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The top-quark pair production cross section in 7 TeV center-of-mass energy proton-proton collisions is measured using data collected by the CMS detector at the LHC. The measurement uses events with one jet identified as a hadronically decaying tau lepton and at least four additional energetic jets, at least one of which is identified as coming from a b quark. The analyzed data sample corresponds to an integrated luminosity of 3.9 fb(-1) recorded by a dedicated multijet plus hadronically decaying tau trigger. A neural network has been developed to separate the top-quark pairs from the W + jets and multijet backgrounds. The measured value of sigma(t (t) over bar) = 152 +/- 12 (stat.) +/- 32 (syst.) +/- 3 (lum.) pb is consistent with the standard model predictions.
The top-quark pair production cross section in 7 TeV center-of-mass energy proton-proton collisions is measured using data collected by the CMS detector at the LHC. The measurement uses events with one jet identified as a hadronically decaying tau lepton and at least four additional energetic jets, at least one of which is identified as coming from a b quark. The analyzed data sample corresponds to an integrated luminosity of 3.9 fb(-1) recorded by a dedicated multijet plus hadronically decaying tau trigger. A neural network has been developed to separate the top-quark pairs from the W + jets and multijet backgrounds. The measured value of sigma(t (t) over bar) = 152 +/- 12 (stat.) +/- 32 (syst.) +/- 3 (lum.) pb is consistent with the standard model predictions.
Titolo: | Measurement of the t(t)over-bar production cross section in the tau plus jets channel in pp collisions at root s=7 TeV | |
Autori interni: | Khachatryan V Sirunyan AM Tumasyan A Adam W Aguilo E Bergauer T Dragicevic M Eroe J Fabjan C Friedl M Fruehwirth R Ghete VM Hoermann N Hrubec J Jeitler M Kiesenhofer W Knuenz V Krammer M Kraetschmer I Liko D Mikulec I Pernicka M Rabady D Rahbaran B Rohringer C Rohringer H Schoefbeck R Strauss J Taurok A Waltenberger W Wulz CE Mossolov V Shumeiko N Gonzalez JS Bansal M Bansal S Cornelis T De Wolf EA Janssen X Luyckx S Mucibello L Ochesanu S Roland B Rougny R Selvaggi M Van Haevermaet H Van Mechelen P Van Remortel N Van Spilbeeck A Blekman F Blyweert S D'Hondt J Suarez RG Kalogeropoulos A Maes M Olbrechts A Tavernier S Van Doninck W Van Mulders P Van Onsem GP Villella I Clerbaux B De Lentdecker G Dero V Gay APR Hreus T Leonard A Marage PE Mohammadi A Reis T Thomas L Vander Velde C Vanlaer P Wang J Adler V Beernaert K Cimmino A Costantini S Garcia G Grunewald M Klein B Lellouch J Marinov A Mccartin J Rios AAO Ryckbosch D Sigamani M Strobbe N Thyssen F Tytgat M Walsh S 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Klute M Krajczar K Levin A Luckey PD Ma T Nahn S Paus C Ralph D Roland C Roland G Rudolph M Stephans GSF Stockli F Sumorok K Sung K Velicanu D Wenger EA Wolf R Wyslouch B Yang M Yilmaz Y Yoon AS Zanetti M Zhukova V Cooper SI Dahmes B De Benedetti A Franzoni G Gude A Kao SC Klapoetke K Kubota Y Mans J Pastika N Rusack R Sasseville M Singovsky A Tambe N Turkewitz J Cremaldi LM Kroeger R Perera L Rahmat R Sanders DA Avdeeva E Bloom K Bose S Claes DR Dominguez A Eads M Keller J Kravchenko I Lazo Flores J Malik S Snow GR Godshalk A Iashvili I Jain S Kharchilava A Kumar A Rappoccio S Alverson G Barberis E Baumgartel D Chasco M Haley J Nash D Orimoto T Trocino D Wood D Zhang J Anastassov A Hahn KA Kubik A Lusito L Mucia N Odell N Ofierzynski RA Pollack B Pozdnyakov A Schmitt M Stoynev S Velasco M Won S Antonelli L Berry D Brinkerhoff A Chan KM Hildreth M Jessop C Karmgard DJ Kolb J Lannon K Luo W Lynch S Marinelli N Morse DM Pearson T Planer M Ruchti R Slaunwhite J Valls N Wayne M Wolf M Bylsma B Durkin LS Hill C Hughes R Kotov K Ling TY Puigh D Rodenburg M Vuosalo C Williams G Winer BL Berry E Elmer P Halyo V Hebda P Hegeman J Hunt A Jindal P Koay SA Pegna DL Lujan P Marlow D Medvedeva T Mooney M Olsen J Piroue P Quan X Raval A Saka H Stickland D Tully C Werner JS Zenz SC Zuranski A Brownson E Lopez A Mendez H Vargas JER Alagoz E Barnes VE Benedetti D Bolla G Bortoletto D De Mattia M Everett A Hu Z Jones M Koybasi O Kress M Laasanen AT Leonardo N Maroussov V Merkel P Miller DH Neumeister N Shipsey I Silvers D Svyatkovskiy A Marono MV Yoo HD Zablocki J Zheng Y Guragain S Parashar N Adair A Akgun B Boulahouache C Ecklund KM Geurts FJM Li W Padley BP Redjimi R Roberts J Zabel J Betchart B Bodek A Chung YS Covarelli R de Barbaro P Demina R Eshaq Y Ferbel T Garcia Bellido A Goldenzweig P Han J Harel A Miner DC Vishnevskiy D Zielinski M Bhatti A Ciesielski R Demortier L Goulianos K Lungu G Malik S Mesropian C Arora S Barker A Chou JP Contreras Campana C Contreras Campana E Duggan D Ferencek D Gershtein Y Gray R Halkiadakis E Hidas D Lath A Panwalkar S Park M Patel R Rekovic V Robles J Rose K Salur S Schnetzer S Seitz C Somalwar S Stone R Thomas S Walker M Cerizza G Hollingsworth M Spanier S Yang ZC York A Eusebi R Flanagan W Gilmore J Kamon T Khotilovich V Montalvo R Osipenkov I Pakhotin Y Perloff A Roe J Safonov A Sakuma T Sengupta S Suarez I Tatarinov A Toback D Akchurin N Damgov J Dragoiu C Dudero PR Jeong C Kovitanggoon K Lee SW Libeiro T Volobouev I Appelt E Delannoy AG Florez C Greene S Gurrola A Johns W Kurt P Maguire C Melo A Sharma M Sheldon P Snook B Tuo S Velkovska J Arenton MW Balazs M Boutle S Cox B Francis B Goodell J Hirosky R Ledovskoy A Lin C Neu C Wood J Gollapinni S Harr R Karchin PE Don CKK Lamichhane P Sakharov A Anderson M Belknap DA Borrello L Carlsmith D Cepeda M Dasu S Friis E Gray L Grogg KS Grothe M Hall Wilton R Herndon M Herve A Klabbers P Klukas J Lanaro A Lazaridis C Loveless R Mohapatra A Mozer MU Ojalvo I Palmonari F Pierro GA Ross I Savin A Smith WH Swanson J. | |
Data di pubblicazione: | 2013 | |
Rivista: | ||
Abstract: | The top-quark pair production cross section in 7 TeV center-of-mass energy proton-proton collisions is measured using data collected by the CMS detector at the LHC. The measurement uses events with one jet identified as a hadronically decaying tau lepton and at least four additional energetic jets, at least one of which is identified as coming from a b quark. The analyzed data sample corresponds to an integrated luminosity of 3.9 fb(-1) recorded by a dedicated multijet plus hadronically decaying tau trigger. A neural network has been developed to separate the top-quark pairs from the W + jets and multijet backgrounds. The measured value of sigma(t (t) over bar) = 152 +/- 12 (stat.) +/- 32 (syst.) +/- 3 (lum.) pb is consistent with the standard model predictions. | |
Handle: | http://hdl.handle.net/20.500.11769/14158 | |
Appare nelle tipologie: | 1.1 Articolo in rivista |
File in questo prodotto:
http://hdl.handle.net/20.500.11769/14158
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