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

Bibliographical note

Funding Information:
This work was conducted under the Strategic Research Scholarship funded by the Central Queensland University, Australia. The authors would like to acknowledge Mr. Tim Mc Sweeney, Adjunct Research Fellow at Central Queensland University, Australia for his contribution in English proof reading of this article.

Publisher Copyright:
© 2020


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