Measurement of the e+e- →ωπ0π0 cross section at center-of-mass energies from 2.0 to 3.08 GeV

BESIII Collaboration

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Abstract

The cross section of the process e+e-→ωπ0π0 is measured at nineteen center-of-mass energies from 2.0 to 3.08 GeV using data collected with the BESIII detector at the BEPCII storage ring. A resonant structure around 2.20 GeV is observed with statistical significance larger than 5σ. Using a coherent fit to the cross section line shape, the mass and width are determined to be M=2222±7±2 MeV/c2 and Γ=59±30±6 MeV, respectively, where the first uncertainties are statistical and the second ones are systematic.

Original languageEnglish
Article number032005
JournalPhysical Review D
Volume105
Issue number3
DOIs
Publication statusPublished - 1 Feb 2022

OECD FOS+WOS

  • 1.03 PHYSICAL SCIENCES AND ASTRONOMY
  • 1.03.BU ASTRONOMY & ASTROPHYSICS

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