Cross section measurement of e+e−→ηψ(2S) and search for e+e−→ηX˜(3872)

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Zhang,B Y Hu,X C Lou,L J Li,M Lellmann,G Rong,W D Li,Ziyi Wang,X L Luo,J Y Liu,H Liang,Y J Wu,J Y Zhao,B H Xiang,D H Wei,Y W Fu,S Wang,T J Zhu,S N Ruan,L Xia,G Felici,Q Ouyang,Y F Lyu,A Q Guo,T J Jiang,S Wang,Y K Heng,W P Wang,P Zhang,Y Yuan,Z L Wang,K K He,H Zhang,Z Q Sun,H F Shen,J H Zou,S A Cetin,J Y Zhou,T T Han,K L He,Y Pan,R E Mitchell,S Gramigna,H Q Zhang,X L Ji,A Zhemchugov,Y Wan,A Q Zhang,B Wang,I Denysenko,L Liu,M Y Dong,Bo Wang,M Ye,R P Zhao,Besiii Collaboration ,T Li,O B Kolcu,W X Gong,Cheng Li,Y G Xie,G Rong,D Jiang,L Z Liao,G F Xu,W Kühn,K Sun,X P Xu,H H Zhang,Z Q Liu,J Zu,X L Li,J Z Zhao,X H Li,L Q Huang,S Zhou,K X Huang,B X Liu,G F Cao,S Plura,X Li,Y X Zhao,L Zhu,X T Hou,Y X Yang,J G Messchendorp,Y C Yu,C Z Yuan,X Liu,T Holtmann,Y Schelhaas,X R Lyu,L L Wang,M Kuessner,J Dong,K Peters,Y Z Zhou,R E De Boer,Q L Niu,M N Achasov,M Bertani,Y Yuan,Y L Wang,X P Qin,L Sun,Y A Tang,W M Liu,W J Zheng,H N Li,Y Liu,Z H Lu,J P Zheng,Hui Li,Y Jin,M M Ma,J F Sun,M C Du,Q X Li,Z P Xie,H.-R Bao,A Kupsc,X M Zhang,R A Briere,Bo Wang,X Kui,Y P Lu,C F Xu,F Feldbauer,T Johansson,S H Zhang,X T Chen,Y Tian,H Y Xu,X Kui,K Li,A Q Zhang,B Moses,L G Shao,C F Xu,V Thoren,H Ma,N Y Wang

doi:10.1103/physrevd.109.112004

Cross section measurement of e+e−→ηψ(2S) and search for e+e−→ηX˜(3872)

M Ablikim, Y F Wang + Show 857 more

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https://doi.org/10.1103/physrevd.109.112004

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Journal: Physical Review D	Publication Date: Jun 5, 2024
Citations: 1	License type: CC BY 4.0

#Mass Distribution #Data Samples + Show 7 more

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Abstract

The energy-dependent cross section for e+e−→ηψ(2S) is measured at 18 center of mass energies from 4.288 to 4.951 GeV using the BESIII detector. Using the same data samples, we also perform the first search for the reaction e+e−→ηX˜(3872), but no evidence is found for the X˜(3872) in the π+π−J/ψ mass distribution. At each of the 18 center of mass energies, upper limits at the 90% confidence level on the cross section for e+e−→ηψ(2S) and on the product of the e+e−→ηX˜(3872) cross section with the branching fraction of X˜(3872)→π+π−J/ψ are reported. Published by the American Physical Society 2024

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