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001-es BibID:	BIBFORM120920
035-os BibID:	(Scopus)85123858774 (WOS)000748745200007
Első szerző:	Bevilacqua, Giuseppe
Cím:	Modeling uncertainties of t[overline]tW^{+/-} multilepton signatures / G. Bevilacqua, H. Y. Bi, F. Febres Cordero, H. B. Hartanto, M. Kraus, J. Nasufi, L. Reina, M. Worek
Dátum:	2022
ISSN:	2470-0010 2470-0029
Megjegyzések:	In light of recent discrepancies between the modeling of t (t) over barW(+/-) signatures and measurements reported by the LHC experimental collaborations, we investigate in detail theoretical uncertainties for multilepton signatures. We compare results from the state-of-the-art full off-shell calculation and its narrow-width approximation to results obtained from the on-shell t (t) over barW(+/-) calculation, with approximate spin correlations in top-quark and W decays, matched to parton showers. In the former case double-, single-, and nonresonant contributions together with interference effects are taken into account, while the latter two cases are only based on the double-resonant top-quark contributions. The comparison is performed for the LHC at root s = 13 TeV for which we study separately the multilepton signatures as predicted from the dominant next-to-leading-order (NLO) contributions at the perturbative orders O(alpha(3)(s)alpha(6)) and O(alpha(s)alpha(8)). Furthermore, we combine both contributions and propose a simple way to approximately incorporate the full off-shell effects in the NLO computation of on-shell pp -> t[overline](t) over barW(+/-) matched to parton showers.
Tárgyszavak:	Természettudományok Fizikai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk PROTON-PROTON COLLISIONSTEV
Megjelenés:	Physical Review D. - 105 : 1 (2022), p. 1-19. -
További szerzők:	Bi, Huan-Yu Febres Cordero, F. Hartanto, Heribertus Bayu Kraus, Manfred Nasufi, Jasmina Reina, L. Worek, Malgorzata
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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