth; R Hyneman; S Hyrych; G Iacobucci; G Iakovidis; I Ibragimov; L Iconomidou-Fayard; P Iengo; R Ignazzi; O Igonkina; R Iguchi; T Iizawa; Y Ikegami; M Ikeno; N Ilic; F Iltzsche; H Imam; G Introzzi; M Iodice; K Iordanidou; V Ippolito; MF Isacson; M Ishino; W Islam; C Issever; S Istin; JM Iturbe Ponce; R Iuppa; A Ivina; JM Izen; V Izzo; P Jacka; P Jackson; RM Jacobs; BP Jaeger; V Jain; G Jakel; KB Jakobi; K Jakobs; T Jakoubek; J Jamieson; KW Janas; R Jansky; M Janus; PA Janus; G Jarlskog; AE Jaspan; N Javadov; M Javurkova; F Jeanneau; L Jeanty; J Jejelava; P Jenni; N Jeong; S Jezequel; H Ji; J Jia; Z Jia; H Jiang; Y Jiang; Z Jiang; S Jiggins; FA Jimenez Morales; J Jimenez Pena; S Jin; A Jinaru; O Jinnouchi; H Jivan; P Johansson; KA Johns; CA Johnson; E Jones; RWL Jones; SD Jones; TJ Jones; J Jongmanns; J Jovicevic; X Ju; JJ Junggeburth; A Juste Rozas; A Kaczmarska; M Kado; H Kagan; M Kagan; A Kahn; C Kahra; T Kaji; E Kajomovitz; CW Kalderon; A Kaluza; A Kamenshchikov; M Kaneda; NJ Kang; S Kang; Y Kano; J Kanzaki; LS Kaplan; D Kar; K Karava; MJ Kareem; I Karkanias; SN Karpov; ZM Karpova; V Kartvelishvili; AN Karyukhin; E Kasimi; A Kastanas; C Kato; J Katzy; K Kawade; K Kawagoe; T Kawaguchi; T Kawamoto; G Kawamura; EF Kay; S Kazakos; VF Kazanin; JM Keaveney; R Keeler; JS Keller; E Kellermann; D Kelsey; JJ Kempster; J Kendrick; KE Kennedy; O Kepka; S Kersten; BP Kersevan; S Ketabchi Haghighat; M Khader; F Khalil-Zada; M Khandoga; A Khanov; AG Kharlamov; T Kharlamova; EE Khoda; A Khodinov; TJ Khoo; G Khoriauli; E Khramov; J Khubua; S Kido; M Kiehn; E Kim; YK Kim; N Kimura; A Kirchhoff; D Kirchmeier; J Kirk; AE Kiryunin; T Kishimoto; DP Kisliuk; V Kitali; C Kitsaki; O Kivernyk; T Klapdor-Kleingrothaus; M Klassen; C Klein; MH Klein; M Klein; U Klein; K Kleinknecht; P Klimek; A Klimentov; T Klingl; T Klioutchnikova; FF Klitzner; P Kluit; S Kluth; E Kneringer; EBFG Knoops; A Knue; D Kobayashi; M Kobel; M Kocian; T Kodama; P Kodys; DM Koeck; PT Koenig; T Koffas; NM Kohler; M Kolb; I Koletsou; T Komarek; T Kondo; K Koneke; AXY Kong; AC Konig; T Kono; V Konstantinides; N Konstantinidis; B Konya; R Kopeliansky; S Koperny; K Korcyl; K Kordas; G Koren; A Korn; I Korolkov; E Korolkova; N Korotkova; O Kortner; S Kortner; VV Kostyukhin; A Kotsokechagia; A Kotwal; A Koulouris; A Kourkoumeli-Charalampidi; C Kourkoumelis; E Kourlitis; V Kouskoura; R Kowalewski; W Kozanecki; AS Kozhin; VA Kramarenko; G Kramberger; D Krasnopevtsev; MW Krasny; A Krasznahorkay; D Krauss; JA Kremer; J Kretzschmar; P Krieger; F Krieter; A Krishnan; M Krivos; K Krizka; K Kroeninger; H Kroha; J Kroll; J Kroll; KS Krowpman; U Kruchonak; H Krueger; N Krumnack; MC Kruse; JA Krzysiak; A Kubota; O Kuchinskaia; S Kuday; D Kuechler; JT Kuechler; S Kuehn; T Kuhl; V Kukhtin; Y Kulchitsky; S Kuleshov; YP Kulinich; M Kuna; A Kupco; T Kupfer; O Kuprash; H Kurashige; LL Kurchaninov; YA Kurochkin; A Kurova; MG Kurth; ES Kuwertz; M Kuze; AK Kvam; J Kvita; T Kwan; F La Ruffa; C Lacasta; F Lacava; DPJ Lack; H Lacker; D Lacour; E Ladygin; R Lafaye; B Laforge; T Lagouri; S Lai; IK Lakomiec; JE Lambert; S Lammers; W Lampl; C Lampoudis; E Lancon; U Landgraf; MPJ Landon; VS Lang; JC Lange; RJ Langenberg; AJ Lankford; F Lanni; K Lantzsch; A Lanza; A Lapertosa; JF Laporte; T Lari; F Lasagni Manghi; M Lassnig; V Latonova; TS Lau; A Laudrain; A Laurier; M Lavorgna; SD Lawlor; M Lazzaroni; B Le; E Le Guirriec; A Lebedev; M LeBlanc; T LeCompte; F Ledroit-Guillon; ACA Lee; CA Lee; GR Lee; L Lee; SC Lee; S Lee; B Lefebvre; HP Lefebvre; M Lefebvre; C Leggett; K Lehmann; N Lehmann; G Lehmann Miotto; WA Leight; A Leisos; MAL Leite; CE Leitgeb; R Leitner; D Lellouch; KJC Leney; T Lenz; S Leone; C Leonidopoulos; A Leopold; C Leroy; R Les; CG Lester; M Levchenko; J Leveque; D Levin; LJ Levinson; DJ Lewis; B Li; B Li; C-Q Li; F Li; H Li; H Li; J Li; K Li; L Li; M Li; Q Li; QY Li; S Li; X Li; Y Li; Z Li; Z Li; Z Li; Z Liang; M Liberatore; B Liberti; K Lie; S Lim; CY Lin; K Lin; RA Linck; RE Lindley; JH Lindon; A Linss; AL Lionti; E Lipeles; A Lipniacka; TM Liss; A Lister; JD Little; B Liu; BX Liu; HB Liu; JB Liu; JKK Liu; K Liu; M Liu; MY Liu; P Liu; X Liu; Y Liu; Y Liu; YL Liu; YW Liu; M Livan; A Lleres; J Llorente Merino; SL Lloyd; CY Lo; EM Lobodzinska; P Loch; S Loffredo; T Lohse; K Lohwasser; M Lokajicek; JD Long; RE Long; I Longarini; L Longo; KA Looper; I Lopez Paz; A Lopez Solis; J Lorenz; N Lorenzo Martinez; AM Lory; PJ Losel; A Losle; X Lou; X Lou; A Lounis; J Love; PA Love; JJ Lozano Bahilo; M Lu; YJ Lu; HJ Lubatti; C Luci; FL Lucio Alves; A Lucotte; F Luehring; I Luise; L Luminari; B Lund-Jensen; MS Lutz; D Lynn; H Lyons; R Lysak; E Lytken; F Lyu; V Lyubushkin; T Lyubushkina; H Ma; LL Ma; Y Ma; DM Mac Donell; G Maccarrone; A Macchiolo; CM Macdonald; JC MacDonald; J Machado Miguens; D Madaffari; R Madar; WF Mader; M Madugoda Ralalage Don; N Madysa; J Maeda; T Maeno; M Maerker; V Magerl; N Magini; J Magro; DJ Mahon; C Maidantchik; T Maier; A Maio; K Maj; O Majersky; S Majewski; Y Makida; N Makovec; B Malaescu; Pa Malecki; VP Maleev; F Malek; D Malito; U Mallik; C Malone; S Maltezos; S Malyukov; J Mamuzic; G Mancini; L Manhaes de Andrade Filho; IM Maniatis; J Manjarres Ramos; KH Mankinen; A Mann; A Manousos; B Mansoulie; I Manthos; S Manzoni; A Marantis; G Marceca; L Marchese; G Marchiori; M Marcisovsky; L Marcoccia; C Marcon; M Marjanovic; Z Marshall; MUF Martensson; S Marti-Garcia; CB Martin; TA Martin; VJ Martin; B Martin Dit Latour; L Martinelli; M Martinez; P Martinez Agullo; VI Martinez Outschoorn; S Martin-Haugh; VS Martoiu; AC Martyniuk; A Marzin; SR Maschek; L Masetti; T Mashimo; 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Journal article

Test of the universality of tau and mu lepton couplings in W-boson decays with the ATLAS detector

G Aad, B Abbott, DC Abbott, A Abed Abud, K Abeling, DK Abhayasinghe, SH Abidi, OS AbouZeid, NL Abraham, H Abramowicz, H Abreu, Y Abulaiti, BS Acharya, B Achkar, L Adam, C Adam Bourdarios, L Adamczyk, L Adamek, J Adelman, M Adersberger Show all

NATURE PHYSICS | NATURE RESEARCH | Published : 2021

DOI: 10.1038/s41567-021-01236-w

Abstract

The standard model of particle physics encapsulates our best current understanding of physics at the smallest scales. A fundamental axiom of this theory is the universality of the couplings of the different generations of leptons to the electroweak gauge bosons. The measurement of the ratio of the decay rate of W bosons to τ leptons and muons, R(τ/μ), constitutes an important test of this axiom. Using 139 fb−1 of proton–proton collisions recorded with the ATLAS detector at a centre-of-mass energy of 13 TeV, we report a measurement of this quantity from di-leptonic tt¯ events where the top quarks decay into a W boson and a bottom quark. We can distinguish muons originating from W bosons and t..

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University of Melbourne Researchers

Elisabetta Barberio Author Physics

Jafar (Seyed Ruhollah) Shojaii Author Physics

Geoffrey Taylor Author Physics

Phillip Urquijo Author Physics

Grants

Funding Acknowledgements

We thank CERN for the very successful operation of the LHC, as well as the support staff from our institutions, without whom ATLAS could not be operated efficiently. We acknowledge the support of ANPCyT, Argentina; YerPhI, Armenia; ARC, Australia; BMWFW and FWF, Austria; ANAS, Azerbaijan; SSTC, Belarus; CNPq and FAPESP, Brazil; NSERC, NRC and CFI, Canada; CERN; ANID, Chile; CAS, MOST and NSFC, China; COLCIENCIAS, Colombia; MSMT CR, MPO CR and VSC CR, Czech Republic; DNRF and DNSRC, Denmark; IN2P3-CNRS and CEA-DRF/IRFU, France; SRNSFG, Georgia; BMBF, HGF and MPG, Germany; GSRT, Greece; RGC and Hong Kong SAR, China; ISF and Benoziyo Center, Israel; INFN, Italy; MEXT and JSPS, Japan; CNRST, Morocco; NWO, Netherlands; RCN, Norway; MNiSW and NCN, Poland; FCT, Portugal; MNE/IFA, Romania; MES of Russia and NRC KI, Russia Federation; JINR; MESTD, Serbia; MSSR, Slovakia; ARRS and MIZS, Slovenia; DST/NRF, South Africa; MICINN, Spain; SRC and Wallenberg Foundation, Sweden; SERI, SNSF and cantons of Bern and Geneva, Switzerland; MOST, Taiwan; TAEK, Turkey; STFC, United Kingdom; DOE and NSF, United States. In addition, individual groups and members have received support from BCKDF, CANARIE, Compute Canada and CRC, Canada; ERC, ERDF, Horizon 2020, Marie Sklodowska-Curie Actions and COST, European Union; Investissements d'Avenir Labex, Investissements d'Avenir Idex and ANR, France; DFG and AvH Foundation, Germany; Herakleitos, Thales and Aristeia programmes co-financed by EU-ESF and the Greek NSRF, Greece; BSF-NSF and GIF, Israel; La Caixa Banking Foundation, CERCA Programme Generalitat de Catalunya and PROMETEO and GenT Programmes Generalitat Valenciana, Spain; Goran Gustafssons Stiftelse, Sweden; The Royal Society and Leverhulme Trust, United Kingdom. The crucial computing support from all WLCG partners is acknowledged gratefully, in particular from CERN, the ATLAS Tier-1 facilities at TRIUMF (Canada), NDGF (Denmark, Norway, Sweden), CC-IN2P3 (France), KIT/GridKA (Germany), INFN-CNAF (Italy), NL-T1 (Netherlands), PIC (Spain), ASGC (Taiwan), RAL (United Kingdom) and BNL (United States), the Tier-2 facilities worldwide and large non-WLCG resource providers. Major contributors of computing resources are listed at https://cds.cern.ch/record/2717821.