Samenvatting
We report a study of the e+e−→D+D−π+π− process using e+e− collision data samples with an integrated luminosity of 2.5fb−1 at center-of-mass energies from 4.36 to 4.60 GeV, collected with the BESIII detector at the BEPCII storage ring. The D1(2420)+ is observed in the D+π+π− mass spectrum. The mass and width of the D1(2420)+ are measured to be (2427.2±1.0stat.±1.2syst.) MeV/c2 and (23.2±2.3stat.±2.3syst.) MeV, respectively. In addition, the Born cross sections of the e+e−→D1(2420)+D−+c.c.→D+D−π+π− and e+e−→ψ(3770)π+π−→D+D−π+π− processes are measured as a function of the center-of-mass energy.
Originele taal-2 | English |
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Artikelnummer | 135395 |
Aantal pagina's | 8 |
Tijdschrift | Physics Letters B |
Volume | 804 |
DOI's | |
Status | Published - 10-mei-2020 |