Production of the doubly charged Δ baryon in e+e− annihilation at energies from 2.3094 to 2.6464 GeV
M. Ablikim,М. Н. Ачасов,P. Adlarson,R. Aliberti,A. Amoroso,M. R. An,Q. An,Y. Bai,O. Bakina,R. Baldini Ferroli,I. Balossino,Y. Ban,V. Batozskaya,D. Becker,K. Begzsuren,N. Berger,M. Bertani,D. Bettoni,F. Bianchi,E. Bianco,J. Bloms,A. Bortone,I. R. Boyko,R. A. Briere,A. Brueggemann,H. Cai,X. Cai,A. Calcaterra,G. F. Cao,N. Cao,S. A. Çetin,J. F. Chang,W. L. Chang,G. R.,G. Chelkov,C. Chen,Chao Chen,G. Chen,H. S. Chen,M. L. Chen,S. J. Chen,S. M. Chen,T. Chen,X. R. Chen,X. T. Chen,Y. B. Chen,Y. Q. Chen,Z. J. Chen,W. S. Cheng,S. K. Choi,X. K. Chu,G. Cibinetto,S. C. Coen,F. Cossio,J. J. Cui,H. L. Dai,J. P. Dai,A. Dbeyssi,R. E. de Boer,D. Dedovich,Z. Y. Deng,A. Denig,I. Denysenko,M. Destefanis,F. De Mori,Y. Ding,Y. Ding,J. Dong,L. Y. Dong,M. Y. Dong,X. Dong,S. X. Du,Zhe Duan,P. Egorov,Y. L. Fan,J. Fang,S. S. Fang,W. Fang,Y. Fang,R. Farinelli,L. Fava,F. Feldbauer,G. Felici,C. Q. Feng,J. H. Feng,K. M. Fischer,M. Fritsch,C. Fritzsch,C. D. Fu,Y. Fu,He Gao,Yang Gao,Yang Gao,S. Garbolino,I. Garzia,P. Ge,Z. W. Ge,Chao–Qiang Geng,E. Gersabeck,A. Gilman,K. Goetzen,L. Gong,W. X. Gong,W. Gradl,M. Greco,M. H. Gu,Y. T. Gu,C. Y. Guan,Z. L. Guan,A. Q. Guo,L. B. Guo,R. P. Guo,Y. P. Guo,A. Guskov,X. T. H.,W. Y. Han,X. Q. Hao,F. A. Harris,K. K. He,K. L. He,F. H. Heinsius,C. Heinz,Y. K. Heng,C. Herold,T. Holtmann,G. Y. Hou,Y. R. Hou,Z. L. Hou,H. M. Hu,J. Hu,T. Hu,Y. Hu,G. S. Huang,K. X. Huang,L. Q. Huang,X. T. Huang,Y. Huang,T. Hussain,N. Hüsken,W. Imoehl,M. Irshad,J. Jackson,S. Jaeger,S. Janchiv,E.-J. Jang,J. H. Jeong,Q. P. Ji,Q. Ji,X. B. Ji,X. L. Ji,Y. Y. Ji,Z. K. Jia,P. C. Jiang,S. S. Jiang,T. J. Jiang,X. S. Jiang,Y. Jiang,J. B. Jiao,Z. Jiao,S. Jin,Y. Jin,M. Q. Jing,T. Johansson,X. K.,S. Kabana,N. Kalantar‐Nayestanaki,X. L. Kang,X. S. Kang,R. Kappert,M. Kavatsyuk,B. C. Ke,A. Khoukaz,R. Kiuchi,R. Kliemt,L. Koch,O. B. Kolcu,B. Kopf,M. Kuessner,A. Kupść,W. Kühn,J. J. Lane,J. S. Lange,P. Larin,A. Lavania,L. Lavezzi,Lei Tang,Z. H. Lei,H. Leithoff,M. Lellmann,T. Lenz,C. Li,C. Li,C. H. 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H. Zou,J. Zu
Physical review（2023）
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摘要
The processes e+e−→Δ++Δ¯−− and e+e−→Δ++p¯π−+c.c. are studied for the first time with 179 pb−1 of e+e− annihilation data collected with the BESIII detector at center-of-mass energies from 2.3094 to 2.6464 GeV. No significant signal for the e+e−→Δ++Δ¯−− process is observed and the upper limit of the Born cross section is estimated at each energy point. For the process e+e−→Δ++p¯π−+c.c., a significant signal is observed at center-of-mass energies near 2.6454 GeV and the corresponding Born cross section is reported.Received 23 May 2023Accepted 15 September 2023DOI:https://doi.org/10.1103/PhysRevD.108.072010Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.Published by the American Physical SocietyPhysics Subject Headings (PhySH)Research AreasForm factorsPhysical SystemsBaryonsTechniquesParticle decaysParticle productionParticles & Fields
