About: Measurement of the t-channel single top-quark production cross section in pp collisions at root s=7 TeV with the ATLAS detectorr

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About: Measurement of the t-channel single top-quark production cross section in pp collisions at root s=7 TeV with the ATLAS detectorr Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	We report a measurement of the cross section of single top-quark production in the t-channel using 1.04 fb(-1) of pp collision data at root s = 7 TeV recorded with the ATLAS detector at the LHC. Selected events feature one electron or muon, missing transverse momentum, and two or three jets, exactly one of them identified as originating from a b quark. The cross section is measured by fitting the distribution of a multivariate discriminant constructed with a neural network, yielding sigma(t) = 83 +/- 4 (stat.)(-19)(+20) (syst.) pb, which is in good agreement with the prediction of the Standard Model. Using the ratio of the measured to the theoretically predicted cross section and assuming that the top-quark-related CKM matrix elements obey the relation vertical bar V-tb vertical bar }} vertical bar V-ts vertical bar, vertical bar V-td vertical bar, the coupling strength at the W-t-b vertex is determined to be vertical bar V-tb vertical bar = 1.13(-0.13)(+0.14). If it is assumed that vertical bar V-tb vertical bar {= 1 a lower limit of vertical bar V-tb vertical bar } 0.75 is obtained at the 95% confidence level. We report a measurement of the cross section of single top-quark production in the t-channel using 1.04 fb(-1) of pp collision data at root s = 7 TeV recorded with the ATLAS detector at the LHC. Selected events feature one electron or muon, missing transverse momentum, and two or three jets, exactly one of them identified as originating from a b quark. The cross section is measured by fitting the distribution of a multivariate discriminant constructed with a neural network, yielding sigma(t) = 83 +/- 4 (stat.)(-19)(+20) (syst.) pb, which is in good agreement with the prediction of the Standard Model. Using the ratio of the measured to the theoretically predicted cross section and assuming that the top-quark-related CKM matrix elements obey the relation vertical bar V-tb vertical bar }} vertical bar V-ts vertical bar, vertical bar V-td vertical bar, the coupling strength at the W-t-b vertex is determined to be vertical bar V-tb vertical bar = 1.13(-0.13)(+0.14). If it is assumed that vertical bar V-tb vertical bar {= 1 a lower limit of vertical bar V-tb vertical bar } 0.75 is obtained at the 95% confidence level. (en)
Title	Measurement of the t-channel single top-quark production cross section in pp collisions at root s=7 TeV with the ATLAS detectorr Measurement of the t-channel single top-quark production cross section in pp collisions at root s=7 TeV with the ATLAS detectorr (en)
skos:prefLabel	Measurement of the t-channel single top-quark production cross section in pp collisions at root s=7 TeV with the ATLAS detectorr Measurement of the t-channel single top-quark production cross section in pp collisions at root s=7 TeV with the ATLAS detectorr (en)
skos:notation	RIV/61989592:15310/12:33142221!RIV13-MSM-15310___
http://linked.open...avai/riv/aktivita	I P Z
http://linked.open...avai/riv/aktivity	I, P(ED2.1.00/03.0058), P(LA08032), P(LC527), Z(MSM0021620859), Z(MSM6840770029), Z(MSM6840770039)
http://linked.open...iv/cisloPeriodika	4-5
http://linked.open...vai/riv/dodaniDat	2013
http://linked.open...aciTvurceVysledku	Nožka, Libor Hamal, Petr
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Univerzita Palackého v Olomouci / Přírodovědecká fakulta
http://linked.open...dnocenehoVysledku	148978
http://linked.open...ai/riv/idVysledku	RIV/61989592:15310/12:33142221
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	ATLAS detector, LHC, pp collisions (en)
http://linked.open.../riv/klicoveSlovo	ATLAS detector LHC pp collisions
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[4EE8271CD801]
http://linked.open...i/riv/nazevZdroje	Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics
http://linked.open...in/vavai/riv/obor	BF
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	3051 (xsd:int)
http://linked.open...vavai/riv/projekt	Regional Centre of Advanced Technologies and Materials International experiment ATLAS-CERN Center for Particle Physics
http://linked.open...UplatneniVysledku	2012
http://linked.open...v/svazekPeriodika	717
http://linked.open...iv/tvurceVysledku	Abbott, B. Abdallah, J. Aad, G. Nožka, Libor Hamal, Petr
http://linked.open...ain/vavai/riv/wos	000310863300008
http://linked.open...n/vavai/riv/zamer	Výzkum vlastností jader a subjaderných částic a jejich interakcí Matematické, počítačové a experimentální metody ve fyzice Fundamental Experiments in Physics of Microworld
issn	0370-2693
number of pages	21 (xsd:int)
http://bibframe.org/vocab/doi	10.1016/j.physletb.2012.09.031
http://localhost/t...ganizacniJednotka	15310

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