Using data collected with the BESIII detector operating at the Beijing Electron Positron Collider, we search for the process e+e-→ηcηπ+π-. The search is performed using five large datasets recorded at center-of-mass energies of 4.23, 4.26, 4.36, 4.42, and 4.60 GeV. The ηc meson is reconstructed in 16 exclusive decay modes. No signal is observed in the ηc mass region at any center-of-mass energy. The upper limits on the reaction cross sections are determined to be 6.2, 10.8, 27.6, 22.6 and 23.7 pb at the 90% confidence level at the center-of-mass energies listed above.
Search for the reaction channel e+e−→ηcηπ+π− at center-of-mass energies from 4.23 to 4.60 GeV
Garzia, I.;
2021
Abstract
Using data collected with the BESIII detector operating at the Beijing Electron Positron Collider, we search for the process e+e-→ηcηπ+π-. The search is performed using five large datasets recorded at center-of-mass energies of 4.23, 4.26, 4.36, 4.42, and 4.60 GeV. The ηc meson is reconstructed in 16 exclusive decay modes. No signal is observed in the ηc mass region at any center-of-mass energy. The upper limits on the reaction cross sections are determined to be 6.2, 10.8, 27.6, 22.6 and 23.7 pb at the 90% confidence level at the center-of-mass energies listed above.File in questo prodotto:
File | Dimensione | Formato | |
---|---|---|---|
PhysRevD.103.032004.pdf
accesso aperto
Descrizione: versione editoriale
Tipologia:
Full text (versione editoriale)
Licenza:
Creative commons
Dimensione
346.13 kB
Formato
Adobe PDF
|
346.13 kB | Adobe PDF | Visualizza/Apri |
I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.