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Measurements of the pp -> W-+/-gamma gamma and pp -> Z gamma gamma cross sections at root s=13 TeV and limits on anomalous quartic gauge couplings

Abstract: ABSTRACT: The cross section for W or Z boson production in association with two photons is measured in proton-proton collisions at a centre-of-mass energy of 13 TeV. The data set corresponds to an integrated luminosity of 137 fb?1 collected by the CMS experiment at the LHC. The W ? ?? and Z ? ?? decay modes (where ? = e, ?) are used to extract the W?? and Z?? cross sections in a phase space defined by electron (muon) with transverse momentum larger than 30 GeV and photon transverse momentum larger than 20 GeV. All leptons and photons are required to have absolute pseudorapidity smaller than 2.5. The measured cross sections in this phase space are ?(W??) = 13.6+1.9?1.9(stat)+4.0?4.0(syst) ± 0.08 (PDF + scale) fb and ?(Z??) = 5.41+0.58?0.55(stat)+0.64?.070(syst) ± 0.06 (PDF + scale) fb. Limits on anomalous quartic gauge couplings are set in the framework of an effective field theory with dimension-8 operators.

Otras publicaciones de la misma revista o congreso con autores/as de la Universidad de Cantabria

Fuente: Journal of High Energy Physics, Vol. 2021, Num.10, Art. Num. 174

Editorial: Springer Verlag

Fecha de publicación: 21/10/2021

Nº de páginas: 39

Tipo de publicación: Artículo de Revista

ISSN: 1126-6708,1029-8479

Url de la publicación: https://doi.org/10.1007/JHEP10(2021)174

Autores/as

TUMASYAN, A.

MARCOS FERNANDEZ GARCIA

PEDRO JOSE FERNANDEZ MANTECA

ANDREA GARCIA ALONSO

CEDRIC GERALD PRIEELS