The process e+e-→φη is studied at 22 center-of-mass energy points (s) between 2.00 and 3.08 GeV using 715 pb-1 of data collected with the BESIII detector. The measured Born cross section of e+e-→φη is found to be consistent with BABAR measurements, but with improved precision. A resonant structure around 2.175 GeV is observed with a significance of 6.9σ with mass (2163.5±6.2±3.0) MeV/c2 and width (31.1-11.6+21.1±1.1) MeV, where the first uncertainties are statistical and the second are systematic.
Study of the process e+e- →φη at center-of-mass energies between 2.00 and 3.08 GeV
I. Garzia;M. Scodeggio;
2021
Abstract
The process e+e-→φη is studied at 22 center-of-mass energy points (s) between 2.00 and 3.08 GeV using 715 pb-1 of data collected with the BESIII detector. The measured Born cross section of e+e-→φη is found to be consistent with BABAR measurements, but with improved precision. A resonant structure around 2.175 GeV is observed with a significance of 6.9σ with mass (2163.5±6.2±3.0) MeV/c2 and width (31.1-11.6+21.1±1.1) MeV, where the first uncertainties are statistical and the second are systematic.File in questo prodotto:
File | Dimensione | Formato | |
---|---|---|---|
PhysRevD.104.032007.pdf
accesso aperto
Descrizione: versione editoriale
Tipologia:
Full text (versione editoriale)
Licenza:
Creative commons
Dimensione
535.4 kB
Formato
Adobe PDF
|
535.4 kB | Adobe PDF | Visualizza/Apri |
I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.