A measurement is presented of the t¯t inclusive production cross section in pp collisions at a center-ofmass energy of ffisffiffi p ¼ 8 TeV using data collected by the ATLAS detector at the CERN Large Hadron Collider. The measurement was performed in the lepton þ jets final state using a data set corresponding to an integrated luminosity of 20.3 fb−1. The cross section was obtained using a likelihood discriminant fit and b-jet identification was used to improve the signal-to-background ratio. The inclusive t¯t production cross section was measured to be 260 1ðstatÞþ22−23 ðstatÞ 8ðlumiÞ 4ðbeamÞ pb assuming a top-quark mass of 172.5 GeV, in good agreement with the theoretical prediction of 253 þ13−15 pb. The t¯t → ðe; μÞ þ jets production cross section in the fiducial region determined by the detector acceptance is also reported.

Measurement of the top pair production cross section in 8 TeV proton-proton collisions using kinematic information in the lepton plus jets final state with ATLAS / Aad, G., Abbott, B., Abdallag, J., Kjalek, S.A., Abdinov, O., Aben, R., Abi, B., Abolins, M., Abouzwid, O.S., Abreamowicz, H., Abreu, H., Abreu, R., Abulaiti, Y., Acharya, B.S., Adamczyk, L., Admas, D.L., Adelman, J., Adomeit, S., Adye, T., Agatonovic Jovin, T., et al.. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - STAMPA. - 91:11(2015). [10.1103/PhysRevD.91.112013]

Measurement of the top pair production cross section in 8 TeV proton-proton collisions using kinematic information in the lepton plus jets final state with ATLAS

Artoni, G.;BAGNAIA, Paolo;BAUCE, MATTEO;BINI, Cesare;DE CECCO, Sandro;DI DOMENICO, Antonio;GAUZZI, Paolo;GENTILE, Simonetta;GIAGU, Stefano;Kado, M.;LACAVA, Francesco;LUCI, Claudio;MESSINA, Andrea;Policicchio, A.;
2015

Abstract

A measurement is presented of the t¯t inclusive production cross section in pp collisions at a center-ofmass energy of ffisffiffi p ¼ 8 TeV using data collected by the ATLAS detector at the CERN Large Hadron Collider. The measurement was performed in the lepton þ jets final state using a data set corresponding to an integrated luminosity of 20.3 fb−1. The cross section was obtained using a likelihood discriminant fit and b-jet identification was used to improve the signal-to-background ratio. The inclusive t¯t production cross section was measured to be 260 1ðstatÞþ22−23 ðstatÞ 8ðlumiÞ 4ðbeamÞ pb assuming a top-quark mass of 172.5 GeV, in good agreement with the theoretical prediction of 253 þ13−15 pb. The t¯t → ðe; μÞ þ jets production cross section in the fiducial region determined by the detector acceptance is also reported.
2015
jets; production; parton shower
01 Pubblicazione su rivista::01a Articolo in rivista
Measurement of the top pair production cross section in 8 TeV proton-proton collisions using kinematic information in the lepton plus jets final state with ATLAS / Aad, G., Abbott, B., Abdallag, J., Kjalek, S.A., Abdinov, O., Aben, R., Abi, B., Abolins, M., Abouzwid, O.S., Abreamowicz, H., Abreu, H., Abreu, R., Abulaiti, Y., Acharya, B.S., Adamczyk, L., Admas, D.L., Adelman, J., Adomeit, S., Adye, T., Agatonovic Jovin, T., et al.. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - STAMPA. - 91:11(2015). [10.1103/PhysRevD.91.112013]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/839730
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