Study of e+e → D+Dπ+π at center-of-mass energies from 4.36 to 4.60 GeV

BESIII Collaboration

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We report a study of the e+e→D+Dπ+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+Dπ+π and e+e→ψ(3770)π+π→D+Dπ+π processes are measured as a function of the center-of-mass energy.

Original languageEnglish (US)
Article number135395
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
StatePublished - May 10 2020

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