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001-es BibID:	BIBFORM121451
035-os BibID:	(WoS)001116685900001 (Scopus)85183805784
Első szerző:	CMS Collaboration
Cím:	Search for Z' bosons decaying to pairs of heavy Majorana neutrinos in proton-proton collisions at root{s} = 13 TeV / CMS Collaboration
Dátum:	2023
ISSN:	1126-6708 1029-8479
Megjegyzések:	A search for the production of pairs of heavy Majorana neutrinos (N-& ell;) from the decays of Z' bosons is performed using the CMS detector at the LHC. The data were collected in proton-proton collisions at a center-of-mass energy of root s = 13 TeV, with an integrated luminosity of 138 fb(-1). The signature for the search is an excess in the invariant mass distribution of the final-state objects, two same-flavor leptons (e or mu) and at least two jets. No significant excess of events beyond the expected background is observed. Upper limits at 95% confidence level are set on the product of the Z' production cross section and its branching fraction to a pair of N-& ell;, as functions of N-& ell; and Z' boson masses (m(N & ell;) and m(Z'), respectively) for m(Z') from 0.4 to 4.6 TeV and m(N & ell;) from 0.1 TeV to m(Z')/2. In the theoretical framework of a left-right symmetric model, exclusion bounds in the m(N & ell;)-m(Z ') plane are presented in both the electron and muon channels. The observed upper limit on m(Z') reaches up to 4.42 TeV. These are the most restrictive limits to date on the mass of N as a function of the Z' boson mass.
Tárgyszavak:	Természettudományok Fizikai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk Beyond Standard Model Hadron-Hadron Scattering
Megjelenés:	Journal of High Energy Physics. - 2023 : 11 (2023), p. 1-44. -
További szerzők:	Bartók Márton (fizikus) Karancsi János (1987-) (fizikus) Raics Péter (1944-) (fizikus) Ujvári Balázs (1977-) (fizikus)
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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