Search for the Higgs boson produced in association with a W boson and decaying to four b-quarks via two spin-zero particles in pp collisions at 13 TeV with the ATLAS detector

M Aaboud,W K Di Clemente,Z Hajduk,A Soloshenko,A Firan,L F Oleiro Seabra,D Paredes Hernandez,G T Fletcher,P Farthouat,Y Hernández Jiménez,O E Vickey Boeriu,J A Murillo Quijada,E Torrence,S González De La Hoz,M Cooke,G Eigen,T Lari,D Álvarez Piqueras,S Donati,J L La Rosa Navarro,A Loginov,T Todorov,S J Sekula,J A Aguilar-Saavedra,K Kasahara,D Di Valentino,Q Ouyang,B Jackson,G Carlino,M Leyton,P S Wells,P M Watkins,J C Vermeulen,S Tapia Araya,B K B Chow,J D Bossio Sola,P J Clark,A De Maria,M Medinnis,M J Woudstra,J Zhong,K K Temming,S Malyukov,F J Munoz Sanchez,R Ishmukhametov,J Huston,Y Kulchitsky,E L Barberio,T Del Prete,M A L Leite,R Santonico,S Albrand,S H Robertson,A Pacheco Pages,T Ince,R Di Nardo,M Shimojima,G Savage,B Di Girolamo,M J Alconada Verzini,A A Affolder,P Sinervo,L La Rotonda,M Della Pietra,F Lasagni Manghi,D Oliveira Damazio,E Piccaro,A T Doyle,C Lapoire,F Parodi,J E Sundermann,D P C Sankey,T Ženiš,G Duckeck,R E Blair,L Barranco Navarro,M Losada,P Johansson,Ph Schune,Y Sakurai,T Kobayashi,G H A Viehhauser,T M Hong,F G Oakham,A J Barr,J Griffiths,K Ntekas,I Van Vulpen,P A Delsart,E Le Guirriec,J Ocariz,A De Benedetti,S George,M Wittgen,F Khalil-Zada,R E Long,M El Kacimi,G Ciapetti,W D Breaden Madden,G Rahal,V Consorti,L Aperio Bella,H De La Torre,S Yu Sivoklokov,W Van Den Wollenberg,H H Williams,Ph Schwemling,F Luehring,H Van Der Graaf,S A Olivares Pino,J Albert,D M Gingrich,J Del Peso,O Le Dortz,T P A Åkesson,I M Gregor,L Zanello,M J Oreglia,N C Mc Fadden,N B Sinev,S De Castro,K J C Leney,A Juste Rozas,A Artamonov,S Gadomski,V Chernyatin,M Franklin,R C W Henderson,C Haber,S Tanaka,Y Jiang,N G Gutierrez Ortiz,D Jennens,Y Amaral Coutinho,H A Neal,J Boudreau,A Maio,D Della Volpe,A Canepa,B Lopez Paredes,H P Skottowe,P Morettini,L Han,N L Abraham,D E Ferreira De Lima,F Safai Tehrani,M J Da Cunha Sargedas De Sousa,J A Parsons,M Reale,Y Guo,J A Bogaerts,H Ghazlane,M J Tibbetts,A Kapliy,R Camacho Toro,H Kagan,C T Potter,A Farilla,F Friedrich,E Magradze,J Beringer,A A Minaenko,L Manhaes De Andrade Filho,H Duran Yildiz,G Marchiori,M Marx,G Cortiana,K G Tan,E Thomson,Y A Kurochkin,A Boveia,S Yu Smirnov,U De Sanctis,P Lichard,P Grafström,S V Mouraviev,Y Huang,F M Garay Walls,L E Price,A Di Ciaccio,M P Giordani,A M Henriques Correia,J Montejo Berlingen,W S Lockman,V Kartvelishvili,L M Mir,G Calderini,A Seiden,A Salamon,A Ferretto Parodi,C A Solans Sanchez,A Bruni,G Susinno,J Van Nieuwkoop,R Di Sipio,F S Merritt,D Chakraborty,M Crispin Ortuzar,V Sanchez Martinez,B G Pope,H Meyer Zu Theenhausen,T Mueller,R De Asmundis,J P Thomas,V Scharf,A R Weidberg,A Polini,U Mallik,A Pranko,S Yamamoto,L Masetti,A Nikiforov,J E García Navarro,M Mikuž,S Errede,A Kobayashi,D Shoaleh Saadi,A T Goshaw,A La Rosa,T Cuhadar Donszelmann,B R Mellado Garcia,H M Braun,E Perez Codina,A A E Bannoura,J Schwindling,T Schwindt,J Tanaka,J A Valls Ferrer,J Maneira,H Von Der Schmitt,S Heim,K Amako,G Compostella,M Trottier-Mcdonald,C Zeitnitz,T Kono,M Volpi,L Köpke,S Pagan Griso,K P Mistry,A Hasib,B Esposito,S Youssef,R J Teuscher,A Borisov,R Sandstroem,S P Mc Kee,V R Lacuesta,A Glazov,R Madar,G Anders,K Nakamura,C N P Gee,M Zur Nedden,L K Gladilin,N De Groot,D Guest,R Caminal Armadans,J H N Rosten,B Stugu,H Pirumov,J E Brau,B Martin Dit Latour,A Lanza,E Benhar Noccioli,D Fassouliotis,P Mättig,J Proudfoot,M Battaglia,A Lopez Solis,A Andreazza,G Sauvage,V Sopko,P H Sales De Bruin,P De Jong,R Yoshida,P F Giraud,G Volpi,B Gibbard,J Wetter,S Farrell,K Bos,T Scanlon,Yu A Tikhonov,P Van Gemmeren,K A Johns,K J Anderson,M A B Do Vale,M Beretta,B A Long,L Bellagamba,D A Soh,P D Thompson,A M Cooper-Sarkar,J Rothberg,S Willocq,M Moreno Llácer,E J W Moyse,F M Giorgi,V Castillo Gimenez,L R Flores Castillo,A J Lankford,T P S Gillam,D De Pedis,F Anulli,M Vranjes Milosavljevic,G Mc Goldrick,T Moa,B Åsman,R Piegaia,A Di Girolamo,A P Colijn,M Stanescu-Bellu,D Gillberg,M Ziolkowski,V Rossetti,G Gonzalez Parra,I Massa,S De Cecco,P Chang,T Kawamoto,V Andrei,H G Sander,E Bergeaas Kuutmann,D I Narrias Villar,S Argyropoulos,M Garcia-Sciveres,J E Pilcher,A Korn,A Ferrer,R Caputo,A N Karyukhin,S Jin,K H Hiller,A De Santo,S Prell,R R M Fletcher,D Lopez Mateos,E Yu Soldatov,Z Vykydal,K J R Cormier,E Fullana Torregrosa,P Skubic,G Mikenberg,J B Liu,I Santoyo Castillo,K Potamianos,M E Pozo Astigarraga,P Nevski,R F Naranjo Garcia,R S Orr,F Lo Sterzo,A C König,M I Gostkin,D P Benjamin,Y Sasaki,E P Le Quilleuc,H Ten Kate,M C N Fiolhais,S H Oh,A Ezhilov,J A Klinger,B Sarrazin,W Kozanecki,S P Denisov,P C Van Der Deijl,A Di Simone,M Pedersen,S Passaggio,K K Gan,A Kruse,R P Middleton,D Pohl,P M Tuts,R Kowalewski,M King,D Simon,D Su,R Bartoldus,S M Romano Saez,A Gomes,M N K Smith,S Timoshenko,I Ravinovich,R Cherkaoui El Moursli,R F Y Peters,D Boscherini,N C Edwards,D M Seliverstov,J C Hill,D V Dedovich,R D Schamberger,Y Komori,F K Loebinger,E Romero Adam,G Hughes,H Namasivayam,M Faucci Giannelli,R L Mccarthy,M Kuze,M Del Gaudio,A L Yen,H Czirr,E Hines,A Onofre,C A Chavez Barajas,R E Ticse Torres,A De Salvo,L Mandelli,N Van Eldik,J T P Burr,G A Chelkov,M Rescigno,M Cano Bret,D Amidei,J-Y Hostachy,Y Li,C Geng,R K Daya-Ishmukhametova,T Theveneaux-Pelzer,S Zimmermann,E Torró Pastor,M C Van Woerden,P A Bruckman De Renstrom,A T H Arce,W Blum,J Silva,D Rodriguez Rodriguez,K Sliwa,S P Amor Dos Santos,P Gagnon,M Karnevskiy,Pa Malecki,C Di Donato,J R Carter,S P Y Yuen,M Tyndel,S Nektarijevic,A V Akimov,M Rammensee,B Di Micco,G Polesello,N Lorenzo Martinez,J Bilbao De Mendizabal,G Introzzi,A T Watson,R J Hawkings,C Dallapiccola,Y Benhammou,F Rauscher,E V Bouhova-Thacker,C M Hawkes,J M Iturbe Ponce,J R Bensinger,E Von Toerne,A M Wharton,B Pearson,G Lehmann Miotto,L Lopes,S Cabrera Urbán,S L Wu,S P Ahlen,C P Ward,F Salvatore,P Giromini,R M Barnett,B D Cooper,O Rosenthal,C Schmitt,W J Murray,M A Baak,J Machado Miguens,M Morii,S Fernandez Perez,C Padilla Aranda,Y Bai,J E Salazar Loyola,E Graziani,L Feremenga,J Wotschack,S Viel,A B Fenyuk,P K Teng,S Kaneti,L S Ancu,A S Thompson,J G Panduro Vazquez,M D M Capeans Garrido,E B F G Knoops,L Di Ciaccio,S H Kim,F De Lorenzi,G N Taylor,J Barreiro Guimarães Da Costa,P C F Glaysher,J Llorente Merino,B M Waugh,Y Ilchenko,E Jansen,L A M Wiik-Fuchs,W-M Yao,Y F Ryabov,N Giokaris,N S Dann,A A Korol,C Maiani,A A Nepomuceno,S D Worm,S Schaetzel,B Martin,T R V Billoud,M C Hansen,J.-B Blanchard ,K F Read ,M Corradi,Y Zhao,M C Lanfermann,A Marzin,V Cavasinni,S Resconi,X Sun,A Schoening,K Hanawa,S Jiggins,I Gkialas,H Oberlack,A G Goussiou,Y Ninomiya,R Polifka,B M Wynne,A E Baas,L Heinrich,A Pin ,I Gorelov,J Guenther,P Fernandéz Martinéz ,S Banerjee ,S Goldfarb,R Konoplich,A T Law,L Roos,A A Maier,H Sandaker,S Kama,C Schillo,J Elmsheuser,F Rizatdinova,H Torres,P Bagiacchi,E Kajomovitz,B Haney,H Y Song,P Conde Muíño ,A Hadef,O Kivernyk,S Simion,M Backes,T Lazovich,J Carvalho,А Антонов ,I Carli,J Su,L Liu,R Hickling,T Heim,F Corriveau,E Mountricha,S Maltezos,A Kupčo ,S Kuday,A Kamenshchikov,F Legger,T R Wyatt,D Britton,S Oda,T Dado,E Guido,A Cerri,H C Cheng,V O’Shea,M Lazzaroni,S Hassani,J Salt,M Dumančić ,L Perini,T Sýkora ,A Picazio,S Turchikhin,V Lyubushkin,U Blumenschein,A Salzburger,M Sannino,P O J Gradin,P T E Taylor,A Milov,N W Shaikh,B K Gjelsten,L Massa,M Fincke-Keeler,A Peyaud,H Evans,G D Carrillo-Montoya,G Conti,D Bogavac,F Winklmeier,A Cattai,N P Hessey,I Wingerter-Seez,K Yamauchi,L Kashif,K Köneke,P Urquijo,C W Kalderon,K Gregersen,W B Quayle,B Galhardo,R Mount,S Kuehn,E Carquín ,L Chytka,I R Boyko,J H Vossebeld,A Salvucci,A G Kharlamov,W Taylor,F J Wickens,P Gutiérrez ,T Fusayasu,P Bussey,M J White,L P Calôba ,E Cheremushkina,A Valero,C Sbarra,K Zengel,N Calace,P F Harrison,T Kishimoto,Z J Grout,S N Karpov,M Homann,A Usanova,M Kado,Tom Neep ,Y Ikegami,D V Perepelitsa,C J Potter,M Dano Hoffmann,E Nurse,B Allen ,R Sobie,R L Sandbach,R M Neves,R Klingenberg,G Sekhniaidze,W Walkowiak,S Raddum,L Vacavant,M Diamond,J Dingfelder,A Doria,J Seixas ,B Stelzer,G Alexander,L Dell’Asta,T Hryn’Ova,O Arslan,J Lorenz,Y Yamazaki,R Vari,N Öztürk ,G Pásżtor ,J Wang,C Gütschow ,T Sumida,H P Beck,E Ertel,G Y Jeng ,D Melini,U Landgraf,D Derendarz,R N Clarke,P Starovoitov,H Liu,D Calvet,J Stark,R R Hinman,K Korcyl,П Б Шаталов ,S M Wang,D Lynn,E Petrolo,B Abeloos,B Ristić,C Antel,M Sahinsoy,T Tashiro,A J Chuinard,B Weinert,M C Stockton,B Tong,A Chafaq,Y Arai,N Krumnack,R W Stanek,T Lenz,L Rinaldi,M Bellomo,E Shulga,Cong Peng ,A Sapronov,D Cinca,C Anastopoulos,J Yu,M Schumacher,D Hayakawa,S Ryu,T Yamanaka,S Tapprogge,J Love,M Vos,Ph Gris,N Ruthmann,M Biglietti,C Bertella,C David,M Mantoani,J Meyer,V Šimák ,A M Zaǐtsev ,S Rajagopalan,T Naumann,S Che,S Wahrmund,M Janus,A Sopczak,D Berge,I A Minashvili,E Simioni,A Knue,M Gilchriese,R Rezvani,Z Yan,P Hodgson,F M Brochu,T Farooque,C Gwenlan,A Undrus,W Vandelli,А С Кожин ,B Cole,N Ishijima,R J Falla,Chengguang Zhu ,P Puzo,X Lou,H Kolanoski,F Cerutti,V Vacek,J Kretzschmar,R Hauser,A E Barton,M Lévy ,G C Grossi,D Cameron,S Blunier,O J Winston,M Zinser,T Nguyen Manh,N Besson,E Duchovni,I Dawson,T Kühl ,S Li,O K Baker,I Yusuff,E Panagiotopoulou ,P Rados,H L Russell,S Morgenstern,O Kortner,G Salamanna,E B Diehl,M Donadelli,P Anger,S Koperny,T Lagouri,S Schlenker,P Kodyš ,M K Köhler,M Vlasak,C Grefe,M Spalla,O Jinnouchi,N Makovec,M Hasegawa,C Luci,K M Black,M Sandhoff,S Asai,P Calfayan,J Rieger,A K Çiftçi ,M Kocian,J Jiménez Peña ,R M Fakhrutdinov,V Pozdnyakov,R A Mcpherson,K Pachal,A J Brennan,O Kepka,K Lantzsch,S Palazzo,R Debbe,Y K Heng ,O L Rezanova,N-A Rosien ,V Cavaliere,E Kneringer,J E Derkaoui,Y Nakahama,M Stoebe,S Tsuno,N E Pettersson,N Morange,M Wielers,W C Fisher,A A Solodkov,F Hartjes,T Kaji,F Anghinolfi,C C Ohm,D Varouchas,A K Kopp,J Kvita,A Ventura,C Helsens,S Laplace,R W Moore,M Nagel,F Hubaut,W Liebig,G Rybkin,S Stamm,W Iwański ,Y Kataoka,G Borissov,Andrew Beddall ,A Aloisio,C Rogan ,Z Hubáček ,S Chan ,M V Chizhov,J J Chwastowski,G P Gach,J W Hetherly,R Schaefer,S Terzo,G F Rzehorz,D L Adams,A Negri,T J Khoo,A Campoverde,P Stríženec ,H Iwasaki,U Kruchonak,T Slavíček ,C Alpigiani,B C Cerio,J Jongmanns,D Lacour,C Böhm ,M Sławińska ,M Düren,Hailong Ma ,Josef Urban ,F A Arduh,A A Snesarev,S Trincaz-Duvoid,I Brock,D Zerwas,J Erdmann,R Spighi,C Glasman,S Zambito,C Wang,J Lacey,J Hřivnáč ,T Colombo,M Marčišovský ,M Boehler,V Christodoulou,T Djobava,D Kobayashi,M Curatolo,K Nagano,F Touchard,D Gerbaudo,D K Jana,B Axen,A Gongadze,G Gagliardi,F Barreiro,M Romano,T Šfiligoj ,L Longo,M Escalier,K Shaw,H Hakobyan,A Ruiz-Martínez ,E Gorini,K Kleinknecht,A Kaluza,M Melo,S V Peleganchuk,E M Farina,R Walker,A Haas,T Alexopoulos,Y Nagasaka,J Pearce,A Baroncelli,P Davison,A Messina,K Todome,K Brendlinger,J Alison,S Guindon,D Hayden,B Kaplan,D A Demarco,D Costanzo,M Lokajı́ček ,J Manjarrés Ramos ,W H Hopkins,S Veneziano,W K Balunas,S Strandberg,G F Tartarelli,D Mori,H S Hayward,J Thomas-Wilsker,W Wang,A Dell’Acqua,D O Jamin,A Ciocio,M Spousta,V A Kantserov,M Swiatlowski,E Nagy,Ch Geich-Gimbel,M J Baca,B H Smart,C Fischer,P W Phillips,N Anjos,N Andari,A N Tuna,B K Wosiek,V O Tikhomirov,K Mochizuki,A A Komar,M Shochet ,S Spagnolo,J A Frost,S Campana,G Cottin,I Vukotić ,J Boyd,M Frate,I Nakano,F Prokoshin,H L Li,D Biedermann,S J Batista,Z Idrissi,Lj Simić ,I N Potrap,S Norberg,G Marceca,H Feng,F Huegging,T Klioutchnikova,Z Zhao,F Siegert,M Lisovyi,A Cheplakov,K W Woźniak ,J Guo,E Lobodzinska ,G J Besjes,T Balestri,Y Horii,S Xella,S Camarda,J Kroll,N P Readioff,Y Makida,A A Grillo,C M Macdonald,J Duarte-Campderros,F Dallaire,V Tsulaia,S V Chekulaev,S Chekanov,O Brandt,K Belotskiy,Ç İşsever ,S Richter,L Pacheco Rodriguez,S C Lin,R Mantifel,R Kukla,I L Gavrilenko,María Teresa Dova ,C Nellist,S S Mortensen,S J Head,V Canale,D Francis,M C Kruse,M K Ayoub,J De Vivie De B Regie ,B D Schoenrock,M Dris,T Jakoubek,K Hara,R Richter,D Hu,D Lewis,K Bendtz,C Weiser,G Piacquadio,T M H Wolf,E Ros,P G Hamnett,D Muenstermann,P Klimek,X Zhuang,M Gignac,J Cantero,R Cardarelli,R Ferrari,N Orlando,M A Pleier ,N Zhou,S Vlachos,M Antonelli,S Tsiskaridze,K Yoshihara,A Demilly,P Loch,A I Mincer,H Sakamoto,A Taffard,L J Beemster,G Alimonti,H Jiang,C Serfon,E G Tskhadadze,L Rehnisch,J Adelman,A Mengarelli,M Trovatelli,K Choi,F Bauer,J Veatch,O Zenin,G Siragusa,C Gemme,L Helary,M Shiyakova,S Grancagnolo,P Bagnaia,Z H Citron,E Ladygin,J S Ennis,Q Li,N Barlow,H Pernegger,K Toms,S Cheatham,A Shmeleva,E Petit,S Elles,S Bethke,J Mahlstedt,D Sidorov,S González-Sevilla ,M Venturi,R Mashinistov,E Cheu,D Madaffari,T Javůrek,C Fukunaga,C Young,M Spangenberg,J Schaeffer,E N Thompson,A Vest,R E Owen,C Meyer,E Cavallaro,M Vogel,E Lytken,S Dhaliwal,L Cerrito,D Froidevaux,M Petrov,G Unal,M Nozaki,Y Wu,Z Liang,E Karentzos,O Novgorodova,C Luedtke,G Aad,T Barillari,A Lehan,M Hirose,M Bianco,R Staszewski,J Olszowska,A Nisati,M A Shupe,Y Sugaya,L Chevalier,S C Seidel,J J Heinrich,S J Maxfield,J Howarth,D Lellouch,C P Bee,K Sato,V A Bednyakov,V S Martoiu,J D Mansour,L Gonella,P Tipton,F Fassi,Katharina Bianca Jakobi ,N Haddad,O Viazlo,V Chiarella,H Severini,K Einsweiler,E Khramov,E Lipeles,M Owen,M Ronzani,D Quilty,E Yildirim,L Guan,C Lacasta,C Ciocca,T Andeen,C Rizzi,F Pastore ,L Kanjir,M Alhroob,N P Dang,P Grenier,L J Armitage,Z Barnovska-Blenessy,A Clark,T Cao,C Li,A B Kowalewska,B Meirose,C Gumpert,S.‐C Hsu ,T Ekelöf ,H Jivan,L Colasurdo,L J Levinson,R Ospanov,A Tricoli,R Tafirout,N Govender,S Protopopescu,M Przybycień ,R Turra,J E M Robinson,R Monden,N Kondrashova,A Mann,L S Bruni,N Benekos,S Roe,M M Perego,M Kagan,I Caprini,J Zalieckas,L Luminari,J Wittkowski,G Galster,C Y Shehu,B Trocmé,M Begel,A R Stradling,M Ghneimat,Š Valkár ,T A Beermann,J Mitrevski,D Pallin,J Jia,L Jeanty,A Annovi,L Valéry ,S Boutle ,H Arnold,A Cervelli,D Fournier,K De,D Schaile,B A Petersen,F A Dias,R Pedro,F Fiedler,A Petridis,E Coniavitis,A Kravchenko,P Schacht,H A Gordon,M Filipuzzi,J Saxon,L Vigani,S Suzuki,I Roth,M Davies,À Zoccoli ,C A Lee,O Bulekov,B Mindur,P A Gorbounov,S Jakobsen,D Bullock,T Vickey,P Fassnacht,P Pais,V E Özcan ,L I Mcclymont,A Floderus,T B Huffman,O A Ducu,M S Neubauer,D Bertsche,V Boisvert,H M Gray,K Kreutzfeldt,E Tassi,C F Anders,D G Charlton,K A Looper,D Tsybychev,I Bloch,F Derue,P Urrejola,H Schulz,M K Bugge,M Goblirsch-Kolb,M A Díaz ,K M Loew,L Poggioli,M Cavalli‐Sforza ,P Savard,S Adomeit,S Darmora,S Suchek,F Cirotto,D Scheirich,F Monticelli,A Pingel,J B Beacham,Z Zhang,D Šálek ,M Martı́nez ,W Verkerke,W Wagner,R Kass ,S Jabbar,S Hellman,M F Tripiana,K Kroeninger,C Galea,N Vranješ ,M R Sutton,C M Delitzsch,J Brosamer,I Hinchliffe,F Ito,S Sun,J Zhang,F C Ungaro,S Leontsinis,D A Scannicchio,N Berger,Z Gecse,T Golling,X Lei,T Varol,Y Tayalati,L Y Shan,T Heck,V Ellajosyula,M B Skinner,M Demichev,A Shcherbakova,V Cindro,K Hamano,G Darbo,S Berlendis,S Schmitt,R Keeler,O Sasaki,A Miucci,C Camincher,E Schöpf ,M Schott,C Hsu,M Iodice,E Busato,R Narayan,V Radeka,C Feng,E M Baldin,H Wang,M Muškinja,B E Cox,M Arratia,R M Bianchi,F Ukegawa,S P Alkire,I Burmeister,S 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doi:10.1140/epjc/s10052-016-4418-9

Abstract

This paper presents a dedicated search for exotic decays of the Higgs boson to a pair of new spin-zero particles, H rightarrow aa, where the particle a decays to b-quarks and has a mass in the range of 20–60 GeV. The search is performed in events where the Higgs boson is produced in association with a W boson, giving rise to a signature of a lepton (electron or muon), missing transverse momentum, and multiple jets from b-quark decays. The analysis is based on the full dataset of pp collisions at sqrt{s} = 13,mathrm{{TeV}} recorded in 2015 by the ATLAS detector at the CERN Large Hadron Collider, corresponding to an integrated luminosity of 3.2 text{ fb }^{-1}. No significant excess of events above the Standard Model prediction is observed, and a 95,% confidence-level upper limit is derived for the product of the production cross section for pp rightarrow WH times the branching ratio for the decay H rightarrow aa rightarrow 4b. The upper limit ranges from 6.2 pb for an a-boson mass m_a = 20,mathrm{{GeV}} to 1.5 pb for m_a = 60,mathrm{{GeV}}.

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