Search for Λ[over ¯]-Λ Baryon-Number-Violating Oscillations in the Decay J/ψ→pK^{-}Λ[over ¯]+c.c.
M Ablikim,M N Achasov,P Adlarson,S Ahmed,M Albrecht,R Aliberti,A Amoroso,Q An,Y Bai,O Bakina,R Baldini Ferroli,I Balossino,Y Ban,K Begzsuren,N Berger,M Bertani,D Bettoni,F Bianchi,J Bloms,A Bortone,I Boyko,R A Briere,H Cai,X Cai,A Calcaterra,G F Cao,N Cao,S A Cetin,J F Chang,W L Chang,G Chelkov,G Chen,H S Chen,M L Chen,S J Chen,X R Chen,Y B Chen,Z J Chen,W S Cheng,G Cibinetto,F Cossio,H L Dai,J P Dai,X C Dai,A Dbeyssi,R E de Boer,D Dedovich,Z Y Deng,A Denig,I Denysenko,M Destefanis,F De Mori,Y Ding,J Dong,L Y Dong,M Y Dong,X Dong,S X Du,J Fang,S S Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,C Q Feng,M Fritsch,C D Fu,Y N Gao,Ya Gao,Yang Gao,I Garzia,E M Gersabeck,A Gilman,K Goetzen,L Gong,W X Gong,W Gradl,M Greco,L M Gu,M H Gu,S Gu,Y T Gu,C Y Guan,A Q Guo,L B Guo,R P Guo,Y P Guo,A Guskov,T T Han,X Q Hao,F A Harris,K L He,F H H Heinsius,C H Heinz,Y K Heng,C Herold,M Himmelreich,T Holtmann,Y R Hou,Z L Hou,H M Hu,J F Hu,T Hu,Y Hu,G S Huang,L Q Huang,X T Huang,Y P Huang,T Hussain,W Imoehl,M Irshad,S Jaeger,S Janchiv,Q Ji,Q P Ji,X B Ji,X L Ji,X S Jiang,J B Jiao,Z Jiao,S Jin,Y Jin,T Johansson,N Kalantar-Nayestanaki,X S Kang,R Kappert,M Kavatsyuk,B C Ke,I K Keshk,A Khoukaz,P Kiese,R Kiuchi,R Kliemt,O B Kolcu,B Kopf,M Kuemmel,M K Kuessner,A Kupsc,M G Kurth,W Kühn,J J Lane,P Larin,A Lavania,L Lavezzi,Z H Lei,H Leithoff,M Lellmann,T Lenz,C Li,C H Li,Cheng Li,D M Li,F Li,G Li,H Li,H B Li,H J Li,J Q Li,J W Li,Ke Li,L K Li,Lei Li,P L Li,P R Li,S Y Li,W D Li,W G Li,X H Li,X L Li,Z Y Li,H Liang,H Liang,H Liang,Y F Liang,Y T Liang,G R Liao,L Z Liao,J Libby,A Limphirat,B J Liu,C X Liu,D Liu,F H Liu,Fang Liu,Feng Liu,H B Liu,H M Liu,Huanhuan Liu,Huihui Liu,J B Liu,J Y Liu,K Liu,K Y Liu,L Liu,M H Liu,Q Liu,S B Liu,Shuai Liu,T Liu,W M Liu,X Liu,Y B Liu,Z A Liu,Z Q Liu,X C Lou,F X Lu,H J Lu,J D Lu,J G Lu,X L Lu,Y Lu,Y P Lu,C L Luo,M X Luo,T Luo,X L Luo,S Lusso,X R Lyu,F C Ma,H L Ma,L L Ma,M M Ma,Q M Ma,R Q Ma,R T Ma,X X Ma,X Y Ma,F E Maas,M Maggiora,S Maldaner,S Malde,Q A Malik,A Mangoni,Y J Mao,Z P Mao,S Marcello,Z X Meng,J G Messchendorp,G Mezzadri,T J Min,R E Mitchell,X H Mo,N Yu Muchnoi,H Muramatsu,S Nakhoul,Y Nefedov,F Nerling,I B Nikolaev,Z Ning,S Nisar,S L Olsen,Q Ouyang,S Pacetti,X Pan,Y Pan,A Pathak,P Patteri,M Pelizaeus,H P Peng,K Peters,J L Ping,R G Ping,A Pitka,R Poling,V Prasad,H Qi,H R Qi,M Qi,T Y Qi,S Qian,W B Qian,C F Qiao,L Q Qin,X P Qin,X S Qin,Z H Qin,J F Qiu,S Q Qu,S Q Qu,K Ravindran,C F Redmer,A Rivetti,V Rodin,M Rolo,G Rong,Ch Rosner,A Sarantsev,Y Schelhaas,C Schnier,K Schoenning,M Scodeggio,D C Shan,W Shan,X Y Shan,M Shao,C P Shen,P X Shen,X Y Shen,H C Shi,R S Shi,X Shi,X D Shi,W M Song,Y X Song,S Sosio,S Spataro,K X Su,G X Sun,J F Sun,L Sun,S S Sun,T Sun,W Y Sun,Y J Sun,Y K Sun,Y Z Sun,Z T Sun,Y H Tan,Y X Tan,C J Tang,G Y Tang,J Tang,J X Teng,V Thoren,I Uman,B Wang,B L Wang,C W Wang,D Y Wang,H P Wang,K Wang,L L Wang,M Wang,Meng Wang,W H Wang,W P Wang,X Wang,X F Wang,X L Wang,Y Wang,Y D Wang,Y F Wang,Y Q Wang,Z Wang,Z Y Wang,Ziyi Wang,Zongyuan Wang,D H Wei,P Weidenkaff,F Weidner,S P Wen,D J White,U W Wiedner,G Wilkinson,M Wolke,L Wollenberg,J F Wu,L H Wu,L J Wu,X Wu,Z Wu,L Xia,H Xiao,S Y Xiao,Z J Xiao,X H Xie,Y G Xie,Y H Xie,T Y Xing,G F Xu,J J Xu,Q J Xu,W Xu,X P Xu,Y C Xu,F Yan,L Yan,W B Yan,W C Yan,Xu Yan,H J Yang,H X Yang,L Yang,S L Yang,Y H Yang,Yifan Yang,M Ye,M H Ye,J H Yin,Z Y You,B X Yu,C X Yu,G Yu,J S Yu,T Yu,C Z Yuan,L Yuan,W Yuan,Y Yuan,Z Y Yuan,C X Yue,A A Zafar,Y Zeng,B X Zhang,G Y Zhang,H Zhang,H H Zhang,H H Zhang,H Y Zhang,J J Zhang,J Q Zhang,J W Zhang,J Y Zhang,J Z Zhang,Jianyu Zhang,Jiawei Zhang,Lei Zhang,S F Zhang,X D Zhang,X Y Zhang,Y Zhang,Y T Zhang,Y H Zhang,Yan Zhang,Yao Zhang,Z Y Zhang,G Zhao,J Zhao,J Y Zhao,J Z Zhao,Lei Zhao,Ling Zhao,M G Zhao,Q Zhao,S J Zhao,Y B Zhao,Y X Zhao,Z G Zhao,A Zhemchugov,B Zheng,J P Zheng,Y H Zheng,B Zhong,C Zhong,L P Zhou,Q Zhou,X Zhou,X K Zhou,X R Zhou,A N Zhu,J Zhu,K Zhu,K J Zhu,S H Zhu,W J Zhu,W J Zhu,Y C Zhu,Z A Zhu,B S Zou,J H Zou,
Physical review letters（2023）
引用0|浏览3
暂无评分
摘要
We report on the first search for Λ[over ¯]-Λ oscillations in the decay J/ψ→pK^{-}Λ[over ¯]+c.c. by analyzing 1.31×10^{9} J/ψ events accumulated with the BESIII detector at the BEPCII collider. The J/ψ events are produced using e^{+}e^{-} collisions at a center of mass energy sqrt[s]=3.097 GeV. No evidence for hyperon oscillations is observed. The upper limit for the oscillation rate of Λ[over ¯] to Λ hyperons is determined to be P(Λ)=[B(J/ψ→pK^{-}Λ+c.c.)/B(J/ψ→pK^{-}Λ[over ¯]+c.c.)]<4.4×10^{-6} corresponding to an oscillation parameter δm_{ΛΛ[over ¯]} of less than 3.8×10^{-18} GeV at the 90% confidence level.
