Observation of nuclear modifications in W± boson production in pPb collisions at [formula omitted

A M Sirunyan ,J Yoo,A Dierlamm,M Zeinali,M Walker,E Eskandari Tadavani,P Lecoq,P Barria,C Leloup,D Dutta,A Khan,R Yohay,C Foudas,M Rahmani,B Blumenfeld,W Funk,C Biino,J Chinellato,S Wertz,S Nuzzo,J Wetzel,G Correia Silva,R Ulrich,P Van Hove,Z Tu,A Lath,A Ershov,V Monaco,J Salfeld-Nebgen,M Mannelli,M Pieters,T Mengke,S Durgut,K Kaadze,D Mason,Y Kubota,C Freer,A Givernaud,S Buontempo,R Bhandari,J Kamin,A Rane,G Bencze,M Verzocchi,P Gunnellini,S Simon,P Eerola,R Ryutin,S Tuo,L Uplegger,E Ayala,T Dreyer,R Erbacher,G Zevi Della Porta,T Mulholland,H Brun,M Galanti,S Boren,D Lontkovskyi,A Benecke,V Botta,N Tyurin,S Chenarani,A Rose,S Kaplan,A Schmidt,M Haranko,T Virdee,B Tali,C Seitz,A Venturi,F Ferri,A De Cosa,S Hagopian,M Savitskyi,E Tiras,S Bhattacharya,T Liu,P Mcbride,U Sarica,D Loukas,M Xiao,J Nachtman,L Mastrolorenzo,F Ricci-Tam,S Lo Meo,S Kunori,A Zabi,T James,C Roland,A Kamenev,R Caspart,A Carvalho Antunes De Oliveira,P Checchia,D Gulhan,K Wichmann,R Campanini,T Aushev,D Konstantinov,L Brianza,S Petrushanko,S Baur,Z Wu,A Bat,J Lauwers,O Kodolova,C Diez Pardos,A Stepennov,A Vorobyev,C Bernet,R Carlin,S Baidali,R Schöfbeck,P Moisenz,C Fangmeier,Z Xu,P David,G Majumder,K Hurtado Anampa,M Biasini,D Piccolo,N Voytishin,C Wöhrmann,I Dremin,S Maselli,C Smith,I Bayshev,S Di Guida,R Stone,H Prosper,L Russo,G Masetti,J Rembser,S Sarkar,A Massironi,I De Bruyn,E Fontanesi,M Pieri,P Meridiani,I Papadopoulos,T Orimoto,T Dorigo,A Boletti,N Pastika,P Klabbers,V Kumar,E Brondolin,N Krasnikov,M Rovere,M Titov,V Gavrilov,E Popova,D Ruini,G Saha,W Si,D Tsitsonis,E Yazgan,A Korytov,P Wittich,J Dolen,C Vander Velde,D Vadruccio,A Solano,M Dünser,P Faccioli,P Das,S Muthumuni,V Kutzner,J Martin Blanco,A Malakhov,M Arneodo,J Tuominiemi,M Flechl,R Harr,G Pugliese,R Vilar Cortabitarte,M Stoye,A Levin,D Soldi,X Wang,M Zientek,A Montanari,S Ahuja,B Stieger,A Baden,J.-C Fontaine,M Zarucki,Sandra S Padula,A Titterton,N Mirman,S Shmatov,M Rodozov,W Carvalho,M Lethuillier,K Beernaert,J Goh,I Suarez,G Karapostoli,E Macdonald,F Rezaei Hosseinabadi,M Shi,A Pozdnyakov,G Zumerle,A Fanfani,V Daponte,Y.F Liu,P Paolucci,S Bansal,F Iemmi,K Matchev,D Fehling,C Schwanenberger,M Delcourt,R Khurana,S.W Lee,M Naseri,M Swartz,C Calabria,J Ngadiuba,R Horisberger,A Mehta,A Bhardwaj,J Mans,N Marinelli,C Tully,G Tonelli,V Candelise,T Chwalek,A Dasgupta,K Pedro,G Anagnostou,S Zhang,D Sunar Cerci,A Saggio,G Mantovani,C Prieels,D Krücker,A Marinov,J De Clercq,A Álvarez Fernández,N Dev,I Shvetsov,E Belchior Batista Das Chagas,A Vilela Pereira,J Tao,G Paspalaki,K Tos,K Padeken,A David,A Canepa,R Hadjiiska,P Rebello Teles,C Kar,O Behnke,P Dauncey,E Gottschalk,J Li,P.H Chen,A Stakia,R Del Burgo,K Nam,L Romero,E Carrera Jarrin,D Di Croce,P Piroué,V Ciriolo,J Pata,D Bertsche,G Kasieczka,M Guthoff,A Abdulsalam,E Di Marco,J Suarez Gonzalez,F Santanastasio,T Weiler,Y Iiyama,M Missiroli,C Scharf,P Gras,G Funk,F Yumiceva,S Williamson,B Dorney,M Hohlmann,C Brainerd,R Frühwirth,C Neu,A Belloni,A Tumasyan,I Vai,H Van Haevermaet,F Errico,E Paganis,B Cox,G Barbagli,D Bonacorsi,D Wood,S Tavernier,S Vavilov,A Escalante Del Valle,R Wilkinson,M Niedziela,G Daskalakis,A Di Florio,M Ahmad,Y Komurcu,A Triossi,I Volobouev,S Grünendahl,R Bellan,K Mei,V Hagopian,M Klute,J Berryhill,S Banerjee,G Cucciati,A Meyer,F Fiori,A Di Francesco,S Turkcapar,M Maity,J Sturdy,L Spiegel,K Sandeep,M Verweij,N Pastrone,V Ciulli,S Chatterjee,E Usai,A Bornheim,F Gasparini,M Raidal,D Carlsmith,O Zenaiev,A Belyaev,S Nahn,C Schomakers,R Kogler,S Higginbotham,H Zhang,T Hreus,M Cepeda,A Florent,D Burns,C Cecchi,P Raics,D Pitzl,N Strobbe,M Grothe,A Makovec,N Wickramage,A Evans,J Hauser,D Pellett,D Lelas,F Meijers,J Mousa,Ravindra Kumar Verma,A Castaneda Hernandez,J Fulcher,L Moroni,R Teixeira De Lima,S Stoynev,L Kreczko,L Li,T Kamon,A Kornmayer,A Baskakov,F Pantaleo,M Cuffiani,H Wei,J Mejia Guisao,S Wasserbaech,K Ozdemir,G Gomez Ceballos,R Sharma,E Voevodina,R Redjimi,J.-P Merlo,N Amapane,R Radogna,A Mohammadi,Y Ivanov,D Matos Figueiredo,A Ahmad,J Incandela,S Kurz,O Hlushchenko,R Cousins,I Zoi,L Thomas,S Wang,M Gola,E Wolfe,M Vander Donckt,N Krammer,P Thomassen,F Ball,J Lee,P De Castro Manzano,R Salerno,D Cieri,B Clerbaux,M Marionneau,U Husemann,I Ojalvo,M Kovac,F Brivio,D Nowatschin,P Kontaxakis,A Sobol,L Gray,W Van Doninck,C Roskas,M Preuten,G Latino,A Thea,H Li,Z Zhang,R Xiao,P Bloch,P Baillon,B Francois,P Avery,F Würthwein,K Shi,T Bergauer,S Sanders,K Gill,A Güth,G Bagliesi,L Finco,C Asawatangtrakuldee,J Marco,M Maggi,K Lipka,G Codispoti,G Miniello,C Veelken,C Brew,M Akbiyik,D Klein,H Keller,P Mandrik,P Montagna,L Gouskos,N Colino,Q Ingram,O Gutsche,M Voutilainen,G.M Chen,V Myronenko,A Di Mattia,E Kennedy,R Mankel,A Nehrkorn,P Katsoulis,S My,P Kyberd,S Afanasiev,R Mueller,F Colombo,S Slabospitskii,A Da Rold,J Gilmore,M Joyce,A Delgado Peris,C Uribe Estrada,A Askew,M Cremonesi,Yu Andreev,I Krätschmer,A Gozzelino,E Longo,M Chertok,K Sumorok,A De Wit,L Borrello,F Beaudette,V Re,V Petrov,M Szleper,C Flores,I Vila,C Fernandez Bedoya,C Henderson,C Mills,A Di Crescenzo,B Bilki,U Langenegger,R Bhattacharya,U Gasparini,K Jung,H Nogima,A Holzner,R Breedon,B Francis,J Almond,D Lincoln,A Castro,K Piotrzkowski,A Ellithi Kamel,B Mcmaster,C Paus,S Choi,F Lagarde,N Eminizer,G.N Kim,H Malbouisson,R Ruchti,J Bowen,M Dobson,O Kaya,N Van Remortel,D Gyun,A Ghezzi,F Chlebana,D Gelé,M Ressegotti,R Kamalieddin,I Van Parijs,A Geiser,G Fedi,R Heller,A Albert,M Hildreth,M Costa,S Sharma,M Kaur,G Mavromanolakis,S Ganjour,A Ledovskoy,P Zalewski,S Mukherjee,K Burkett,B Mesic,Arun Kumar,H Sert,Y Onel,M Jones,C Nicolaou,S Tosi,L Sulak,L Teodorescu,N Skatchkov,A Saddique,R Wallny,A Rizzi,Y Go,S Carrillo Moreno,S Sagir,J Knolle,A Perieanu,G Sultanov,K Burt,M Franco Sevilla,K Kadija,H Stadie,R Aggleton,J Thom,C Mora Herrera,W Lohmann,A Attikis,S Gennai,J Chaves,T Ruggles,R Gonzalez Suarez,M Toms,M Kaya,S Malik,O Toldaiev,J Alcaraz Maestre,K Harder,E De La Cruz-Burelo,M Menichelli,K Lee,M Margoni,A Zarubin,C Galloni,T Mudholkar,D Teyssier,P Baringer,A Zhokin,M Della Negra,J Alexander,S Choudhury,M Ince,V Karimäki,G Ramirez-Sanchez,C Palmer,S Luo,T Tabarelli De Fatis,D Denegri,A Braghieri,N Loukas,S Tkaczyk,S Kaur,R Granier De Cassagnac,A Reimers,A Byszuk,J Hollar,R Reyes-Almanza,B Penning,M Hadley,A Rosowsky,A Ranieri,A Barker,D Elumakhov,A Martelli,H El Mamouni,E Gurpinar,S Gelli,L Giannini,B Gomber,G Bruno,M Bluj,C Riccardi,A Pérez-Calero Yzquierdo,Z Zolkapli,A Steen,M Malberti,Y.-J Lee,S Mitra,P Musella,Y Choi,N Sahoo,M Barrio Luna,D Salerno,H Wang,T Cheng,R Montalvo,J Leonard,A Khukhunaishvili,S Bitioukov,C Hwang,L Perrozzi,M Quittnat,T.W Wang,Z Lesko,C Beirão Da Cruz E Silva,C Wissing,R Kunnawalkam Elayavalli,C Ferraioli,M Krammer,M Kasemann,C Oropeza Barrera,M Naimuddin,J Flix,M Dittmar,T Rohe,Z Tsamalaidze,D Stuart,M Spiropulu,D Abercrombie,D Olivito,W.L Prado Da Silva,A Morelos Pineda,M Abbrescia,R Rossin,S Nandan,S Ha,M Misiura,T Cornelis,S Freed,C Autermann,J Linacre,M 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Lelek,N Zaganidis,M Herndon,A Rossi,K Call,S Gadrat,D Stolp,S Fonseca De Souza,J Duarte Campderros,M Weinberg,G Abbiendi,P De Barbaro,M Melo De Almeida,S Folgueras,P Pigard,A Bodek,A Vartak,F Fabbri,Y Sirois,K Theofilatos,C Maguire,I Evangelou,Z Wang,K Mandal,M Meschini,G Riley,T Madlener,E Starling,C Richardson,T Kolberg,X Niu,M Rieger,J Schieck,N Wardle,N Demaria,A Pfeiffer,H Bakhshiansohi,M Komm,G Della Ricca,J Wang,N De Filippis,W Ji,K Nash,A Santocchia,T Wamorkar,A Lopez Virto,J Luo,H Mei,J Buchanan,A Vagnerini,I Gorbunov,W Johns,V Khristenko,M Vidal Marono,S Belforte,Th Müller,S Dildick,C Dorfer,M De Mattia,A Barnyakov,D Curry,D Sperka,S Summers,K Lamichhane,N Chanon,G Hanson,E Olaiya,D Berry,C Seez,Y Cheng,A Bundock,M Tosi,L Malgeri,B Pavlov,F Rebassoo,K Mondal,W Verbeke,G Dissertori,S Goy Lopez,S Spanier,A Gurrola,E Coelho,D Barney,C Fallon,M Carver,I Heredia-De La Cruz,D Kovalskyi,D Cussans,J Puerta Pelayo,M Aldaya Martin,H Siikonen,M Finger,J Pazzini,F Vazzoler,L Fanò,E Robutti,P Van Mulders,Sa Jain,G Auzinger,E Bouvier,K Long,S Malvezzi,I Yu,B De La Cruz,C Collard,Y Skovpen,J Garcia-Ferrero,S Bheesette,J Monroy,G Singh,E Halkiadakis,I Azhgirey,A Spiezia,G Safronov,P Everaerts,P Van Mechelen,G Bauer,G Franzoni,C Amendola,D Taylor,R Clare,U Behrens,E Meschi,T Williams,A Stahl,V Hegde,Y Roh,A Kayis Topaksu,A Agapitos,I Pedraza,I Kucher,E Tziaferi,S Abu Zeid,G Apollinari,M.S Kim,E Kuznetsova,B Kilminster,R Lipton,G Krintiras,A Romero,K.S Lee,K Androsov,A Jafari,S Bhowmik,C Mariotti,E Gallo,P Major,P Petkov,D Poyraz,A Dimitrov,M Gavrilenko,L Mirabito,J.S.H Lee,S Polikarpov,M Gouzevitch,K Hatakeyama,R Cavanaugh,C Contreras-Campana,S Nourbakhsh,A Messineo,S Colafranceschi,R Bi,D Zuolo,A Yagil,V Blobel,I Kravchenko,S Kalafut,S Gascon,O Kara,A Campbell,S Paoletti,W De Boer,F Mohamad Idris,D Wang,M De Palma,W Clarida,D Jeon,C Florez,Ashok Kumar,J Wright,V Kim,P Thapa,P Schleper,D Devetak,K Lannon,S Brandt,V Popov,M Hu,C Barth,R Sacchi,E Eren,A Pyskir,A Penzo,J Borg,P Mal,V Okhotnikov,C Rovelli,A Bermúdez Martínez,L Moreels,D Stickland,B Wang,C De Oliveira Martins,J Schulz,B Chazin Quero,R Wolf,D Quach,J Goldstein,C Caillol,J Cuevas,D Contardo,P Ma,K Vellidis,T Hebbeker,A Tricomi,M Verzetti,C E Gerber ,P Zotto,S Taroni,E Focardi,J Sun,V Palladino,F Couderc,J M Seixas ,S Lezki,M Citron,François Arleo ,J Hrubec,I Vardanyan,V Sola,Reddy Pratap Gandrajula ,S M Tan ,M Misheva,D Doḿınguez Damiani ,S Malhotra,E Laird,V J Smith ,Mythra Varun Nemallapudi ,Yi Yang ,N Srimanobhas,M Déjardin ,H Kirschenmann,A Tapper,A Benaglia,D Horváth ,M Olmedo Negrete,K Uchida,K Mcdermott,F Kassel,S Beauceron,J L Dulemba ,N Smith,J Pekkanen,F Cavallari,M A B Md Ali ,J Königsberg ,J Havukainen,R Paramatti,Z Hu,K Lassila-Perini,S M Etesami ,G Vesztergombi,J A Coughlan ,B Ujvári ,O Bouhali,T R Fernandez Perez Tomei ,B Singh,N Filipović ,M Erdmann,S Sen,F Cenna,S Argirò ,P E Karchin ,M E Pol ,P Bunin,I Papakrivopoulos,L Benussi,S Ozturk,D Marlow,G Martı́nez ,C K Mackay ,T Tuuva,L Cadamuro,G Karathanasis,M Shoaib,O R Long ,N Suwonjandee,R Gerosa,V Bhopatkar,C Snyder,S B Oh ,T Pook,R Covarelli,Z Gecse,A Panagiotou,W Lange,M U Mozer ,Y Maravin,L Benato,C Albajar,A Taurok,A Karneyeu,K Cankoçak ,A A Bin Anuar ,A Godshalk,H Delannoy,C Tuvé ,S K Pflitsch ,F Siklér ,R Di Maria,B Akgün ,D Ferenček ,S Đurić ,M A Ciocci ,Alberto Sánchez Hernández ,C Lourenço,S Tekten,E Asilar,G Sieber,M Sani,M Meyer,M Oglakci,C Caputo,Y Wang,S Cittolin,W Luo,S Cooperstein,O Turkot,W H Smith ,G Walia,C Mironov,A Zghiche,A Toropin,V Krutelyov,A Künsken,Z Szillási ,P Vanlaer,L Barone,J Taylor,J M Hogan ,A Volkov,A Morton,S Schumann,S Breeze,A Uzunian,H Białkowska ,I S Zorbakir ,O Charaf,U K Yang ,Maria Florencia Canelli ,T Aziz,D Spitzbart,D.H Kim,M T Lucchini ,G G Da Silveira ,B Kreis,S Bahinipati,M Schmitt ,I Mikulec,S Mersi,M Grünewald ,P Spagnolo,H.S Chen,L Scodellaro,A Beschi,B Freund,K Deroover,J Malclès ,T A Gómez Espinosa ,M Bartók,H Ni,C Amsler,A Babaev,L Perniè,P D Luckey ,C West,D Rankin,B C Choudhary ,Z Shi ,J Hakala,Piero Giorgio Verdini ,S Keshri,V D Elvira ,D Creanza,J Varela,S Viret,H Rohringer,A Gilbert,M Besançon ,G Pásżtor ,D Pedrini,J D’hondt ,D Bhowmik,L Orsini,V Epshteyn,L Lyons,T Klijnsma,L K Saini ,D Vannerom,P Robmann,E Butz,R Y Zhu ,A Nowack,O Evdokimov,H Oğul ,Karl Matthew Ecklund ,D Kotliński ,M L Vesterbacka Olsson ,B Mahakud,F Blekman,N Mucia,C Mueller,M Dragicevic,N Dhingra,C S Moon ,J Hardenbrook,A Purohit,V Karjavine,N Sur,A Zucchetta,K.F Chen,J.H Kim,N Saoulidou,G M Innocenti ,G M Dallavalle ,F Ferro,V Azzolini,J.-L Agram,P Tan,J G Bian ,R B Garg ,P Siddireddy,T Ferbel,H A Salazar Ibarguen ,B Schneider,G B Yu ,A Carnes,D H Moon ,T Sarkar,J A Murillo Quijada ,A Khatiwada,B Vormwald,Y T Duh ,J B Singh ,A Kropivnitskaya,A Calderón ,S Perriès ,S Abdullin,Y Musienko,D Winterbottom,M Merschmeyer,C Ávila ,P Lujan,T Adams,H W K Cheung ,J Rohlf,N Odell,L Fiore,J G Branson ,C Peña ,G Selvaggi,W A Khan ,A Staiano,K Wong,C Grandi,D R Mendis ,O Baron,G Iaselli,S Shulha,H Jung,Y Güler ,M K Kiesel ,S H Seo ,A Colaleo,C H Jiang ,D Krofcheck,S Karmakar,J R Gonźalez Ferńandez ,M A Harrendorf ,E Locci,N Skhirtladze,J Castle,R M Harris ,W A T Wan Abdullah ,S I Pak ,Edmilson José Tonelli Manganote ,G Y Jeng ,A Lanaro,S Narayanan,A Moeller,J Nash,P Paganini,A.-C Le Bihan,S Zahid,A.-M Magnan,V Smirnov,C Charlot,J Molnár ,K Kousouris,S P Ratti ,S Xie,A Hortiangtham,M T Meinhard ,A Dominguez,P Connor,G Fasanella,A Beretvas,I Antropov,I González Caballero ,R Bartek,A Kharchilava,S Damarseckin,L S Durkin ,F Primavera,M Wang,D Gilbert,R G Kellogg ,S I Cooper ,D Duchardt,P Lenzi,M A Bhat ,A Cabrera,N Bacchetta,H Lattaud,R Janjam,M Olszewski,Р Тенчини ,В Качанов ,C Kleinwort,В Сулимов ,M Kröhn ,H Qiu,I Golutvin,S Bianco,P R Dudero ,P Maksimović ,B Bylsma,T Reis,B Wittmer,D Green,A Apresyan,R M Chatterjee ,P Gianneios,A Datta,R Conway,D Hits,Ž Antunović ,L Wang,S Cometti,R Fischer,G Mittag,J Velkovska,A Harb,L Beck,W T Ford ,J Roskes,S Rahatlou,N Amin,G Önengüt ,A Johnson,D Rabady,M M Baarmand ,C Rogan,H Weber ,F Hartmann,J Freeman,K Schweiger,D Hsu,B M Joshi ,J D Tapia ∋Takaki ,M A Wadud ,S Lee,A C Mignerey ,L J Sanchez Rosas ,Yuan Li ,P Depasse,A Shtipliyski,T Rovelli,L Cristella,S Zaleski,А Александров ,F Ambrogi,M Calderón De La Barca Sánchez ,S Kesisoglou,S Dutta,F J M Geurts ,A Savin,D M Morse ,I Ahmed,P Merkel,G Smith,T Sakuma,G Strong,P Salvini,M Correa Martins ,A Mestvirishvili,D Marconi,A C Benvenuti ,D Dobur,M Stöver,R Venditti,B Safarzadeh,P Vitulo,O Buchmüller ,Kristan Allan Hahn ,A Apyan,M Ignatenko,D Trocino,G R Snow ,Andy Parker ,Claudia-Elisabeth Wulz ,N Lychkovskaya,M Bharti,K Chatterjee,F Golf,S Kudella,R Goldouzian,C F Gonźalez Herńandez ,S Regnard,S A Wiederkehr ,K F Johnson ,C Işik ,D Petyt,G P Heath ,J.-M Brom,J W Gary ,U Kiminsu,I R Tomalin ,M Dall’osso ,S.K Park,E Gülmez,A Khvedelidze,X Coubez,P Azzi,J Y Zhao ,U Goerlach,Irving Daniel Sandoval Gonzalez ,C Dozen,Peter Hansen ,E Vlasov,S M Heindl ,M Khakzad,M Schröder,В Жуков ,Tao Huang ,P Lariccia,L Viliani,S Troshin,M Planer,M Narain,T Frueboes,S Paramesvaran,C A Carrillo Montoya ,M Teroerde,Jay Mathew Lawhorn ,L Lista,D Ciangottini,H Liao,A Pompili,B Courbon,P Berger,P Ronchese,J Piedra Gomez,F Dölek ,D J A Cockerill ,D D’enterria ,D Velicanu,L Gutay,M Pierini,J Strait,N Kovalchuk,P C Tiwari ,K Tatar,M Mulhearn,L Silvestris,M R Adams ,C Schwick,V Cherepanov,V Andreev,T Arndt,U Joshi,L Antonelli,A H Ball ,J Fay,Zainol Abidin Ibrahim ,N Tosi,G Eckerlin,G Organtini,C Civinini,M I Asghar ,A Lobanov,Qingyang Xu ,R Kinnunen,A Giammanco,D Gonzalez,J Kim,I Puljak,K Deiters,I Khvastunov,L M Pant ,E M Gregores ,M Guchait,J Dittmann,D De Jesus Damião ,V Jha,M Weber,S Özkorucuklu ,I Iashvili,U Hussain,L Skinnari,C E N Niemeyer ,B Maier,J Steggemann,R Lander,M Górski,M Jansová,D Acosta,V Palichik,A Whitbeck,T Boccali,P Azzurri,Andres Hugo Melo ,G Iles,M Ruspa,J B Sauvan ,S Pigazzini,S Czellár ,A G Stahl Leiton ,Y Chào ,V M Ghete ,S Obraztsov,J E Cole ,A Kapoor,M Dalchenko,A Terkulov,T H Doan ,K Doroba,A Ovcharova,X Gao,D Gigi,P Bargassa,H Sakulin,S Mallios,S Marcellini,M Tadel,A Ruiz-Jimeno,B Grynyov,L A T Bauerdick ,P K Behera ,V Danilov,D Spiga,I Dumanoğlu ,F Glege,M Kazana,Mehmet Özgür Sahin ,M Lipiński ,R Band,M Seidel,Q Li,F Zhang,B Hashemi,C Hensel,H Liu,S C Zenz ,P Traczyk,C Jessop,D A Sanz Becerra ,M Kirsanov,P Elmer,S Thakur,M Gul,P Giacomelli,G S F Stephans ,M Masciovecchio,Min Sun ,M Murray,Y Jo,M Peruzzi,G Oh,P J Fernández Manteca ,A Sznajder,F Romeo,S Dey,J Keaveney,M Kirakosyan,D Lange,Z Liu,W Waltenberger,D C Son ,L F Chaparro Sierra ,A Moraes,P Jarry,V Valuev,A Savoy-Navarro,S Sekmen,E Barberis,A Tiko,P K Netrakanti ,F Özok ,G Hall,O Karacheban,H R Hoorani ,M Schönenberger,B L Winer ,S Moortgat,R Bainbridge,W Shi,L Bäni,C A Bernardes ,J Hirschauer,G P Van Onsem ,R D Field ,D Arcaro,R López-Fernández ,M Zanetti,V Murzin,D M Raymond ,S Shalhout,N J Hadley ,Z P Mao ,A Nikitenko,M Kolosova,K Klein,A Zhang,M Cipriani,A Dermenev,V Rusinov,B P Padley ,P Millet,M Pesaresi,J Multhaup,V Mossolov,D Majumder,A W Jung ,T Peltola,N Woods,M Azarkin,T Šuša ,V Rodŕıguez Bouza ,F Fabozzi,T Rodrigo,B Wysłouch ,P Vischia,C Laner,B Jayatilaka,M Giffels,Z S Demiroglu ,N Poudyal,Vittorio Raoul Tavolaro ,C Campagnari,Á Hunyadi,P Sphicas,J S Wood ,A Perloff,S Harper,G Roland,S Khalil,A Ebrahimi,D Liko,J F De Trocóniz ,S Chauhan,V Dūdėnas ,R Leonardi,S Mrenna,R Gupta,S Dittmer,G B Cerati ,J Bradmiller-Feld,I Bachiller,I J Cabrillo ,Feng Liu ,G Mandorli,M Liu,A Pashenkov,J G Acosta ,A Skuja,E Schmitz,F Pauß ,A Giassi,M Brodski,A Reinsvold,D R Claes ,J A Brochero Cifuentes ,M Fernández ,V Mariani,R Eusebi,T Lenz,P Kokkas,M Csanád ,M Waqas,P Janot,K Höepfner ,G Davies,M Donegà,Daniel John Karmgard ,S Brochet,E Migliore,D Noonan,M Casarsa,G Hamel De Monchenault,E Conte,H J Simonis ,A Elwood,B Klima,G I Veres ,I Topsis-Giotis,U G Tok ,John Michael Marraffino ,A Çakır ,E Avdeeva,V Savrin,S Sánchez Cruz ,A C Marini ,C Heidegger,A K Kalsi ,P Verwilligen,K Dilsiz,M C Fouz ,J Królikowski ,M Paulini,D Strom,T Lampén,V Brigljević ,M Radziej,D H Miller ,E Torassa,C Zorbilmez,E A Yetkin ,S Flowers,F Ptochos,G Benelli,M Osherson,C Pistone,M Guilbaud,S Çerçi ,B Allen,C Sciacca,F Ligabue,N Parashar,J Strologas,D Kim,F Preiato,N Godinović ,F R Cavallo ,N Chernyavskaya,T Sinthuprasith,M Kadastik,D Leggat,D Saltzberg,J Rorie,S J Das ,S Fiorendi,N Mccoll,S J Qian ,J Hegeman,M Thiel,Gian Luca Pinna Angioni ,G Karapinar,M Goncharov,M Bianco,L Felď ,A Bocci,S Erdweg,M Derdzinski,S Ragazzi,G Quast,T Lindén,S Kyriacou,A Magnani,S Meola,M Diemoz,C Peng ,O González López ,C Ochando,C Delaere,S Bein,É Chapon ,M Kilpatrick,X Janssen,M Backhaus,T.J Kim,G Steinbrück,M A Mahmoud ,Dan Yu ,Arnab Roy ,D Sosnov,C Schiber,P T Cox ,A Tsirou,E A De Wolf ,M Felcini,P A Razis ,R I Rabadán-Trejo ,E C Chabert ,P Luukka,N Daci,M Spanring,B Vermassen,M Pelliccioni,B Roozbahani,F M Stober ,J P Fernández Ramos ,J M Vizan Garcia ,L Kardapoltsev,A Popov,J Andreä ,A Elliott-Peisert,J E Siado ,I Katkov,O Bondu,F Fallavollita,K Y Cheng ,N Neumeister,W Erdmann,A G Delannoy ,L Caminada,P Rumerio,R Chawla,K A Ulmer ,A Rinkevičius ,B Galinhas,A Zanetti,S Dugad,L Borgonovi,J Brandstetter,O Pooth,I O Atakisi ,S Braibant-Giacomelli,P Silva,Thea Klaeboe Aarrestad ,K Maeshima,A Saha,V O’dell ,J Pilot,S Gninenko,E M Da Costa ,S K Swain ,A Ivanov,M Sharan,D Colling,A Soha,C H Shepherd-Themistocleous ,W J Womersley ,Michael Rauch ,H Trauger,S Piperov,Chia‐Ming Kuo ,A Kaur,F Moortgat,K Shchelina,B Marzocchi,W Ko,A Rýd ,F Monti,A Kalinin,Sanjeev Kumar ,C Erice,J Zabel,Y H Chang ,A Nayak,L Pacher,W J Spalding ,José David Ruiz Álvarez ,M Cerrada,V Sordini,A T Meneguzzo ,S Dubé ,J A Merlin ,A Al-Bataineh,J Milošević ,T Järvinen,R Castaldi,M Bachtis,F Nessi‐Tedaldi ,A Grohsjean,W T Hung ,A Singh,G P Siroli ,C Ciocca,J Vaitkus,J F Benitez ,S Padhi,J Han,M T Grippo ,Tao Zhang ,L Shchutska,J Lange,Y H Shin ,P Govoni,E Scott,S S Yu ,M B Tonjes ,I Vorobiev,А Спиридонов ,A Perrotta,L Mundim,V Golovtsov,N Bartosik,H Flächer ,T Esch,B Ille,Bilal Kiani ,C Botta,E Paradas,W.-S Hou,S V Gleyzer ,A Godizov,A Petrilli,S B Beri ,A Fagot,I B Laktineh ,A García-Bellido ,I A Cali ,Andrey Demiyanov ,B Işıldak ,Y Mao,G Tsipolitis,A Safonov,R A Manzoni ,G Gómez ,D Roy,O Davignon,E Manca,N Faltermann,S Linn,D Treille,A Karavdina,T Q Nguyen ,C Lange,J M Hernández ,C Reissel,A Modak,G M Bilei ,S Thüer,T Ferguson,Y Chen,S Dutt,X Chen,T Á Vámi ,J Karancsi,M Shopova,N Trevisani,D Philippov,M A Shah ,M Plagge,M C Duran-Osuna ,P Harris,F A Triantis ,O Hindrichs,I Hoş ,E Clément ,M I Nagy ,D Blöch ,A Rácz ,S Laurila,M W Arenton ,H Kim,G Cerminara,M Walczak,Wolfram Dietrich Zeuner ,Deepak Kumar Sahoo ,D Wright,F Lacroix,V Matveev,I.-A Melzer-Pellmann,R R Betts ,N Kellams,C Hajdú ,J Fernández Menéndez ,M Zeyrek,A Lanev,A Psallidas,V Veszprémi ,S Thomas,S Salur,A Baty,M Haytmyradov,S Cho,W Adam,R Chudasama,L Ristori,S Jabeen,S Leontsinis,H Qu,J Hauk,C Mclean,A Wightman,N Akchurin,Y Wen,Z Demiragli,J Luetic,I Papavergou,G Galati,L Apanasevich,A Raspereza,P Kumari,A V Gritsan ,M Konecki,M Trovato,Peter R Hobson ,Eric Wayne Vaandering ,H D Yoo ,H Saka,C Martínez Rivero ,I.C Park,M M Obertino ,B C Radburn-Smith ,R Chierici,J R Vlimant ,Mauro Emanuele Dinardo ,E E Kangal ,P Milenović ,M A Segura Delgado ,H B Newman ,L Soffi,J J Brooke ,A Juodagalvis,M Selvaggi,K Ranjan,G Sguazzoni,J Rander,R Bucci,L Uvarov,M Ramírez-García ,F Jensen,E Boos,S Oliveros,K Borras,I Miagkov,R M Brown ,R Patel,A Buccilli,R Hirosky,T Maënpaä ,Q Python,D Brzhechko,M M Defranchis ,S V Rusakov ,I Redondo,B Asavapibhop,P Sheldon,H.S Kim,S Dasu,Fábio Lúcio Alves ,K H Lo ,G Mäggi ,F L Navarria ,M W Ather ,Mara Senghi Soares ,L Pape,M Alyari,Y Haddad,J P Chou ,E Monteil,B Boimska,M I Paneva ,H F Heath ,R D’alessandro ,L Guiducci,S Greene,D Menasce,M I Josa ,J Sonneveld,G B Mohanty ,D Sheffield,J R Patterson ,D Moran,E W Hughes ,J Lim,C Harrington,E Garutti,G A Alves ,F Ravera,L Favart,P C Bhat ,A Bean,J Erö,E Manoni,J F Schulte ,M N Yusli ,M Heindl,F M Pitters ,A Starodumov,A Magitteri,F Boran,L Calligaris,M D’alfonso ,A Dishaw,R Walsh,G Gökbulut ,Q Wang,T Y Ling ,Alberto Orso Maria Iorio ,D J Hofman ,I D Reid ,Sergio F Novaes ,G Ortona,A K Virdi ,Y Feng,N Béni ,S Lehti,K H M Kwok ,M Dordevic,C Mcginn,S Norberg,J Heideman,M Musich,A Wisecarver,J R Komaragiri ,O Surányi,Aashaq Shah,A Sharma,M Gallinaro,M Tytgat,J P Cumalat ,P K Rout ,D Smith,G Boudoul,K Buńkowski ,Michael Benjamin Andrews ,V Lemaı̂tre ,A Kalogeropoulos,P G Mercadante ,E Palencia Cortezón ,D H Zhu ,D Beghin,I Lokhtin,E Auffray,Y D Oh ,L Bianchini,J L Faure ,D Gastler,A Ackert,Z Chen,S R Wagner ,S Girgis,B Bilin,J Mnich,M Yalvac,A Vanhoefer,S S Chhibra ,V Korotkikh,Merve Nazlım Ağaras ,R.-S Lu,Weikang Lin ,F Pandolfi,A Bylinkin,N Manthos,C Grab,K Stenson,D Abbaneo,H C Kaestli ,D Anderson,J.S Kim,W Fang,G Touquet,P Levchenko,A Çelik ,G Negro,E Pérez ,S Y Hoh ,Z L Trocsanyi ,S C Tonwar ,L Litov,V E Barnes ,H Rykaczewski,A Kalinowski,N V Tran ,D M Newbold ,S C Eno ,J Chu,T Bose,S M A Ghiasi Shirazi ,R Shevchenko,R Klanner,C Schnaible,A Hart,S Ghosh,J N Butler ,M Wayne,M Johnson,O Prokofyev,J Kunkle,M Paganoni,H Castilla‐Valdez ,D A Hangal ,F Wang,D Ćutts ,J Haller,C Hill,R Démina ,T Perry,M Monteno,B R Yates ,L Levchuk,S M Shaheen ,S Schnetzer,Y R Joshi ,H Tholen,D Bourilkov,M J Kortelainen ,R K Dewanjee ,J Alimena,A Snigirev,Н Голубев ,P H Butler ,A Kyriakis,A García Alonso,S Orfanelli,K Bloom,J K Heikkilä ,P Adžić ,R Dell’orso

doi:10.1016/j.physletb.2019.135048

Abstract

The production of W± bosons is studied in proton-lead (pPb) collisions at a nucleon-nucleon centre-of-mass energy of sNN=8.16TeV. Measurements are performed in the W±→μ±νμ channel using a data sample corresponding to an integrated luminosity of 173.4±6.1nb−1, collected by the CMS Collaboration at the LHC. The number of positively and negatively charged W bosons is determined separately in the muon pseudorapidity region in the laboratory frame |ηlabμ|<2.4 and transverse momentum pTμ>25GeV/c. The W± boson differential cross sections, muon charge asymmetry, and the ratios of W± boson yields for the proton-going over the Pb-going beam directions are reported as a function of the muon pseudorapidity in the nucleon-nucleon centre-of-mass frame. The measurements are compared to the predictions from theoretical calculations based on parton distribution functions (PDFs) at next-to-leading-order. The results favour PDF calculations that include nuclear modifications and provide constraints on the nuclear PDF global fits.

Highlights

The production of electroweak (EW) gauge bosons is considered to be a powerful probe of the parton distribution functions (PDFs) of the proton [1]
The nuclear PDFs are expected to be enhanced for partons carrying a momentum fraction in the range 5 × 10−2 x 10−1 in the so-called antishadowing region, and suppressed for x 10−2 in the shadowing region [9], with the modifications depending on the scale Q 2
The measurements are compared to theoretical predictions from both proton parton distribution functions (PDFs) (CT14) and nuclear PDF (CT14+EPPS16, CT14+nCTEQ15) sets

Summary

Introduction

The production of electroweak (EW) gauge bosons is considered to be a powerful probe of the parton distribution functions (PDFs) of the proton [1]. The measurements of EW boson production in proton-nucleus and nucleus-nucleus collisions, available for the first time at centreof-mass energies of the TeV scale, provide constraints on nuclear modifications of the PDFs [5,6,7,8]. The nuclear PDFs (nPDFs) are expected to be enhanced for partons carrying a momentum fraction in the range 5 × 10−2 x 10−1 in the so-called antishadowing region, and suppressed for x 10−2 in the shadowing region [9], with the modifications depending on the scale Q 2. Because of the limited amount and type of experimental data sets available for nuclear collisions, the determination of the nuclear parton densities is less precise than for the free-proton case. The nPDF uncertainties are one of the main limitations of the precision of quantum chromodynamics (QCD) calculations describing hardscattering processes in nuclear collisions at high energies [7]

Methods

Results

Conclusion