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A measurement is presented of the tt¯ production cross section (σtt¯) in proton-proton collisions at a centre-of-mass energy of 7 TeV, in the all-jet final state that contains at least six jets, two of which are tagged as originating from b quarks. The data correspond to an integrated luminosity of 3.54 fb−1, collected with the CMS detector at the LHC. The cross section is determined through an unbinned maximum likelihood fit of background and tt¯ signal to the reconstructed mass spectrum of tt¯ candidates in the data, in which events are subjected to a kinematic fit assuming a tt¯→W+bW−b¯¯¯→6 jets hypothesis. The measurement yields σtt¯=139±10(stat.)±26(syst.)±3(lum.)pb , a result consistent with those obtained in other tt¯ decay channels, as well as with predictions of the standard model.
S. Chatrchyan, V. Khachatryan, A. M. Sirunyan, A. Tumasyan, W. Adam, E. Aguilo, et al. (2013). Measurement of the t\bar t production cross section in the all-jet final state in pp collisions at sqrt{s}=7 TeV. JOURNAL OF HIGH ENERGY PHYSICS, 1305, 065-89 [10.1007/JHEP05(2013)065].
Measurement of the t\bar t production cross section in the all-jet final state in pp collisions at sqrt{s}=7 TeV
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Sheldon;B. Snook;S. Tuo;J. Velkovska;M. W. Arenton;M. Balazs;S. Boutle;B. Cox;B. Francis;J. Goodell;R. Hirosky;A. Ledovskoy;C. Lin;C. Neu;J. Wood;R. Yohay;S. Gollapinni;R. Harr;P. E. Karchin;C. Kottachchi Kankanamge Don;P. Lamichhane;A. Sakharov;M. Anderson;D. A. Belknap;L. Borrello;D. Carlsmith;M. Cepeda;S. Dasu;E. Friis;L. Gray;K. S. Grogg;M. Grothe;R. Hall Wilton;M. Herndon;A. Hervé;P. Klabbers;J. Klukas;A. Lanaro;C. Lazaridis;J. Leonard;R. Loveless;A. Mohapatra;I. Ojalvo;F. Palmonari;G. A. Pierro;I. Ross;A. Savin;W. H. Smith;J. Swanson
2013
Abstract
A measurement is presented of the tt¯ production cross section (σtt¯) in proton-proton collisions at a centre-of-mass energy of 7 TeV, in the all-jet final state that contains at least six jets, two of which are tagged as originating from b quarks. The data correspond to an integrated luminosity of 3.54 fb−1, collected with the CMS detector at the LHC. The cross section is determined through an unbinned maximum likelihood fit of background and tt¯ signal to the reconstructed mass spectrum of tt¯ candidates in the data, in which events are subjected to a kinematic fit assuming a tt¯→W+bW−b¯¯¯→6 jets hypothesis. The measurement yields σtt¯=139±10(stat.)±26(syst.)±3(lum.)pb , a result consistent with those obtained in other tt¯ decay channels, as well as with predictions of the standard model.
S. Chatrchyan, V. Khachatryan, A. M. Sirunyan, A. Tumasyan, W. Adam, E. Aguilo, et al. (2013). Measurement of the t\bar t production cross section in the all-jet final state in pp collisions at sqrt{s}=7 TeV. JOURNAL OF HIGH ENERGY PHYSICS, 1305, 065-89 [10.1007/JHEP05(2013)065].
S. Chatrchyan;V. Khachatryan;A. M. Sirunyan;A. Tumasyan;W. Adam;E. Aguilo;T. Bergauer;M. Dragicevic;J. Erö;C. Fabjan;M. Friedl;R. Frühwirth;V. M. Ghet...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/231673
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simulazione ASN
Il report seguente simula gli indicatori relativi alla propria produzione scientifica in relazione alle soglie ASN 2023-2025 del proprio SC/SSD. Si ricorda che il superamento dei valori soglia (almeno 2 su 3) è requisito necessario ma non sufficiente al conseguimento dell'abilitazione. La simulazione si basa sui dati IRIS e sugli indicatori bibliometrici alla data indicata e non tiene conto di eventuali periodi di congedo obbligatorio, che in sede di domanda ASN danno diritto a incrementi percentuali dei valori. La simulazione può differire dall'esito di un’eventuale domanda ASN sia per errori di catalogazione e/o dati mancanti in IRIS, sia per la variabilità dei dati bibliometrici nel tempo. Si consideri che Anvur calcola i valori degli indicatori all'ultima data utile per la presentazione delle domande.
La presente simulazione è stata realizzata sulla base delle specifiche raccolte sul tavolo ER del Focus Group IRIS coordinato dall’Università di Modena e Reggio Emilia e delle regole riportate nel DM 589/2018 e allegata Tabella A. Cineca, l’Università di Modena e Reggio Emilia e il Focus Group IRIS non si assumono alcuna responsabilità in merito all’uso che il diretto interessato o terzi faranno della simulazione. Si specifica inoltre che la simulazione contiene calcoli effettuati con dati e algoritmi di pubblico dominio e deve quindi essere considerata come un mero ausilio al calcolo svolgibile manualmente o con strumenti equivalenti.