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001-es BibID:	BIBFORM119073
035-os BibID:	(Scopus)85066067505 (WOS)000468428300001
Első szerző:	ATLAS Collaboration
Cím:	Combinations of single-top-quark production cross-section measurements and \|f(LV)V(tb)\| determinations at root{s} = 7 and 8 TeV with the ATLAS and CMS experiments / ATLAS and CMS Collaborations
Dátum:	2019
ISSN:	1126-6708 1029-8479
Megjegyzések:	This paper presents the combinations of single-top-quark production cross-section measurements by the ATLAS and CMS Collaborations, using data from LHC proton-proton collisions at = 7 and 8 TeV corresponding to integrated luminosities of 1.17 to 5.1 fb(-1) at = 7 TeV and 12.2 to 20.3 fb(-1) at = 8 TeV. These combinations are performed per centre-of-mass energy and for each production mode: t-channel, tW, and s-channel. The combined t-channel cross-sections are 67.5 +/- 5.7 pb and 87.7 +/- 5.8 pb at = 7 and 8 TeV respectively. The combined tW cross-sections are 16.3 +/- 4.1 pb and 23.1 +/- 3.6 pb at = 7 and 8 TeV respectively. For the s-channel cross-section, the combination yields 4.9 +/- 1.4 pb at = 8 TeV. The square of the magnitude of the CKM matrix element V-tb multiplied by a form factor f(LV) is determined for each production mode and centre-of-mass energy, using the ratio of the measured cross-section to its theoretical prediction. It is assumed that the top-quark-related CKM matrix elements obey the relation \|V-td\|, \|V-ts\| << \|V-tb\|. All the \|f(LV)V(tb)\|(2) determinations, extracted from individual ratios at = 7 and 8 TeV, are combined, resulting in \|f(LV)V(tb)\| = 1.02 +/- 0.04 (meas.) +/- 0.02 (theo.). All combined measurements are consistent with their corresponding Standard Model predictions.
Tárgyszavak:	Természettudományok Fizikai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk Hadron-Hadron scattering (experiments)
Megjelenés:	Journal of High Energy Physics. - 2019 : 5 (2019), p. 1-81. -
További szerzők:	Bartók Márton (fizikus) Karancsi János (1987-) (fizikus) Raics Péter (1944-) (fizikus) Trócsányi Zoltán (1961-) (fizikus) Ujvári Balázs (1977-) (fizikus) CMS Collaboration
Pályázati támogatás:	NKFIA 123842 Egyéb
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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