ATLAS Run 1 searches for direct pair production of third-generation squarks at the Large Hadron Collider.

G Aad,H Pirumov,S Farrell,P H Hansen,P Stolte,P Pani,S J Maxfield,C Dallapiccola,M Giulini,R Hanna,J E García Navarro,V Radescu,C Oropeza Barrera,W Kozanecki,V Boldea,A Floderus,E Davies,B Meirose,A M Nairz,S H Kim,R W Moore,S Rosati,P E Sidebo,E Strauss,L Merola,L Y Shan,J Schwindling,A Knue,R P Thun,K Jakobs,J F Laporte,A Firan,G Calderini,H J Stelzer,C Gwenlan,T Hayashi,P Federic,E Koffeman,M Aoki,M Owen,P A Love,A Kugel,M El Kacimi,A Sbrizzi,V S Bobrovnikov,B E Lindquist,P M Manning,B A Long,C Roda,J Walder,M Wessels,M Sessa,V V Kostyukhin,F Hariri,M Nomachi,N Wermes,G Gaycken,D Bertsche,F U Bernlochner,M J Flowerdew,S J Haywood,A Gaudiello,S George,L J Beemster,A A Talyshev,C B Gwilliam,A A Komar,J Boyd,C Bertsche,A Aloisio,J A Benitez Garcia,Z Barnovska,M Kretz,D Schaefer,L Zwalinski,A Mccarn,H G Sander,B Sopko,D Puddu,E Duchovni,J K Anders,J Brown,M Raymond,N G Gutierrez Ortiz,C Fischer,S Nektarijevic,D O Jamin,B Pearson,G Gaudio,V Arnal,J-F Arguin,Y Tayalati,M Leblanc,D Ta,A S Chisholm,J Qian,Y Zhao,A Kravchenko,M A Parker,T Z Kowalski,G Aielli,I Bloch,B M Barnett,E Panagiotopoulou,S Jiggins,B G Pope,L De Nooij,H M Braun,S M Mazza,S J Hillier,C Hsu,M A Pickering,O Gabizon,G Gilles,L Lambourne,F Rauscher,D A Maximov,P O Deviveiros,C Blocker,S Koperny,W Lampl,D Muenstermann,H Musheghyan,L Rehnisch,B Malaescu,H H Williams,K Nagano,T Vazquez Schroeder,J P Thomas,M Thomson,S M Consonni,D Froidevaux,S Yacoob,G Sekhniaidze,C Deluca,S Binet,U Kruchonak,Z M Karpova,I Wingerter-Seez,A Klimentov,J Elmsheuser,L Liu,R C W Henderson,C Kourkoumelis,F G Oakham,H Kroha,A Ovcharova,A A Snesarev,D Ventura,J Jentzsch,J Sánchez,T Wenaus,H Feng,A Tricoli,E Kladiva,H Severini,G Hughes,G N Hamity,O L Rezanova,S Suzuki,L Fayard,C E Pandini,P Rados,H Abreu,A Strandlie,C Sbarra,M Shimojima,B L Clark,H Wang,K Suruliz,D A A Geerts,L Helary,J Zhong,C Lapoire,J Gramling,J Griffiths,D Gillberg,M A L Leite,M Ikeno,T Wengler,J Silva,J Reichert,A Seiden,P Anger,M Ridel,A Taffard,E Dubreuil,T J Khoo,N Govender,H Czirr,B M Wynne,D C O’Neil,G Snidero,H Khandanyan,F A Dias,O Igonkina,A G Bogdanchikov,C Jeske,D P Benjamin,J Howard,O Novgorodova,T Hryn’Ova,I Riu,P Nevski,L M Mir,A F Saavedra,C Wasicki,I Bozic,A Mehta,J J Chwastowski,K Köneke,R Astalos,K Tokushuku,M Antonelli,J Bouffard,D Vladoiu,B Burghgrave,A I Mincer,M Schumacher,M J Da Cunha Sargedas De Sousa,D Schaile,T Cuhadar Donszelmann,N B Atlay,D Álvarez Piqueras,V Chernyatin,C Glasman,S J Wollstadt,A D Hawkins,M Vlasak,A Sansoni,L Chen,H Otono,A M Henriques Correia,S Strandberg,R Schwienhorst,Z Idrissi,S Prasad,R Nagai,S Rave,J C Hill,H A Gordon,H Burckhart,C A Lee,T Serre,N A Styles,T Ravenscroft,N Rompotis,B Ristić,D A Soh,N Barlow,J M Butterworth,M E Stramaglia,J Bilbao De Mendizabal,A S Kozhin,S Schlenker,G Zobernig,M Levchenko,T Fusayasu,P Sommer,Y Li,V Cindro,D Jennens,A R Stradling,B M Waugh,M Negrini,W Cleland,K Bos,R Stroynowski,M A Baak,H Torres,S Hageböck,E Shabalina,J Hobbs,T J Jones,D Hall,R T Chislett,A Brandt,R Aben,C J Riegel,V Khovanskiy,M Cano Bret,V Radeka,T Del Prete,N Flaschel,A Zhemchugov,S M Wang,D Zhang,C Giuliani,J Kanzaki,G Gustavino,A J Horton,M Kagan,N P Hessey,K Motohashi,M Wu,V B Vinogradov,J T Childers,C Gay,W D Breaden Madden,A N Tuna,M Franchini,L Roos,C Maiani,N Karastathis,J Moss,B M M Allbrooke,C Leonidopoulos,S F Brazzale,P Rose,L Barak,K Belotskiy,A A Korol,V S Martoiu,A Onofre,L Sawyer,M Kaci,V Kouskoura,R Voss,E B Diehl,R Walker,G D Carrillo-Montoya,L Colasurdo,L Di Ciaccio,D Oliveira Damazio,E Lipeles,A J Brennan,E W Varnes,J Donini,S Terada,S Kortner,S Norberg,K A Johns,A Policicchio,E Lytken,C C Chau,L E Price,S Tsiskaridze,S Odaka,A Corso-Radu,D Lynn,A Succurro,L Iconomidou-Fayard,T Pauly,B Di Girolamo,J E Sundermann,A Milov,Y Hernández Jiménez,V Sanchez Martinez,D Tsionou,G Anders,K Bachas,J E Blanco,A A Minaenko,D M Seliverstov,B Brau,P Gauzzi,A Vaniachine,M Sandhoff,T Vickey,I Ochoa,D Tsybychev,D Guest,D Giugni,A Manfredini,F De Lorenzi,A Kourkoumeli-Charalampidi,S Dhaliwal,J A Parsons,P H Sales De Bruin,K Karthik,F Sforza,K Sekhon,M Fiascaris,B Giacobbe,R A Keyes,R Yoshida,U Parzefall,A Pacheco Pages,D Lacour,Ph Schwemling,A Karamaoun,B Auerbach,I Burmeister,I Gorelov,D Hellmich,F Balli,H Takai,E Thomson,B Gaur,S Goldfarb,S Gadatsch,R Rezvani,J K Behr,F Ukegawa,L Coffey,D Pohl,E Brost,A Henrichs,S Gadomski,D Cinca,R M Bianchi,B Abbott,J Jovicevic,M Battaglia,L Duflot,C Serfon,C Zimmermann,P Puzo,K Kawagoe,Y Rozen,J Fuster,E Gozani,O Stelzer-Chilton,P Dondero,J Veatch,L A Spiller,E Tiouchichine,A Milic,P Krieger,J W Hetherly,J Nadal,T Koi,E Bergeaas Kuutmann,A Tudorache,V Christodoulou,W Edson,J Schaeffer,N Kimura,D Shoaleh Saadi,S Grinstein,A T Doyle,S Wenig,O C Endner,M Davies,A White,A Sfyrla,M Kobel,A M Litke,D De Pedis,E Piccaro,J Meyer,S Maltezos,R Sobie,S Shimizu,M Mantoani,S C Lee,A Amorim,J Ye,F Seifert,A Palma,A Messina,D G Charlton,M A Chelstowska,S Jabbar,B Åsman,L Chytka,T Maeno,V R Lacuesta,S C Seidel,L Hauswald,A Oh,G Piacquadio,A Kotwal,M Corradi,V Vrba,I Hristova,D Britzger,P Schacht,R Keeler,J Erdmann,X Lei,V Morisbak,C Alpigiani,V A Kantserov,R Caminal Armadans,J Agricola,D M Rebuzzi,G Borissov,R White,K K Gan,S Spagnolo,R J Hawkings,S Gkaitatzis,J Liebal,B Martin Dit Latour,E Lançon,A Lanza,S Caron,A Renaud,B Stelzer,F Legger,F Malek,N Schuh,K P Oussoren,A Gershon,X Ju,S Fleischmann,N F Castro,R Nayyar,A Di Mattia,S Argyropoulos,A Usanova,J U Mjörnmark,O Sasaki,P Loscutoff,M Nozaki,R Mashinistov,J A Stillings,N P Readioff,D Bruncko,M Ishitsuka,F Corriveau,O A Ducu,H G Wilkens,Y Amaral Coutinho,M Dobre,R W Gardner,N Huseynov,J Dassoulas,S Chekanov,S Darmora,A Borisov,M Ugland,D Pallin,H Lacker,K Schmieden,R Soualah,S Tokár,M Dris,T Buanes,J Wotschack,A Hrynevich,E Cheu,S Kohlmann,B B Tannenwald,T Theveneaux-Pelzer,R Vigne,J Faltova,M Kocian,J.-B Blanchard,V Vercesi,A Gomes,S Biondi,Z Kohout,G D Hallewell,J A Valls Ferrer,C Hengler,S Shushkevich,M Shiyakova,S Cole,M Warsinsky,D Lellouch,R Di Nardo,C Willis,J Sjölin,M P J Landon,M Franklin,S V Chekulaev,S Kluth,K Nikolopoulos,P Grenier,K Choi,J Kretzschmar,F Alonso,E Ritsch,T Barillari,S Tsuno,S White,M J Shochet,S Ghasemi,H Von Der Schmitt,A Calandri,C Schillo,X Wang,L Jeanty,S Haug,S Schaetzel,L Zanello,Y Smirnov,G Sabato,J Van Nieuwkoop,L Guan,H J Lubatti,E Higón-Rodriguez,P Morettini,M Saimpert,L E Pedersen,S Moritz,T Saito,U Klein,J Del Peso,K Kreutzfeldt,W Bhimji,Y Arai,A S Boldyrev,P Bussey,S Leontsinis,F Cardillo,A Ferrer,D Boscherini,M J Costa,R Kehoe,H Y Song,B Osculati,O Arnaez,D Emeliyanov,S Hasegawa,A Lucotte,S Kuehn,J Abdallah,D Cavalli,I A Budagov,M Backes,S Guindon,R Debbe,M V Chizhov,W Lukas,A Kapliy,R Brenner,S Mohapatra,M Biglietti,M J Alconada Verzini,R E Long,S M Gibson,R M Neves,P S Miyagawa,P C F Glaysher,D Krasnopevtsev,F Huegging,G Mchedlidze,L Chevalier,J Carvalho,P Butti,R Iuppa,C Fukunaga,H Oide,H Pernegger,D Di Valentino,P Mättig,R Pezoa,D Levin,S Yamamoto,Y Fang,P Bagiacchi,L Lopes,C G Lester,T Mueller,N Anjos,A A Affolder,J Pearce,L March,R Poettgen,M C Hodgkinson,F Vazeille,C Galea,S Giagu,A Morton,A Farbin,M Rescigno,I Caprini,A Schwartzman,E Protopapadaki,R Vuillermet,Ph Gris,D Whiteson,A Di Domenico,A Irles Quiles,A V Akimov,S Tarem,J Hejbal,D Amidei,P K Teng,Ph Schune,W H Bell,C Eckardt,M J Kareem,F Spanò,R Vanguri,S Sun,C W Kalderon,A A E Bannoura,A G Myagkov,P Pais,H Li,Y Nagai,S Swedish,G Crosetti,D Berge,N Berger,M D’Onofrio,L Manhaes De Andrade Filho,J Monk,M Moreno Llácer,M Düren,H Reisin,V M Kotov,H Hakobyan,S W Weber,A D Pilkington,O Lundberg,B A Dolgoshein,N Venturi,Z Marshall,M Nessi,M Primavera,V S Lang,M Hohlfeld,S Passaggio,C Suhr,F A Arduh,A Poley,M Livan,M Elsing,Y Guo,D Zanzi,A K Morley,I Nakano,H Bachacou,R Klingenberg,E Fullana Torregrosa,M Pagáčová,S Webb,D Duschinger,J Maneira,D Casadei,V Tsulaia,A Artamonov,L A Kogan,H P Skottowe,E V Bouhova-Thacker,S Bentvelsen,T Kono,C Chen,G Eigen,M Morii,C Ferretti,C Zeitnitz,J Cochran,D Barberis,A Ferretto Parodi,F Friedrich,A Hasib,T Balestri,M Ellert,J R Bensinger,A Tykhonov,Ch Geich-Gimbel,D Varouchas,F Bertolucci,K D Finelli,M Morgenstern,L N Smirnova,L Živković,J.-F Grivaz,A Schoening,D Kobayashi,O Ricken,L Aperio Bella,P Camarri,C Di Donato,W Van Den Wollenberg,S A Olivares Pino,J Lorenz,Y Yasu,Y Jiang,A Negri,J Guo,S Roe,K Zhukov,R Tafirout,M Nagel,A C Schaffer,A Limosani,L Köpke,H Namasivayam,R Richter,K Shaw,C Feng,F Ceradini,J Kvita,G Mornacchi,D Scheirich,M Dührssen,M Klein,J D Hansen,S M Shaw,P A Bruckman De Renstrom,E Torró Pastor,S J Kahn,C S Pollard,P W Phillips,U Landgraf,N I Zimine,L A M Wiik-Fuchs,M Purohit,M H Genest,E J Feng,M Abolins,L R Flores Castillo,C A Chavez Barajas,T Sumida,T Moa,K Kleinknecht,M S Rudolph,M Barisonzi,M Donadelli,A Kaczmarska,C M Hawkes,P A Gorbounov,M Bruschi,M Rotaru,S Nowak,J B Liu,P Gallus,P C Van Der Deijl,T Flick,S Falciano,R Cardarelli,G Gagliardi,A Sopczak,O E Vickey Boeriu,E Yatsenko,A M Cooper-Sarkar,H Ma,N Zhou,J E M Robinson,G Galster,S Zambito,A Yamamoto,J Albert,J E Derkaoui,P Urrejola,T Kwan,Y Liu,S Bethke,J Knapik,J Ferrando,C L Sotiropoulou,J Dietrich,B Sarrazin,A Picazio,H L Russell,K Mahboubi,P Iengo,R Van Der Leeuw,P Grafström,K Kordas,S V Peleganchuk,H Von Radziewski,A E Baas,T Lenz,E Magradze,T Kobayashi,S Hou,T Lazovich,W J Dearnaley,N Kondrashova,M Shapiro,F M Giorgi,X Zhang,K Grimm,H Zhang,V Vorobel,F Djama,J Levêque,E Simioni,M G Vincter,G Jarlskog,E Gramstad,N Bruscino,W Trischuk,S Calvet,L Feligioni,L Brenner,A Dewhurst,M Tyndel,H K Hadavand,D Derendarz,X Sun,M Medinnis,G A Chelkov,J Metcalfe,Y Ikegami,R D Harrington,D Pluth,L Gauthier,R Rosten,P Czodrowski,O Jinnouchi,F Fassi,F Winklmeier,P Radloff,P Kluit,D Hayden,G Cowan,A I Etienvre,E Dawe,J Cummings,S Adomeit,C Monini,I Yeletskikh,M K Bugge,L Adamczyk,M C N Fiolhais,G Mikenberg,L Gonella,D Bogavac,T R Holmes,W Wiedenmann,S H Oh,N Asbah,Y Abulaiti,J J Teoh,Z Gecse,Y Wu,U Gul,W Liebig,T A Beermann,A Dell’Acqua,A Venturini,C A Solans,J Janssen,S Prell,J Beringer,K Ikematsu,P Calfayan,J K Nilsen,S H Connell,F Scutti,E S Kuwertz,M Fanti,D Kisielewska,G Azuelos,E J Gallas,I A Connelly,F Buehrer,V Cavaliere,A Mengarelli,F Zhang,O Benary,T Tashiro,K M Ecker,T Kondo,T Nakamura,M Demichev,M S Neubauer,G Brooijmans,M Talby,W Okamura,W C Fisher,M Solar,A Cortes-Gonzalez,D Madaffari,R M Fakhrutdinov,A L Maslennikov,K Yorita,G Volpi,F Siegert,M Bellomo,F Berghaus,A Ochi,W Vandelli,J Dingfelder,V Scharf,K-J Grahn,M Proissl,L Bellagamba,T Scanlon,V Hedberg,I Deigaard,M Haleem,J L La Rosa Navarro,S Muanza,A Sanchez,H Sakamoto,E Scifo,G Sauvage,S Heim,L Goossens,S De Cecco,F M Brochu,L Beresford,W J Murray,J Kirk,A Robson,V Gratchev,M Tomoto,Y Unno,D Pantea,K A Parker,A Koutsman,M Lassnig,P Laycock,A Hoummada,R Ströhmer,A A Elliot,W-M Yao,P Ioannou,J Guenther,J Boudreau,P Fleischmann,G Costa,T Barklow,A Nikiforov,D E Marley,F Lo Sterzo,E Paganis,P Bechtle,R De Asmundis,S Tapprogge,P Wienemann,K Prokofiev,A Washbrook,K W Mcfarlane,M M Stanitzki,S Resconi,F Safai Tehrani,G Ernis,C Weiser,S Asai,J Henderson,M Wittgen,A T Law,N R Bernard,K Augsten,D Schouten,W Davey,A Boveia,V Chiarella,P D Thompson,N Morange,G Marchiori,S P Denisov,Y Minami,T R Wyatt,I Chalupkova,A J Chuinard,J Caudron,R Di Sipio,B Laforge,A Ezhilov,D Sosa,S Mergelmeyer,M Zinser,A Buzatu,F Lanni,J Bortfeldt,P Pralavorio,O Viazlo,B J O’Brien,T Masubuchi,A Dafinca,X Ruan,B Kaplan,Y Takubo,P A Delsart,W H Hopkins,A Salamon,L Lee,T Mitani,A S Hard,Y Ming,L Luminari,E Ros,A Korn,C Schiavi,V Canale,D Xu,A T Watson,L Bianchini,P F Harrison,P V Tsiareshka,S Snyder,J M Seixas,J Kroseberg,F Ledroit-Guillon,X Zhao,D A Scannicchio,A Demilly,R Cantrill,B T King,C Debenedetti,W A Leight,F Fiedler,Y Sakurai,P Laurelli,L Feremenga,P R Newman,S J Head,V O Tikhomirov,H Bilokon,N C Edwards,I Brock,S Kersten,K Nakamura,H Kagan,O L Fedin,M Milesi,M Teixeira Dias Castanheira,R Mazini,G P Gach,S Pagan Griso,K Terashi,J Mitrevski,F Luehring,J Ivarsson,D Salvatore,P Mullen,N Van Eldik,C Lacasta,J R Dandoy,P S Wells,A Ouraou,L Alio,D South,A Paramonov,T B Huffman,I R Boyko,A C König,A Macchiolo,M Spousta,M Atkinson,G A Stewart,A L Yen,M Dell’Orso,J Wittkowski,Z Zhao,A Zibell,M F Tripiana,J Khubua,S P Bieniek,G Susinno,X Lou,F Meloni,S Palestini,M T Dova,E Oliver Garcia,K H Hiller,I N Potrap,I A Minashvili,S Laplace,L S Kaplan,A S Mete,A Manousakis-Katsikakis,L Cerrito,N Javadov,T Velz,K Kroeninger,T Okuyama,Y Hasegawa,M Ronzani,D Sidorov,M Liu,O Rosenthal,A Forti,J Bronner,H C Cheng,V Vacek,G Mancini,N Tsirintanis,K Smolek,V Garonne,T A Hülsing,I M Trigger,B Gorini,P Ge,P Mastrandrea,M Rijssenbeek,Y Nakahama,V Ippolito,E Lobodzinska,M Yamada,M Rammensee,H Iwasaki,Y Benhammou,M Dunford,G Spigo,J Glatzer,B H Smart,M Schreyer,O Beltramello,J Huston,D Hu,C Diaconu,M Fraternali,M Stoebe,V Boisvert,R Nisius,A Rimoldi,B A Schumm,F Petrucci,P Chang,S Schaepe,A Coccaro,P Sherwood,E Monnier,J A Aguilar-Saavedra,R E Blair,G N Taylor,N Konstantinidis,J G Saraiva,J Mattmann,H Van Der Graaf,S Jézéquel,K Hamacher,C Gatti,Z H Citron,J Saxon,R J Teuscher,L Schoeffel,S Maeland,D Simon,L La Rotonda,S Yu Smirnov,T Iizawa,R Lafaye,Z Rurikova,M Kado,S Hellman,G Barone,A Dattagupta,P Ferrari,H Akerstedt,N Massol,Z Yan,M Boehler,J Chudoba,K M Mercurio,A Romaniouk,D Blackburn,J Alison,P Catastini,S B King,A Madsen,Z Zinonos,R M Barnett,N Kanaya,R W Smith,S Kuleshov,A J Armbruster,G Zurzolo,M Zeman,N D Patel,A Fischer,P Giannetti,Y A Kurochkin,M F Watson,D Britton,T Yamanaka,P Starovoitov,J J Kempster,S Stamm,N C Ryder,L Vacavant,K Hara,C Malone,M J Schultens,C Padilla Aranda,Y F Ryabov,B C Cerio,S Kaneti,F M Garay Walls,Y Huang,M D M Capeans Garrido,K Brendlinger,M I Besana,R Caputo,S Jakobsen,S Stapnes,S Li,H Esch,S Protopopescu,A Zemla,R Piegaia,T Nooney,A Pranko,Y Kataoka,M King,T Ženiš,B E Cox,M Karnevskiy,K Yamauchi,U Bratzler,T Kohriki,Z D Greenwood,U Soldevila,T Trefzger,P Steinberg,E Pueschel,D K Jana,P J Lösel,A Trzupek,O M Kind,Y Kulchitsky,A M Soukharev,D Kyriazopoulos,L Tomlinson,I Santoyo Castillo,R E Owen,G Sedov,A Glazov,M Faucci Giannelli,E Romero Adam,R Van Der Geer,R R Hinman,P P Allport,B R Mellado Garcia,T Heck,H Kim,R Narayan,D Fournier,H Kurashige,M Villa,C Mills,H De La Torre,V Andrei,E L Barberio,A Gorišek,S Gentile,S Angelidakis,J Stark,A C Daniells,F Touchard,D Quilty,A Andreazza,P Giromini,P Savard,M Schott,P Balek,V J Martin,P De Jong,A Durglishvili,P Van Gemmeren,L Mandelli,L Li,R S Orr,B Lenzi,B Jackson,X Chen,J Zhu,B Schneider,R Pedro,R Wang,L Bryngemark,C Alexa,P Francavilla,I Yusuff,D Hirschbuehl,S Simion,R Mantifel,F Rubbo,A Dimitrievska,A N Sisakyan,R Brock,R Hertenberger,E Ertel,A Hamilton,C Gemme,R W L Jones,D V Dedovich,M Vreeswijk,L Mazzaferro,M Janus,S M Farrington,Y Okumura,M I Gostkin,M Piccinini,M R Jaekel,D Price,M Sosebee,A E Loevschall-Jensen,L Tremblet,C Troncon,J B Hansen,M Pedersen,M Trovatelli,M Homann,A N Karyukhin,K Einsweiler,C Taccini,T Brooks,A 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doi:10.1140/epjc/s10052-015-3726-9

Abstract

This paper reviews and extends searches for the direct pair production of the scalar supersymmetric partners of the top and bottom quarks in proton–proton collisions collected by the ATLAS collaboration during the LHC Run 1. Most of the analyses use 20 {mathrm{fb}^{-1}} of collisions at a centre-of-mass energy of sqrt{s} = 8 TeV, although in some case an additional 4.7 {mathrm{fb}^{-1}} of collision data at sqrt{s}= 7 TeV are used. New analyses are introduced to improve the sensitivity to specific regions of the model parameter space. Since no evidence of third-generation squarks is found, exclusion limits are derived by combining several analyses and are presented in both a simplified model framework, assuming simple decay chains, as well as within the context of more elaborate phenomenological supersymmetric models.

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