UvA-DARE (Digital Academic Repository) A measurement of the ratio of the W and Z cross sections with exactly one associated jet in pp collisions at √s = 7 TeV with ATLAS

J. Schieck,M. Schioppa,S. Schlenker,J. Schlereth,E. Schmidt,K. Schmieden,C. Schmitt,S. Schmitt,M. Schmitz,A. Schöning,M. Schott,D. Schouten,J. Schovancová,M. Schram,C. Schroeder,N. Schroer,S. Schuh,G. Schuler,J. Schultes, H. Schultz-Coulon,H. Schulz,J. Schumacher,M. Schumacher,B. Schumm,P. Schune,C. Schwanenberger,A. Schwartzman,P. Schwemling,R. Schwienhorst,R. Schwierz,J. Schwindling,T. Schwindt,W. Scott,J. Searcy,E. Sedykh,E. Segura,S. Seidel,A. Seiden,F. Seifert,J. Seixas,G. Sekhniaidze,D. Seliverstov,B. Sellden,G. Sellers,M. Seman,N. Semprini-Cesari,C. Serfon,L. Serin,R. Seuster,H. Severini,M. Sevior,A. Sfyrla,E. Shabalina,M. Shamim,L. Shan,J. Shank, Q. Shao,M. Shapiro,P. Shatalov,L. Shaver,K. Shaw,D. Sherman,P. Sherwood,A. Shibata,H. Shichi,S. Shimizu,M. Shimojima,T. Shin,A. Shmeleva,M. Shochet,D. Short,M. Shupe,P. Sicho,A. Sidoti,A. Siebel,F. Siegert,J. Siegrist,D. Sijacki,O. Silbert,J. Silva,Y. Silver,D. Silverstein,S. Silverstein,V. Šimák,O. Simard,L. Simić,S. Simion,B. Simmons,M. Simonyan,Nicolas Produit,N. Sinev,V. Sipica,G. Siragusa,A. Sircar,A. Sisakyan,S. Sivoklokov,J. Sjölin, T. Sjursen,L. Skinnari,K. Skovpen,P. Skubic,N. Skvorodnev,M. Slater,T. Slavícek,K. Sliwa,T. Sloan,J. Sloper,V. Smakhtin,S. Smirnov,L. Smirnova,O. Smirnova,B. Smith,D. Smith,K. Smith,M. Smizanska,K. Smolek,A. Snesarev,S. Snow,J. Snow,J. Snuverink,S. Snyder, Marlon Soares,R. Sobie,J. Sodomka,A. Soffer,C. Solans,J. Šolc,E. Soldatov,U. Soldevila,E. Camillocci,A. Solodkov,O. Solovyanov,J. Sondericker,N. Soni,V. Sopko,B. Sopko,M. Sorbi,M. Sosebee,A. Soukharev,S. Spagnolo,F. Spanò,R. Spighi,G. Spigo,F. Spila,E. Spiriti,R. Spiwoks,M. Spousta,T. Spreitzer,B. Spurlock,R. Denis,T. Stahl,J. Stahlman,R. Stamen,E. Stanecka,R. Stanek,C. Stanescu,S. Stapnes,E. Starchenko,J. Stark,P. Staroba,P. Starovoitov,A. Staude,P. Šťavina,G. Stavropoulos,G. Steele,P. Steinbach,P. Steinberg,I. Štekl,B. Stelzer,H. Stelzer,O. Stelzer-Chilton,H. Stenzel,K. Stevenson,G. Stewart,J. A. Stillings,T. Stockmanns,M. Stockton,K. Stoerig,G. Stoicea,S. Stonjek,P. Strachota,A. Stradling,A. Straessner,J. Strandberg,S. Strandberg,A. Strandlie,M. Strang,E. Strauss,M. Strauss,P. Strizenec,R. Ströhmer,D. Strom,R. Stroynowski,J. Strube,B. Stugu,I. Stumer,J. Stupak,P. Sturm,D. Soh,H. Subramania,A. Succurro,Y. Sugaya,T. Sugimoto,C. Suhr,K. Suita,M. Suk,V. Sulin,S. Sultansoy,T. Sumida,X. Sun,J. Sundermann,K. Suruliz,S. Sushkov,G. Susinno,M. R. Sutton,Y. Suzuki,M. Svatos,Y. Sviridov,I. Sýkora,T. Sykora,B. Szeless,J. Sánchez,K. Tackmann,A. Taffard,R. Tafirout,N. Taiblum,Y. Takahashi,H. Takai,R. Takashima,H. Takeda,T. Takeshita,M. Talby,A. Talyshev,M. Tamsett,J. Tanaka,Ryuichi Tanaka,S. Tanaka,Y. Tanaka,K. Tani,N. Tannoury,G. Tappern,S. Tapprogge,D. Tardif,S. Tarem,F. Tarrade,G. Tartarelli,P. Tas,M. Tasevsky,E. Tassi,M. Tatarkhanov,Y. Tayalati,C. Taylor,Frank Taylor,G. Taylor,W. Taylor,M. Teinturier,M. Castanheira,P. Teixeira-Dias,K. K. Temming, H. Kate,P. Teng,S. Terada,K. Terashi,J. Terron,M. Terwort,M. Testa,R. Teuscher,J. Thadome,J. Therhaag,T. Theveneaux-Pelzer,M. Thioye,S. Thoma,J. P. Thomas,E. N. Thompson,P. Thompson,A. Thompson,E. Thomson,M. Thomson,R. Thun,F. Tian,V. Tikhomirov,P. Tipton,S. Tisserant,J. Tobias,B. Toczek,T. Todorov,B. Toggerson,J. Tojo,S. Tokár,K. Tokunaga,K. Tokushuku,K. Tollefson,M. Tomoto,L. Tompkins,K. Toms,G. Tong,A. Tonoyan,C. Topfel,N. Topilin,I. Torchiani,E. Torrence,H. Torres,E. Pastor,J. Toth,F. Touchard,D. Tovey,D. Traynor,T. Trefzger,L. Tremblet,A. Tricoli,S. Trincaz-Duvoid,T. N. Trinh,M. Tripiana,W. Trischuk,A. Trivedi,B. Trocmé,C. Troncon,M. Trottier-McDonald,A. Trzupek,C. Tsarouchas,M. Tsiakiris

semanticscholar（2012）

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Abstract

The ratio of production cross sections of the W and Z bosons with exactly one associated jet is presented as a function of jet transverse momentum threshold. The measurement has been designed to maximise cancellation of experimental and theoretical uncertainties, and is reported both within a particle-level kinematic range corresponding to the detector acceptance and as a total cross-section ratio. Results are obtained with the ATLAS detector at the LHC in pp collisions at a centre-of-mass energy of 7 TeV using an integrated luminosity of 33 pb − 1 . The results are compared with perturbative leading-order, leading-log, and next-to-leading-order QCD predictions, and are found to agree within experimental and theoretical uncertainties. The ratio is measured for events with a single jet with p T > 30 GeV to be 8 . 73 ± 0 . 30(stat) ± 0 . 40(syst) in the electron channel, and 8 . 49 ± 0 . 23(stat) ± 0 . 33(syst) in the muon channel.

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