Search for Higgs boson decays into two new low-mass spin-0 particles in the 4b channel with the ATLAS detector using pp collisions at root s=13 TeV

G Aad; B Abbott; DC Abbott; A Abud; K Abeling; DK Abhayasinghe; SH Abidi; OS AbouZeid; NL Abraham; H Abramowicz; H Abreu; Y Abulaiti; BS Acharya; B Achkar; S Adachi; L Adam; Adam C 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; F Ahmadov; WS Ahmed; X Ai; G Aielli; S Akatsuka; TPA Akesson; E Akilli; AV Akimov; K Al Khoury; GL Alberghi; J Albert; MJ Alconada Verzini; S Alderweireldt; M Aleksa; IN Aleksandrov; C Alexa; D Alexandre; T Alexopoulos; A Alfonsi; F Alfonsi; M Alhroob; B Ali; G Alimonti; J Alison; SP Alkire; C Allaire; BMM Allbrooke; BW Allen; PP Allport; A Aloisio; A Alonso; F Alonso; C Alpigiani; AA Alshehri; M Alvarez Estevez; D Alvarez Piqueras; 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; CF Anders; JK Anders; A Andreazza; V Andrei; CR Anelli; S Angelidakis; A Angerami; AV Anisenkov; A Annovi; C Antel; MT Anthony; M Antonelli; DJA Antrim; F Anulli; M Aoki; JA Aparisi Pozo; L Aperio Bella; G Arabidze; JP Araque; 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; A Artamonov; G Artoni; S Artz; S Asai; N Asbah; EM Asimakopoulou; L Asquith; J Assahsah; K Assamagan; R Astalos; RJ Atkin; M Atkinson; NB Atlay; H Atmani; K Augsten; G Avolio; R Avramidou; MK Ayoub; AM Azoulay; G Azuelos; H Bachacou; K Bachas; M Backes; F Backman; P Bagnaia; M Bahmani; H Bahrasemani; AJ Bailey; VR Bailey; JT Baines; M Bajic; C Bakalis; OK Baker; PJ Bakker; D Bakshi Gupta; S Balaji; EM Baldin; P Balek; F Balli; WK Balunas; J Balz; E Banas; A Bandyopadhyay; Sw Banerjee; AAE Bannoura; L Barak; WM Barbe; EL Barberio; D Barberis; M Barbero; G Barbour; T Barillari; M-S Barisits; J Barkeloo; T Barklow; R Barnea; SL Barnes; BM Barnett; RM Barnett; Z Barnovska-Blenessy; A Baroncelli; G Barone; AJ Barr; Barranco L Navarro; F Barreiro; J Barreiro Guimaraes da Costa; S Barsov; R Bartoldus; G Bartolini; AE Barton; P Bartos; A Basalaev; A Bassalat; MJ Basso; RL Bates; S Batlamous; JR Batley; B Batool; M Battaglia; M Bauce; F Bauer; KT Bauer; HS Bawa; JB Beacham; T Beau; PH Beauchemin; F Becherer; P Bechtle; HC Beck; HP Beck; K Becker; M 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; 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 Kuutmann; N Berger; B Bergmann; LJ Bergsten; J Beringer; S Berlendis; NR Bernard; G Bernardi; C Bernius; FU Bernlochner; T Berry; P Berta; C Bertella; IA Bertram; O Bylund; N Besson; A Bethani; S Bethke; A Betti; AJ Bevan; J Beyer; DS Bhattacharya; P Bhattarai; R Bi; RM Bianchi; O Biebel; D Biedermann; R Bielski; K Bierwagen; NV Biesuz; M Biglietti; TRV Billoud; M Bindi; A Bingul; C Bini; S Biondi; M Birman; T Bisanz; JP Biswal; D Biswas; A Bitadze; C Bittrich; K Bjorke; KM Black; T Blazek; I Bloch; C Blocker; A Blue; U Blumenschein; GJ Bobbink; VS Bobrovnikov; SS Bocchetta; A Bocci; D Boerner; D Bogavac; AG Bogdanchikov; C Bohm; V Boisvert; P Bokan; T Bold; AS Boldyrev; AE Bolz; M Bomben; M Bona; JS Bonilla; M Boonekamp; CD Booth; HM Borecka-Bielska; A Borisov; G Borissov; J Bortfeldt; D Bortoletto; D Boscherini; M Bosman; JD Sola; K Bouaouda; J Boudreau; EV Bouhova-Thacker; D Boumediene; SK Boutle; 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 Madden; K Brendlinger; L Brenner; R Brenner; S Bressler; B Brickwedde; DL Briglin; D Britton; D Britzger; I Brock; R Brock; G Brooijmans; WK Brooks; E Brost; JH Broughton; PA de Renstrom; D Bruncko; A Bruni; G Bruni; LS Bruni; S Bruno; BH Brunt; M Bruschi; N Bruscino; P Bryant; L Bryngemark; T Buanes; Q Buat; P Buchholz; AG Buckley; IA Budagov; MK Bugge; F Buehrer; O Bulekov; 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 Vazquez; A Buzatu; AR Buzykaev; G Cabras; S Urban; D Caforio; H Cai; VMM Cairo; O Cakir; N Calace; P Calafiura; A Calandri; G Calderini; P Calfayan; G Callea; LP Caloba; S Lopez; D Calvet; S Calvet; TP Calvet; M Calvetti; R Toro; S Camarda; D Munoz; P Camarri; D Cameron; R Armadans; C Camincher; S Campana; M Campanelli; A Camplani; A Campoverde; V Canale; A Canesse; M Bret; J Cantero; T Cao; Y Cao; MDM Garrido; M Capua; R Cardarelli; F Cardillo; G Carducci; I Carli; T Carli; G Carlino; BT Carlson; L Carminati; RMD Carney; S Caron; E Carquin; S Carra; JWS Carter; MP Casado; AF Casha; DW Casper; R Castelijn; FL Castillo; V Gimenez; NF Castro; A Catinaccio; JR Catmore; A Cattai; J Caudron; V Cavaliere; E Cavallaro; M Cavalli-Sforza; V Cavasinni; E Celebi; F Ceradini; L Alberich; K Cerny; AS Cerqueira; A Cerri; L Cerrito; F Cerutti; A Cervelli; SA Cetin; Z Chadi; D Chakraborty; SK Chan; WS Chan; WY Chan; JD Chapman; B Chargeishvili; DG Charlton; TP Charman; CC Chau; S Che; S Chekanov; SV Chekulaev; GA Chelkov; MA Chelstowska; B Chen; C Chen; CH Chen; H 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 El Moursli; E Cheu; K Cheung; TJA Chevalerias; L Chevalier; V Chiarella; G Chiarelli; G Chiodini; AS Chisholm; A Chitan; I Chiu; YH Chiu; MV Chizhov; K Choi; AR Chomont; S Chouridou; YS Chow; MC Chu; X Chu; J Chudoba; AJ Chuinard; JJ Chwastowski; L Chytka; D Cieri; KM Ciesla; D Cinca; V Cindro; IA Cioara; A Ciocio; F Cirotto; ZH Citron; M Citterio; DA Ciubotaru; BM Ciungu; A Clark; MR Clark; PJ Clark; C Clement; Y Coadou; M Cobal; A Coccaro; J Cochran; H Cohen; AEC Coimbra; L Colasurdo; B Cole; AP Colijn; J Collot; P Muino; E Coniavitis; SH Connell; IA Connelly; S Constantinescu; F Conventi; AM Cooper-Sarkar; F Cormier; KJR Cormier; LD Corpe; M Corradi; EE Corrigan; F Corriveau; A Cortes-Gonzalez; MJ Costa; F Costanza; D Costanzo; G Cowan; JW Cowley; J Crane; K Cranmer; SJ Crawley; RA Creager; S Crepe-Renaudin; F Crescioli; M Cristinziani; V Croft; G Crosetti; A Cueto; T Donszelmann; AR Cukierman; WR Cunningham; S Czekierda; P Czodrowski; MJ De Sousa; JV Pinto; C Da Via; W Dabrowski; T Dado; S Dahbi; T Dai; C Dallapiccola; M Dam; G D'amen; V D'Amico; J Damp; JR Dandoy; MF Daneri; NP Dang; NS Dann; M Danninger; V Dao; G Darbo; O Dartsi; A Dattagupta; T Daubney; S D'Auria; W Davey; C David; T Davidek; DR Davis; I Dawson; K De; R De Asmundis; M De Beurs; S De Castro; S De Cecco; 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; K De Vasconcelos Corga; JB De Vivie De Regie; C Debenedetti; DV Dedovich; AM Deiana; M Del Gaudio; J Del Peso; Y 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; D Denysiuk; L D'Eramo; D Derendarz; JE Derkaoui; F Derue; P Dervan; K Desch; C Deterre; K Dette; C Deutsch; MR Devesa; PO Deviveiros; A Dewhurst; 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; D Di Valentino; C Diaconu; FA Dias; T Do Vale; MA Diaz; J Dickinson; EB Diehl; J Dietrich; S Cornell; A Dimitrievska; W Ding; J Dingfelder; F Dittus; F Djama; T Djobava; JI 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; Y Duan; F Dubinin; M Dubovsky; A Dubreuil; E Duchovni; G Duckeck; A Ducourthial; OA Ducu; D Duda; A Dudarev; AC Dudder; EM Duffield; L Duflot; M Duehrssen; C Dulsen; M Dumancic; AE Dumitriu; AK Duncan; M Dunford; A Duperrin; H Yildiz; M Dueren; A Durglishvili; D Duschinger; B Dutta; D Duvnjak; GI Dyckes; M Dyndal; S Dysch; BS Dziedzic; KM Ecker; RC Edgar; MG Eggleston; T Eifert; G Eigen; K Einsweiler; T Ekelof; H El Jarrari; M El Kacimi; R El Kosseifi; 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; M Errenst; M Escalier; C Escobar; O Estrada Pastor; E Etzion; H Evans; A Ezhilov; F Fabbri; L Fabbri; V Fabiani; G Facini; RM Faisca Rodrigues Pereira; 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; S Farrell; SM Farrington; P Farthouat; F Fassi; P Fassnacht; D Fassouliotis; M Faucci Giannelli; WJ Fawcett; L Fayard; OL Fedin; W Fedorko; M Feickert; L Feligioni; A Fell; C Feng; EJ Feng; M Feng; MJ Fenton; AB Fenyuk; J Ferrando; A Ferrante; A Ferrari; P Ferrari; R Ferrari; DE Ferreira De Lima; A Ferrer; D Ferrere; C Ferretti; F Fiedler; A Filipcic; F Filthaut; KD Finelli; MCN Fiolhais; L Fiorini; F Fischer; WC Fisher; I Fleck; P Fleischmann; RRM Fletcher; T Flick; BM Flierl; L Flores; LR Castillo; FM Follega; N Fomin; JH Foo; GT Forcolin; A Formica; FA Forster; AC Forti; AG Foster; MG Foti; D Fournier; H Fox; P Francavilla; S Francescato; M Franchini; S Franchino; D Francis; L Franconi; M Franklin; AN Fray; PM Freeman; B Freund; WS Freund; EM Freundlich; DC Frizzell; D Froidevaux; JA Frost; C Fukunaga; E Torregrosa; E Fumagalli; T Fusayasu; J Fuster; A Gabrielli; A Gabrielli; GP Gach; S Gadatsch; P Gadow; G Gagliardi; LG Gagnon; C Galea; B Galhardo; GE Gallardo; EJ Gallas; BJ Gallop; G Galster; R Goni; KK Gan; S Ganguly; J Gao; Y Gao; YS Gao; C Garcia; JE Garcia Navarro; JA Garcia Pascual; C Garcia-Argos; M Garcia-Sciveres; RW Gardner; N Garelli; S Gargiulo; V Garonne; A Gaudiello; G Gaudio; IL Gavrilenko; A Gavrilyuk; C Gay; G Gaycken; EN Gazis; AA Geanta; CM Gee; CNP Gee; J Geisen; M Geisen; MP Geisler; C Gemme; MH Genest; C Geng; S Gentile; S George; T Geralis; LO Gerlach; P Gessinger-Befurt; G Gessner; S Ghasemi; M Ghasemi Bostanabad; A Ghosh; A Ghosh; B Giacobbe; S Giagu; N Giangiacomi; P Giannetti; A Giannini; G Giannini; SM Gibson; M Gignac; D Gillberg; G Gilles; DM Gingrich; MP Giordani; FM Giorgi; 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; M Goblirsch-Kolb; D Godin; S Goldfarb; T Golling; D Golubkov; A Gomes; R Gama; R Goncalo; G Gonella; L Gonella; A Gongadze; F Gonnella; JL Gonski; S Gonzalez de la Hoz; S Gonzalez-Sevilla; GR Gonzalvo Rodriguez; L Goossens; PA Gorbounov; HA Gordon; B Gorini; E Gorini; A Gorisek; AT Goshaw; MI Gostkin; CA Gottardo; M Gouighri; D Goujdami; AG Goussiou; N Govender; C Goy; E Gozani; 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; J Griffiths; AA Grillo; K Grimm; S Grinstein; J-F Grivaz; S Groh; E Gross; J Grosse-Knetter; ZJ Grout; C Grud; A Grummer; L Guan; W Guan; J Guenther; A Guerguichon; JGR Rojas; F Guescini; D Guest; R Gugel; T Guillemin; S Guindon; U Gul; 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; A Haas; C Haber; HK Hadavand; N Haddad; A Hadef; S Hageboeck; M Haleem; J Haley; G Halladjian; GD Hallewell; K Hamacher; P Hamal; K Hamano; H Hamdaoui; GN Hamity; K Han; L Han; S Han; YF Han; K Hanagaki; M Hance; DM Handl; B Haney; R Hankache; E Hansen; JB Hansen; JD Hansen; MC Hansen; PH Hansen; EC Hanson; K Hara; T Harenberg; S Harkusha; PF Harrison; NM Hartmann; Y Hasegawa; A Hasib; S Hassani; S Haug; R Hauser; LB Havener; M Havranek; CM Hawkes; RJ Hawkings; D Hayden; C Hayes; RL Hayes; CP Hays; JM Hays; HS Hayward; SJ Haywood; F He; MP Heath; V Hedberg; L Heelan; S Heer; KK Heidegger; WD Heidorn; J Heilman; S Heim; T Heim; B Heinemann; JJ Heinrich; L Heinrich; C Heinz; J Hejbal; L Helary; A Held; S Hellesund; CM Helling; S Hellman; C Helsens; RCW Henderson; Y Heng; S Henkelmann; AM Henriques Correia; GH Herbert; H Herde; V Herget; Y Hernandez Jimenez; H Herr; MG Herrmann; T Herrmann; G Herten; R Hertenberger; L Hervas; TC Herwig; GG Hesketh; NP Hessey; A Higashida; S Higashino; E Higon-Rodriguez; K Hildebrand; E Hill; JC Hill; KK Hill; KH Hiller; SJ Hillier; M Hils; I Hinchliffe; F Hinterkeuser; M Hirose; S Hirose; D Hirschbuehl; B Hiti; O Hladik; DR Hlaluku; X Hoad; J Hobbs; N Hod; MC Hodgkinson; A Hoecker; F Hoenig; D Hohn; D Hohov; TR Holmes; M Holzbock; LBAH Hommels; S Honda; TM Hong; JC Honig; A Hoenle; BH Hooberman; WH Hopkins; Y Horii; P Horn; LA Horyn; S Hou; A Hoummada; J Howarth; J Hoya; M Hrabovsky; J Hrdinka; I Hristova; J Hrivnac; A Hrynevich; T Hryn'ova; PJ Hsu; S-C Hsu; Q Hu; S Hu; YF Hu; DP Huang; Y Huang; Y Huang; Z Hubacek; F Hubaut; M Huebner; F Huegging; TB Huffman; M Huhtinen; RFH Hunter; P Huo; AM Hupe; N Huseynov; J Huston; J Huth; R Hyneman; S Hyrych; G Iacobucci; G Iakovidis; I Ibragimov; L Iconomidou-Fayard; Z Idrissi; P Iengo; R Ignazzi; O Igonkina; R Iguchi; T Iizawa; Y Ikegami; M Ikeno; D Iliadis; N Ilic; F Iltzsche; G Introzzi; M Iodice; K Iordanidou; V Ippolito; MF Isacson; M Ishino; W Islam; C Issever; S Istin; F Ito; JM Iturbe Ponce; R Iuppa; A Ivina; H Iwasaki; JM Izen; V Izzo; P Jacka; P Jackson; RM Jacobs; BP Jaeger; V Jain; G Jaekel; KB Jakobi; K Jakobs; S Jakobsen; T Jakoubek; J Jamieson; KW Janas; R Jansky; J Janssen; M Janus; PA Janus; G Jarlskog; N Javadov; T Javurek; M Javurkova; F Jeanneau; L Jeanty; J Jejelava; A Jelinskas; P Jenni; J Jeong; N Jeong; S Jezequel; H Ji; J Jia; H Jiang; Y Jiang; Z Jiang; S Jiggins; FA Jimenez Morales; J Pena; S Jin; A Jinaru; O Jinnouchi; H Jivan; P Johansson; KA Johns; CA Johnson; K Jon-And; RWL Jones; SD Jones; S Jones; TJ Jones; J Jongmanns; PM Jorge; J Jovicevic; X Ju; JJ Junggeburth; A Juste Rozas; A Kaczmarska; M Kado; H Kagan; M Kagan; C Kahra; T Kaji; E Kajomovitz; CW Kalderon; A Kaluza; A Kamenshchikov; M Kaneda; L Kanjir; Y Kano; VA Kantserov; J Kanzaki; LS Kaplan; D Kar; K Karava; MJ Kareem; SN Karpov; ZM Karpova; V Kartvelishvili; AN Karyukhin; L Kashif; RD Kass; A Kastanas; C Kato; J Katzy; K Kawade; K Kawagoe; T Kawaguchi; T Kawamoto; G Kawamura; EF Kay; VF Kazanin; R Keeler; R Kehoe; JS Keller; E Kellermann; D Kelsey; JJ Kempster; J Kendrick; O Kepka; S Kersten; BP Kersevan; S Haghighat; M Khader; F Khalil-Zada; M Khandoga; A Khanov; AG Kharlamov; T Kharlamova; EE Khoda; A Khodinov; TJ Khoo; E Khramov; J Khubua; S Kido; M Kiehn; CR Kilby; YK Kim; N Kimura; OM Kind; BT King; D Kirchmeier; J Kirk; AE Kiryunin; T Kishimoto; DP Kisliuk; V Kitali; O Kivernyk; T Klapdor-Kleingrothaus; M Klassen; 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; T Kobayashi; M Kobel; M Kocian; P Kodys; PT Koenig; T Koffas; NM Koehler; T Koi; M Kolb; I Koletsou; T Komarek; T Kondo; N Kondrashova; K Koeneke; AC Konig; T Kono; R Konoplich; V Konstantinides; N Konstantinidis; B Konya; R Kopeliansky; S Koperny; K Korcyl; K Kordas; G Koren; A Korn; I Korolkov; EV Korolkova; N Korotkova; O Kortner; S Kortner; T Kosek; VV Kostyukhin; A Kotsokechagia; A Kotwal; A Koulouris; A Kourkoumeli-Charalampidi; C Kourkoumelis; E Kourlitis; V Kouskoura; AB Kowalewska; R Kowalewski; C Kozakai; 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; K Krizka; K Kroeninger; H Kroha; J Kroll; J Kroll; KS Krowpman; J Krstic; U Kruchonak; H Krueger; N Krumnack; MC Kruse; JA Krzysiak; T Kubota; O Kuchinskaia; S Kuday; JT Kuechler; S Kuehn; A Kugel; T Kuhl; V Kukhtin; R Kukla; Y Kulchitsky; S Kuleshov; YP Kulinich; M Kuna; T Kunigo; 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; A La Rosa; L La Rotonda; F La Ruffa; C Lacasta; F Lacava; DPJ Lack; H Lacker; D Lacour; E Ladygin; R Lafaye; B Laforge; T Lagouri; S Lai; S Lammers; W Lampl; C Lampoudis; E Lancon; U Landgraf; MPJ Landon; MC Lanfermann; VS Lang; JC Lange; RJ Langenberg; AJ Lankford; F Lanni; K Lantzsch; A Lanza; A Lapertosa; S Laplace; JF Laporte; T Lari; F Manghi; M Lassnig; TS Lau; A Laudrain; A Laurier; M Lavorgna; SD Lawlor; M Lazzaroni; B Le; E Le Guirriec; M LeBlanc; T LeCompte; F Ledroit-Guillon; ACA Lee; CA Lee; GR Lee; L Lee; SC Lee; SJ Lee; S Lee; B Lefebvre; HP Lefebvre; M Lefebvre; F Legger; 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; B Lenzi; R Leone; S Leone; C Leonidopoulos; A Leopold; G Lerner; 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 Liang; B Liberti; A Liblong; K Lie; CY Lin; K Lin; TH Lin; RA Linck; JH Lindon; AL Lionti; E Lipeles; A Lipniacka; M Lisovyi; TM Liss; A Lister; AM Litke; JD Little; B Liu; BL Liu; HB Liu; H Liu; JB Liu; JKK Liu; K Liu; M Liu; P Liu; Y Liu; YL Liu; YW Liu; M Livan; A Lleres; J Llorente Merino; SL Lloyd; CY Lo; F Lo Sterzo; EM Lobodzinska; P Loch; S Loffredo; T Lohse; K Lohwasser; M Lokajicek; JD Long; RE Long; L Longo; KA Looper; JA Lopez; I Paz; A Solis; J Lorenz; N Lorenzo Martinez; M Losada; PJ Loesel; A Loesle; X Lou; X Lou; A Lounis; J Love; PA Love; JJ Bahilo; M Lu; YJ Lu; HJ Lubatti; C Luci; A Lucotte; C Luedtke; F Luehring; I Luise; L Luminari; B Lund-Jensen; MS Lutz; D Lynn; R Lysak; E Lytken; F Lyu; V Lyubushkin; T Lyubushkina; H Ma; LL Ma; Y Ma; G Maccarrone; A Macchiolo; CM Macdonald; J Miguens; D Madaffari; R Madar; WF Mader; N Madysa; J Maeda; S Maeland; T Maeno; M Maerker; AS Maevskiy; V Magerl; N Magini; 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; U Mallik; D Malon; C Malone; S Maltezos; S Malyukov; J Mamuzic; G Mancini; I Mandic; L Manhaes de Andrade Filho; IM Maniatis; J 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; CA Marin Tobon; M Marjanovic; Z Marshall; MUF Martensson; S Marti-Garcia; CB Martin; TA Martin; VJ Martin; B Martin Dit Latour; L Martinelli; M Martinez; VI Martinez Outschoorn; S Martin-Haugh; VS Martoiu; AC Martyniuk; A Marzin; SR Maschek; L Masetti; T Mashimo; R Mashinistov; J Masik; AL Maslennikov; L Massa; P Massarotti; P Mastrandrea; A Mastroberardino; T Masubuchi; 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Journal article

Search for Higgs boson decays into two new low-mass spin-0 particles in the 4b channel with the ATLAS detector using pp collisions at root s=13 TeV

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

Physical Review D | AMER PHYSICAL SOC | Published : 2020

DOI: 10.1103/PhysRevD.102.112006

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Abstract

This paper describes a search for beyond the Standard Model decays of the Higgs boson into a pair of new spin-0 particles subsequently decaying into b-quark pairs, H → aa → (bb¯)(bb¯), using protonproton collision data collected by the ATLAS detector at the Large Hadron Collider at center-of-mass energy √s = 13 TeV. This search focuses on the range 15 GeV ≤ ma ≤ 30 GeV, where the decay products are collimated; it is complementary to a previous search in the same final state targeting the range 20 GeV ≤ ma ≤ 60 GeV, where the decay products are well separated. A novel strategy for the identification of the a → bb¯ decays is deployed to enhance the efficiency for topologies with small separati..

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University of Melbourne Researchers

Federico Scutti Author Physics

Elisabetta Barberio 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 of America. 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 (UK) and BNL (USA), the Tier-2 facilities worldwide and large non-WLCG resource providers. Major contributors of computing resources are listed in Ref. [72].