Observation of electroweak W ± Z boson pair production in association with two jets in pp collisions at TeV the ATLAS detector

An observation of electroweak W ± Z production in association with two jets in proton–proton collisions is presented. The data collected by the ATLAS detector at the Large Hadron Collider in 2015 and 2016 at a centre-of-mass energy of √ s = 13 TeV are used, corresponding to an integrated luminosity of 36 . 1 fb − 1 . Events containing three identified leptons, either electrons or muons, and two jets are selected. The electroweak production of W ± Z bosons in association with two jets is measured with an observed significance of 5 . 3 standard deviations. A fiducial cross-section for electroweak production including interference effects and for a single leptonic decay mode is measured to be σ WZjj − EW = 0 . 57 + 0 . 14 − 0 . 13 ( stat .) + 0 . 07 − 0 . 06 ( syst .) fb. Total and differential fiducial cross-sections of the sum of W ± Zjj electroweak and strong productions for several kinematic observables are also measured.

Lan V. Truong | Aaron Steven White | A. Trzupek | V. Tsulaia | E. Tassi | S. Stonjek | A. Straessner | P. Strizenec | R. Stroynowski | B. Stugu | J. Stupak | Y. Sugaya | M. Suk | K. Suruliz | M. Svatos | T. Sykora | K. Tackmann | A. Taffard | R. Tafirout | N. Taiblum | H. Takai | Y. Takubo | M. Talby | S. Tapprogge | S. Tarem | G. Tartarelli | P. Tas | M. Tasevsky | Y. Tayalati | P. Teixeira-Dias | S. Terada | K. Terashi | J. Terron | A. Thompson | S. Timoshenko | S. Tisserant | J. Tojo | S. Tokár | K. Tokushuku | M. Tomoto | L. Tompkins | K. Toms | F. Touchard | T. Trefzger | S. Trincaz-Duvoid | M. Tripiana | B. Trocmé | C. Troncon | E. Tskhadadze | I. Tsukerman | S. Tsuno | D. Tsybychev | R. Turra | P. Tuts | I. Ueda | G. Unal | A. Undrus | G. Unel | P. Urquijo | L. Vacavant | B. Vachon | W. Vandelli | A. Vaniachine | P. Vankov | R. Vari | T. Varol | D. Varouchas | K. Varvell | F. Vazeille | F. Veloso | S. Veneziano | W. Verkerke | I. Vichou | T. Vickey | S. Viel | M. Perez | M. Vincter | S. Vlachos | P. Vokac | G. Volpi | N. Vranjes | I. Vukotic | W. Walkowiak | A. Washbrook | P. Watkins | A. Weidberg | J. Weingarten | C. Weiser | T. Wenaus | S. Wenig | P. Werner | M. Wessels | K. Whalen | T. Ženiš | S. Stucci | M. Swiatlowski | J. Taenzer | T. Tashiro | S. Terzo | M. Trovatelli | N. Tsirintanis | S. Turchikhin | F. Ungaro | L. Valéry | J. Nieuwkoop | J. Veatch | T. Sfiligoj | P. Stolte | D. Strom | A. Strubig | B. Tannenwald | J. J. Teoh | E. Tolley | K. Vorobev | C. Wanotayaroj | B. Weinert | P. Urrejola | F. Veloso | E. Varnes | A. Straessner | R. Ströhmer | S. Suchek | C. Suster | A. Taylor | P. Taylor | B. Tong | P. Tornambe | F. Tresoldi | D. Turgeman | I. Cakir | G. Ucchielli | J. Usui | C. Valderanis | E. Santurio | N. Whallon | A. Wharton | A. White | S. Watts | F. Trovato | S. Thais | A. Tee | K. Vadla | A. Sydorenko | V. Vecchio | M. Vogel | P. Tas | J. Tseng | M. Testa | D. Thomas | A. Vermeulen | E. Tahirovic | J. Tanaka | W. Taylor | Ryuichi Tanaka | K. Tackmann | A. Taylor | F. Tsai | F. Ungaro | A. M. Wharton | K. Terashi | A. Vaidya | L. Tompkins | K. Takeda | T. Trefzger | Y. Tian | S. Sun | S. Tsuno | R. Varì | E. Takasugi | S. Suzuki | T. Takeshita | A. Ventura | A. Warburton | F. Trovato | S. Araya | S. Wenig | M. Strauss | M. R. Sutton | A. Taffard | A. Valero | M. Tanaka | R. Walker | M. Wessels | C. Weber | I. Sýkora | A. T. Mohamed | J. Strandberg | J. Vermeulen | P. Wagner | E. Tassi | M. Vanadia | W. Wagner | M. Sullivan | J. P. Thomas | A. Tee | M. Valente | C. Weiser | H. Kate | G. Taylor | X. Sun | K. Tomiwa | R. Stroynowski | A. Undrus | P. Urquijo | J. Toth | G. Stoicea | C. Treado | B. Vachon | W. Walkowiak | S. Sultansoy | E. Thomson | S. Strandberg | T. Sumida | R. Tafirout | R. Takashima | Y. Takubo | M. Talby | S. Tarem | G. Tarna | J. J. Teoh | J. Terron | P. Thompson | V. Tikhomirov | S. Timoshenko | P. Tipton | K. Todome | S. Todt | J. Tojo | S. Tokár | E. Torrence | C. Tosciri | A. Trofymov | C. Troncon | M. Trzebinski | P. Tsiareshka | A. Tsirigotis | V. Tsiskaridze | I. Tsukerman | D. Tsybychev | E. Tzovara | F. Ukegawa | G. Unal | G. Usai | S. Valentinetti | A. Vallier | P. V. Gemmeren | I. V. Vulpen | C. Varni | K. Varvell | T. Schroeder | C. Vergis | W. Verkerke | N. V. Maira | L. Vigani | E. Vilucchi | R. Vuillermet | A. Webb | S. A. Weber | J. Weingarten | N. Wermes | K. Whalen | M. J. White | D. Whiteson | A. Tricoli | W. Trischuk | A. Vaniachine | H. Torres | P. Vokac | S. Swift | A. Sydorenko | S. Thais | F. Thiele | E. Tolley | L. Valéry | R. Vallance | D. V. Furelos | A. T. Delgado | A. Ventura | N. V. Maira | G. Taylor | M. Trzebiński | A. Warburton | J. Thomas | P. Gemmeren | I. Vulpen

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