UvA-DARE (

The cross-section for the production of two jets in association with a leptonically decaying Z boson ( Zj j ) is measured in proton–proton collisions at a centre-of-mass energy of 13 TeV, using data recorded with the ATLAS detector at the Large Hadron Collider, corresponding to an integrated luminosity of 3.2 fb − 1 . The electroweak Zj j cross-section is extracted in a fiducial region chosen to enhance the electroweak contribution relative to the dominant Drell–Yan Zj j process, which is constrained using a data-driven approach. The measured fiducial electroweak cross-section is σ Zjj EW = 119 ± 16 ( stat .) ± 20 ( syst .) ± 2 ( lumi .) fb for dijet invariant mass greater than 250 GeV, and 34 . 2 ± 5 . 8 ( stat .) ± 5 . 5 ( syst .) ± 0 . 7 ( lumi .) fb for dijet invariant mass greater than 1 TeV. Standard Model predictions are in agreement with the measurements. The inclusive Zj j cross-section is also measured in six different fiducial regions with varying contributions from electroweak and Drell–Yan Zj j production.

G. Stark | P. Werner | F. Wang | M. Vogel | S. Timoshenko | R. Stroynowski | P. Tornambe | J. Wang | P. Steinberg | R. Wang | A. Undrus | T. Schroeder | S. Wenig | J. Webster | N. Wermes | H. Stelzer | E. Pastor | R. Vári | P. Taylor | J. Tóth | A. Taylor | Q. Wang | J. Strandberg | H. Wang | W. Walkowiak | R. Vari | M. Werner | R. Teuscher | F. Thiele | H. Schmitt | J. Weingarten | K. Varvell | E. Tahirovic | C. Wang | S. Terada | M. Tanaka | Y. Unno | A. Vermeulen | M. Villa | A. C. Taylor | D. Temple | T. Trefzger | S. Weber | C. Weiser | S. Tarem | Y. Tayalati | G. Unel | F. Ungaro | V. Vorobel | J. Vossebeld | E. Starchenko | P. Staroba | P. Starovoitov | G. Stoicea | S. Stonjek | P. Strizenec | S. A. Stucci | V. Sulin | C. Suster | M. Svatos | M. Swiatlowski | I. Sykora | T. Sykora | A. Talyshev | S. Tapprogge | G. F. Tartarelli | M. Tasevsky | P. Teixeira-Dias | S. Terzo | T. Theveneaux-Pelzer | S. Tisserant | S. Todorova-Nova | K. Tokushuku | M. Tomoto | C. J. Treado | F. Tresoldi | A. Tricoli | S. Trincaz-Duvoid | B. Trocmé | A. Trzupek | E. Tskhadadze | V. Tsulaia | A. Tudorache | V. Tudorache | T. T. Tulbure | S. Turchikhin | D. Turgeman | R. Turra | C. Valderanis | E. V. Santurio | W. Vandelli | D. Varouchas | F. Vazeille | J. Veatch | S. Veneziano | M. Verducci | T. Vickey | M. Vincter | C. Vittori | I. Vivarelli | K. Vorobev | N. Vranjes | I. Vukotic | H. Wahlberg | C. Wanotayaroj | A. Weidberg | T. Wenaus | H. Stenzel | G. Stewart | M. C. Stockton | A. Straessner | S. Strandberg | R. Ströhmer | D. Strom | A. Strubig | B. Stugu | S. Sultansoy | T. Sumida | X. Sun | M. R. Sutton | S. Suzuki | S. Swift | K. Tackmann | J. Taenzer | A. Taffard | R. Tafirout | T. Takeshita | Y. Takubo | M. Talby | J. Tanaka | S. Araya | P. Tas | E. Tassi | A. T. Delgado | G. N. Taylor | W. Taylor | H. T. Kate | K. Terashi | J. Terron | M. Testa | E. Thomson | P. Tipton | K. Todome | S. Todt | S. Tokár | E. Tolley | E. Torrence | H. Torres | W. Trischuk | M. Trzebinski | V. Tsiskaridze | S. Tsuno | D. Tsybychev | I. T. Cakir | F. Ukegawa | G. Unal | P. Urquijo | B. Vachon | A. Vaidya | M. Valente | S. Valentinetti | A. Valero | L. Valéry | A. Vallier | A. Vaniachine | C. Varni | T. Varol | M. Perez | E. Vilucchi | P. Vokac | P. Wagner | R. Walker | S. Sun | R. Takashima | J. Thomas | S. Suchek | D. Sultan | K. Suruliz | T. Tashiro | J. Teoh | L. Thomsen | R. Torres | J. Tojo | L. Tompkins | A. Trofymov | C. Troncon | L. Truong | J. Tseng | P. V. Tsiareshka | I. I. Tsukerman | Y. Tu | G. Ucchielli | J. Urban | G. Usai | V. Vacek | J. Ferrer | P. V. Gemmeren | I. V. Vulpen | M. Vanadia | L. M. Veloce | F. Veloso | A. Ventura | W. Verkerke | J. Vermeulen | N. V. Maira | E. V. Toerne | W. Wagner | J. Walder | A. Warburton | A. Washbrook | G. Watts | D. Su | D. Tovey | S. Watts | B. Weinert | M. Strauss | N. A. Styles | B. Waugh | M. Weirich | B. Stapf | S. Stapnes | J. Stark | S. Stark | S. Stärz | R. Staszewski | B. Stelzer | O. Stelzer-Chilton | M. Stoebe | P. Stolte | A. R. Stradling | M. E. Stramaglia | J. Su | Y. Sugaya | M. Suk | D. Ta | N. Taiblum | H. Takai | E. Takasugi | R. Tanaka | S. Tanaka | R. Tanioka | B. B. Tannenwald | P. Teng | F. Tepel | J. Thomas-Wilsker | P. D. Thompson | A. S. Thompson | M. J. Tibbetts | V. Tikhomirov | Yu. A. Tikhonov | L. Tomlinson | K. Toms | B. Tong | F. Touchard | M. F. Tripiana | M. Trottier-McDonald | M. Trovatelli | K. W. Tsang | G. Tsipolitis | N. Tsirintanis | S. Tsiskaridze | K. M. Tsui | A. Tūna | S. A. Tupputi | P. M. Tuts | I. Ueda | M. Ughetto | C. Unverdorben | P. Urrejola | J. Usui | L. Vacavant | K. Vadla | S. Valkar | W. V. D. Wollenberg | H. V. D. Graaf | J. V. Nieuwkoop | P. Vankov | G. Vardanyan | E. W. Varnes | A. Vartapetian | J. Vasquez | G. A. Vasquez | V. Veeraraghavan | M. Venturi | N. Venturi | A. Venturini | V. Vercesi | M. Vetterli | O. Viazlo | I. Vichou | O. E. V. Boeriu | G. Viehhauser | S. Viel | L. Vigani | V. B. Vinogradov | A. Vishwakarma | S. Vlachos | G. Volpi | M. Vos | R. Voss | J. H. Vossebeld | M. Milosavljevic | V. Vrba | M. Vreeswijk | R. Vuillermet | J. Wagner-Kuhr | S. Wahrmund | V. Wallangen | T. Wang | C. Ward | D. R. Wardrope | P. Watkins | A. T. Watson | M. Watson | A. F. Webb | S. Webb | M. Weber | H. Weits | P. S. Wells | T. Wengler | K. Tackmann | J. J. Teoh | R. Teuscher | L. Tompkins | I. Tsukerman | H. Stelzer | J. Terrón | K. Varvell | G. Viehhauser | J. Weingarten | S. Wenig | A. Stradling | V. V. Sulin | M. G. Vincter | A. Watson | A. Tuna | H. Graaf | H. V. D. Schmitt | C. Weiser

[1]  Atlas Collaboration.  Jet energy scale measurements and their systematic uncertainties in proton-proton collisions at √s=13 TeV with the ATLAS detector , 2017, 1703.09665.

[2]  G. Gomez-Ceballos,et al.  Measurements of differential cross sections for associated production of a W boson and jets in proton-proton collisions at √s = 8 TeV , 2017 .

[3]  A. S. Mete,et al.  Electron efficiency measurements with the ATLAS detector using 2012 LHC proton–proton collision data , 2016, The European Physical Journal. C, Particles and Fields.

[4]  Scoap.  Performance of the ATLAS trigger system in 2015 , 2016, The European Physical Journal. C, Particles and Fields.

[5]  J. T. Childers,et al.  Luminosity determination in pp collisions at \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\sqrt{s}$$\end{document}s , 2016, The European Physical Journal C.

[6]  M. P. Casado,et al.  Muon reconstruction performance of the ATLAS detector in proton–proton collision data at s =13 TeV , 2016, 1603.05598.

[7]  Andrew Buckley,et al.  ATLAS Pythia 8 Tunes to 7 TeV Data , 2014 .

[8]  J. Latorre,et al.  Parton distributions for the LHC run II , 2014, 1410.8849.

[9]  C. Collaboration,et al.  Measurement of electroweak production of two jets in association with a Z boson in proton-proton collisions at sqrt(s)= 8 TeV , 2014, 1410.3153.

[10]  Peter Skands,et al.  An introduction to PYTHIA 8.2 , 2014, Comput. Phys. Commun..

[11]  N. Giokaris,et al.  Measurement of the Z/γ * boson transverse momentum distribution in pp collisions at \( \sqrt{s}=7 \) TeV with the ATLAS detector , 2014 .

[12]  R. Frederix,et al.  The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations , 2014, 1405.0301.

[13]  V. M. Ghete,et al.  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 , 2013, 1305.7389.

[14]  D. Zeppenfeld,et al.  Parton shower effects on W and Z production via vector boson fusion at NLO QCD , 2013, 1302.2884.

[15]  Frank Petriello,et al.  Combining QCD and electroweak corrections to dilepton production in the framework of the FEWZ simulation code , 2012 .

[16]  F. Siegert,et al.  QCD matrix elements + parton showers. The NLO case , 2012, Journal of High Energy Physics.

[17]  Frank Siegert,et al.  NLO QCD matrix elements + parton showers in e+e− → hadrons , 2012, Journal of High Energy Physics.

[18]  S. Forte,et al.  Parton distributions with LHC data , 2012, 1207.1303.

[19]  Michal Czakon,et al.  Top++: A program for the calculation of the top-pair cross-section at hadron colliders , 2011, Comput. Phys. Commun..

[20]  M. Cacciari,et al.  FastJet user manual , 2011, 1111.6097.

[21]  F Cascioli,et al.  Scattering amplitudes with open loops. , 2011, Physical review letters.

[22]  Ye Li,et al.  FEWZ 2.0: A code for hadronic Z production at next-to-next-to-leading order , 2010, Comput. Phys. Commun..

[23]  J. Huston,et al.  New parton distributions for collider physics , 2010, 1007.2241.

[24]  J. T. Childers,et al.  The ATLAS Simulation Infrastructure , 2010, 1005.4568.

[25]  P. Skands.  Tuning Monte Carlo Generators: The Perugia Tunes , 2010, 1005.3457.

[26]  E. Re,et al.  A general framework for implementing NLO calculations in shower Monte Carlo programs: the POWHEG BOX , 2010, 1002.2581.

[27]  F. Siegert,et al.  Event generation with SHERPA 1.1 , 2008, 0811.4622.

[28]  A. Goshaw.  The ATLAS Experiment at the CERN Large Hadron Collider , 2008 .

[29]  T. Gleisberg,et al.  Comix, a new matrix element generator , 2008, 0808.3674.

[30]  D. Rousseau,et al.  Calorimeter Clustering Algorithms : Description and Performance , 2008 .

[31]  M. Gigg,et al.  Herwig++ physics and manual , 2008, 0803.0883.

[32]  M. Cacciari,et al.  The anti-$k_t$ jet clustering algorithm , 2008, 0802.1189.

[33]  P. Nason,et al.  Matching NLO QCD computations with Parton Shower simulations: the POWHEG method , 2007, 0709.2092.

[34]  S. Schumann,et al.  A Parton shower algorithm based on Catani-Seymour dipole factorisation , 2007, 0709.1027.

[35]  R. S. Thorne,et al.  Parton distributions for the LHC , 2007, 0901.0002.

[36]  P. Nason.  A new method for combining NLO QCD with shower Monte Carlo algorithms , 2004, hep-ph/0409146.

[37]  L. Dixon,et al.  High-precision QCD at hadron colliders: Electroweak gauge boson rapidity distributions at next-to-next-to leading order , 2003, hep-ph/0312266.

[38]  R. Pittau,et al.  ALPGEN, a generator for hard multiparton processes in hadronic collisions , 2003 .

[39]  W. Verkerke,et al.  The RooFit Toolkit for Data Modeling , 2003, physics/0306116.

[40]  J. Huston,et al.  New generation of parton distributions with uncertainties from global QCD analysis , 2002, hep-ph/0201195.

[41]  F. Krauss,et al.  QCD Matrix Elements + Parton Showers , 2001, hep-ph/0109231.

[42]  S. Mrenna,et al.  Pythia 6.3 physics and manual , 2003, hep-ph/0308153.

[43]  D. Rainwater,et al.  Probing color-singlet exchange in Z+2-jet events at the CERN LHC. , 1996, Physical review. D, Particles and fields.

[44]  Christian,et al.  Jet energy scale measurements and their systematic uncertainties in proton-proton collisions at root s=13 TeV with the ATLAS detector , 2017 .

[45]  M. Aaboud.  Jet energy scale measurements and their systematic uncertainties in proton-proton collisions at s = 13 TeV with the ATLAS detector , 2017 .

[46]  M. Donadelli,et al.  Measurements of the production cross section of a ZZ boson in association with jets in pp collisions at s√=13s=13 TeV with the ATLAS detector , 2017 .

[47]  Lan V. Truong,et al.  Measurements of electroweak W j j production and constraints on anomalous gauge couplings with the ATLAS detector , 2017 .

[48]  Multi-boson simulation for 13 TeV ATLAS analyses , 2016 .

[49]  Bundschuh,et al.  Department of Physics , 2005 .

[50]  A. Dell'Acqua,et al.  Geant4—a simulation toolkit , 2003 .

[51]  Measurements of electroweak W j j production and constraints on anomalous gauge couplings with the ATLAS detector , 2022 .

[52]  ATLAS NOTE ATLAS-CONF-2014-018 Tagging and suppression of pileup jets with the ATLAS detector , 2022 .