000			02310nab a2200325 c 4500
001			vtls000581603
003			RU-ToGU
005			20210922092536.0
007			cr |
008			170907|2016 gw s a eng d
024	7		_a10.1140/epjc/s10052-016-3876-4 _2doi
035			_ato000581603
040			_aRU-ToGU _brus _cRU-ToGU
245	1	0	_aSearch for single top-quark production via flavour-changing neutral currents at 8 TeV with the ATLAS detector _cG. Aad, B. Abbott, J. Abdallah [et al.]
504			_aБиблиогр.: 91 назв.
520	3		_aA search for single top-quark production via flavour-changing neutral current processes from gluon plus up- or charm-quark initial states in proton–proton collisions at the LHC is presented. Data collected with the ATLAS detector in 2012 at a centre-of-mass energy of 8 TeV and corresponding to an integrated luminosity of 20.3 fb−1 are used. Candidate events for a top quark decaying into a lepton, a neutrino and a jet are selected and classified into signal- and background-like candidates using a neural network. No signal is observed and an upper limit on the production cross-section multiplied by the t→Wb branching fraction is set. The observed 95 % CL limit is σqg→t×B(t→Wb)<3.4pb and the expected 95 % CL limit is σqg→t×B(t→Wb)<2.9pb. The observed limit can be interpreted as upper limits on the coupling constants of the flavour-changing neutral current interactions divided by the scale of new physics κugt/Λ<5.8×10−3TeV−1 and κcgt/Λ<13×10−3TeV and on the branching fractions B(t→ug)<4.0×10−5 and B(t→cg)<20×10−5.
653			_aATLAS, детектор
653			_aБольшой адронный коллайдер
653			_aкварки
655		4	_aстатьи в журналах _9745982
700	1		_aAbbott, B. _9116041
700	1		_aAbdallah, J. _9116040
700	1		_aChelkov, G. A. _996983
700	1		_aAad, G. _9116039
773	0		_tThe European physical journal C _d2016 _gVol. 76, № 2. P. 55 (1-30) _x1434-6044
852	4		_aRU-ToGU
856	7		_uhttp://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000581603
908			_aстатья
999			_c426133