The first full amplitude analysis of B+ -> J/psi phi K+ with J/psi -> mu(+)mu(-) phi -> K+K- decays is performed with a data sample of 3 fb(-1) of pp collision data collected at root s = 7, 8 TeV with the LHCb detector. The data cannot be described by a model that contains only excited kaon states decaying into phi K+ , four J/psi phi structures are observed each with significance over 5 standard deviations. The quantum numbers of these structures are determined with significance of at least 4 standard deviations. The lightest has mass consistent with but width much larger than previous measurements of the claimed X(4140) state.

Observation of J/psi phi Structures Consistent with Exotic States from Amplitude Analysis of B+ -> J/psi phi K+ Decays

Bonivento W.;Dettori F.;Lai A.;Manca G.;Oldeman R.;Saitta B.;
2017-01-01

Abstract

The first full amplitude analysis of B+ -> J/psi phi K+ with J/psi -> mu(+)mu(-) phi -> K+K- decays is performed with a data sample of 3 fb(-1) of pp collision data collected at root s = 7, 8 TeV with the LHCb detector. The data cannot be described by a model that contains only excited kaon states decaying into phi K+ , four J/psi phi structures are observed each with significance over 5 standard deviations. The quantum numbers of these structures are determined with significance of at least 4 standard deviations. The lightest has mass consistent with but width much larger than previous measurements of the claimed X(4140) state.
File in questo prodotto:
File Dimensione Formato  
PhysRevLett.118.022003.pdf

accesso aperto

Tipologia: versione editoriale
Dimensione 379.31 kB
Formato Adobe PDF
379.31 kB 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/11584/240343
Citazioni
  • ???jsp.display-item.citation.pmc??? 2
  • Scopus 170
  • ???jsp.display-item.citation.isi??? 137
social impact