A measurement is presented for the electroweak production of a W boson, a photon (γ), and two jets (j) in proton-proton collisions. The leptonic decay of the W boson is selected by requiring one identified electron or muon and large missing transverse momentum. The two jets are required to have large invariant dijet mass and large separation in pseudorapidity. The measurement is performed with the data collected by the CMS detector at a center-of-mass energy of 13  TeV, corresponding to an integrated luminosity of 138  fb−1. The cross section for the electroweak Wγjj production is 23.5+4.9−4.7  fb, whereas the total cross section for Wγjj production is 113±13  fb. Differential cross sections are also measured with the distributions unfolded to the particle level. All results are in agreement with the standard model expectations. Constraints are placed on anomalous quartic gauge couplings (aQGCs) in terms of dimension-8 effective field theory operators. These are the most stringent limits to date on the aQGCs parameters fM,2–5/Λ4 and fT,6–7/Λ4.

Measurement of the electroweak production of W gamma in association with two jets in proton-proton collisions at sqrt(s) = 13 TeV

CANDELISE, V.;DA ROLD, A.;DELLA RICCA, G.;SORRENTINO, G.;
2023-01-01

Abstract

A measurement is presented for the electroweak production of a W boson, a photon (γ), and two jets (j) in proton-proton collisions. The leptonic decay of the W boson is selected by requiring one identified electron or muon and large missing transverse momentum. The two jets are required to have large invariant dijet mass and large separation in pseudorapidity. The measurement is performed with the data collected by the CMS detector at a center-of-mass energy of 13  TeV, corresponding to an integrated luminosity of 138  fb−1. The cross section for the electroweak Wγjj production is 23.5+4.9−4.7  fb, whereas the total cross section for Wγjj production is 113±13  fb. Differential cross sections are also measured with the distributions unfolded to the particle level. All results are in agreement with the standard model expectations. Constraints are placed on anomalous quartic gauge couplings (aQGCs) in terms of dimension-8 effective field theory operators. These are the most stringent limits to date on the aQGCs parameters fM,2–5/Λ4 and fT,6–7/Λ4.
2023
Pubblicato
https://journals.aps.org/prd/abstract/10.1103/PhysRevD.108.032017
File in questo prodotto:
File Dimensione Formato  
PhysRevD.108.032017.pdf

accesso aperto

Tipologia: Documento in Versione Editoriale
Licenza: Creative commons
Dimensione 4.08 MB
Formato Adobe PDF
4.08 MB Adobe PDF Visualizza/Apri
Pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11368/3056018
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? ND
social impact