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Measurement of the Cross Section for e^{+}e^{-}→Ξ^{-}Ξ[over ¯]^{+} and Observation of an Excited Ξ Baryon.
Physical Review Letters ( IF 8.1 ) Pub Date : 2020-01-24 , DOI: 10.1103/physrevlett.124.032002 M Ablikim 1 , M N Achasov 2 , P Adlarson 3 , S Ahmed 4 , M Albrecht 5 , M Alekseev 6, 7 , A Amoroso 6, 7 , F F An 1 , Q An 8, 9 , Y Bai 10 , O Bakina 11 , R Baldini Ferroli 12 , I Balossino 13 , Y Ban 14 , K Begzsuren 15 , J V Bennett 16 , N Berger 17 , M Bertani 12 , D Bettoni 13 , F Bianchi 6, 7 , J Biernat 3 , J Bloms 18 , I Boyko 11 , R A Briere 16 , H Cai 19 , X Cai 1, 8 , A Calcaterra 12 , G F Cao 1, 20 , N Cao 1, 20 , S A Cetin 21 , J Chai 7 , J F Chang 1, 8 , W L Chang 1, 20 , G Chelkov 11 , D Y Chen 22 , G Chen 1 , H S Chen 1, 20 , J C Chen 1 , M L Chen 1, 8 , S J Chen 23 , Y B Chen 1, 8 , W Cheng 7 , G Cibinetto 13 , F Cossio 7 , X F Cui 24 , H L Dai 1, 8 , J P Dai 25 , X C Dai 1, 20 , A Dbeyssi 4 , D Dedovich 11 , Z Y Deng 1 , A Denig 17 , I Denysenko 11 , M Destefanis 6, 7 , F De Mori 6, 7 , Y Ding 26 , C Dong 24 , J Dong 1, 8 , L Y Dong 1, 20 , M Y Dong 1, 8, 20 , Z L Dou 23 , S X Du 27 , J Z Fan 28 , J Fang 1, 8 , S S Fang 1, 20 , Y Fang 1 , R Farinelli 13, 29 , L Fava 7, 30 , F Feldbauer 5 , G Felici 12 , C Q Feng 8, 9 , M Fritsch 5 , C D Fu 1 , Y Fu 1 , Q Gao 1 , X L Gao 8, 9 , Y Gao 31 , Y Gao 28 , Y G Gao 22 , Z Gao 8, 9 , B Garillon 17 , I Garzia 13 , E M Gersabeck 32 , A Gilman 33 , K Goetzen 34 , L Gong 24 , W X Gong 1, 8 , W Gradl 17 , M Greco 6, 7 , L M Gu 23 , M H Gu 1, 8 , S Gu 35 , Y T Gu 36 , A Q Guo 37 , L B Guo 38 , R P Guo 39 , Y P Guo 17 , A Guskov 11 , S Han 19 , X Q Hao 40 , F A Harris 41 , K L He 1, 20 , F H Heinsius 5 , T Held 5 , Y K Heng 1, 8, 20 , M Himmelreich 34 , Y R Hou 20 , Z L Hou 1 , H M Hu 1, 20 , J F Hu 25 , T Hu 1, 8, 20 , Y Hu 1 , G S Huang 8, 9 , J S Huang 40 , X T Huang 42 , X Z Huang 23 , N Huesken 18 , T Hussain 43 , W Ikegami Andersson 3 , W Imoehl 37 , M Irshad 8, 9 , Q Ji 1 , Q P Ji 40 , X B Ji 1, 20 , X L Ji 1, 8 , H L Jiang 42 , X S Jiang 1, 8, 20 , X Y Jiang 24 , J B Jiao 42 , Z Jiao 44 , D P Jin 1, 8, 20 , S Jin 23 , Y Jin 45 , T Johansson 3 , N Kalantar-Nayestanaki 46 , X S Kang 26 , R Kappert 46 , M Kavatsyuk 46 , B C Ke 1 , I K Keshk 5 , A Khoukaz 18 , P Kiese 17 , R Kiuchi 1 , R Kliemt 34 , L Koch 47 , O B Kolcu 21 , B Kopf 5 , M Kuemmel 5 , M Kuessner 5 , A Kupsc 3 , M Kurth 1 , M G Kurth 1, 20 , W Kühn 47 , J S Lange 47 , P Larin 4 , L Lavezzi 7 , H Leithoff 17 , T Lenz 17 , C Li 3 , Cheng Li 8, 9 , D M Li 27 , F Li 1, 8 , F Y Li 14 , G Li 1 , H B Li 1, 20 , H J Li 48 , J C Li 1 , J W Li 49 , Ke Li 1 , L K Li 1 , Lei Li 50 , P L Li 8, 9 , P R Li 51 , Q Y Li 42 , W D Li 1, 20 , W G Li 1 , X H Li 8, 9 , X L Li 42 , X N Li 1, 8 , Z B Li 52 , Z Y Li 52 , H Liang 1, 20 , H Liang 8, 9 , Y F Liang 53 , Y T Liang 47 , G R Liao 54 , L Z Liao 1, 20 , J Libby 55 , C X Lin 52 , D X Lin 4 , Y J Lin 36 , B Liu 25 , B J Liu 1 , C X Liu 1 , D Liu 8, 9 , D Y Liu 25 , F H Liu 56 , Fang Liu 1 , Feng Liu 22 , H B Liu 36 , H M Liu 1, 20 , Huanhuan Liu 1 , Huihui Liu 57 , J B Liu 8, 9 , J Y Liu 1, 20 , K Liu 1 , K Y Liu 26 , Ke Liu 22 , L Y Liu 36 , Q Liu 20 , S B Liu 8, 9 , T Liu 1, 20 , X Liu 51 , X Y Liu 1, 20 , Y B Liu 24 , Z A Liu 1, 8, 20 , Zhiqing Liu 42 , Y F Long 14 , X C Lou 1, 8, 20 , H J Lu 44 , J D Lu 1, 20 , J G Lu 1, 8 , Y Lu 1 , Y P Lu 1, 8 , C L Luo 38 , M X Luo 58 , P W Luo 52 , T Luo 48 , X L Luo 1, 8 , S Lusso 7 , X R Lyu 20 , F C Ma 26 , H L Ma 1 , L L Ma 42 , M M Ma 1, 20 , Q M Ma 1 , X N Ma 24 , X X Ma 1, 20 , X Y Ma 1, 8 , Y M Ma 42 , F E Maas 4 , M Maggiora 6, 7 , S Maldaner 17 , S Malde 59 , Q A Malik 43 , A Mangoni 60 , Y J Mao 14 , Z P Mao 1 , S Marcello 6, 7 , Z X Meng 45 , J G Messchendorp 46 , G Mezzadri 13 , J Min 1, 8 , T J Min 23 , R E Mitchell 37 , X H Mo 1, 8, 20 , Y J Mo 22 , C Morales Morales 4 , N Yu Muchnoi 2 , H Muramatsu 33 , A Mustafa 5 , S Nakhoul 34 , Y Nefedov 11 , F Nerling 34 , I B Nikolaev 2 , Z Ning 1, 8 , S Nisar 61 , S L Niu 1, 8 , S L Olsen 20 , Q Ouyang 1, 8, 20 , S Pacetti 60 , Y Pan 8, 9 , M Papenbrock 3 , P Patteri 12 , M Pelizaeus 5 , H P Peng 8, 9 , K Peters 34 , J Pettersson 3 , J L Ping 38 , R G Ping 1, 20 , A Pitka 5 , R Poling 33 , V Prasad 8, 9 , H R Qi 35 , M Qi 23 , T Y Qi 35 , S Qian 1, 8 , C F Qiao 20 , N Qin 19 , X P Qin 36 , X S Qin 5 , Z H Qin 1, 8 , J F Qiu 1 , S Q Qu 24 , K H Rashid 43 , K Ravindran 55 , C F Redmer 17 , M Richter 5 , A Rivetti 7 , V Rodin 46 , M Rolo 7 , G Rong 1, 20 , Ch Rosner 4 , M Rump 18 , A Sarantsev 11 , M Savrié 29 , Y Schelhaas 17 , K Schoenning 3 , W Shan 62 , X Y Shan 8, 9 , M Shao 8, 9 , C P Shen 35 , P X Shen 24 , X Y Shen 1, 20 , H Y Sheng 1 , X Shi 1, 8 , X D Shi 8, 9 , J J Song 42 , Q Q Song 8, 9 , X Y Song 1 , S Sosio 6, 7 , C Sowa 5 , S Spataro 6, 7 , F F Sui 42 , G X Sun 1 , J F Sun 40 , L Sun 19 , S S Sun 1, 20 , X H Sun 1 , Y J Sun 8, 9 , Y K Sun 8, 9 , Y Z Sun 1 , Z J Sun 1, 8 , Z T Sun 1 , Y T Tan 8, 9 , C J Tang 53 , G Y Tang 1 , X Tang 1 , V Thoren 3 , B Tsednee 15 , I Uman 63 , B Wang 1 , B L Wang 20 , C W Wang 23 , D Y Wang 14 , K Wang 1, 8 , L L Wang 1 , L S Wang 1 , M Wang 42 , M Z Wang 14 , Meng Wang 1, 20 , P L Wang 1 , R M Wang 64 , W P Wang 8, 9 , X Wang 14 , X F Wang 51 , X L Wang 48 , Y Wang 52 , Y Wang 8, 9 , Y F Wang 1, 8, 20 , Y Q Wang 1 , Z Wang 1, 8 , Z G Wang 1, 8 , Z Y Wang 1 , Zongyuan Wang 1, 20 , T Weber 5 , D H Wei 54 , P Weidenkaff 17 , F Weidner 18 , H W Wen 38 , S P Wen 1 , U Wiedner 5 , G Wilkinson 59 , M Wolke 3 , L H Wu 1 , L J Wu 1, 20 , Z Wu 1, 8 , L Xia 8, 9 , Y Xia 65 , S Y Xiao 1 , Y J Xiao 1, 20 , Z J Xiao 38 , Y G Xie 1, 8 , Y H Xie 22 , T Y Xing 1, 20 , X A Xiong 1, 20 , Q L Xiu 1, 8 , G F Xu 1 , J J Xu 23 , L Xu 1 , Q J Xu 66 , W Xu 1, 20 , X P Xu 49 , F Yan 31 , L Yan 6, 7 , W B Yan 8, 9 , W C Yan 35 , Y H Yan 65 , H J Yang 25 , H X Yang 1 , L Yang 19 , R X Yang 8, 9 , S L Yang 1, 20 , Y H Yang 23 , Y X Yang 54 , Yifan Yang 1, 20 , Z Q Yang 65 , M Ye 1, 8 , M H Ye 67 , J H Yin 1 , Z Y You 52 , B X Yu 1, 8, 20 , C X Yu 24 , J S Yu 65 , T Yu 31 , C Z Yuan 1, 20 , X Q Yuan 14 , Y Yuan 1 , A Yuncu 21 , A A Zafar 43 , Y Zeng 65 , B X Zhang 1 , B Y Zhang 1, 8 , C C Zhang 1 , D H Zhang 1 , H H Zhang 52 , H Y Zhang 1, 8 , J Zhang 1, 20 , J L Zhang 64 , J Q Zhang 5 , J W Zhang 1, 8, 20 , J Y Zhang 1 , J Z Zhang 1, 20 , K Zhang 1, 20 , L Zhang 1 , S F Zhang 23 , T J Zhang 25 , X Y Zhang 42 , Y Zhang 8, 9 , Y H Zhang 1, 8 , Y T Zhang 8, 9 , Yang Zhang 1 , Yao Zhang 1 , Yi Zhang 48 , Yu Zhang 20 , Z H Zhang 22 , Z P Zhang 9 , Z Y Zhang 19 , G Zhao 1 , J W Zhao 1, 8 , J Y Zhao 1, 20 , J Z Zhao 1, 8 , Lei Zhao 8, 9 , Ling Zhao 1 , M G Zhao 24 , Q Zhao 1 , S J Zhao 27 , T C Zhao 1 , Y B Zhao 1, 8 , Z G Zhao 8, 9 , A Zhemchugov 11 , B Zheng 31 , J P Zheng 1, 8 , Y Zheng 14 , Y H Zheng 20 , B Zhong 38 , L Zhou 1, 8 , L P Zhou 1, 20 , Q Zhou 1, 20 , X Zhou 19 , X K Zhou 20 , X R Zhou 8, 9 , Xiaoyu Zhou 65 , Xu Zhou 65 , A N Zhu 1, 20 , J Zhu 24 , J Zhu 52 , K Zhu 1 , K J Zhu 1, 8, 20 , S H Zhu 68 , W J Zhu 24 , X L Zhu 28 , Y C Zhu 8, 9 , Y S Zhu 1, 20 , Z A Zhu 1, 20 , J Zhuang 1, 8 , B S Zou 1 , J H Zou 1 ,
Physical Review Letters ( IF 8.1 ) Pub Date : 2020-01-24 , DOI: 10.1103/physrevlett.124.032002 M Ablikim 1 , M N Achasov 2 , P Adlarson 3 , S Ahmed 4 , M Albrecht 5 , M Alekseev 6, 7 , A Amoroso 6, 7 , F F An 1 , Q An 8, 9 , Y Bai 10 , O Bakina 11 , R Baldini Ferroli 12 , I Balossino 13 , Y Ban 14 , K Begzsuren 15 , J V Bennett 16 , N Berger 17 , M Bertani 12 , D Bettoni 13 , F Bianchi 6, 7 , J Biernat 3 , J Bloms 18 , I Boyko 11 , R A Briere 16 , H Cai 19 , X Cai 1, 8 , A Calcaterra 12 , G F Cao 1, 20 , N Cao 1, 20 , S A Cetin 21 , J Chai 7 , J F Chang 1, 8 , W L Chang 1, 20 , G Chelkov 11 , D Y Chen 22 , G Chen 1 , H S Chen 1, 20 , J C Chen 1 , M L Chen 1, 8 , S J Chen 23 , Y B Chen 1, 8 , W Cheng 7 , G Cibinetto 13 , F Cossio 7 , X F Cui 24 , H L Dai 1, 8 , J P Dai 25 , X C Dai 1, 20 , A Dbeyssi 4 , D Dedovich 11 , Z Y Deng 1 , A Denig 17 , I Denysenko 11 , M Destefanis 6, 7 , F De Mori 6, 7 , Y Ding 26 , C Dong 24 , J Dong 1, 8 , L Y Dong 1, 20 , M Y Dong 1, 8, 20 , Z L Dou 23 , S X Du 27 , J Z Fan 28 , J Fang 1, 8 , S S Fang 1, 20 , Y Fang 1 , R Farinelli 13, 29 , L Fava 7, 30 , F Feldbauer 5 , G Felici 12 , C Q Feng 8, 9 , M Fritsch 5 , C D Fu 1 , Y Fu 1 , Q Gao 1 , X L Gao 8, 9 , Y Gao 31 , Y Gao 28 , Y G Gao 22 , Z Gao 8, 9 , B Garillon 17 , I Garzia 13 , E M Gersabeck 32 , A Gilman 33 , K Goetzen 34 , L Gong 24 , W X Gong 1, 8 , W Gradl 17 , M Greco 6, 7 , L M Gu 23 , M H Gu 1, 8 , S Gu 35 , Y T Gu 36 , A Q Guo 37 , L B Guo 38 , R P Guo 39 , Y P Guo 17 , A Guskov 11 , S Han 19 , X Q Hao 40 , F A Harris 41 , K L He 1, 20 , F H Heinsius 5 , T Held 5 , Y K Heng 1, 8, 20 , M Himmelreich 34 , Y R Hou 20 , Z L Hou 1 , H M Hu 1, 20 , J F Hu 25 , T Hu 1, 8, 20 , Y Hu 1 , G S Huang 8, 9 , J S Huang 40 , X T Huang 42 , X Z Huang 23 , N Huesken 18 , T Hussain 43 , W Ikegami Andersson 3 , W Imoehl 37 , M Irshad 8, 9 , Q Ji 1 , Q P Ji 40 , X B Ji 1, 20 , X L Ji 1, 8 , H L Jiang 42 , X S Jiang 1, 8, 20 , X Y Jiang 24 , J B Jiao 42 , Z Jiao 44 , D P Jin 1, 8, 20 , S Jin 23 , Y Jin 45 , T Johansson 3 , N Kalantar-Nayestanaki 46 , X S Kang 26 , R Kappert 46 , M Kavatsyuk 46 , B C Ke 1 , I K Keshk 5 , A Khoukaz 18 , P Kiese 17 , R Kiuchi 1 , R Kliemt 34 , L Koch 47 , O B Kolcu 21 , B Kopf 5 , M Kuemmel 5 , M Kuessner 5 , A Kupsc 3 , M Kurth 1 , M G Kurth 1, 20 , W Kühn 47 , J S Lange 47 , P Larin 4 , L Lavezzi 7 , H Leithoff 17 , T Lenz 17 , C Li 3 , Cheng Li 8, 9 , D M Li 27 , F Li 1, 8 , F Y Li 14 , G Li 1 , H B Li 1, 20 , H J Li 48 , J C Li 1 , J W Li 49 , Ke Li 1 , L K Li 1 , Lei Li 50 , P L Li 8, 9 , P R Li 51 , Q Y Li 42 , W D Li 1, 20 , W G Li 1 , X H Li 8, 9 , X L Li 42 , X N Li 1, 8 , Z B Li 52 , Z Y Li 52 , H Liang 1, 20 , H Liang 8, 9 , Y F Liang 53 , Y T Liang 47 , G R Liao 54 , L Z Liao 1, 20 , J Libby 55 , C X Lin 52 , D X Lin 4 , Y J Lin 36 , B Liu 25 , B J Liu 1 , C X Liu 1 , D Liu 8, 9 , D Y Liu 25 , F H Liu 56 , Fang Liu 1 , Feng Liu 22 , H B Liu 36 , H M Liu 1, 20 , Huanhuan Liu 1 , Huihui Liu 57 , J B Liu 8, 9 , J Y Liu 1, 20 , K Liu 1 , K Y Liu 26 , Ke Liu 22 , L Y Liu 36 , Q Liu 20 , S B Liu 8, 9 , T Liu 1, 20 , X Liu 51 , X Y Liu 1, 20 , Y B Liu 24 , Z A Liu 1, 8, 20 , Zhiqing Liu 42 , Y F Long 14 , X C Lou 1, 8, 20 , H J Lu 44 , J D Lu 1, 20 , J G Lu 1, 8 , Y Lu 1 , Y P Lu 1, 8 , C L Luo 38 , M X Luo 58 , P W Luo 52 , T Luo 48 , X L Luo 1, 8 , S Lusso 7 , X R Lyu 20 , F C Ma 26 , H L Ma 1 , L L Ma 42 , M M Ma 1, 20 , Q M Ma 1 , X N Ma 24 , X X Ma 1, 20 , X Y Ma 1, 8 , Y M Ma 42 , F E Maas 4 , M Maggiora 6, 7 , S Maldaner 17 , S Malde 59 , Q A Malik 43 , A Mangoni 60 , Y J Mao 14 , Z P Mao 1 , S Marcello 6, 7 , Z X Meng 45 , J G Messchendorp 46 , G Mezzadri 13 , J Min 1, 8 , T J Min 23 , R E Mitchell 37 , X H Mo 1, 8, 20 , Y J Mo 22 , C Morales Morales 4 , N Yu Muchnoi 2 , H Muramatsu 33 , A Mustafa 5 , S Nakhoul 34 , Y Nefedov 11 , F Nerling 34 , I B Nikolaev 2 , Z Ning 1, 8 , S Nisar 61 , S L Niu 1, 8 , S L Olsen 20 , Q Ouyang 1, 8, 20 , S Pacetti 60 , Y Pan 8, 9 , M Papenbrock 3 , P Patteri 12 , M Pelizaeus 5 , H P Peng 8, 9 , K Peters 34 , J Pettersson 3 , J L Ping 38 , R G Ping 1, 20 , A Pitka 5 , R Poling 33 , V Prasad 8, 9 , H R Qi 35 , M Qi 23 , T Y Qi 35 , S Qian 1, 8 , C F Qiao 20 , N Qin 19 , X P Qin 36 , X S Qin 5 , Z H Qin 1, 8 , J F Qiu 1 , S Q Qu 24 , K H Rashid 43 , K Ravindran 55 , C F Redmer 17 , M Richter 5 , A Rivetti 7 , V Rodin 46 , M Rolo 7 , G Rong 1, 20 , Ch Rosner 4 , M Rump 18 , A Sarantsev 11 , M Savrié 29 , Y Schelhaas 17 , K Schoenning 3 , W Shan 62 , X Y Shan 8, 9 , M Shao 8, 9 , C P Shen 35 , P X Shen 24 , X Y Shen 1, 20 , H Y Sheng 1 , X Shi 1, 8 , X D Shi 8, 9 , J J Song 42 , Q Q Song 8, 9 , X Y Song 1 , S Sosio 6, 7 , C Sowa 5 , S Spataro 6, 7 , F F Sui 42 , G X Sun 1 , J F Sun 40 , L Sun 19 , S S Sun 1, 20 , X H Sun 1 , Y J Sun 8, 9 , Y K Sun 8, 9 , Y Z Sun 1 , Z J Sun 1, 8 , Z T Sun 1 , Y T Tan 8, 9 , C J Tang 53 , G Y Tang 1 , X Tang 1 , V Thoren 3 , B Tsednee 15 , I Uman 63 , B Wang 1 , B L Wang 20 , C W Wang 23 , D Y Wang 14 , K Wang 1, 8 , L L Wang 1 , L S Wang 1 , M Wang 42 , M Z Wang 14 , Meng Wang 1, 20 , P L Wang 1 , R M Wang 64 , W P Wang 8, 9 , X Wang 14 , X F Wang 51 , X L Wang 48 , Y Wang 52 , Y Wang 8, 9 , Y F Wang 1, 8, 20 , Y Q Wang 1 , Z Wang 1, 8 , Z G Wang 1, 8 , Z Y Wang 1 , Zongyuan Wang 1, 20 , T Weber 5 , D H Wei 54 , P Weidenkaff 17 , F Weidner 18 , H W Wen 38 , S P Wen 1 , U Wiedner 5 , G Wilkinson 59 , M Wolke 3 , L H Wu 1 , L J Wu 1, 20 , Z Wu 1, 8 , L Xia 8, 9 , Y Xia 65 , S Y Xiao 1 , Y J Xiao 1, 20 , Z J Xiao 38 , Y G Xie 1, 8 , Y H Xie 22 , T Y Xing 1, 20 , X A Xiong 1, 20 , Q L Xiu 1, 8 , G F Xu 1 , J J Xu 23 , L Xu 1 , Q J Xu 66 , W Xu 1, 20 , X P Xu 49 , F Yan 31 , L Yan 6, 7 , W B Yan 8, 9 , W C Yan 35 , Y H Yan 65 , H J Yang 25 , H X Yang 1 , L Yang 19 , R X Yang 8, 9 , S L Yang 1, 20 , Y H Yang 23 , Y X Yang 54 , Yifan Yang 1, 20 , Z Q Yang 65 , M Ye 1, 8 , M H Ye 67 , J H Yin 1 , Z Y You 52 , B X Yu 1, 8, 20 , C X Yu 24 , J S Yu 65 , T Yu 31 , C Z Yuan 1, 20 , X Q Yuan 14 , Y Yuan 1 , A Yuncu 21 , A A Zafar 43 , Y Zeng 65 , B X Zhang 1 , B Y Zhang 1, 8 , C C Zhang 1 , D H Zhang 1 , H H Zhang 52 , H Y Zhang 1, 8 , J Zhang 1, 20 , J L Zhang 64 , J Q Zhang 5 , J W Zhang 1, 8, 20 , J Y Zhang 1 , J Z Zhang 1, 20 , K Zhang 1, 20 , L Zhang 1 , S F Zhang 23 , T J Zhang 25 , X Y Zhang 42 , Y Zhang 8, 9 , Y H Zhang 1, 8 , Y T Zhang 8, 9 , Yang Zhang 1 , Yao Zhang 1 , Yi Zhang 48 , Yu Zhang 20 , Z H Zhang 22 , Z P Zhang 9 , Z Y Zhang 19 , G Zhao 1 , J W Zhao 1, 8 , J Y Zhao 1, 20 , J Z Zhao 1, 8 , Lei Zhao 8, 9 , Ling Zhao 1 , M G Zhao 24 , Q Zhao 1 , S J Zhao 27 , T C Zhao 1 , Y B Zhao 1, 8 , Z G Zhao 8, 9 , A Zhemchugov 11 , B Zheng 31 , J P Zheng 1, 8 , Y Zheng 14 , Y H Zheng 20 , B Zhong 38 , L Zhou 1, 8 , L P Zhou 1, 20 , Q Zhou 1, 20 , X Zhou 19 , X K Zhou 20 , X R Zhou 8, 9 , Xiaoyu Zhou 65 , Xu Zhou 65 , A N Zhu 1, 20 , J Zhu 24 , J Zhu 52 , K Zhu 1 , K J Zhu 1, 8, 20 , S H Zhu 68 , W J Zhu 24 , X L Zhu 28 , Y C Zhu 8, 9 , Y S Zhu 1, 20 , Z A Zhu 1, 20 , J Zhuang 1, 8 , B S Zou 1 , J H Zou 1 ,
Affiliation
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Using a total of 11.0 fb^{-1} of e^{+}e^{-} collision data with center-of-mass energies between 4.009 and 4.6 GeV and collected with the BESIII detector at BEPCII, we measure fifteen exclusive cross sections and effective form factors for the process e^{+}e^{-}→Ξ^{-}Ξ[over ¯]^{+} by means of a single baryon-tag method. After performing a fit to the dressed cross section of e^{+}e^{-}→Ξ^{-}Ξ[over ¯]^{+}, no significant ψ(4230) or ψ(4260) resonance is observed in the Ξ^{-}Ξ[over ¯]^{+} final states, and upper limits at the 90% confidence level on Γ_{ee}B for the processes ψ(4230)/ψ(4260)→Ξ^{-}Ξ[over ¯]^{+} are determined. In addition, an excited Ξ baryon at 1820 MeV/c^{2} is observed with a statistical significance of 6.2-6.5σ by including the systematic uncertainty, and the mass and width are measured to be M=(1825.5±4.7±4.7) MeV/c^{2} and Γ=(17.0±15.0±7.9) MeV, which confirms the existence of the J^{P}=3/2^{-} state Ξ(1820).
中文翻译：
e ^ {+} e ^ {-}→Ξ^ {-}Ξ[over¯] ^ {+}的横截面测量和激发Ξ重子的观测。
使用质心能量在4.009至4.6 GeV之间并由BEPCII的BESIII检测器收集的总共11.0 fb ^ {-1}的e ^ {+} e ^ {-}碰撞数据，我们测量了15个互斥量e ^ {+} e ^ {-}→Ξ^ {-}Ξ[over¯] ^ {+}的过程的截面和有效形状因数，采用单重子标记方法。在对e ^ {+} e ^ {-}→Ξ^ {-}Ξ[over¯] ^ {+}的修整横截面进行拟合之后，未观察到明显的ψ（4230）或ψ（4260）共振最终状态，并且对于过程ψ（4230）/ψ（4260）→Ξ^ {确定-}Ξ[¯¯^] ^ {+}。此外，通过包括系统不确定性在内，观察到在1820 MeV / c ^ {2}处激发的Ξ重子，统计显着性为6.2-6.5σ，质量和宽度的测量值为M =（1825.5±4.7±4.7） ）MeV / c ^ {2}和Γ=（17。
更新日期：2020-01-24
中文翻译：
e ^ {+} e ^ {-}→Ξ^ {-}Ξ[over¯] ^ {+}的横截面测量和激发Ξ重子的观测。
使用质心能量在4.009至4.6 GeV之间并由BEPCII的BESIII检测器收集的总共11.0 fb ^ {-1}的e ^ {+} e ^ {-}碰撞数据，我们测量了15个互斥量e ^ {+} e ^ {-}→Ξ^ {-}Ξ[over¯] ^ {+}的过程的截面和有效形状因数，采用单重子标记方法。在对e ^ {+} e ^ {-}→Ξ^ {-}Ξ[over¯] ^ {+}的修整横截面进行拟合之后，未观察到明显的ψ（4230）或ψ（4260）共振最终状态，并且对于过程ψ（4230）/ψ（4260）→Ξ^ {确定-}Ξ[¯¯^] ^ {+}。此外，通过包括系统不确定性在内，观察到在1820 MeV / c ^ {2}处激发的Ξ重子，统计显着性为6.2-6.5σ，质量和宽度的测量值为M =（1825.5±4.7±4.7） ）MeV / c ^ {2}和Γ=（17。
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