6 results on '"G. S. Li"'
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2. Probing ^{93m}Mo Isomer Depletion with an Isomer Beam
- Author
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S, Guo, B, Ding, X H, Zhou, Y B, Wu, J G, Wang, S W, Xu, Y D, Fang, C M, Petrache, E A, Lawrie, Y H, Qiang, Y Y, Yang, H J, Ong, J B, Ma, J L, Chen, F, Fang, Y H, Yu, B F, Lv, F F, Zeng, Q B, Zeng, H, Huang, Z H, Jia, C X, Jia, W, Liang, Y, Li, N W, Huang, L J, Liu, Y, Zheng, W Q, Zhang, A, Rohilla, Z, Bai, S L, Jin, K, Wang, F F, Duan, G, Yang, J H, Li, J H, Xu, G S, Li, M L, Liu, Z, Liu, Z G, Gan, M, Wang, and Y H, Zhang
- Abstract
The isomer depletion of ^{93m}Mo was recently reported [Chiara et al., Nature (London) 554, 216 (2018)NATUAS0028-083610.1038/nature25483] as the first direct observation of nuclear excitation by electron capture (NEEC). However, the measured excitation probability of 1.0(3)% is far beyond the theoretical expectation. In order to understand the inconsistency between theory and experiment, we produce the ^{93m}Mo nuclei using the ^{12}C(^{86}Kr,5n) reaction at a beam energy of 559 MeV and transport the reaction residues to a detection station far away from the target area employing a secondary beam line. The isomer depletion is expected to occur during the slowdown process of the ions in the stopping material. In such a low γ-ray background environment, the signature of isomer depletion is not observed, and an upper limit of 2×10^{-5} is estimated for the excitation probability. This is consistent with the theoretical expectation. Our findings shed doubt on the previously reported NEEC phenomenon and highlight the necessity and feasibility of further experimental investigations for reexamining the isomer depletion under low γ-ray background.
- Published
- 2022
3. New α-Emitting Isotope ^{214}U and Abnormal Enhancement of α-Particle Clustering in Lightest Uranium Isotopes
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Z Y, Zhang, H B, Yang, M H, Huang, Z G, Gan, C X, Yuan, C, Qi, A N, Andreyev, M L, Liu, L, Ma, M M, Zhang, Y L, Tian, Y S, Wang, J G, Wang, C L, Yang, G S, Li, Y H, Qiang, W Q, Yang, R F, Chen, H B, Zhang, Z W, Lu, X X, Xu, L M, Duan, H R, Yang, W X, Huang, Z, Liu, X H, Zhou, Y H, Zhang, H S, Xu, N, Wang, H B, Zhou, X J, Wen, S, Huang, W, Hua, L, Zhu, X, Wang, Y C, Mao, X T, He, S Y, Wang, W Z, Xu, H W, Li, Z Z, Ren, and S G, Zhou
- Abstract
A new α-emitting isotope ^{214}U, produced by the fusion-evaporation reaction ^{182}W(^{36}Ar,4n)^{214}U, was identified by employing the gas-filled recoil separator SHANS and the recoil-α correlation technique. More precise α-decay properties of even-even nuclei ^{216,218}U were also measured in the reactions of ^{40}Ar, ^{40}Ca beams with ^{180,182,184}W targets. By combining the experimental data, improved α-decay reduced widths δ^{2} for the even-even Po-Pu nuclei in the vicinity of the magic neutron number N=126 are deduced. Their systematic trends are discussed in terms of the N_{p}N_{n} scheme in order to study the influence of proton-neutron interaction on α decay in this region of nuclei. It is strikingly found that the reduced widths of ^{214,216}U are significantly enhanced by a factor of two as compared with the N_{p}N_{n} systematics for the 84≤Z≤90 and N126 even-even nuclei. The abnormal enhancement is interpreted by the strong monopole interaction between the valence protons and neutrons occupying the π1f_{7/2} and ν1f_{5/2} spin-orbit partner orbits, which is supported by the large-scale shell model calculation.
- Published
- 2021
4. Measurement of the Spectral Shape of the β -Decay of Xe137 to the Ground State of Cs137 in EXO-200 and Comparison with Theory
- Author
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T. Tolba, E. V. Hansen, Qing Xia, A. Jamil, A. Pocar, S. Thibado, V. Veeraraghavan, C. Chambers, R. DeVoe, Petr Vogel, David Leonard, R. MacLellan, Thomas Koffas, D. Fudenberg, W. M. Fairbank, M. Coon, J. Davis, M. J. Jewell, T. Daniels, F. Retiere, V.N. Stekhanov, L. J. Kaufman, J. Farine, Jouni Suhonen, A. Piepke, J. Todd, R. Tsang, M. J. Dolinski, Jens Dilling, O. Nusair, L. Darroch, R. Krücken, U. Wichoski, M. Hughes, I. Badhrees, K. Skarpaas, J. Hoessl, V. Belov, A. Robinson, T. Bhatta, A. S. Johnson, T. Ziegler, S. Feyzbakhsh, W. R. Cen, K. Murray, S. Al Kharusi, O. Ya. Zeldovich, G. S. Li, R. Gornea, Martin Breidenbach, M. Wagenpfeil, Gisela Anton, P. Hufschmidt, David A. Sinclair, P. C. Rowson, S. X. Wu, B. Mong, J. L. Vuilleumier, Arun Kumar Soma, C. Licciardi, A. Der Mesrobian-Kabakian, Yuehe Lin, S. J. Daugherty, A. Odian, L. Yang, David Moore, Y. Lan, S. Delaquis, Z. Li, Guofu Cao, Giorgio Gratta, A. Larson, T. Brunner, C. R. Hall, A. Dolgolenko, Thilo Michel, C. Jessiman, I. Ostrovskiy, P. Nakarmi, A. Craycraft, K. S. Kumar, B. T. Cleveland, A. Kuchenkov, O. Njoya, B. G. Lenardo, J. Watkins, A. Iverson, D. R. Yahne, T. McElroy, A. Karelin, Shu Li, S. Schmidt, L. J. Wen, Marc Weber, D. Fairbank, B. Veenstra, J. Kostensalo, J. Echevers, Peter Fierlinger, T. I. Totev, Gerrit Wrede, M. Tarka, Douglas H Beck, P. S. Barbeau, Y-R Yen, D. Ruddell, J. Runge, and P. Gautam
- Subjects
Physics ,Spectral shape analysis ,General Physics and Astronomy ,Nuclear data ,Context (language use) ,Electron ,7. Clean energy ,01 natural sciences ,Spectral line ,0103 physical sciences ,Neutron source ,Atomic physics ,010306 general physics ,Ground state ,Energy (signal processing) - Abstract
We report on a comparison between the theoretically predicted and experimentally measured spectra of the first-forbidden nonunique β-decay transition ^{137}Xe(7/2^{-})→^{137}Cs(7/2^{+}). The experimental data were acquired by the EXO-200 experiment during a deployment of an AmBe neutron source. The ultralow background environment of EXO-200, together with dedicated source deployment and analysis procedures, allowed for collection of a pure sample of the decays, with an estimated signal to background ratio of more than 99 to 1 in the energy range from 1075 to 4175 keV. In addition to providing a rare and accurate measurement of the first-forbidden nonunique β-decay shape, this work constitutes a novel test of the calculated electron spectral shapes in the context of the reactor antineutrino anomaly and spectral bump.
- Published
- 2020
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5. Measurement of the Spectral Shape of the β-Decay of ^{137}Xe to the Ground State of ^{137}Cs in EXO-200 and Comparison with Theory
- Author
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S, Al Kharusi, G, Anton, I, Badhrees, P S, Barbeau, D, Beck, V, Belov, T, Bhatta, M, Breidenbach, T, Brunner, G F, Cao, W R, Cen, C, Chambers, B, Cleveland, M, Coon, A, Craycraft, T, Daniels, L, Darroch, S J, Daugherty, J, Davis, S, Delaquis, A, Der Mesrobian-Kabakian, R, DeVoe, J, Dilling, A, Dolgolenko, M J, Dolinski, J, Echevers, W, Fairbank, D, Fairbank, J, Farine, S, Feyzbakhsh, P, Fierlinger, D, Fudenberg, P, Gautam, R, Gornea, G, Gratta, C, Hall, E V, Hansen, J, Hoessl, P, Hufschmidt, M, Hughes, A, Iverson, A, Jamil, C, Jessiman, M J, Jewell, A, Johnson, A, Karelin, L J, Kaufman, T, Koffas, J, Kostensalo, R, Krücken, A, Kuchenkov, K S, Kumar, Y, Lan, A, Larson, B G, Lenardo, D S, Leonard, G S, Li, S, Li, Z, Li, C, Licciardi, Y H, Lin, R, MacLellan, T, McElroy, T, Michel, B, Mong, D C, Moore, K, Murray, P, Nakarmi, O, Njoya, O, Nusair, A, Odian, I, Ostrovskiy, A, Piepke, A, Pocar, F, Retière, A L, Robinson, P C, Rowson, D, Ruddell, J, Runge, S, Schmidt, D, Sinclair, K, Skarpaas, A K, Soma, V, Stekhanov, J, Suhonen, M, Tarka, S, Thibado, J, Todd, T, Tolba, T I, Totev, R, Tsang, B, Veenstra, V, Veeraraghavan, P, Vogel, J-L, Vuilleumier, M, Wagenpfeil, J, Watkins, M, Weber, L J, Wen, U, Wichoski, G, Wrede, S X, Wu, Q, Xia, D R, Yahne, L, Yang, Y-R, Yen, O Ya, Zeldovich, and T, Ziegler
- Abstract
We report on a comparison between the theoretically predicted and experimentally measured spectra of the first-forbidden nonunique β-decay transition ^{137}Xe(7/2^{-})→^{137}Cs(7/2^{+}). The experimental data were acquired by the EXO-200 experiment during a deployment of an AmBe neutron source. The ultralow background environment of EXO-200, together with dedicated source deployment and analysis procedures, allowed for collection of a pure sample of the decays, with an estimated signal to background ratio of more than 99 to 1 in the energy range from 1075 to 4175 keV. In addition to providing a rare and accurate measurement of the first-forbidden nonunique β-decay shape, this work constitutes a novel test of the calculated electron spectral shapes in the context of the reactor antineutrino anomaly and spectral bump.
- Published
- 2020
6. Observation of e(+)e(-)→π(0)π(0)hc and a neutral charmoniumlike structure Zc(4020)(0)
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Ablikim, M, Achasov, M. N, X. C, Ai, Albayrak, O, Albrecht, M, Ambrose, D. J, Amoroso, A, F. F, An, An, Q, Bai, J. Z, Baldini Ferroli, R, Ban, Y, Bennett, D. W, Bennett, J. V, Bertani, M, Bettoni, D, Bian, J. M, Bianchi, F, Boger, E, Bondarenko, O, Boyko, I, Briere, R. A, Cai, H, Cai, X, Cakir, O, Calcaterra, A, Cao, G. F, Cetin, S. A, Chang, J. F, Chelkov, G, Chen, G, Chen, H. S, Chen, H. Y, Chen, J. C, Chen, M. L, Chen, S. J, Chen, X, Chen, X. R, Chen, Y. B, Cheng, H. P, Chu, X. K, Chu, Y. P, Cibinetto, G, Cronin Hennessy, D, Dai, H. L, Dai, J. P, 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, S. X, Du, Duan, P. F, Fan, J. Z, Fang, J, Fang, S. S, Fang, X, Fang, Y, Fava, L, Feldbauer, F, Felici, G, Feng, C. Q, Fioravanti, E, C. D, Fu, Gao, Q, Gao, Y, Garzia, I, Goetzen, K, Gong, W. X, Gradl, W, Greco, M, M. H, Gu, Y. T, Gu, Guan, Y. H, Guo, A. Q, Guo, L. B, Guo, T, Guo, Y, Guo, Y. P, Haddadi, Z, Hafner, A, Han, S, Han, Y. L, Harris, F. A, K. L, He, Z. Y, He, Held, T, Heng, Y. K, Hou, Z. L, Hu, C, H. M, Hu, J. F, Hu, Hu, T, Hu, Y, Huang, G. M, Huang, G. S, Huang, H. P, Huang, J. S, Huang, X. T, Huang, Y, Hussain, T, Ji, Q, Q. P, Ji, X. B, Ji, X. L, Ji, Jiang, L. L, Jiang, L. W, Jiang, X. S, Jiao, J. B, Jiao, Z, Jin, D. P, Jin, S, Johansson, T, Julin, A, Kalantar Nayestanaki, N, Kang, X. L, Kang, X. S, Kavatsyuk, M, B. C, Ke, Kliemt, R, Kloss, B, Kolcu, O. B, Kopf, B, Kornicer, M, Kuehn, W, Kupsc, A, Lai, W, Lange, J. S, Lara, M, Larin, P, Leyhe, M, Cheng, Li, D. M, Li, Li, F, Li, G, H. B, Li, J. C, Li, Jin, Li, Li, K, Q. J, Li, Li, T, W. D, Li, W. G, Li, X. L, Li, X. M, Li, X. N, Li, X. Q, Li, Z. B, Li, Liang, H, Liang, Y. F, Liang, Y. T, Liao, G. R, Lin, D. X, Liu, B. J, Liu, C. L, Liu, C. X, Liu, F. H, Liu, Fang, Liu, Feng, Liu, H. B, Liu, H. H, Liu, H. M, Liu, J, Liu, J. P, Liu, J. Y, Liu, K, Liu, K. Y, Liu, L. D, Liu, Q, Liu, S. B, Liu, X, Liu, X. X, Liu, Y. B, Liu, Z. A, Liu, Zhiqiang, Liu, Zhiqing, Loehner, H, Lou, X. C, H. J, Lu, J. G, Lu, R. Q, Lu, Lu, Y, Y. P, Lu, Luo, C. L, Luo, M. X, Luo, T, Luo, X. L, Lv, M, Lyu, X. R, F. C, Ma, H. L, Ma, Q. M, Ma, Ma, S, Ma, T, X. N, Ma, X. Y, Ma, Maas, F. E, Maggiora, M, Malik, Q. A, Mao, Y. J, Mao, Z. P, Marcello, S, Messchendorp, J. G, Min, J, Min, T. J, Mitchell, R. E, X. H, Mo, Y. J, Mo, Moeini, H, Morales Morales, C, Moriya, K, Muchnoi, N. Yu, Muramatsu, H, Nefedov, Y, Nerling, F, Nikolaev, I. B, Ning, Z, Nisar, S, Niu, S. L, Niu, X. Y, Olsen, S. L, Ouyang, Q, Pacetti, Simone, Patteri, P, Pelizaeus, M, Peng, H. P, Peters, K, Ping, J. L, Ping, R. G, Poling, R, Y. N, Pu, Qi, M, Qian, S, Qiao, C. F, Qin, L. Q, Qin, N, Qin, X. S, Qin, Y, Qin, Z. H, Qiu, J. F, Rashid, K. H, Redmer, C. F, Ren, H. L, Ripka, M, Rong, G, Ruan, X. D, Santoro, V, Sarantsev, A, Savrié, M, Schoenning, K, Schumann, S, Shan, W, Shao, M, Shen, C. P, Shen, P. X, Shen, X. Y, Sheng, H. Y, Shepherd, M. R, Song, W. M, Song, X. Y, Sosio, S, Spataro, S, Spruck, B, Sun, G. X, Sun, J. F, Sun, S. S, Sun, Y. J, Sun, Y. Z, Sun, Z. J, Sun, Z. T, Tang, C. J, Tang, X, Tapan, I, Thorndike, E. H, Tiemens, M, Toth, D, Ullrich, M, Uman, I, Varner, G. S, Wang, B, Wang, B. L, Wang, D, Wang, D. Y, Wang, K, Wang, L. L, Wang, L. S, Wang, M, Wang, P, Wang, P. L, Wang, Q. J, Wang, S. G, Wang, W, Wang, X. F, Wang, Y. D, Wang, Y. F, Wang, Y. Q, Wang, Z, Wang, Z. G, Wang, Z. H, Wang, Z. Y, Wei, D. H, Wei, J. B, Weidenkaff, P, Wen, S. P, Wiedner, U, Wolke, M, L. H, Wu, Wu, Z, Xia, L. G, Xia, Y, Xiao, D, Xiao, Z. J, Xie, Y. G, Xiu, Q. L, G. F, Xu, Xu, L, Q. J, Xu, Q. N, Xu, X. P, Xu, Xue, Z, Yan, L, Yan, W. B, Yan, W. C, Yan, Y. H, Yang, H. X, Yang, L, Yang, Y, Yang, Y. X, Ye, H, Ye, M, M. H, Ye, Yin, J. H, B. X, Yu, C. X, Yu, H. W, Yu, J. S, Yu, Yuan, C. Z, Yuan, W. L, Yuan, Y, Yuncu, A, Zafar, A. A, Zallo, A, Zeng, Y, Zhang, B. X, Zhang, B. Y, Zhang, C, Zhang, C. C, Zhang, D. H, Zhang, H. H, Zhang, H. T, Zhang, H. Y, Zhang, J. J, Zhang, J. L, Zhang, J. Q, Zhang, J. W, Zhang, J. Y, Zhang, J. Z, Zhang, K, Zhang, L, Zhang, S. H, Zhang, X. J, Zhang, X. Y, Zhang, Y, Zhang, Y. H, Zhang, Z. H, Zhang, Z. P, Zhang, Z. Y, Zhao, G, Zhao, J. W, Zhao, J. Y, Zhao, J. Z, Zhao, Lei, Zhao, Ling, Zhao, M. G, Zhao, Q, Zhao, Q. W, Zhao, S. J, Zhao, T. C, Zhao, Y. B, Zhao, Z. G, Zhemchugov, A, Zheng, B, Zheng, J. P, Zheng, Y. H, Zhong, B, Zhou, L, Zhou, Li, Zhou, X, Zhou, X. K, Zhou, X. R, Zhou, X. Y, Zhu, K, Zhu, K. J, Zhu, S, Zhu, X. L, Zhu, Y. C, Zhu, Y. S, Zhu, Z. A, Zhuang, J, Zou, B. S, Zou, J. H., İstanbul Arel Üniversitesi, and [Chen, H. Y. -- Fang, S. S. -- Heng, Y. K. -- Hou, Z. L. -- Hu, H. M. -- Hu, T. -- Ji, Q. -- Ji, X. B. -- Ji, X. L. -- Jiang, L. L. -- Jiang, X. S. -- Jin, D. P. -- Jin, S. -- Kang, X. L. -- Kang, X. S. -- Lai, W. -- Li, F. -- Li, G. -- Li, H. B. -- Li, J. C. -- Li, Q. J. -- Li, W. D. -- Li, W. G. -- Li, X. N. -- Liang, Y. F. -- Liu, B. J. -- Liu, C. X. -- Liu, Fang -- Liu, H. M. -- Liu, J. -- Liu, Z. A. -- Liu, Zhiqiang -- Lu, J. G. -- Lu, Y. -- Lu, Y. P. -- Luo, X. L. -- Lv, M. -- Ma, H. L. -- Ma, Q. M. -- Ma, S. -- Ma, T. -- Ma, X. Y. -- Mao, Z. P. -- Min, J. -- Min, T. J. -- Mo, X. H. -- Ning, Z. -- Niu, X. Y. -- Ouyang, Q. -- Ping, R. G. -- Qian, S. -- Qin, Z. H. -- Qiu, J. F. -- Rong, G. -- Shen, X. Y. -- Sheng, H. Y. -- Song, W. M. -- Song, X. Y. -- Sun, G. X. -- Sun, Y. Z. -- Sun, Z. J. -- Tang, X. -- Wang, L. L. -- Wang, L. S. -- Wang, P. -- Wang, P. L. -- Wang, Q. J. -- Wang, W. -- Wang, Y. F. -- Wang, Z. -- Wang, Z. G. -- Wang, Z. Y. -- Wen, S. P. -- Wu, L. H. -- Wu, Z. -- Xiao, D. -- Xiao, Z. J. -- Xie, Y. G. -- Xiu, Q. L. -- Xu, G. F. -- Xu, L. -- Xue, Z. -- Yang, H. X. -- Ye, H. -- Ye, M. -- Yu, B. X. -- Yuan, C. Z. -- Yuan, Y. -- Zhang, B. X. -- Zhang, B. Y. -- Zhang, C. C. -- Zhang, D. H. -- Zhang, H. Y. -- Zhang, J. Q. -- Zhang, J. W. -- Zhang, J. Y. -- Zhang, J. Z. -- Zhang, S. H. -- Zhang, X. J. -- Zhang, Y. -- Zhang, Y. H. -- Zhao, G. -- Zhao, J. W. -- Zhao, Q. W. -- Zhao, T. C. -- Zhao, Y. B. -- Zhao, Z. G. -- Zheng, J. P. -- Zhou, L. -- Zhou, X. Y. -- Zhu, K. -- Zhu, K. J. -- Zhu, Y. S. -- Zhu, Z. A. -- Zhuang, J. -- Zou, B. S. -- Zou, J. H.] Inst High Energy Phys, Beijing 100049, Peoples R China -- [Shen, C. P.] Beihang Univ, Beijing 100191, Peoples R China -- [Albrecht, M. -- Held, T. -- Kopf, B. -- Leyhe, M. -- Pelizaeus, M. -- Wiedner, U.] Ruhr Univ Bochum, D-44780 Bochum, Germany -- [Albayrak, O. -- Briere, R. A. -- Liu, C. L.] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA -- [Huang, G. M. -- Liu, Feng -- Mo, Y. J. -- Yang, Y. -- Zhang, Z. H.] Cent China Normal Univ, Wuhan 430079, Peoples R China -- [Ye, M. H.] China Ctr Adv Sci & Technol, Beijing 100190, Peoples R China -- [Nisar, S.] COMSATS Inst Informat Technol, Lahore 54000, Pakistan -- [Achasov, M. N. -- Muchnoi, N. Yu. -- Nikolaev, I. B.] GI Budker Inst Nucl Phys SB RAS BINP, Novosibirsk 630090, Russia -- [Goetzen, K. -- Peters, K.] GSI Helmholtzctr Heavy Ion Res GmbH, D-64291 Darmstadt, Germany -- [Wei, D. H. -- Yang, H. X.] Guangxi Normal Univ, Guilin 541004, Peoples R China -- [Gu, Y. T. -- Liu, H. B. -- Ruan, X. D.] Guangxi Univ, Nanning 530004, Peoples R China -- [Li, K. -- Xu, Q. J.] Hangzhou Normal Univ, Hangzhou 310036, Zhejiang, Peoples R China -- [Larin, P. -- Lin, D. X. -- Maas, F. E. -- Morales Morales, C. -- Nerling, F.] Helmholtz Inst Mainz, D-55099 Mainz, Germany -- [Huang, J. S. -- Liao, G. R. -- Sun, J. F.] Henan Normal Univ, Xinxiang 453007, Peoples R China -- [Liu, H. H.] Henan Univ Sci & Technol, Luoyang 471003, Peoples R China -- [Cheng, H. P. -- Jiao, Z. -- Lu, H. J.] Huangshan Coll, Huangshan 245000, Peoples R China -- [Xia, Y. -- Yan, Y. H. -- Zhang, Y.] Hunan Univ, Changsha 410082, Hunan, Peoples R China -- [Bennett, D. W. -- Bennett, J. V. -- Lara, M. -- Mitchell, R. E. -- Moriya, K. -- Shepherd, M. R.] Indiana Univ, Bloomington, IN 47405 USA -- [Ferroli, R. Baldini -- Bertani, M. -- Calcaterra, A. -- Wang, Y. D. -- Zallo, A.] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy -- [Pacetti, S.] Ist Nazl Fis Nucl, I-06100 Perugia, Italy -- [Pacetti, S.] Univ Perugia, I-06100 Perugia, Italy -- [Bettoni, D. -- Cibinetto, G. -- Fioravanti, E. -- Garzia, I. -- Santoro, V.] Ist Nazl Fis Nucl, Sez Ferrara, I-44122 Ferrara, Italy -- [Savrie, M.] Univ Ferrara, I-44122 Ferrara, Italy -- [Denig, A. -- Feldbauer, F. -- Hafner, A. -- Kloss, B. -- Liu, Zhiqiang -- Redmer, C. F. -- Ripka, M. -- Schumann, S. -- Wang, Y. Q. -- Weidenkaff, P.] Johannes Gutenberg Univ Mainz, D-55099 Mainz, Germany -- [Boger, E. -- Boyko, I. -- Chelkov, G. -- Dedovich, D. -- Nefedov, Y. -- Sarantsev, A. -- Zhemchugov, A.] Joint Inst Nucl Res, Dubna 141980, Russia -- [Kuehn, W. -- Lange, J. S. -- Liang, Y. T. -- Spruck, B. -- Ullrich, M.] Univ Giessen, Inst Phys 2, D-35392 Giessen, Germany -- [Bondarenko, O. -- Haddadi, Z. -- Kalantar-Nayestanaki, N. -- Kavatsyuk, M. -- Loehner, H. -- Messchendorp, J. G. -- Moeini, H. -- Tiemens, M.] Univ Groningen, KVI CART, NL-9747 AA Groningen, Netherlands -- [Chen, X. R. -- Liu, X. -- Yu, J. S.] Lanzhou Univ, Lanzhou 730000, Peoples R China -- [Ding, Y. -- Liu, K. Y. -- Ma, F. C.] Liaoning Univ, Shenyang 110036, Peoples R China -- [Guo, L. B. -- Guo, T. -- Hu, C. -- Luo, C. L. -- Ping, J. L. -- Xiao, Z. J. -- Zhong, B.] Nanjing Normal Univ, Nanjing 210023, Jiangsu, Peoples R China -- [Chen, S. J. -- Huang, Y. -- Qi, M. -- Zhang, C.] Nanjing Univ, Nanjing 210093, Jiangsu, Peoples R China -- [Dong, C. -- He, Z. Y. -- Ji, Q. P. -- Kang, X. S. -- Li, X. Q. -- Liu, Y. B. -- Ma, X. N. -- Shen, P. X. -- Wang, B. -- Yu, C. X. -- Zhao, M. G. -- Zhou, Li] Nankai Univ, Tianjin 300071, Peoples R China -- [Ban, Y. -- Chu, X. K. -- Liu, L. D. -- Mao, Y. J. -- Qin, Y. -- Shan, W. -- Wang, D. -- Wang, D. Y. -- Wang, S. G. -- Wei, J. B. -- Yu, H. W.] Peking Univ, Beijing 100871, Peoples R China -- [Li, Jin -- Olsen, S. L.] Seoul Natl Univ, Seoul 151747, South Korea -- [Huang, X. T. -- Jiao, J. B. -- Li, K. -- Li, T. -- Li, X. L. -- Qin, L. Q. -- Zhang, X. Y.] Shandong Univ, Jinan 250100, Peoples R China -- [Liu, F. H.] Shanxi Univ, Taiyuan 030006, Peoples R China -- [Liang, Y. F. -- Tang, C. J.] Sichuan Univ, Chengdu 610064, Peoples R China -- [Xu, X. P.] Suzhou Univ, Suzhou 215006, Peoples R China -- [Li, Z. B. -- Zhang, H. H.] Sun Yat Sen Univ, Guangzhou 510275, Guangdong, Peoples R China -- [Fan, J. Z. -- Gao, Y. -- Liu, K. -- Wang, X. F. -- Xia, L. G. -- Zhu, X. L.] Tsinghua Univ, Beijing 100084, Peoples R China -- [Cakir, O.] Ankara Univ, TR-06100 Ankara, Turkey -- [Cetin, S. A. -- Kolcu, O. B. -- Uman, I. -- Yuncu, A.] Dogus Univ, TR-34722 Istanbul, Turkey -- [Tapan, I.] Uludag Univ, TR-16059 Bursa, Turkey -- [Liu, Q. -- Liu, X. X. -- Lyu, X. R. -- Wang, B. L. -- Xu, Q. N. -- Zheng, Y. H.] Univ Chinese Acad Sci, Beijing 100049, Peoples R China -- [Harris, F. A. -- Kornicer, M. -- Luo, T. -- Varner, G. S.] Univ Hawaii, Honolulu, HI 96822 USA -- [Bian, J. M. -- Cronin-Hennessy, D. -- Julin, A. -- Muramatsu, H. -- Toth, D.] Univ Minnesota, Minneapolis, MN 55455 USA -- [Ambrose, D. J. -- Thorndike, E. H.] Univ Rochester, Rochester, NY 14627 USA -- [An, Q. -- Fang, X. -- Huang, G. S. -- Li, Cheng -- Liang, H. -- Liu, S. B. -- Peng, H. P. -- Shao, M. -- Sun, Y. J. -- Wang, Z. H. -- Yan, L. -- Yan, W. B. -- Yan, W. C. -- Zhang, Z. P. -- Zhao, Lei -- Zhao, Z. G. -- Zhou, X. K. -- Zhou, X. R. -- Zhu, Y. C.] Univ Sci & Technol China, Hefei 230026, Peoples R China -- [Zheng, B.] Univ South China, Hengyang 421001, Peoples R China -- [Hussain, T. -- Malik, Q. A. -- Rashid, K. H. -- Zafar, A. A.] Univ Punjab, Lahore 54590, Pakistan -- [Amoroso, A. -- Bianchi, F. -- Destefanis, M. -- De Mori, F. -- Greco, M. -- Hu, J. F. -- Maggiora, M. -- Marcello, S. -- Sosio, S. -- Spataro, S.] Univ Turin, I-10125 Turin, Italy -- [Fava, L.] Univ Piemonte Orientale, I-15121 Alessandria, Italy -- [Amoroso, A. -- Bianchi, F. -- Destefanis, M. -- De Mori, F. -- Fava, L. -- Greco, M. -- Maggiora, M. -- Marcello, S. -- Sosio, S. -- Spataro, S.] Ist Nazl Fis Nucl, I-10125 Turin, Italy -- [Johansson, T. -- Kupsc, A. -- Schoenning, K. -- Wolke, M.] Uppsala Univ, SE-75120 Uppsala, Sweden -- [Huang, H. P. -- Liu, J. P. -- Qin, N. -- Yang, L. -- Zhang, Z. Y. -- Zhou, X.] Wuhan Univ, Wuhan 430072, Peoples R China -- [Luo, M. X.] Zhejiang Univ, Hangzhou 310027, Zhejiang, Peoples R China -- [Du, S. X. -- Li, D. M. -- Zhao, S. J.] Zhengzhou Univ, Zhengzhou 450001, Peoples R China -- [Achasov, M. N. -- Muchnoi, N. Yu. -- Nikolaev, I. 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- Abstract
WOS: 000345356900003, PubMed ID: 25479489, Using data collected with the BESIII detector operating at the Beijing Electron Positron Collider at center-of-mass energies of root s = 4.23, 4.26, and 4.36 GeV, we observe e(+)e(-) -> pi(0)pi(0)h(c) for the first time. The Born cross sections are measured and found to be about half of those of e(+)e(-) -> pi(+)pi(-)h(c) within less than 2 sigma. In the pi(0)h(c) mass spectrum, a structure at 4.02 GeV/c(2) is found. It is most likely to be the neutral isospin partner of the Z(c)(4020)(+/-) observed in the process of e(+)e(-) -> pi(+)pi(-)h(c) being found. A fit to the pi(0)h(c) invariant mass spectrum, with the width of the Z(c)(4020)(0) fixed to that of its charged isospin partner and possible interferences with non-Z(c)(4020)(0) amplitudes neglected, gives a mass of (4023.9 +/- 2.2 +/- 3.8) MeV/c(2) for the Z(c)(4020)(0), where the first error is statistical and the second systematic., National Key Basic Research Program of China [2015CB856700]; Joint Funds of the National Natural Science Foundation of China [11079008, 11179007, U1232201, U1332201]; National Natural Science Foundation of China (NSFC) [10935007, 11121092, 11125525, 11235011, 11079023, 11322544, 11335008]; Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program; CAS [KJCX2-YW-N29, KJCX2-YW-N45]; 100 Talents Program of CAS; German Research Foundation DFG [Collaborative Research Center CRC-1044]; Istituto Nazionale di Fisica Nucleare, Italy; Ministry of Development of Turkey [DPT2006K-120470]; Russian Foundation for Basic Research [14-07-91152]; U.S. Department of Energy [DE-FG02-04ER41291, DE-FG02-05ER41374, DE-FG02-94ER40823, DESC0010118]; U.S. National Science Foundation; University of Groningen (RuG); Helmholtzzentrum fuer Schwerionenforschung GmbH (GSI), Darmstadt; WCU Program of National Research Foundation of Korea [R32-2008-000-10155-0], The BESIII Collaboration thanks the staff of BEPCII and the IHEP computing center for their strong support. This work is supported in part by National Key Basic Research Program of China under Contract No. 2015CB856700; Joint Funds of the National Natural Science Foundation of China under Contracts No. 11079008, No. 11179007, No. U1232201, No. U1332201; National Natural Science Foundation of China (NSFC) under Contracts No. 10935007, No. 11121092, No. 11125525, No. 11235011, No. 11079023, No. 11322544, No. 11335008; the Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program; CAS under Contracts No. KJCX2-YW-N29, No. KJCX2-YW-N45; 100 Talents Program of CAS; German Research Foundation DFG under Contract No. Collaborative Research Center CRC-1044; Istituto Nazionale di Fisica Nucleare, Italy; Ministry of Development of Turkey under Contract No. DPT2006K-120470; Russian Foundation for Basic Research under Contract No. 14-07-91152; U.S. Department of Energy under Contracts No. DE-FG02-04ER41291, No. DE-FG02-05ER41374, No. DE-FG02-94ER40823, No. DESC0010118; U.S. National Science Foundation; University of Groningen (RuG) and the Helmholtzzentrum fuer Schwerionenforschung GmbH (GSI), Darmstadt; WCU Program of National Research Foundation of Korea under Contract No. R32-2008-000-10155-0.
- Published
- 2014
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