Measurement of the hadronic activity in events with a Z and two jets and extraction of the cross section for the electroweak production of a Z with two jets in pp collisions at $ \sqrt{s}=7 $ TeV

M Görner,W Dominik,P Capiluppi,S Taroni,I Yu,M E Pol,M Fisher,M Raidal,A Poll,A Raspereza,N Beliy,L Soares Jorge,W Lin,W De Boer,S Padhi,L Levchuk,K Sogut,B Marangelli,N Marinelli,M Kenzie,A Bean,R Loveless,R Gomez-Reino Garrido,J Flix,K Kaschube,T Danielson,B Dahmes,S Bansal,J.-P Merlo,J L Faure,G Petrucciani,J R Komaragiri,J G Smith,J Ribnik,A Mussgiller,P Bloch,U Husemann,E Sexton-Kennedy,A F Barfuss,F Hoehle,E A Albayrak,G Gomez Ceballos,A Taurok,L Gauthier,P Harris,S Rogerson,T Williams,G P Di Giovanni,J Russ,S Costantini,P Goldenzweig,P Wittich,Y Kubota,X Shi,N Wardle,B Stieger,D Ryckbosch,S Abdullin,E Berry,S K Park,J G Bian,A Sznajder,J Chen,I C Park,H W K Cheung,G Auzinger,A Nayak,H Rohringer,P Jarry,O R Long,L Kreczko,K Lassila-Perini,S Evstyukhin,S Petrushanko,L A T Bauerdick,S Shmatov,S Frosali,L Tikvica,L Millischer,A Ershov,S Liu,A M Guler,E Yazgan,R Horisberger,M De Palma,S Chauhan,G Broccolo,D Burton,A Drozdetskiy,S Alderweireldt,A Nikitenko,N Lychkovskaya,C Paus,A Dierlamm,A Tiko,S Griffiths,J N Butler,B Calvert,V Kozhuharov,D Wood,G Bruno,K Kovitanggoon,I Azhgirey,F Ptochos,W Lohmann,S Wimpenny,M Sani,T Speer,P Verwilligen,Y Tschudi,D Barge,E Boos,C Rohringer,V Kumar,B Asavapibhop,K Ranjan,N Redaelli,S Bilmis,F J Ronga,M Park,A Meyer,P Hebda,D Bodin,G Breto,M Walker,J Gronberg,T Ma,M Swartz,T Sinthuprasith,J Steggemann,P Papacz,I Katkov,I Puljak,H Enderle,J Lykken,A Barker,T Cornelis,L Uplegger,S Lacaprara,C Rogan,M Margoni,J Alexander,I Iashvili,P Shukla,A Solano,A G Delannoy,M Krämer,P Bargassa,N Manthos,N Daci,E Daubie,J Haupt,F Chlebana,M Jo,S Paktinat Mehdiabadi,I Kravchenko,S My,D Velicanu,J C Sanabria,B Mathias,A Perieanu,V Dutta,J S Werner,T Sakuma,A Gurtu,M Krammer,V Karjavin,A Juodagalvis,T Peiffer,L Basso,F Simonetto,M Seidel,V D Elvira,H Silverwood,G Hall,S Goy Lopez,L Gouskos,P Van Hove,A Kraan,A De Roeck,E Meschi,C Collard,Y Kim,P De Barbaro,A Volodko,A Savin,A Lopez Virto,J Piedra Gomez,S S Chhibra,E Perez,M Yücel,V O’Dell,D Strom,A Vilela Pereira,D Cline,C Brew,G Pugliese,A Kalinowski,M Z Mehta,M J Kortelainen,G Boudoul,H Nogima,E Auffray,M Konecki,V Krychkine,M Goncharov,B Rahbaran,R Hirosky,M Gosselink,D M Raymond,M De Gruttola,W A Khan,B Cox,P Markowitz,M Wang,I Lazzizzera,M Vergili,S Khalil,A Avetisyan,F M Stober,H Perrey,A C Mignerey,J Olsen,L Sgandurra,R Rahmat,B Hooberman,T Dorland,F Palla,H Saka,P Chang,L Benhabib,U Goerlach,T Dorigo,L Barone,Y Ma,C Böser,K Stenson,Y M Tzeng,A Baden,S Gonzi,M Cardaci,H Jung,R Sever,I Vila,M Jarvis,B Hegner,D Winn,J G Shiu,G Kozlov,J Babb,J Thom,J H Kim,D Dammann,G P Van Onsem,M Kirsanov,B Pavlov,H Breuker,I K Furic,R G Kellogg,A Ferapontov,C Fantasia,P Lobelle Pardo,O Bondu,O Pooth,G P Heath,G Majumder,S Ganjour,R Vilar Cortabitarte,S Jindariani,R M Chatterjee,A.-C Le Bihan,O Charaf,D Sunar Cerci,E Halkiadakis,T Pearson,O Kaya,V M Ghete,L Tauscher,T Camporesi,A Brinkerhoff,M Kirakosyan,C West,L Taylor,J Dittmann,R Marco,G Mesyats,A De Benedetti,P Van Mechelen,A 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Beretvas,N Nishu,M Vazquez Acosta,A Tricomi,H Kirschenmann,S Senkin,T Schum,D D’Enterria,S Di Guida,P Baillon,A Benaglia,A Ferrando,V Savrin,B Rutherford,S Banerjee,R Lane,S Simon,A A Ocampo Rios,C Seitz,D R Claes,D Piparo,T Y Kim,B Gomber,N Ratnikova,M Narain,K Lannon,E Migliore,J Rohlf,H Hesari,J Duarte Campderros,T Miceli,T Aziz,A T Meneguzzo,Z Tsamalaidze,R Khurana,A Olbrechts,G Giurgiu,T Rovelli,S Xie,I Asin,P Ronchese,G Brona,J Yelton,C Grab,G Daskalakis,M Sasseville,P Tan,R Granier De Cassagnac,S Kesisoglou,N Pozzobon,M Hildreth,A Y Rodríguez-Marrero,J E Kim,A Garabedian,M Ata,G Mantovani,K Doroba,C Baus,R Remington,M Chiorboli,L Tourtchanovitch,B Snook,K Kousouris,A Elliott-Peisert,V Tcholakov,G M Bilei,E Appelt,M Kasemann,M Hansen,K Harder,H Liu,A Morelos Pineda,I Vorobiev,B Tali,Y Sirois,N Parashar,C Schwick,P Giacomelli,R Hall-Wilton,R Doesburg,C Newman-Holmes,A Zucchetta,A Rosowsky,A Delgado Peris,E Di Marco,M Musich,D A Belknap,A Zanetti,P Symonds,B Radics,J Berger,N Wickramage,M Makouski,J Letts,G Safronov,X Aslanoglou,E A De Wolf,V Klyukhin,F Nowak,M Dünser,G Ryu,D H Kim,D Rabady,R Harr,J Butt,E Tiras,A Mott,P Sphicas,D M Newbold,N Saoulidou,N Amapane,W Ferguson,M Herndon,M Bansal,S Hewamanage,J M Vizan Garcia,F Cavallari,R T D’Agnolo,C Delaere,P Saxena,R P Kenny,V Palichik,R D’Alessandro,U E Surat,K Beernaert,J Goh,A Sparrow,V E Bazterra,H Bahtiyar,T Du Pree,R Venditti,E Calvo,R Bellan,P Nef,Y Fu,G Flouris,N Pacifico,P Meridiani,A Pfeiffer,K Borras,P Vanlaer,R Guida,L Fanò,J Incandela,P Lujan,D Menasce,I J Cabrillo,J Thompson,T Libeiro,I Ross,P Dauncey,V Andreev,S Meola,M S Kim,A Penzo,S Fonseca De Souza,R Moser,A Adair,A Campbell,P Azzurri,M Titov,F Pandolfi,G Abbiendi,E Gallo,J Haller,R Nelson,W Martin,G Bencze,M Wolf,W L Aldá,P Merkel,R Breedon,D Lincoln,S P Ratti,Z Hatherell,C Sander,P Zotto,S V Rusakov,S Choi,G Ball,S Khalatyan,R Rusack,H A Salazar Ibarguen,S Brochet,B Clerbaux,R Kelley,J Alcaraz Maestre,G Selvaggi,M Schröder,A Bodek,J R Vlimant,J Lee,W To,L K Gibbons,M Chan,A M Rossi,D Lazic,C Hackstein,S Beauceron,A Raval,S Linn,S Kunori,G Zumerle,E Vlasov,A Castro,T Tuuva,K Hatakeyama,M Albrow,R Vidal,N Cripps,L Fiore,J Slaunwhite,W Lange,C Neu,D Rathjens,E Paradas,R Montalvo,R Lucas,L Spiegel,G R Snow,A Descroix,M Cerrada,M Menichelli,W Haj Ahmad,D Cussans,P Kyberd,S Beranek,F Ratnikov,D Dobur,A Bhardwaj,D Ralph,S Cihangir,P Janot,A Bethani,P Checchia,G B Cerati,M Murray,A Leonidov,G Masetti,D Noonan,U Langenegger,F Fabbri,A Kalinin,I Svintradze,E Barlas,P Lariccia,J Mans,T Martins,P Bellan,A Lath,N Heracleous,L Perrozzi,M Correa Martins,D Roy,F Fanzago,W Sun,V Gavrilov,P Baringer,L Martini,R Cavanaugh,K Mazumdar,N Hörmann,A Custódio,S Tkaczyk,P Vitulo,M Yang,S Gascon,C H Jiang,A Petrilli,G Bauer,L Rebane,D Wang,J Cuevas,P Lecoq,V Knünz,M Costa,A Skuja,V Khotilovich,G Petrillo,A Romero,A Dermenev,Y Weng,T Hauth,F Drouhin,A H Ball,G S F Stephans,T Reis,M Lebourgeois,M Maggi,I Smirnov,F Ricci-Tam,A Ellithi Kamel,O Militaru,E Conte,T Bergauer,M Finger,S Stoykova,I Papadopoulos,V Blobel,A Guneratne Bryer,T Aliev,A Melo,D Denegri,V Ciulli,H D Yoo,P Silva,J Whitmore,M Azarkin,V Zhukova,F J M Geurts,C Rovelli,J S Wood,A Pozdnyakov,P Otiougova,I Lokhtin,P Zalewski,C Battilana,S S Yu,A Schmidt,K Kanishchev,G Della Ricca,A Kropivnitskaya,D Petyt,C Biino,R Musenich,P Paolucci,S Troshin,N Tambe,M Toms,A Güth,P Mcbride,S W Li,I Macneill,M Ahmad,L Sonnenschein,G Flucke,G Hellwig,A Starodumov,M Kovac,L Pape,B Wittmer,L Soffi,R Redjimi,D J A Cockerill,O Novgorodova,Y Zheng,W Hopkins,A C Benvenuti,K H Chen,F L Navarria,M U Mozer,S Rahatlou,A Santoro,K Goulianos,P Schlein,M Naimuddin,I.-A Melzer-Pellmann,M A Shah,L Foà,A Ruiz-Jimeno,S C Eno,M Chasco,L Teodorescu,M Murumaa,A Tumasyan,M Merola,N Pastrone,W Carvalho,A Cimmino,K Kaadze,G Barbagli,A Staiano,F A Dias,S Shrestha,R Chierici,R Paramatti,J Nachtman,M Kaur,R Fischer,K Sudhakar,A Whitbeck,P Moisenz,F Marinho,P Rumerio,M Planer,E Longo,R Carroll,L M Pant,Y Chen,C Hill,P Van Mulders,M Tytgat,S F Novaes,D Bisello,C Bernet,A Nowack,V Chetluru,C Henderson,A Kyriakis,T S Anjos,D C Miner,H Geenen,A Gude,W Behrenhoff,C Mesropian,J Lellouch,S Buontempo,A V Gritsan,A Messineo,K Burkett,A Lanaro,C Nicolaou,N Cavallo,P Siegrist,B Lee,L Mucibello,Y Kuessel,Y Erdogan,D Krücker,A Sharma,J Anderson,R Lipton,B P Padley,M T Lucchini,M Olschewski,A Malakhov,S Park,D Lopes Pegna,J Martínez-Ortega,P Schleper,T Orimoto,C Dozen,M Wayne,J Olzem,E Stiliaris,G Merino,S Won,R S Höing,C Goetzmann,Y Tu,M De Mattia,R Campanini,Y.-J Lee,V Mossolov,A Kayis Topaksu,B Betchart,I Segoni,N Bartosik,W Kiesenhofer,J Bochenek,J Alimena,S Marcellini,M Galanti,B Kargoll,A Nappi,T Medvedeva,D Hidas,A Geiser,M Chertok,J Thomsen,A Tsirou,S Costa,J Dolen,E Petrakou,C Kottachchi Kankanamge Don,K Lipka,S Rappoccio,J Robles,A Mohammadi,E Avdeeva,G Rakness,L Brigliadori,O Evdokimov,T Cheng,L Benucci,M Misiura,S Sen,C La Licata,J Lingemann,M N Bakirci,S W Lee,P Lawson,A Zarubin,J Caudron,P Petkov,M Donegà,J Bendavid,M Simon,D Bourilkov,I Bucinskaite,H Pieta,I Golutvin,L Guiducci,L Sulak,M Girone,M Stein,H J Simonis,Y Maravin,E Olaiya,M Sigamani,M Mulders,M Kaya,E Locci,Sh Jain,J Salfeld-Nebgen,S K Nam,A Harel,K Sung,E Ron,J Gilmore,S Guragain,J P Fernández Ramos,V Kim,J Härkönen,B Lutz,A Svyatkovskiy,T Hreus,J F De Trocóniz,V Petrov,M R Adams,M Cepeda,F Couderc,J Pálinkás ,Y F Liu,A Godshalk,M M Baarmand,Benjamin Charles Radburn-Smith ,W Bertl,B Roland,N Magini,M Erdmann,S Nourbakhsh,D Vishnevskiy,S Bose,D Duggan,D Gyun,J Hrubec,J Pazzini,D J Karmgard,V Valuev,M Vander Donckt,V Perelygin,X Quan,C Fabjan,A Pin,A Jafari,Y Mao,E Focardi,B Gobbo,V Sordini,A Zabi,M Dalchenko,Y Chào ,C Mariotti,C Asawatangtrakuldee,K Nirunpong,S Özkorucuklu ,B Gomez Moreno,A Gurrola,R Stone,Z Yang ,N Cartiglia,P Gunnellini,Y W Chang,C Ochando,T Chwalek,D Troendle,F Lacroix,C Kleinwort,H Snoek,N Krasnikov,B Parida,R Hughes,M Dragicevic,I Ojalvo,W Treberer-Treberspurg,H Mermerkaya,T J Kim,C Justus,V Candelise,M Ruspa,J Fay,M Feindt,D Futyan,P Robmann,R K Shivpuri,M Weinberg,Eric Wayne Vaandering ,N Pastika,B Bylsma,G Singh,D Stickland,Arun Kumar,Ž Antunović ,S Sanders,C Botta,J Erö,K Höepfner ,A Lanev,M Grünewald ,J P Chou,J A Coughlan,M Ekmedžić ,A Singovsky,M Vidal Marono,R Potenza,M Dobson,D Evans,K A Ulmer,M Nguyen,Fırat Duru ,L Mirabito,D Carlsmith,Y S Gao ,S Das,M Gallinaro,K Mishra,M Tripathi,A Belyaev,J Swanson,D Renker,N Bacchetta,P Marage ,J Temple,M A Reyes-Santos,M Turner,M Balazs,D Montanino,M Aldaya Martin,C Ávila ,S Walsh,A Abdulsalam,Y O Günaydın ,N Godinović ,E Gurpinar,J Wetzel,J Zabel,G Karapinar,T Boccali,M Chamizo Llatas,W Luo,Z Wan,C Palmer,A Gilbert,J Hauser,M Lethuillier,R López-Fernández ,L Muñiz ,A J Bell,A De Cosa,C Roland,A Sanchez ,S Salur,A Montanari,M Snowball,C Heidemann,J Hirschauer,C Favaro,D Sperka,Y Roh,N Eggert,P C Bhat,S Tuo,A Radi,A Anastassov,J Strauss,R Ciesielski,A Saha,A Massironi,D Kçira ,G Mitselmakher,D Domínguez Vázquez,H Reithler,M Guchait,T Dahms,S Khalid,J Hugon,S Greene,L Gray,D Ćutts ,D Martschei,V Genchev,P G Ferreira Parracho,W Clarida,L Forthomme,J Haley,M Deniz,I Osipenkov,T Christiansen,D J Summers ,J R Smith ,M C Fouz,U Behrens,G Vesztergombi,R Erbacher,G Hanson,S R Wagner,H Held,O Prokofyev,S A Koay,E M Da Costa,Martin Weber ,A Thea,A Vartak,M Marone,J Fulcher,O Gutsche,A Florent,A Branca,D Kovalskyi,Michael Henry Schmitt ,D Mason,B Akgün ,A Uzunian,S Başeğmez ,F Gasparini,P Levchenko,U Akgun,Р Тенчини ,W Busza,A Vorobyev,D Toback,D Loukas,D Pellett,K Cankoçak ,M Choi,V Halyo,F I Vardarlı,M Bachtis,M Szleper,J P Gomez,C Tully,S Çerçi ,F Primavera,E Laird,J Lazo-Flores,H Prosper,G P Siroli,G Benelli,A Martelli,W Funk,X Meng,D Wright,M Giunta,S B Beri,G Bagliesi,D Gelé,S Vavilov,W L Aldá,J Chinellato,F Özok ,N Pietsch,D Stuart,N Valls,J Puerta Pelayo,C Maguire,N Leonardo,G Kaußen ,D H Moon,Zero J Kim,C Jorda,M B Tonjes,R Démina ,C M Kuo,M Souza ,A Markina,M Grassi,F Beaudette,J K Behr ,A Khan,C Diez Pardos,J L Rodriguez,L Sala,M Pierini,V Veeraraghavan,V I Martinez Outschoorn,S Wayand,U Gebbert,P Raics,T Ferbel,H Wolfe,M Friedl,D Ferenček ,S D Worm,R Gonzalez Suarez,S Habib,G Sguazzoni,I Villella,B A Barnett,A Marinov,A Rinkevičius ,A C Marini,A Çakır ,E J Tonelli Manganote,R Gupta,P Piroué,M Erofeeva,R Nandi,F Cossutti,J St John,J Jackson,J E Ramirez Vargas,C A Carrillo Montoya,F Yang,S Gollapinni,R Trayanov,C Hartl,В Жуков ,N Mohr,M Paulini,F Moortgat,S Dutta,D Contardo,C A Bernardes,G Sultanov,F J Munoz Sanchez,B Ujvári ,G I Veres,Н Голубев ,J Linacre,C Lazaridis,S Arora,H Kluge,D Benedetti,D Trocino,Y D Oh,J Hauk,J W Gary,Y Assran,D J Kong,D Gigi,P Gras,A Adıgüzel ,G Eckerlin,A Nürnberg,I R Tomalin,Y Hsiung,Edgar Casimiro Linares ,Y Guo,P M Ribeiro Cipriano,M Jones,K Klein,G B Mohanty,C Barth,K Öcalan ,K Gabathuler,A Bocci,S Choudhury,В Сулимов ,P H Butler,S V Gleyzer,A S Yoon,G Smith,J Karancsi,M Pesaresi,G Hamel De Monchenault ,A Moeller,H Stadie,D Blöch ,K Buńkowski ,K Rabbertz,F Matorras,J.-L Agram,Y Ivanov,M Ignatenko,S Panwalkar,V Lemaı̂tre ,S Lowette,R Y Zhu,D Eckstein,J Tuominiemi,Ashok Kumar,F Blekman,V Azzolini,N V Tran,D Del Re,K S Lee,S Paoletti,L Demortier,A Kornmayer,H Xiao,D Majumder,Y Gershtein,R Walsh,W Wu,A Calamba,P Eerola,A Holzner,G N Kim,G Georgiou,A Khukhunaishvili,R Hadjiiska,L Lusito,A Ledovskoy,M Klute,B Klima,J Suarez Gonzalez,J Tao,C Seez,A Panagiotou,H Schettler,G Steinbrück,B Blumenfeld,F Rebassoo,K Matchev,G Cerizza,A Korytov,A K Mohanty,A Fanfani,L A Khein ,M Déjardin ,T Kurča ,E Brownson,Yu‐Wei Chang ,S Girgis,Alberto Sánchez Hernández ,A T Serban,P D Luckey,L Ceard,J Varela,I Volobouev,R P Kenny,A Pashenkov,H Méndez ,T Frueboes,A Deisher,W Erdmann,B Dorney,K Maeshima,M Malberti,J D’Hondt,A Dimitrov,K F Johnson,B L Winer,L Perchalla,K F Chen,F De Guio,H Kim,G Polese,А Спиридонов ,I Evangelou,A Polatöz ,Mara Senghi Soares ,O González López ,J Wagner-Kuhr,N Mccoll,R D Field,S Braibant-Giacomelli,V Veszprémi ,H R Hoorani,M Maes,W Flanagan,L M Lebolo,N Neumeister,S Röcker,Y J Lei,D Lelas,M Shoaib,D J Hofman,B Wysłouch ,S Sarkar,P Adžić ,S Bianco,M Biasini,J Königsberg ,S M Spanier ,L Vanelderen,G Flügge,A Perloff,V Popov,C Riedl,R Eusebi,S Luyckx,J Eugster,L Winstrom,M Takahashi,A Fahim,D Sabes,M Górski,I Chakaberia,Th Müller,M Tadel,C Fanelli,M Voutilainen,R Clare,Adrian P Hunt ,T Lindén,S Sumowidagdo,S A Tupputi ,T Lampén,S Viret,E Tuovinen,J Duarte,F Glege,R Rougny,S Morovic,M Müntel,M Mooney,J Milošević ,E Torassa,R Pleština ,K Dilsiz,J Yoo,G Karapostoli,N Van Remortel,M Hohlmann,E Schlieckau,C Park,B Fabbro,O Buchmüller ,J J Brooke,Hans-Christian Kaestli ,M Rovere,M Anderson,F Pauß ,C Vander Velde,W Van Doninck,H A Weber,K Piotrzkowski,J Królikowski ,M Zakaria,C Wissing,F Hartmann,M I Josa,C Laganá ,N Almeida,E Contreras-Campana,N Strobbe,G Roland,S Wasserbaech,P Lenzi,G Mazza,C Foudas,V Stolin,L Perera,L Antonelli,M Grothe,N Dhingra,S De Visscher,P Maksimović ,P Lecomte,А Виноградов ,T R Fernandez Perez Tomei,G Franzoni,C Dietz,M Velasco,W Adam,C E Gerber,L Litov,B Ille,H El Mamouni,D Krofcheck,D Matos Figueiredo,J Hollar,Y Yilmaz,J Callner,J Goodell,G Nicolas Kaufman,Riccardo Andrea Manzoni ,P G Mercadante,I Dumanoğlu ,K Gill,M M Obertino,J Malclès ,G Iaselli,A Rýd ,V Oreshkin,M Pioppí ,J Luetic,M Niegel,K Krajczár ,M Hollingsworth,S Belforte,M Rodenburg,S H Chuang,R Cousins,M Chen,V Hagopian,S Dildick,R Rossin,E Friis,C Markou,S Wakefield,S Tosi,S Mueller,S Schael,P Milenović ,A Apresyan,V J Smith,S Metson,J Hammer,A Tropiano,J Wood,I Heredia-De La Cruz,M A Buchmann,C.-E Wulz,M Zieliński ,D Barney,P Bunin,I Bayshev,A Safonov,S Stoynev,L Felď ,J Han,V Innocente,I P J Shipsey ,G Williams,V Chiochia,S Czellár ,S Sharma,Q Li,S Tavernier,Z Szillási ,A Pompili,A Bhatti,J Keaveney,F Thyssen,S Reucroft,P Miné,C De Oliveira Martins,G Schott,Q Ingram,Kristan Allan Hahn ,S Bitioukov,D A Sanders,I Redondo,W H Smith,G Organtini,N Beaupère ,D Giordano,S Mrenna,C Jessop,J Merz,M Besançon ,H Brun,A García-Bellido ,F Nessi‐Tedaldi ,J Andreä ,K Ozdemir,J Zhang,L Quertenmont,A Mestvirishvili,R Conway,E Eşkut ,P Lamichhane,M Arneodo,N Varelas,P Kurt,J Leonard,R R Betts,R Houtz,T Weiler,D Berry,P Govoni,G Bolla,J Liao,Y Musienko,M Peruzzi,N J Hadley,C Grandi,G Gökbulut ,F Würthwein,R Kinnunen,F Margaroli,R Salerno,I Grigelionis,C Urscheler,P R Hobson,S M Etesami,C Tuvé ,M Verzetti,S C Kao,C Schäfer,A Giammanco,E Karavakis,M I Asghar,H B Newman,Y J Lu,W.-S Hou,F Golf,O Oberst,R Yohay,P Vischia,K Kotov,S Cittolin,A Gaz,M Mannelli,J B Singh,N Odell,M Segala,J Molnár ,E Alagöz ,V Khachatryan,D Favart,J Mccartin,H Oğul ,D Piccolo,D Teyssier,R Frazier,R Schmidt,K Romanowska-Rybinska,I González Caballero ,M Ivova Rikova,C Autermann,V Krutelyov,B Kilminster,A York,Y Yang,O Kodolova,D Klingebiel,R Wilken,G Quast,I Hoş ,J E Cole,D Krpic,Wolfram Dietrich Zeuner ,T Adams,A Rose,P Juillot,P E Karchin,A Yagil,G Lungu,E De La Cruz-Burelo,J Ott,B Kim,S J Qian,L Silvestris,Eric Christian Chabert ,P Busson,C Nägeli,C Charlot,M Abbrescia,M Vutova,S I Cooper,V Konoplyanikov,A Korpela,P Geffert,P Eller,V Gaultney,Y Ban,S Carrillo Moreno,D Creanza,B Casal,N Colino,M Bluj,N Sen,T Maënpaä ,J Freeman,G H Hammad,M Gabusi,C Veelken,F Costanza,J Velkovska,K Deiters,N Tosi,G M Dallavalle,H Białkowska ,R Castello,M Zanetti,S Nahn,S Boutle,R Lander,H Bakhshiansohi,M Geisler,A Dominguez,P Turner,Z L Trócsányi ,N Béni ,H K Wöhri,S Lynch,H Arfaei,L Thomas,T Virdee,C George,J Marco,C Lin,M Merschmeyer,M Calderón De La Barca Sánchez ,P A Razis,B Francis,R Schöfbeck,D Duchardt,C Dragoiu,L Zhang,S Albergo,R Magaña Villalba,R Carlin,S Ochesanu,M Chadwick,T Lomtadze,M Zeise,M Yalvac,E Clément ,K Bloom,T Schöerner-Sadenius ,M Dubinin,F Yumiceva,I Glushkov,E Kuznetsova,S Dugad,M Edelhoff,M Gardner,T Bose,A Chatterjee,M Rodozov,M Cuffiani,S C Tonwar,N Mirman,A P R Gay,C Fernandez Bedoya,A Calderón ,B Millán Mejías ,C Willmott,A Özpineci ,D Baumgartel,T Yetkin,L Wendland,J Turkewitz,E Tuominen,M Mittal,E Barberis,M Serin,E E Kangal,J Richman,P Everaerts,K Klapoetke,Z Demiragli,B Kreis,S Mersi,M Mohammadi Najafabadi,P Sorokin,E Ntomari,L Lloret Iglesias,M Ćwiok ,M Fernández ,C Jarvis,I V Akin,A López ,D Bortoletto,F Odorici,A Sakharov,V Smirnov,B C Choudhary,G Martı́nez ,A Snigirev,K Rose,H Nguyen,N Akchurin,D Jang ,P Fabbricatore,R Patel,M Khakzad,S Paramesvaran,Sandra S Padula,A Ostapchuk,V Reković ,M Zeyrek,D Pitzl,M Marienfeld,В Качанов ,V Sharma,T Kamon,R Sacchi,J Lange,L Bianchini,E Palencia Cortezón ,D Bonacorsi,C R Newsom,F P Schilling ,K M Ecklund,J A Brochero Cifuentes,J Kolb,P Traczyk,P Hidas,G Anagnostou,H Seo,J Chasserat,K M Chan,M E Dinardo,A Hervé,S Perriès ,J Ellison,M Correa Martins,J Sturdy,O Hindrichs,V Epshteyn,Y Onel,F Vazquez Valencia,V Sola,N Skhirtladze,J G Branson,C Martínez Rivero ,S Kailas,J R Patterson,A Van Spilbeeck,A Léonard,I Mikulec,P Avery,R Stringer,A Kharchilava,L Lyons,S Lee,D C Son,C Albajar,C Oʼbrien ,T 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Lentdecker,C Lourenço,L Malgeri,P Garcı́a-Abia ,S Bhattacharya,J Hegeman,D De Jesus Damião ,J Roe,S Harper,D Pedrini,B Pollack,A Potenza,A Levin,G Mäggi ,R M Harris,C Ferro,C Mironov,A Tatarinov,W Waltenberger,M Squires,K Nawrocki,I A Cali,C Riccardi,A Kopecký ,U Nauenberg,G Christopher,M Guthoff,A M Sirunyan,R Ulrich,S Kwan,A Rácz ,P T Cox,D Hits,K Kadija,G Önengüt ,R.-S Lu,P Sheldon,K Sumorok,M Aguilar-Benı́tez ,P Kalavase,P Martínez Ruiz Del Arbol ,S Blyweert,S Liang,B Calpas,S C Zenz,S Casasso,T Caebergs,M Xu,V Murzin,F Santanastasio,L Borrello,A.s Proskuryakov ,V Adler,A Graziano,S Đurić ,S Naumann-Emme,S König,G Davies,P Bartalini,J Santaolalla,J Mnich,I Krätschmer,R Bainbridge,K Theofilatos,F Micheli,C Farrell,G Dissertori,R Ryutin,W Johns,V Golovtsov,J.-M Brom,H Castilla‐Valdez ,N Mucia,N Sönmez ,Y Eshaq,S Ragazzi,H Park,L Barbone,J Fernández Menéndez ,R Castaldi,L K Saini,R Wolf,C Hajdú ,M Heinrich,M Spiropulu,A Burgmeier,J A Gómez ,P Kreuzer,M Stoye,J Mousa,L Scodellaro,V Brigljević ,M Giffels,F Meijers,G Gómez ,L Orsini,J Berryhill,S Gowdy,M Gulmini,D M Morse,H Sakulin,J Klukas,M Luk,P Depasse,P Klabbers,L Apanasevich,S Baffioni,Ivo Nicolas Naranjo ,T Khurshid,P Katsas,G Hu,D Colling,D Kotliński ,G Rolandi,R Dell’Orso,W T Ford,E Dietz-Laursonn,A Toropin,E M Gregores,O Mall,G Mavromanolakis,M Meschini,A David,H Gamsizkan,B Bilki,T Ferguson,S Folgueras,M Gouzevitch,G A Pierro,L Bäni,M Haguenauer,A Dabrowski,J Damgov,F Fabozzi,M Eads,M Sharma,J Sánchez ,W Li,A Colaleo,K Chatterjee,L S Durkin,T Whyntie,D Green,T Hebbeker,T Scarborough,S Obraztsov,T Tabarelli De Fatis,A Santocchia,G Bianchi,S Piperov,B Safarzadeh,M Malek,W Andrews,M Della Negra,F Gonella,M Casarsa,A Perrotta,F Siklér ,C Nuttens,A Modak,C Vuosalo,A Zhokin,C Jeong,B Hong,A Zuranski,W Zou,A Ivanov,D Dutta,R Wilkinson,R Travaglini,S Ozturk,Karl-Heinz Hoffmann ,T Rodrigo,M Bergholz,R Volpe,S Bolognesi,A Kubik,L Cremaldi ,H Topakli,G Iles,P Squillacioti,W L Prado Da Silva,W D Teo,J Y Kim,K Heine,N Dupont-Sagorin,L Moroni,J Hays,F Bachmair,G Kukartsev,S Malhotra,J Rander

doi:10.1007/jhep10(2013)062

Abstract

Abstract The first measurement of the electroweak production cross section of a Z boson with two jets (Zjj) in pp collisions at $ \sqrt{s}=7 $ TeV is presented, based on a data sample recorded by the CMS experiment at the LHC with an integrated luminosity of 5 fb−1. The cross section is measured for the ℓℓjj (ℓ = e, μ) final state in the kinematic region m ℓℓ > 50 GeV, m jj > 120 GeV, transverse momenta $ p_{\mathrm{T}}^{\mathrm{j}}>25 $ GeV and pseudorapidity |η j| < 4.0. The measurement, combining the muon and electron channels, yields σ = 154 ± 24 (stat.) ± 46 (exp. syst.) ± 27 (th. syst.) ± 3 (lum.) fb, in agreement with the theoretical cross section. The hadronic activity, in the rapidity interval between the jets, is also measured. These results establish an important foundation for the more general study of vector boson fusion processes, of relevance for Higgs boson searches and for measurements of electroweak gauge couplings and vector boson scattering.

Highlights

BackgroundGraph via a matrix element (ME) calculation that includes up to four jets at parton level
Z+jets and ditop processes are generated with Mad-Graph via a matrix element (ME) calculation that includes up to four jets at parton level.The ME and parton shower (ME-parton showering (PS)) matching is performed following the ktMLM prescription [26]
The plan of the paper is as follows: in section 2 we describe the Compact Muon Solenoid (CMS) detector, reconstruction, and event simulation; in section 3 we discuss the event selections; sections 4 and 5 are devoted to the study of the hadronic activity in Drell-Yan events; in section 6 we present the measurement of the cross section for the EW Zjj production; in section 7 we summarize our main results

Summary

Background

Graph via a matrix element (ME) calculation that includes up to four jets at parton level. PiT with n final state particles (partons, not jets; n = 4, 5) is used with the QCD factorization and renormalization scales set equal, μF = μR = μ0. Generated events are processed through the full CMS detector simulation based on. The calculation is carried out with the vbfnlo program [33] with the factorization and renormalization scales set to μR = μF = 90 GeV and with CT10 parton distribution functions [34]. The kinematic distributions for the signal generated by vbfnlo at leading order agree with those produced by the MadGraph generator. The interference effects between EW and DY jj production processes are evaluated with the MadGraph, sherpa [35], CompHEP [36], and vbfnlo programs by the authors of these programs and were found to be negligible

Event selection

40 JE5S0 U6p0 70 80 100

Hadronic activity in the rapidity interval between tagging jets

20 JES3U0p 40 50 60 70

Central hadronic activity measurement using jets

Central hadronic activity measurement with track jets

Signal extraction using the dijet mass fit

Systematic uncertainties

Background modeling

Results

Summary

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Journal: Journal of High Energy Physics	Publication Date: Oct 1, 2013
Citations: 29	License type: CC BY 2.0

R Discovery Prime

R Discovery Prime

Measurement of the hadronic activity in events with a Z and two jets and extraction of the cross section for the electroweak production of a Z with two jets in pp collisions at $ \sqrt{s}=7 $ TeV

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Measurement of the hadronic activity in events with a Z and two jets and extraction of the cross section for the electroweak production of a Z with two jets in pp collisions at $ \sqrt{s}=7 $ TeV

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Summary

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