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EnglishA measurement of the production cross-section for top quark pairs (t (t) over bar) in pp collisions at root s = 7 TeV is presented using data recorded with the ATLAS detector at the Large Hadron Collider. Events are selected in the single lepton topology by requiring an electron or muon, large missing transverse momentum and at least three jets. With a data sample of 35 pb(-1), two different multivariate methods, one of which uses b-quark jet identification while the other does not, use kinematic variables to obtain cross-section measurements of sigma(t (t) over bar) = 187 +/- 11(stat.)(-17)(+18)(syst.) +/- 6(lumi.) pb and sigma(t (t) over bar) = 173 +/- 17(stat.)(-16)(+18)(syst.) +/- 6(lumi.) pb respectively. The two measurements are in agreement with each other and with QCD calculations. The first measurement has a better a priori sensitivity and constitutes the main result of this Letter. (c) 2012 CERN. Published by Elsevier B.V. All rights reserved.
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| Titolo: | Measurement of the top quark pair production cross-section with ATLAS in the single lepton channel |
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Mouraviev SV Moyse EJW Mudrinicb M Mueller F Mueller J Mueller K Muller TA Muenstermann D Muir A Munwes Y Murray WJ Mussche I Musto E Myagkov AG Myska M Nadal J Nagai K Nagano K Nagasaka Y Nairz AM Nakahama Y Nakamura K Nakamura T Nakano I Nanava G Napier A Nash M Nation NR Nattermann T Naumann T Navarro G Nea HA Nebot E Nechaeva PY Negri A Negri G Nektarijevic S Nelson A Nelson S Nelson TK Nemecek S Nemethy P Nepomuceno AA Nessi M Neubauer MS Neusiedl A Neves RM Nevski P Newman PR Hong VNT Nickerson RB Nicolaidou R Nicolas L Nicquevert B Niedercorn F Nielsen J Niinikoski T Nikiforou N Nikiforov A Nikolaenko V Nikolaev K Nikolic Audit I Nikolics K Nikolopoulos K Nilsen H Nilsson P Ninomiya Y Nisati A Nishiyama T Nisius R Nodulman L Nomachi M Nomidis I Nordberg M Nordkvista B Norton PR Novakova J Nozaki M Nozka L Nugenta IM Nuncio Quiroz AE Hanninger GN Nunnemann T Nurse E Nyman T O'Brien BJ O'Neale SW O'Neil DC O'Shea V Oakham FG Oberlack H Ocariz J Ochi A Oda S Odaka S Odier J Ogren H 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Peshekhonov VD Petersen BA Petersen J Petersen TC Petit E Petridis A Petridou C Petrolo E Petrucci F Petschull D Petteni M Pezoa R Phan A Phillips PW Piacquadio G Piccaro E Piccininia M Piec SM Piegaia R Pilcher JE Pilkington AD Pina J Pinamonti M Pinder A Pinfold JL Ping J Pinto B Pirotte O Pizio C Plamondon M Pleier MA Pleskach AV Poblaguev A Poddar S Podlyski F Poggioli L Poghosyan T Pohl M Polci F Polesello G Policicchio A Polini A Poll J Polychronakos V Pomarede DM Pomeroy D Pommes K Pontecorvo L Pope BG Popeneciu GA Popovic DS Poppleton A Bueso XP Posch C Pospelov GE Pospisil S Potrap IN Potter CJ Potter CT Poulard G Poveda J Prabhu R Pralavorio P Pranko A Prasad S Pravahan R Prell S Pretzl K Pribyl L Price D Price LE Price MJ Prieur D Primavera M Prokofiev K Prokoshin F Protopopescu S Proudfoot J Prudent X Przysiezniak H Psoroulas S Ptacek E Pueschel E Purdham J Purohit M Puzo P Pylypchenko Y Qian J Qian Z Qin Z Quadt A Quarrie DR Quayle WB Quinonez F Raas M Radescu V Radics B 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Ruggieri F Ruiz Martinez A Rumiantsev V Rumyantsev L Runge K Runolfsson O Rurikova Z Rusakovich NA Rust DR Rutherfoord JP Ruwiedel C Ruzicka P Ryabov YF Ryadovikov V Ryan P Rybar M Rybkin G Ryder NC Rzaeva S Saavedra AF Sadeh I Sadrozinski HFW Sadykov R Tehrania FS Sakamoto H Salamanna G Salamona A Saleem M Salihagic D Salnikov A Salt J Ferrando BMS Salvatorea D Salvatore F Salvucci A Salzburger A Sampsonidis D Samset BH Sancheza A Sandaker H Sander HG Sanders MP Sandhoff M Sandoval T Sandoval C Sandstroem R Sandvoss S Sankey DPC Sansoni A Rios CS Santoni C Santonico R Santos H Saraivaa JG Sarangi T Sarkisyan Grinbaum E Sarri F Sartisohn G Sasaki O Sasao N Satsounkevitch I Sauvage G Sauvan E Sauvan JB Savard P Savinov V Savu DO Sawyer L Saxon DH Says LP Sbarraa C Sbrizzi A Scallon O Scannicchio DA Schaarschmidt J Schacht R Schafer U Schaepe S Schaetzel S Schaffer AC Schaile D Schamberger RD Schamov AG Scharf V Schegelsky VA Scheirich D Schernau M Scherzer MI Schiavi C Schieck J Schlenker S Schlereth JL Schmidt E Schmieden K Schmitt C Schmitt S Schmitz M Schoning A Schott M Schoutena D Schovancova J Schram M Schroeder C Schroer N Schuh S Schuler G Schultes J Schultz Coulon HC Schulz H Schumacher JW Schumacher M Schumm BA Schune P Schwanenberger C Schwartzman A Schwemling P Schwienhorst R Schwierz R Schwindling J Schwindt T Scott WG Searcy J Sedov G Sedykh E Segura E Seidel SC Seiden A Seifert F Seixas JM Sekhniaidze G Seliverstov DM Sellden B Sellers G Seman M Semprini Cesari N Serfon C Serin L Seuster R Severini H Sevior ME Sfyrla A Shabalina E Shamim M Shan LY Shank JT Shao QT Shapiro M Shatalov PB Shaver L Shaw K Sherman D Sherwood P Shibata A Shichi H Shimizu S Shimojima M Shin T Shiyakova M Shmeleva A Shochet MJ Shoal D Shrestha S Shupe MA Sicho P Sidoti A Siebel A Siegert F Sijacki D Silbert O Silva J Silver Y Silverstein D Silverstein SB Simak V Simard O Simic L Simion S Simmons B Simonyan M Sinervo R Sinev NB Sipica V Siragusa G Sircar A Sisakyan AN Sivoklokov SY Sjolin J Sjursen TB Skinnari LA Skottowe HP Skovpen K Skubic P Skvorodnev N Slater M Slavicek T Sliwa K Sloper J Smakhtin V Smirnov SY Smirnova LN Smirnova O Smith BC Smith D Smith KM Smizanska M Smolek K Snesarev AA Snow SW Snow J Snuverink J Snyder S Soaresa M Sobie R Sodomka J Soffer A Solans CA Solar M Solc J Soldatov E Soldevila U Camillocci ES Solodkov AA Solovyanov V Sondericker J Soni N Sopko V Sopko B Sosebee M Soualaha R Soukharev A Spagnolo S Spano F Spighi R Spigo G Spila F Spiwoks R Spousta M Spreitzer T Spurlock B St Denis RD Stahl T Stahlman J Stamena R Stanecka E Stanek RW Stanescua C Stapnes S Starchenko EA Stark J Staroba P Starovoitov P Staude A Stavina P Stavropoulos G Steele G Steinbach P Steinberg P Stek I Stelzer B Stelzer HJ Stelzer Chilton O Stenzel H Stevenson K Stewart GA Stillings JA Stockton MC Stoerig K Stoicea G Stonjek S Strachota P Stradling AR Straessner A Strandberg J Strandberg S Strandlie A Strang M Strauss E Strauss M Strizenec P Strohmer R Strom DM Strong JA Stroynowski R Strube J Stugu B Stumer I Stupak J Sturm R Soh DA Su D Subramania H Succurro A Sugaya Y Sugimoto I Suhr C Suita K Suk M Sulin VV Sultansoy S Sumida T Sun X Sundermann JE Suruliz K Sushkov S Susinno G Sutton MR Suzuki Y Suzuki Y Svatos M Sviridov YM Swedish S Sykora I Sykora T Szeless B Sanchez J Ta D Tackmann K Taffard A Tafirout R Taiblum N Takahashi Y Takai H Takashima R Takeda H Takeshita T Talby M Talyshevf A Tamsett MC Tanaka J Tanaka R Tanaka S Tanaka S Tanaka Y Tani K Tannoury N Tappern GP Tapprogge S Tardif D Tarem S Tarrade F Tartarellia GF Tas P Tasevsky M Tassia E Tatarkhanov M Tayalati Y Taylor C Taylor FE Taylor GN Taylor W Teinturier M Castanheira MTD Teixeira Dias P Temming KK Ten Kate H Teng PK Terada S Terashi K Terron J Terwort M Testa M Teuscher RJ Thadome J Therhaag J Theveneaux Pelzer T Thioye M Thoma S Thomas JP Thompson EN Thompson PD Thompson PD Thompson AS Thomson E Thomson M Thun RP Tian F Tic T Tikhomirov VO Tikhonov VA Timoshenko S Tipton P Viegas FJTA Tisserant S Toczek B Todorov T Todorova Nova S Toggerson B Tojo J Tokara S Tokunaga K Tokushuku K Tollefson K Tomoto M Tompkins L Toms K Tong G Tonoyan A Topfel C Topilin ND Torchiani I Torrence E Torres H Pastor ET Toth J Touchard F Tovey DR Traynor D Trefzger T Tremblet L Tricoli A Trigger IM Trincaz Duvoid S Trinh TN Tripiana MF Trischuk W Trivedi A Trocme B Troncon C Trottier McDonald M Trzebinski M Trzupek A Tsarouchas C Tseng JCL Tsiakiris M Tsiareshka PV Tsionou D Tsipolitis G Tsiskaridze V Tskhadadze EG Tsukerman II Tsulaia V Tsung JW Tsuno S Tsybychev D Tua A Tudorache A Tudorache V Tuggle JM Turala M Turecek D Cakir IT Turlay E Turra R Tuts PM Tykhonov A Tylmad M Tyndel M Tyrvainen H Tzanakos G Uchida K Ueda I Ueno R Ugland M Uhlenbrock M Uhrmacher M Ukegawa F Una G Underwood DG Undrus A Une G Unno Y Urbaniec D Urkovsky E Usai G Uslenghi M Vacavant L Vacek V Vachon B Vahsen S Valenta J Valente R Valentinetti S Valkar S Gallego EV Vallecorsa S Ferrer JAV van der Graaf H van der Kraaij E Van der Leeuw R van der Poel E van der Ster D van Eldik N van Gemmeren P van Kesteren Z van Vulpen I Vanadia M Vandelli W Vandoni G Vaniachine A Vankov R Vannucci F Rodriguez FV Varia R Varnes EW Varouchas D Vartapetian A Varvell KE Vassilakopoulos VI Vazeille F Vegni G Veillet JJ Vellidis C Veloso F Veness R Veneziano S Ventura A Ventura D Venturi M Venturi N Vercesi V Verducci M Verkerke W Vermeulen JC Vest A Vetterli MC Vichou I Vickey T Boeriu OEV Viehhauser GHA Viel S Villa M Perez MV Vilucchi E Vincter MG Vinek E Vinogradov VB Virchaux M Virzi J Vitells O Viti M Vivarelli I Vaque FV Vlachos S Vladoiu D Vlasak M Vlasov N Vogel A Vokac P Volpi G Volpi M Volpinia G von der Schmitt H von Loeben J von Radziewski H von Toerne E Vorobel V Vorobiev AP Vorwerk V Vos M Voss R Voss TT Vossebeld JH Vranjesa N Milosavljevic MV Vrba V Vreeswijk M Anh TV Vuillermet R Vukotic I Wagner W Wagner P Wahlen H Wakabayashi J Walbersloh J Walch S Walder J Walker R Walkowiak W Wall R Waller P Wang C Wang H Wang H Wang JJ Wang J Wang JC Wang R Wang SM Warburton A Ward CP Warsinsky M Wastie R Watkins PM Watson AT Watson MF Watts G Watts S Waugh AT Waugh BM Weber J Weber M Weber MS Weber P Weidberg AR Weige P Weingarten J Weiser C Wellenstein H Wells PS Wen M Wenaus T Wendler S Weng Z Wengler T Wenig S Wermes N Werner M Werner P Werth M Wessels M Weydert C Whalen K Wheeler Ellis SJ Whitaker SP White A White MJ Whitehead SR Whiteson D Whittington D Wicek F Wicke D Wickens FJ Wiedenmann W Wielers M Wienemann P Wiglesworth C Wiik Fuchs LAM Wijeratne PA Wildauer A Wildt MA Wilhelm I Wilkens HG Will JZ Williams E Williams HH Willis W Willocq S Wilson JA Wilson MG Wilson A Wingerter Seez I Winkelmann S Winklmeier F Wittgen M Wolter MW Woltersa H Wong WC Wooden G Wosiek BK Wotschack J Woudstra MJ Wozniak KW Wraight K Wright C Wright M Wrona B Wu SL Wu X Wu Y Wulf E Wunstorf R Wynne BM Xella S Xiao M Xie S Xie Y Xu C Xu D Xu G Yabsley B Yacoob S Yamada M Yamaguchi H Yamamoto A Yamamoto K Yamamoto S Yamamura T Yamanaka T Yamaoka J Yamazaki T Yamazaki Y Yan Z Yang H Yang UK Yang Y Yang Y Yang Z Yanush S Yao Y Yasu Y Smit GVY Ye J Ye S Yilmaz M Yoosoofmiya R Yorita K Yoshida R Young C Youssef S Yu D Yu J Yu J Yuan L Yurkewicz A Zabinski B Zaets VG Zaidan R Zaitsev AM Zajacova Z Zalite YK Zanello L Zarzhitsky P Zaytsev A Zeitnitz C Zeller M Zeman M Zemla A Zendler C Zenin O Zenis T Zinonos Z Zenz S Zerwas D della Porta GZ Zhan Z Zhang D Zhang H Zhang J Zhang X Zhang Z Zhao L Zhao T Zhao Z Zhemchugov A Zheng S Zhong J Zhou B Zhou N Zhou Y Zhu CG Zhu H Zhu J Zhu Y Zhuang X Zhuravlov V Zieminska D Zimmermann R Zimmermann S Zimmermann S Ziolkowski M Zitoun R Zivkovic L Zmouchko VV Zobernig G Zoccoli A Zolnierowski Y Zsenei A zur Nedden M Zutshi V Zwalinski L. |
| Data di pubblicazione: | 2012 |
| Rivista: | |
| Abstract: | A measurement of the production cross-section for top quark pairs (t (t) over bar) in pp collisions at root s = 7 TeV is presented using data recorded with the ATLAS detector at the Large Hadron Collider. Events are selected in the single lepton topology by requiring an electron or muon, large missing transverse momentum and at least three jets. With a data sample of 35 pb(-1), two different multivariate methods, one of which uses b-quark jet identification while the other does not, use kinematic variables to obtain cross-section measurements of sigma(t (t) over bar) = 187 +/- 11(stat.)(-17)(+18)(syst.) +/- 6(lumi.) pb and sigma(t (t) over bar) = 173 +/- 17(stat.)(-16)(+18)(syst.) +/- 6(lumi.) pb respectively. The two measurements are in agreement with each other and with QCD calculations. The first measurement has a better a priori sensitivity and constitutes the main result of this Letter. (c) 2012 CERN. Published by Elsevier B.V. All rights reserved. |
| Handle: | http://hdl.handle.net/20.500.11770/139206 |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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