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Using a sample of about 10(10) J/Psi events collected at a center-of-mass energy root s = 3.097 GeV with the BESIII detector, the electromagnetic Dalitz decays J/Psi -> e(+)e(-) pi(+)pi(-) eta', with eta' -> gamma pi(+)pi(-) and eta' -> pi(+)pi(-) eta, have been studied. The decay J/Psi -> e(+)e(-) X(1835) is observed with a significance of 15 sigma, and also an e(+)e(-) invariant-mass dependent transition form factor of J/Psi -> e(+)e(-) X(1835) is presented for the first time. The intermediate states X(2120) and X(2370) are also observed in the pi(+)pi(-) eta' invariant-mass spectrum with significances of 5.3 sigma and 7.3 sigma. The corresponding product branching fractions for J/Psi -> e(+)e(-) X, X -> pi(+) pi(-) eta' [X = X(1835), X(2120), and X(2370)] are reported.
Observation of J/ψ Electromagnetic Dalitz Decays to X(1835), X(2120), and X(2370)
Ablikim, M;Achasov, M N;Adlarson, P;Ahmed, S;Albrecht, M;Aliberti, R;Amoroso, A;An, M R;An, Q;Bai, X H;Bai, Y;Bakina, O;Baldini Ferroli, R;Balossino, I;Ban, Y;Begzsuren, K;Berger, N;Bertani, M;Bettoni, D;Bianchi, F;Bloms, J;Bortone, A;Boyko, I;Briere, R A;Cai, H;Cai, X;Calcaterra, A;Cao, G F;Cao, N;Cetin, S A;Chang, J F;Chang, W L;Chelkov, G;Chen, D Y;Chen, G;Chen, H S;Chen, M L;Chen, S J;Chen, X R;Chen, Y B;Chen, Z J;Cheng, W S;Cibinetto, G;Cossio, F;Cui, X F;Dai, H L;Dai, X C;Dbeyssi, A;de Boer, R E;Dedovich, D;Deng, Z Y;Denig, A;Denysenko, I;Destefanis, M;De Mori, F;Ding, Y;Dong, C;Dong, J;Dong, L Y;Dong, M Y;Dong, X;Du, S X;Fan, Y L;Fang, J;Fang, S S;Fang, Y;Farinelli, R;Fava, L;Feldbauer, F;Felici, G;Feng, C Q;Feng, J H;Fritsch, M;Fu, C D;Gao, Y;Gao, Y;Gao, Y;Gao, Y G;Garzia, I;Ge, P T;Geng, C;Gersabeck, E M;Gilman, A;Goetzen, K;Gong, L;Gong, W X;Gradl, W;Greco, M;Gu, L M;Gu, M H;Gu, S;Gu, Y T;Guan, C Y;Guo, A Q;Guo, L B;Guo, R P;Guo, Y P;Guskov, A;Han, T T;Han, W Y;Hao, X Q;Harris, F A;He, K L;Heinsius, F H;Heinz, C H;Held, T;Heng, Y K;Herold, C;Himmelreich, M;Holtmann, T;Hou, G Y;Hou, Y R;Hou, Z L;Hu, H M;Hu, J F;Hu, T;Hu, Y;Huang, G S;Huang, L Q;Huang, X T;Huang, Y P;Huang, Z;Hussain, T;Hüsken, N;Ikegami Andersson, W;Imoehl, W;Irshad, M;Jaeger, S;Janchiv, S;Ji, Q;Ji, Q P;Ji, X B;Ji, X L;Ji, Y Y;Jiang, H B;Jiang, X S;Jiao, J B;Jiao, Z;Jin, S;Jin, Y;Jing, M Q;Johansson, T;Kalantar-Nayestanaki, N;Kang, X S;Kappert, R;Kavatsyuk, M;Ke, B C;Keshk, I K;Khoukaz, A;Kiese, P;Kiuchi, R;Kliemt, R;Koch, L;Kolcu, O B;Kopf, B;Kuemmel, M;Kuessner, M;Kupsc, A;Kurth, M G;Kühn, W;Lane, J J;Lange, J S;Larin, P;Lavania, A;Lavezzi, L;Lei, Z H;Leithoff, H;Lellmann, M;Lenz, T;Li, C;Li, C H;Li, Cheng;Li, D M;Li, F;Li, G;Li, H;Li, H;Li, H B;Li, H J;Li, J L;Li, J Q;Li, J S;Li, Ke;Li, L K;Li, Lei;Li, P R;Li, S Y;Li, W D;Li, W G;Li, X H;Li, X L;Li, Xiaoyu;Li, Z Y;Liang, H;Liang, H;Liang, H;Liang, Y F;Liang, Y T;Liao, G R;Liao, L Z;Libby, J;Lin, C X;Liu, 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 L;Liu, J Y;Liu, K;Liu, K Y;Liu, L;Liu, M H;Liu, P L;Liu, Q;Liu, Q;Liu, S B;Liu, Shuai;Liu, T;Liu, W M;Liu, X;Liu, Y;Liu, Y B;Liu, Z A;Liu, Z Q;Lou, X C;Lu, F X;Lu, H J;Lu, J D;Lu, J G;Lu, X L;Lu, Y;Lu, Y P;Luo, C L;Luo, M X;Luo, P W;Luo, T;Luo, X L;Lyu, X R;Ma, 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;Maas, F E;Maggiora, M;Maldaner, S;Malde, S;Malik, Q A;Mangoni, A;Mao, Y J;Mao, Z P;Marcello, S;Meng, Z X;Messchendorp, J G;Mezzadri, G;Min, T J;Mitchell, R E;Mo, X H;Mo, Y J;Muchnoi, N Yu;Muramatsu, H;Nakhoul, S;Nefedov, Y;Nerling, F;Nikolaev, I B;Ning, Z;Nisar, S;Olsen, S L;Ouyang, Q;Pacetti, S;Pan, X;Pan, Y;Pathak, A;Patteri, P;Pelizaeus, M;Peng, H P;Peters, K;Pettersson, J;Ping, J L;Ping, R G;Poling, R;Prasad, V;Qi, H;Qi, H R;Qi, K H;Qi, M;Qi, T Y;Qian, S;Qian, W B;Qian, Z;Qiao, C F;Qin, L Q;Qin, X P;Qin, X S;Qin, Z H;Qiu, J F;Qu, S Q;Rashid, K H;Ravindran, K;Redmer, C F;Rivetti, A;Rodin, V;Rolo, M;Rong, G;Rosner, Ch;Rump, M;Sang, H S;Sarantsev, A;Schelhaas, Y;Schnier, C;Schoenning, K;Scodeggio, M;Shan, D C;Shan, W;Shan, X Y;Shangguan, J F;Shao, M;Shen, C P;Shen, H F;Shen, P X;Shen, X Y;Shi, H C;Shi, R S;Shi, X;Shi, X D;Song, J J;Song, W M;Song, Y X;Sosio, S;Spataro, S;Su, K X;Su, P P;Sui, F F;Sun, G X;Sun, H K;Sun, J F;Sun, L;Sun, S S;Sun, T;Sun, W Y;Sun, W Y;Sun, X;Sun, Y J;Sun, Y K;Sun, Y Z;Sun, Z T;Tan, Y H;Tan, Y X;Tang, C J;Tang, G Y;Tang, J;Teng, J X;Thoren, V;Tian, W H;Tian, Y T;Uman, I;Wang, B;Wang, C W;Wang, D Y;Wang, H J;Wang, H P;Wang, K;Wang, L L;Wang, M;Wang, M Z;Wang, Meng;Wang, W;Wang, W H;Wang, W P;Wang, X;Wang, X F;Wang, X L;Wang, Y;Wang, Y;Wang, Y D;Wang, Y F;Wang, Y Q;Wang, Y Y;Wang, Z;Wang, Z Y;Wang, Ziyi;Wang, Zongyuan;Wei, D H;Weidner, F;Wen, S P;White, D J;Wiedner, U;Wilkinson, G;Wolke, M;Wollenberg, L;Wu, J F;Wu, L H;Wu, L J;Wu, X;Wu, Z;Xia, L;Xiao, H;Xiao, S Y;Xiao, Z J;Xie, X H;Xie, Y G;Xie, Y H;Xing, T Y;Xu, G F;Xu, Q J;Xu, W;Xu, X P;Xu, Y C;Yan, F;Yan, L;Yan, W B;Yan, W C;Yan, Xu;Yang, H J;Yang, H X;Yang, L;Yang, S L;Yang, Y X;Yang, Yifan;Yang, Zhi;Ye, M;Ye, M H;Yin, J H;You, Z Y;Yu, B X;Yu, C X;Yu, G;Yu, J S;Yu, T;Yuan, C Z;Yuan, L;Yuan, X Q;Yuan, Y;Yuan, Z Y;Yue, C X;Yuncu, A;Zafar, A A;Zeng, X;Zeng, Y;Zhang, A Q;Zhang, B X;Zhang, Guangyi;Zhang, H;Zhang, H H;Zhang, H H;Zhang, H Y;Zhang, J J;Zhang, J L;Zhang, J Q;Zhang, J W;Zhang, J Y;Zhang, J Z;Zhang, Jianyu;Zhang, Jiawei;Zhang, L M;Zhang, L Q;Zhang, Lei;Zhang, S;Zhang, S F;Zhang, Shulei;Zhang, X D;Zhang, X Y;Zhang, Y;Zhang, Y H;Zhang, Y T;Zhang, Yan;Zhang, Yao;Zhang, Yi;Zhang, Z H;Zhang, Z Y;Zhao, 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;Zhemchugov, A;Zheng, B;Zheng, J P;Zheng, Y;Zheng, Y H;Zhong, B;Zhong, C;Zhou, L P;Zhou, Q;Zhou, X;Zhou, X K;Zhou, X R;Zhou, X Y;Zhu, A N;Zhu, J;Zhu, K;Zhu, K J;Zhu, S H;Zhu, T J;Zhu, W J;Zhu, W J;Zhu, Y C;Zhu, Z A;Zou, B S;Zou, J H
2022-01-01
Abstract
Using a sample of about 10(10) J/Psi events collected at a center-of-mass energy root s = 3.097 GeV with the BESIII detector, the electromagnetic Dalitz decays J/Psi -> e(+)e(-) pi(+)pi(-) eta', with eta' -> gamma pi(+)pi(-) and eta' -> pi(+)pi(-) eta, have been studied. The decay J/Psi -> e(+)e(-) X(1835) is observed with a significance of 15 sigma, and also an e(+)e(-) invariant-mass dependent transition form factor of J/Psi -> e(+)e(-) X(1835) is presented for the first time. The intermediate states X(2120) and X(2370) are also observed in the pi(+)pi(-) eta' invariant-mass spectrum with significances of 5.3 sigma and 7.3 sigma. The corresponding product branching fractions for J/Psi -> e(+)e(-) X, X -> pi(+) pi(-) eta' [X = X(1835), X(2120), and X(2370)] are reported.
Ablikim, M; Achasov, M N; Adlarson, P; Ahmed, S; Albrecht, M; Aliberti, R; Amoroso, A; An, M R; An, Q; Bai, X H; Bai, Y; Bakina, O; Baldini Ferroli, R; Balossino, I; Ban, Y; Begzsuren, K; Berger, N; Bertani, M; Bettoni, D; Bianchi, F; Bloms, J; Bortone, A; Boyko, I; Briere, R A; Cai, H; Cai, X; Calcaterra, A; Cao, G F; Cao, N; Cetin, S A; Chang, J F; Chang, W L; Chelkov, G; Chen, D Y; Chen, G; Chen, H S; Chen, M L; Chen, S J; Chen, X R; Chen, Y B; Chen, Z J; Cheng, W S; Cibinetto, G; Cossio, F; Cui, X F; Dai, H L; Dai, X C; Dbeyssi, A; de Boer, R E; Dedovich, D; Deng, Z Y; Denig, A; Denysenko, I; Destefanis, M; De Mori, F; Ding, Y; Dong, C; Dong, J; Dong, L Y; Dong, M Y; Dong, X; Du, S X; Fan, Y L; Fang, J; Fang, S S; Fang, Y; Farinelli, R; Fava, L; Feldbauer, F; Felici, G; Feng, C Q; Feng, J H; Fritsch, M; Fu, C D; Gao, Y; Gao, Y; Gao, Y; Gao, Y G; Garzia, I; Ge, P T; Geng, C; Gersabeck, E M; Gilman, A; Goetzen, K; Gong, L; Gong, W X; Gradl, W; Greco, M; Gu, L M; Gu, M H; Gu, S; Gu, Y T; Guan, C Y; Guo, A Q; Guo, L B; Guo, R P; Guo, Y P; Guskov, A; Han, T T; Han, W Y; Hao, X Q; Harris, F A; He, K L; Heinsius, F H; Heinz, C H; Held, T; Heng, Y K; Herold, C; Himmelreich, M; Holtmann, T; Hou, G Y; Hou, Y R; Hou, Z L; Hu, H M; Hu, J F; Hu, T; Hu, Y; Huang, G S; Huang, L Q; Huang, X T; Huang, Y P; Huang, Z; Hussain, T; Hüsken, N; Ikegami Andersson, W; Imoehl, W; Irshad, M; Jaeger, S; Janchiv, S; Ji, Q; Ji, Q P; Ji, X B; Ji, X L; Ji, Y Y; Jiang, H B; Jiang, X S; Jiao, J B; Jiao, Z; Jin, S; Jin, Y; Jing, M Q; Johansson, T; Kalantar-Nayestanaki, N; Kang, X S; Kappert, R; Kavatsyuk, M; Ke, B C; Keshk, I K; Khoukaz, A; Kiese, P; Kiuchi, R; Kliemt, R; Koch, L; Kolcu, O B; Kopf, B; Kuemmel, M; Kuessner, M; Kupsc, A; Kurth, M G; Kühn, W; Lane, J J; Lange, J S; Larin, P; Lavania, A; Lavezzi, L; Lei, Z H; Leithoff, H; Lellmann, M; Lenz, T; Li, C; Li, C H; Li, Cheng; Li, D M; Li, F; Li, G; Li, H; Li, H; Li, H B; Li, H J; Li, J L; Li, J Q; Li, J S; Li, Ke; Li, L K; Li, Lei; Li, P R; Li, S Y; Li, W D; Li, W G; Li, X H; Li, X L; Li, Xiaoyu; Li, Z Y; Liang, H; Liang, H; Liang, H; Liang, Y F; Liang, Y T; Liao, G R; Liao, L Z; Libby, J; Lin, C X; Liu, 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 L; Liu, J Y; Liu, K; Liu, K Y; Liu, L; Liu, M H; Liu, P L; Liu, Q; Liu, Q; Liu, S B; Liu, Shuai; Liu, T; Liu, W M; Liu, X; Liu, Y; Liu, Y B; Liu, Z A; Liu, Z Q; Lou, X C; Lu, F X; Lu, H J; Lu, J D; Lu, J G; Lu, X L; Lu, Y; Lu, Y P; Luo, C L; Luo, M X; Luo, P W; Luo, T; Luo, X L; Lyu, X R; Ma, 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; Maas, F E; Maggiora, M; Maldaner, S; Malde, S; Malik, Q A; Mangoni, A; Mao, Y J; Mao, Z P; Marcello, S; Meng, Z X; Messchendorp, J G; Mezzadri, G; Min, T J; Mitchell, R E; Mo, X H; Mo, Y J; Muchnoi, N Yu; Muramatsu, H; Nakhoul, S; Nefedov, Y; Nerling, F; Nikolaev, I B; Ning, Z; Nisar, S; Olsen, S L; Ouyang, Q; Pacetti, S; Pan, X; Pan, Y; Pathak, A; Patteri, P; Pelizaeus, M; Peng, H P; Peters, K; Pettersson, J; Ping, J L; Ping, R G; Poling, R; Prasad, V; Qi, H; Qi, H R; Qi, K H; Qi, M; Qi, T Y; Qian, S; Qian, W B; Qian, Z; Qiao, C F; Qin, L Q; Qin, X P; Qin, X S; Qin, Z H; Qiu, J F; Qu, S Q; Rashid, K H; Ravindran, K; Redmer, C F; Rivetti, A; Rodin, V; Rolo, M; Rong, G; Rosner, Ch; Rump, M; Sang, H S; Sarantsev, A; Schelhaas, Y; Schnier, C; Schoenning, K; Scodeggio, M; Shan, D C; Shan, W; Shan, X Y; Shangguan, J F; Shao, M; Shen, C P; Shen, H F; Shen, P X; Shen, X Y; Shi, H C; Shi, R S; Shi, X; Shi, X D; Song, J J; Song, W M; Song, Y X; Sosio, S; Spataro, S; Su, K X; Su, P P; Sui, F F; Sun, G X; Sun, H K; Sun, J F; Sun, L; Sun, S S; Sun, T; Sun, W Y; Sun, W Y; Sun, X; Sun, Y J; Sun, Y K; Sun, Y Z; Sun, Z T; Tan, Y H; Tan, Y X; Tang, C J; Tang, G Y; Tang, J; Teng, J X; Thoren, V; Tian, W H; Tian, Y T; Uman, I; Wang, B; Wang, C W; Wang, D Y; Wang, H J; Wang, H P; Wang, K; Wang, L L; Wang, M; Wang, M Z; Wang, Meng; Wang, W; Wang, W H; Wang, W P; Wang, X; Wang, X F; Wang, X L; Wang, Y; Wang, Y; Wang, Y D; Wang, Y F; Wang, Y Q; Wang, Y Y; Wang, Z; Wang, Z Y; Wang, Ziyi; Wang, Zongyuan; Wei, D H; Weidner, F; Wen, S P; White, D J; Wiedner, U; Wilkinson, G; Wolke, M; Wollenberg, L; Wu, J F; Wu, L H; Wu, L J; Wu, X; Wu, Z; Xia, L; Xiao, H; Xiao, S Y; Xiao, Z J; Xie, X H; Xie, Y G; Xie, Y H; Xing, T Y; Xu, G F; Xu, Q J; Xu, W; Xu, X P; Xu, Y C; Yan, F; Yan, L; Yan, W B; Yan, W C; Yan, Xu; Yang, H J; Yang, H X; Yang, L; Yang, S L; Yang, Y X; Yang, Yifan; Yang, Zhi; Ye, M; Ye, M H; Yin, J H; You, Z Y; Yu, B X; Yu, C X; Yu, G; Yu, J S; Yu, T; Yuan, C Z; Yuan, L; Yuan, X Q; Yuan, Y; Yuan, Z Y; Yue, C X; Yuncu, A; Zafar, A A; Zeng, X; Zeng, Y; Zhang, A Q; Zhang, B X; Zhang, Guangyi; Zhang, H; Zhang, H H; Zhang, H H; Zhang, H Y; Zhang, J J; Zhang, J L; Zhang, J Q; Zhang, J W; Zhang, J Y; Zhang, J Z; Zhang, Jianyu; Zhang, Jiawei; Zhang, L M; Zhang, L Q; Zhang, Lei; Zhang, S; Zhang, S F; Zhang, Shulei; Zhang, X D; Zhang, X Y; Zhang, Y; Zhang, Y H; Zhang, Y T; Zhang, Yan; Zhang, Yao; Zhang, Yi; Zhang, Z H; Zhang, Z Y; Zhao, 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; Zhemchugov, A; Zheng, B; Zheng, J P; Zheng, Y; Zheng, Y H; Zhong, B; Zhong, C; Zhou, L P; Zhou, Q; Zhou, X; Zhou, X K; Zhou, X R; Zhou, X Y; Zhu, A N; Zhu, J; Zhu, K; Zhu, K J; Zhu, S H; Zhu, T J; Zhu, W J; Zhu, W J; Zhu, Y C; Zhu, Z A; Zou, B S; Zou, J H
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simulazione ASN
Il report seguente simula gli indicatori relativi alla produzione scientifica in relazione alle soglie ASN 2018-2020 del proprio SC/SSD. Si ricorda che il superamento dei valori soglia (almeno 2 su 3) è requisito necessario ma non sufficiente al conseguimento dell'abilitazione.
La simulazione si basa sui dati IRIS e presenta gli indicatori calcolati alla data indicata sul report. Si ricorda che in sede di domanda ASN presso il MIUR gli indicatori saranno invece calcolati a partire dal 1° gennaio rispettivamente del quinto/decimo/quindicesimo anno precedente la scadenza del quadrimestre di presentazione della domanda (art 2 del DM 598/2018).
In questa simulazione pertanto il valore degli indicatori potrà differire da quello conteggiato all’atto della domanda ASN effettuata presso il MIUR a seguito di:
Correzioni imputabili a eventuali periodi di congedo obbligatorio, che in sede di domanda ASN danno diritto a incrementi percentuali dei valori.
Presenza di eventuali errori di catalogazione e/o dati mancanti in IRIS
Variabilità nel tempo dei valori citazionali (per i settori bibliometrici)
Variabilità della finestra temporale considerata in funzione della sessione di domanda ASN a cui si partecipa.
La presente simulazione è stata realizzata sulla base delle regole riportate nel DM 598/2018 e dell'allegata Tabella A e delle specifiche definite all'interno del Focus Group Cineca relativo al modulo IRIS ER. Il Cineca non si assume alcuna responsabilità in merito all'uso che il diretto interessato o terzi faranno della simulazione.