The J=ψ → μþμ−μþμ− decay has been observed with a statistical significance in excess of five standard deviations. The analysis is based on an event sample of proton-proton collisions at a center-ofmass energy of 13 TeV, collected by the CMS experiment in 2018 and corresponding to an integrated luminosity of 33.6 fb−1. Normalizing to the J=ψ → μþμ− decay mode leads to a branching fraction of ½10.1 þ3.3 −2.7 ðstatÞ 0.4ðsystÞ × 10−7, a value that is consistent with the standard model prediction

Observation of the J/ψ → μ+μ-μ+μ- decay in proton-proton collisions at √s=13 TeV

Abbrescia, M.;Colaleo, A.;De Palma, M.;My, S.;Pompili, A.;Radogna, R.;Venditti, R.;
2024-01-01

Abstract

The J=ψ → μþμ−μþμ− decay has been observed with a statistical significance in excess of five standard deviations. The analysis is based on an event sample of proton-proton collisions at a center-ofmass energy of 13 TeV, collected by the CMS experiment in 2018 and corresponding to an integrated luminosity of 33.6 fb−1. Normalizing to the J=ψ → μþμ− decay mode leads to a branching fraction of ½10.1 þ3.3 −2.7 ðstatÞ 0.4ðsystÞ × 10−7, a value that is consistent with the standard model prediction
File in questo prodotto:
File Dimensione Formato  
PhysRevD.109.L111101.pdf

accesso aperto

Tipologia: Documento in Versione Editoriale
Licenza: Creative commons
Dimensione 1.01 MB
Formato Adobe PDF
1.01 MB Adobe PDF Visualizza/Apri

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/11586/498982
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 0
  • ???jsp.display-item.citation.isi??? 0
social impact