Y. N. Gao
Tsinghua University
1184 Papers
10.1K Citations
Y. N. Gao is an academic researcher from Tsinghua University. The author has contributed to research in topics: Branching fraction & Meson. The author has an hindex of 76, co-authored 952 publications. Previous affiliations of Y. N. Gao include Jinan University & Chinese Academy of Sciences.
Chat about Author
Papers
Measurement of the branching fractions for J/psi ---> gamma pi0, gamma eta and gamma eta-prime
M. Ablikim,S. S. Fang,H. X. Yang,M. G. Zhao,L. P. Zhou,F. C. Ma,Y. S. Dai,Z. P. Zhang,F. Liu,H. L. Ma,Y. F. Lai,C. P. Shen,S. L. Olsen,B. J. Liu,Haiping Peng,J. W. Zhao,Z. J. Guo,Y. Z. Sun,W. G. Li,X. Tang,H. H. Liu,Q. Liu,Lianyou Shan,P. Wang,D. H. Wei,Hangxu Li,S. S. Sun,H. S. Sun,J. Fang,Xunchao Zhang,R. G. Ping,G. R. Lu,H. S. Chen,Z. Y. Ren,X. Y. Jiang,J. F. Qiu,Yu Zeng,J. Nie,W. D. Li,J. C. Li,D. H. Zhang,G. Rong,B. A. Zhuang,X. N. Li,D. Y. Wang,Huirun Chen,Y. F. Liang,S. P. Chi,Z. J. Sun,K. L. He,X. Q. Li,S. M. Li,H. M. Hu,Jinxing Zheng,Shang Lunlin,J. P. Liu,D. X. Zhao,G. L. Tong,Z. A. Zhu,Q. F. Dong,Z. A. Liu,Z. P. Zheng,Y. S. Zhu,L. S. Wang,S. H. Zhang,Yudan Wang,Z. Y. Deng,Q. M. Zhu,G. S. Varner,W. F. Wang,N. D. Qi,Y. P. Chu,H. Qin,Zujian Wang,X. Y. Shen,B.S. Zou,Z. Q. Tan,X. X. Xie,X. B. Ma,G. F. Xu,Xuai Zhuang,X. S. Jiang,C. Z. Yuan,Z. Y. Yi,X. H. Mo,Fang Liu,H. Q. Zhang,P. P. Zhao,M. Z. Wang,Z. Y. Wang,Y. T. Gu,X. M. Xia,Jin Chen,P. L. Wang,G. Li,J. C. Chen,L. L. Wang,J. P. Liu,H. B. Li,L. Y. Diao,C. X. Liu,M. L. Yan,R. G. Liu,F. Lu,Y. Ban,C. C. Zhang,J. G. Lu,H. Y. Zhang,R. Y. Li,Z. P. Mao,J. G. Bian,J. Y. Zhang,H. F. Chen,X. B. Ji,D. L. Shen,Y. C. Lou,Ning Zhou,Hongbo Liao,J. W. Zhang,X. Y. Zhang,L. S. Wang,Han-Qing Zheng,Z. G. Zhao,C. D. Fu,J. B. Jiao,Cunfeng Wei,Y. X. Ye,H. M. Liu,B. X. Zhang,Zheng Wang,B. Y. Zhang,Y. B. Chen,F. A. Harris,T. Hu,X. P. Xu,J. M. Yuan,X. T. Huang,Xingzhu Cui,Y. Q. Guo,Zhe Wang,G. S. Huang,C. S. Gao,Jianwei Sun,Miao He,Y. C. Xu,Yiyun Zhang,S. X. Du,S. Jin,Yi Jin,Y. N. Gao,Y. Yuan,K. J. Zhu,Y. X. Yang,H. Y. Sheng,J. Z. Bai,Y. C. Zhu,M. H. Ye,Q. M. Ma,Yingchun Zhu,Y. Li,W. R. Zhao,XZ（蔡翔舟） Cai,Y. Zeng,Y. K. Heng,S. D. Gu,D. P. Jin,C. L. Luo,X. L. Li,G. W. Yu,S. L. Zang,L. L. Ma,Y. N. Guo,N. Wu,J. B. Liu +173 more
TL;DR: In this paper, the decay modes of the BESII detector were analyzed using a data sample of 58 million $psi$ decays collected with the detector at BEPC and the branching fractions were determined to be: $Br(jpsi\ar\gamma\pi^0)=(3.13^{+0.65}_{-0.44}
16
Study of $\chi_{cJ}$ decaying into $\phi$ $K^*(892)$ $\bar{K}$
M. Ablikim,H. X. Yang,Z. P. Zhang,Huan Ren,T. Hussain,H. W. Yu,T. Held,G. S. Varner,F. H. Liu,Tao Li,W. X. Gong,Z. Y. He,X. Tang,W. Shan,Y. Hu,Q. A. Malik,Ling Zhao,J. F. Qiu,Z. Y. Zhang,S. Zhu,Jimin Zhao,R. A. Briere,H. B. Liu,P. F. Duan,Alexey Zhemchugov,K. Goetzen,Jie Yu,J. W. Zhang,S. L. Olsen,H. M. Hu,M. Kavatsyuk,Krisztian Peters,I. Tapan,Y. G. Xie,L. S. Wang,Y. N. Pu,X. C. Chen,Y. F. Wang,Z. Y. Deng,Serkant Ali Cetin,Haiping Peng,M. Z. Wang,S. Pacetti,B. Zheng,Z. G. Zhao,Y. J. Mao,Igor Boyko,S. X. Du,H. L. Dai,M. Destefanis,Guangming Huang,H. P. Cheng,Tao Luo,M. Albrecht,D. Y. Wang,Y. P. Guo,Y. B. Zhao,Cheng Li,P. L. Wang,T. Ma,Andrzej Kupsc,Q. Gao,H. Y. Zhang,Jie Zhao,K. Y. Liu,Cen Zhang,B. L. Wang,Yanping Huang,J. Y. Zhang,M. N. Achasov,D. X. Lin,Tobias Weber,C. H. Li,K. Moriya,K. Y. Liu,Ulrich Wiedner,Z. H. Wang,Y. J. Mo,Y. H. Guan,Jin Li,B. Y. Zhang,T. Hu,Xiao-Hai Liu,X. F. Wang,C. Dong,X. T. Huang,Z. B. Li,Z. Jiao,L. Zotti,H. P. Huang,E. Fioravanti,J. C. Li,Jialun Ping,R. E. Mitchell,Y. Guo,G. Rong,D. Bettoni,Zhiqing Zhang,Lei Li,S. Marcello,H. Y. Sheng,D. M. Li,Y. C. Zhu,Z. Ning,Y. J. Sun,Z. Haddadi,A. Calcaterra,Feng Liu,Xingguo Li,X. N. Ma,T. C. Zhao,S. S. Fang,L. P. Zhou,F. C. Ma,I. Uman,S. Sosio,A. Q. Guo,B. J. Liu,I. Garzia,C. Z. Yuan,L. G. Xia,Q. P. Ji,W. G. Li,L. Q. Qin,H. H. Liu,Q. An,Li Zhou,A. G. Denig,J. S. Lange,X. Y. Song,X. Y. Zhou,W. J. Zheng,S. W. Han,J. S. Huang,A. Zallo,C. X. Yu,A. Hafner,Dan Wang,Zhenli Xu,H. H. Zhang,C. D. Fu,O. Cakir,Z. J. Sun,K. L. He,J. Y. Liu,E. H. Thorndike,Jianping Zheng,J. P. Liu,M. Tiemens,M. Shao,Z. A. Zhu,M. Qi,Z. A. Liu,S. P. Wen,G. F. Cao,K. Schoenning,O. Bondarenko,O. Albayrak,X. K. Zhou,X. Y. Shen,J. Z. Zhang,Y. B. Liu,G. F. Xu,Cong-Feng Qiao,X. R. Chen,Z. Y. Wang,Y. T. Gu,Q. W. Zhao,J. C. Chen,H. B. Li,J. B. Jiao,Y. Nefedov,F. E. Maas,A. Amoroso,X. B. Ji,M. H. Ye,L. Fava,Fenfen An,G. Cibinetto,H. J. Lu,L. L. Jiang,X. Y. Niu,H. Liang,Y. H. Zheng,Y. Q. Wang,J. Q. Zhang,L. H. Wu,Zhe Sun,D. W. Bennett,B. X. Yu,Z. H. Qin,F. Bianchi,S. J. Zhao,Y. Ding,Gang Zhao,Zujian Wang,X. Cai,A. Dbeyssi,C. L. Luo,R. Baldini Ferroli,L. W. Jiang,Q. Ouyang,Y. Zhang,C. P. Shen,Li Yan,R. Kliemt,P. R. Li,M. X. Luo,C. F. Redmer,Y. S. Zhu,Zhiqing Liu,Q. Liu,M. Pelizaeus,J. L. Zhang,Q. P. Ji,Yao Wang,Xiaocong Ai,Y. P. Lu,H. L. Ma,J. Fang,Heng-Yun Ye,N. Qin,W. D. Li,X. L. Luo,L. D. Liu,L. Y. Dong,Jian Wei,Bibo Ke,B. Zhong,Z. J. Xiao,R. Poling,S. B. Liu,J. Min,X. K. Zhou,W. Gradl,H. S. Chen,T. J. Min,X. L. Kang,A. Sarantsev,X. Fang,Peilian Liu,L. B. Guo,Yunlong Zhang,Q. Zhao,W. C. Yan,B. S. Zou,X. Y. Ma,C. Q. Feng,X. S. Jiang,X. L. Ji,H. Loehner,Y. X. Xia,H. Muramatsu,G. Li,C. J. Tang,C. X. Liu,M. Ullrich,E. Boger,M. Maggiora,J. Dong,Z. P. Mao,Alperen Yuncu,Zhiqiang Liu,Y. H. Yan,D. Xiao,J. F. Chang,W. Kühn,H. M. Liu,M. L. Chen,S. Qian,Z. G. Wang,M. Ripka,C. Hu,B. Q. Wang,Y. B. Chen,F. A. Harris,X. P. Xu,Shan Wang,Z. Gao,Ke Wang,J. F. Sun,Giulietto Felici,L. Yang,Y. Z. Sun,C. Geng,S. Nisar,J. H. Yin,C. Morales Morales,S. S. Sun,M. Bertani,K. J. Zhu,C. C. Zhang,X. Q. Hao,J. Z. Bai,M. H. Ye,Q. M. Ma,K. H. Rashid,Xuanhong Lou,V. Santoro,Qun-Yao Wang,D. P. Jin,Nasser Kalantar-Nayestanaki,L. L. Ma,M. G. Zhao,A. Julin,X. S. Kang,K. J. Zhu,D. V. Dedovich,F. Nerling,J. W. Zhao,J. M. Bian,K. J. Li,D. Cronin-Hennessy,Y. Zeng,Y. H. Yang,P. L. Wang,D. H. Wei,M. H. Gu,Fang Liu,J. G. Messchendorp,R. G. Ping,H. S. Chen,Y. P. Lu,J. Z. Fan,N. Yu. Muchnoi,D. H. Zhang,J. H. Zou,Mario Greco,X. N. Li,Y. F. Liang,G. R. Liao,P. Weidenkaff,Xichao Ruan,Z. Wu,G. S. Huang,X. Q. Li,J. V. Bennett,Q. J. Xu,W. P. Wang,P. Patteri,X. R. Zhou,I. Denysenko,S. H. Zhang,T. Johansson,W. L. Yuan,Y. N. Gao,M. Kornicer,C. Leng,I. B. Nikolaev,G. F. Chen,W. M. Song,P. Larin,S. Schumann,J. J. Zhang,Lei Zhao,M. Y. Dong,M. Lv,W. Lai,X. H. Mo,Lingxuan Zhang,X. S. Qin,J. F. Hu,Yang Qin,B. Kloss,D. Toth,L. L. Wang,J. H. Liu,W. B. Yan,S. Spataro,Yaquan Fang,S. J. Chen,X. K. Chu,Liqing Xu,Magnus Wolke,M. Savrie,S. L. Niu,X. Y. Zhang,F. Li,Y. Ban,Y. T. Liang,B. X. Zhang,J. P. Dai,Y. H. Zhang,Qiunan Xu,O. B. Kolcu,J. G. Lu,P. X. Shen,X. H. Liu,A. A. Zafar,B. Kopf,J. Zhuang,X. M. Li,K. Zhang,S. Jin,Manuel Lara,Y. Yuan,Q. L. Xiu,Y. X. Yang,Z. L. Hou,R. Q. Lu,G. A. Chelkov,H. Cai,D. J. Ambrose,F. Feldbauer,F. De Mori,M. Fritsch,Xiaofeng Zhu,Y. K. Heng,G. X. Sun,Xiao-Rui Lyu,Y. L. Han,S. Ma +411 more
TL;DR: In this article, the first time the decays χcJ→ϕKS0K±π∓ and χ cJ→ ϕK+K-π0 in the E1 radiative transition ψ(3686)→γχcj were studied.
16
Improved measurement of the absolute branching fraction of D+ → K0µ+νµ
M. Ablikim,M. N. Achasov,Xiaocong Ai,O. Albayrak,M. Albrecht,D. J. Ambrose,A. Amoroso,Fenfen An,Q. An,J. Z. Bai,R. Baldini Ferroli,Y. Ban,D. W. Bennett,J. V. Bennett,M. Bertani,D. Bettoni,J. M. Bian,F. Bianchi,E. Boger,I. R. Boyko,R. A. Briere,H. Cai,X. Cai,O. Cakir,A. Calcaterra,G. F. Cao,Serkant Ali Cetin,J. F. Chang,G. A. Chelkov,G. F. Chen,H. S. Chen,H. S. Chen,J. C. Chen,M. L. Chen,S. Z. Chen,S. J. Chen,X. C. Chen,X. R. Chen,Y. B. Chen,H. P. Cheng,X. K. Chu,G. Cibinetto,H. L. Dai,J. P. Dai,A. Dbeyssi,D. V. Dedovich,Z. Y. Deng,A. G. Denig,I. Denysenko,M. Destefanis,F. De Mori,Y. Ding,C. Dong,J. Dong,L. Y. Dong,M. Y. Dong,Z. L. Dou,S. X. Du,P. F. Duan,J. Z. Fan,J. Fang,S. S. Fang,X. Fang,Yaquan Fang,R. Farinelli,L. Fava,O. Fedorov,F. Feldbauer,G. Felici,C. Q. Feng,E. Fioravanti,M. Fritsch,C. D. Fu,Q. Gao,X. L. Gao,X. Y. Gao,Y. N. Gao,Z. Gao,I. Garzia,K. Goetzen,L. Gong,W. X. Gong,W. Gradl,M. Greco,M. H. Gu,Y. T. Gu,Y. H. Guan,A. Q. Guo,L. B. Guo,R. P. Guo,Y. N. Guo,Y. P. Guo,Z. Haddadi,A. Hafner,S. W. Han,X. Q. Hao,F. A. Harris,K. L. He,T. Held,Y. K. Heng,Z. L. Hou,C. Hu,H. M. Hu,J. F. Hu,T. Hu,Y. Hu,G. S. Huang,J. S. Huang,X. T. Huang,Xiaozhong Huang,Yanping Huang,Z. L. Huang,T. Hussain,Q. P. Ji,Q. P. Ji,X. B. Ji,X. L. Ji,L. W. Jiang,X. S. Jiang,X. Y. Jiang,J. B. Jiao,Z. Jiao,D. P. Jin,S. Jin,T. Johansson,A. Julin,Nasser Kalantar-Nayestanaki,X. L. Kang,X. S. Kang,M. Kavatsyuk,Bibo Ke,P. Kiese,R. Kliemt,B. Kloss,O. B. Kolcu,B. Kopf,M. Kornicer,Andrzej Kupsc,W. Kühn,J. S. Lange,Manuel Lara,P. Larin,C. Leng,C-Q. Li,Cheng Li,D. M. Li,F. Li,F. Y. Li,G. Li,H. B. Li,H. J. Li,J. C. Li,Jin Li,K. J. Li,Lei Li,P. R. Li,Q. Y. Li,Tao Li,W. D. Li,W. G. Li,X. L. Li,Xinglong Li,X. Q. Li,Yang Li,Z. B. Li,H. Liang,Y. F. Liang,Y. T. Liang,G. R. Liao,D. X. Lin,B. J. Liu,B. J. Liu,C. X. Liu,D. Y. Liu,F. H. Liu,Fang Liu,Feng Liu,H. B. Liu,H. H. Liu,H. M. Liu,J. P. Liu,J. B. Liu,Jiaxi Liu,J. Y. Liu,K. Y. Liu,K. Y. Liu,L. D. Liu,Peilian Liu,Q. Liu,S. B. Liu,X. H. Liu,Y. B. Liu,Z. A. Liu,Zhiqing Liu,H. Loehner,Xuanhong Lou,H. J. Lu,J. G. Lu,Y. P. Lu,Y. P. Lu,C. L. Luo,M. X. Luo,Tao Luo,X. L. Luo,Xiao-Rui Lyu,F. C. Ma,H. L. Ma,L. L. Ma,M. M. Ma,Q. M. Ma,T. Ma,X. N. Ma,X. Y. Ma,Y. M. Ma,F. E. Maas,M. Maggiora,Y. J. Mao,Z. P. Mao,S. Marcello,J. G. Messchendorp,J. Min,T. J. Min,R. E. Mitchell,X. H. Mo,Y. J. Mo,C. Morales Morales,N. Y.-U. Muchnoi,H. Muramatsu,Y. Nefedov,F. Nerling,I. B. Nikolaev,Z. Ning,S. Nisar,S. L. Niu,X. Y. Niu,S. L. Olsen,Q. Ouyang,S. Pacetti,Yue Pan,P. Patteri,M. Pelizaeus,Haiping Peng,Krisztian Peters,Joachim Pettersson,Jialun Ping,R. G. Ping,R. Poling,Prasad,H. R. Qi,M. Qi,S. Qian,Cong-Feng Qiao,L. Q. Qin,N. Qin,X. S. Qin,Z. H. Qin,J. F. Qiu,K. H. Rashid,C. F. Redmer,M. Ripka,G. Rong,C.-H. Rosner,Xichao Ruan,A. Sarantsev,M. Savrie,K. Schoenning,S. Schumann,W. Shan,M. Shao,C. P. Shen,P. X. Shen,X. Y. Shen,H. Y. Sheng,M. Shi,W. M. Song,X. Y. Song,S. Sosio,S. Spataro,G. X. Sun,J. F. Sun,S. S. Sun,X. H. Sun,Y. J. Sun,Y. Z. Sun,Z. J. Sun,Zhe Sun,C. J. Tang,X. Tang,I. Tapan,E. H. Thorndike,M. Tiemens,M. Ullrich,I. Uman,G. S. Varner,B. Wang,B. L. Wang,Dan Wang,D. Y. Wang,Ke Wang,L. L. Wang,L. S. Wang,M. Z. Wang,P. Wang,P. L. Wang,W. P. Wang,W. P. Wang,X. F. Wang,Y. F. Wang,Yao Wang,Y. F. Wang,Y. Q. Wang,Zujian Wang,Z. G. Wang,Z. H. Wang,Z. Y. Wang,Tristan Weber,D. H. Wei,P. Weidenkaff,S. P. Wen,U. Wiedner,Magnus Wolke,L. H. Wu,L. J. Wu,Z. Wu,L. G. Xia,L. G. Xia,Y. X. Xia,D. Xiao,H. Xiao,Z. J. Xiao,Y. G. Xie,Q. L. Xiu,G. F. Xu,J. J. Xu,Liqing Xu,Q. J. Xu,Qiunan Xu,X. P. Xu,Li Yan,W. B. Yan,W. C. Yan,Y. H. Yan,H. J. Yang,H. X. Yang,L. Yang,Y. X. Yang,M. H. Ye,M. H. Ye,J. H. Yin,B. X. Yu,C. X. Yu,Jie Yu,C. Z. Yuan,W. L. Yuan,Y. Yuan,Alperen Yuncu,A. A. Zafar,A. Zallo,Y. Zeng,Zhi Zeng,B. X. Zhang,B. Y. Zhang,C. C. Zhang,Cen Zhang,D. H. Zhang,H. H. Zhang,H. Y. Zhang,J. Y. Zhang,J. J. Zhang,J. L. Zhang,J. Q. Zhang,J. W. Zhang,Jun-Yi Zhang,J. Z. Zhang,K. Zhang,Lingxuan Zhang,S. Q. Zhang,X. Y. Zhang,Y. Zhang,Y. H. Zhang,Y. N. Zhang,Yunlong Zhang,Yu Zhang,Zhiqing Zhang,Z. P. Zhang,Z. Y. Zhang,Gang Zhao,J. W. Zhao,Jie Zhao,Jimin Zhao,Lei Zhao,Ling Zhao,M. G. Zhao,Q. Zhao,Q. W. Zhao,S. J. Zhao,T. C. Zhao,Y. B. Zhao,Z. G. Zhao,Alexey Zhemchugov,B. Zheng,Jinxing Zheng,W. J. Zheng,Y. H. Zheng,B. Zhong,L. P. Zhou,X. K. Zhou,X. K. Zhou,X. R. Zhou,X. Y. Zhou,K. J. Zhu,K. J. Zhu,S. Zhu,Shou-hua Zhu,Xiaofeng Zhu,Y. C. Zhu,Y. S. Zhu,Z. A. Zhu,J. Zhuang,L. Zotti,B. S. Zou,J. H. Zou +421 more
- 01 Jan 2016
16
Observation of $B^0_{(s)} \to J/\psi p \overline{p}$ decays and precision measurements of the $B^0_{(s)}$ masses
Roel Aaij,C. Abellán Beteta,Bernardo Adeva,Marco Adinolfi,C. A. Aidala,Ziad Ajaltouni,Simon Akar,Pietro Albicocco,Johannes Albrecht,Federico Alessio,Michael Alexander,A. Alfonso Albero,G. Alkhazov,P. Alvarez Cartelle,A. A. Alves,Sandra Amato,S. Amerio,Yasmine Amhis,Liupan An,Lucio Anderlini,Guido Andreassi,M. Andreotti,J. E. Andrews,F. Archilli,J. Arnau Romeu,A. Artamonov,Marina Artuso,Kenenbek Arzymatov,Elie Aslanides,Michele Atzeni,Benjamin Audurier,Sebastian Bachmann,John Back,Sophie Baker,Vladislav Balagura,Wander Baldini,Alexander Baranov,Roger Barlow,G. C. Barrand,Sergey Barsuk,William Barter,Matteo Bartolini,Fedor Baryshnikov,Varvara Batozskaya,Baasansuren Batsukh,Alexander Battig,Vincenzo Battista,A. Bay,J. Beddow,F. Bedeschi,Ignacio Bediaga,Andrew Beiter,L. J. Bel,Samuel Belin,Nikita Beliy,V. Bellee,N. Belloli,Konstantin Belous,Ivan Belyaev,G. Bencivenni,E. Ben-Haim,S. Benson,S. Beranek,Alexander Berezhnoy,Roland Bernet,Daniel Berninghoff,Emilie Bertholet,Alessandro Bertolin,Christopher Betancourt,Federico Betti,Marc-Olivier Bettler,Ia. Bezshyiko,Srishti Bhasin,Jihyun Bhom,Martin Stefan Bieker,Simone Bifani,P. Billoir,A. Birnkraut,Andrea Bizzeti,Mikkel Bjørn,Michele Piero Blago,Thomas Blake,F. Blanc,S. Blusk,Dana Bobulska,V. Bocci,O. Boente Garcia,Thomas Boettcher,Alexander Bondar,Nikolay Bondar,Silvia Borghi,Maxim Borisyak,Martino Borsato,M. Boubdir,Themistocles Bowcock,C. Bozzi,Svende Braun,M. Brodski,Jolanta Brodzicka,A. Brossa Gonzalo,Davide Brundu,E. Buchanan,Annarita Buonaura,Christopher Burr,Albert Bursche,J. Buytaert,Wiktor Byczynski,Sandro Cadeddu,Huacheng Cai,R. Calabrese,Ryan Calladine,Marta Calvi,M. Calvo Gomez,Alessandro Camboni,P. Campana,D. Campora Perez,Lorenzo Capriotti,Angelo Carbone,G. Carboni,Roberta Cardinale,Alessandro Cardini,Paolo Carniti,K. Carvalho Akiba,Gianluigi Casse,Marco Cattaneo,G. Cavallero,R. Cenci,David Chamont,Matthew George Chapman,M. Charles,Ph. Charpentier,Georgios Chatzikonstantinidis,Maximilien Chefdeville,V. Chekalina,C. Chen,S. J. Chen,S.-G. Chitic,Veronika Chobanova,Marcin Chrzaszcz,Alexsei Chubykin,Paolo Ciambrone,X. Cid Vidal,Gregory Ciezarek,Federico Cindolo,P. E. L. Clarke,Marco Clemencic,H. V. Cliff,J. Closier,Victor Coco,Joao A B Coelho,Julien Cogan,E. Cogneras,Lucian Cojocariu,P. Collins,Tommaso Colombo,Albert Comerma-Montells,A. Contu,George Coombs,Samuel Coquereau,G. Corti,M. Corvo,C. M. Costa Sobral,B. Couturier,G. A. Cowan,Daniel Charles Craik,Andrew Crocombe,M. Cruz Torres,R. Currie,F. Da Cunha Marinho,C. L. Da Silva,E. Dall'Occo,Jeremy Dalseno,Carmelo D'Ambrosio,Anna Danilina,P. d'Argent,Adam Davis,O. De Aguiar Francisco,K. De Bruyn,S. De Capua,M. De Cian,J. M. De Miranda,L. De Paula,M. De Serio,P. De Simone,J. A. de Vries,Cameron Thomas Dean,William Dean,D. Decamp,L. Del Buono,Blaise Delaney,H.-P. Dembinski,Moritz Demmer,Adam Dendek,Denis Derkach,Olivier Deschamps,Fabrice Desse,Francesco Dettori,Biplab Dey,A. Di Canto,P. Di Nezza,Sergey Didenko,Hans Dijkstra,F. Dordei,Mirco Dorigo,A. C. dos Reis,A. Dosil Suárez,Lauren Douglas,A. Dovbnya,Karlis Dreimanis,Laurent Dufour,Giulio Dujany,P. Durante,John Matthew Durham,Deepanwita Dutta,R. Dzhelyadin,Michal Dziewiecki,A. Dziurda,A. Dzyuba,S. Easo,Ulrik Egede,V. Egorychev,S. Eidelman,Stephan Eisenhardt,U. Eitschberger,R. Ekelhof,Lars Eklund,Scott Ely,Alexandru Ene,Stephan Escher,S. Esen,Timothy Evans,A. Falabella,Christian Färber,Nathanael Farley,S. Farry,Davide Fazzini,Mauricio Féo,P. Fernandez Declara,A. Fernandez Prieto,Frank Ferrari,L. Ferreira Lopes,F. Ferreira Rodrigues,M. Ferro-Luzzi,S. Filippov,R. A. Fini,M. Fiorini,Miroslaw Firlej,C. Fitzpatrick,Tomasz Fiutowski,François Fleuret,Marianna Fontana,F. Fontanelli,Roger Forty,V. Franco Lima,Markus Frank,Christoph Frei,J. Fu,Wolfgang Funk,Emmy Gabriel,A. Gallas Torreira,D. Galli,S. Gallorini,Silvia Gambetta,Yuyue Gan,M. Gandelman,P. Gandini,Y. N. Gao,L. M. Garcia Martin,J. García Pardiñas,B. Garcia Plana,J. Garra Tico,L. Garrido,David Gascon,C. Gaspar,Laura Gavardi,Giulio Gazzoni,David Gerick,Evelina Gersabeck,Marco Gersabeck,T. J. Gershon,Dawid Gerstel,Ph. Ghez,V. Gibson,Olivier Göran Girard,P. Gironella Gironell,L. Giubega,Konstantin Gizdov,V. V. Gligorov,C. Göbel,Dmitry Golubkov,A. Golutvin,A. Gomes,I. V. Gorelov,Claudio Gotti,E. Govorkova,Jascha Peter Grabowski,R. Graciani Diaz,L. A. Granado Cardoso,E. Grauges,Elena Graverini,G. Graziani,A. Grecu,Roman Greim,P. Griffith,Lucia Grillo,Lukas Gruber,B. R. Gruberg Cazon,O. Grünberg,Chenxi Gu,E. Gushchin,Andreas Güth,Yu. Guz,T. Gys,Thomas Hadavizadeh,C. Hadjivasiliou,G. Haefeli,C. Haen,S. C. Haines,B. Hamilton,X. Han,Thomas Henry Hancock,S. Hansmann-Menzemer,Neville Harnew,Thomas Harrison,Christoph Hasse,Mark Hatch,J. He,Malte Hecker,Kevin Heinicke,A. Heister,Karol Hennessy,Louis Henry,M. Heß,Johannes Heuel,A. Hicheur,R. Hidalgo Charman,D. Hill,Martha Hilton,Plamen Hristov Hopchev,Jiangqiao Hu,Wenhua Hu,W. Huang,Z. C. Huard,W. D. Hulsbergen,Thibaud Humair,Mikhail Hushchyn,D. E. Hutchcroft,D. Hynds,Philipp Ibis,Marek Idzik,Philip Ilten,Alexander Inglessi,Alexander Inyakin,Kuzma Ivshin,R. Jacobsson,J. Jalocha,E. Jans,Brij Kishor Jashal,A. Jawahery,Feng Jiang,Malcolm John,D. R. Johnson,C. R. Jones,C. Joram,B. Jost,Nathan Jurik,S. Kandybei,M. Karacson,James Mwangi Kariuki,S. Karodia,Nikita Kazeev,Matthieu Kecke,Floris Keizer,Matthew Kelsey,Matthew Kenzie,Tjeerd Ketel,Egor Khairullin,Basem Khanji,C. Khurewathanakul,K. E. Kim,T. Kirn,Veronica Soelund Kirsebom,S. Klaver,Konrad Klimaszewski,Tatsiana Klimkovich,Serhii Koliiev,Michael Kolpin,Renata Kopecna,Patrick Koppenburg,Igor Kostiuk,Sofia Kotriakhova,Mohamad Kozeiha,L. Kravchuk,Michal Kreps,Felix Johannes Kress,P. Krokovny,Wojciech Krupa,Wojciech Krzemien,Wojciech Kucewicz,Marcin Kucharczyk,V. Kudryavtsev,Axel Kevin Kuonen,T. Kvaratskheliya,D. Lacarrere,G. D. Lafferty,A. Lai,Davide Lancierini,G. Lanfranchi,Christoph Langenbruch,T. E. Latham,C. Lazzeroni,R. Le Gac,R. Lefèvre,A. Leflat,Florian Lemaitre,Olivier Leroy,T. Lesiak,B. Leverington,P. R. Li,Y. Li,Zhuoming Li,Xixin Liang,Tatiana Likhomanenko,R. Lindner,Federica Lionetto,Vitalii Lisovskyi,G. Liu,Xia-Ji Liu,David Loh,Angelo Loi,I. Longstaff,J. H. Lopes,George Holger Lovell,D. Lucchesi,M. Lucio Martinez,Yiheng Luo,Anna Lupato,E. Luppi,Oliver Lupton,A. Lusiani,Xiao-Rui Lyu,Frederic Machefert,F. Maciuc,Vladimir Macko,Patrick Mackowiak,Samuel Maddrell-Mander,O. Maev,Kevin Maguire,Dmitrii Maisuzenko,Maciej Witold Majewski,S. Malde,B. Malecki,Alexander Malinin,Timofei Maltsev,Hanna Malygina,G. Manca,G. Mancinelli,Daniele Marangotto,J. Maratas,Jean François Marchand,U. Marconi,C. Marin Benito,Matthieu Marinangeli,Pietro Marino,J. Marks,Phillip John Marshall,G. Martellotti,Maurizio Martinelli,D. Martinez Santos,F. Martinez Vidal,A. Massafferri,Marcel Materok,R. Matev,Abhijit Mathad,Z. Mathe,C. Matteuzzi,Andrea Mauri,Emilie Maurice,Brice Maurin,Michael McCann,A. McNab,R. McNulty,James Vincent Mead,B. T. Meadows,Cedric Meaux,Nis Meinert,D. Melnychuk,M. Merk,Andrea Merli,Emanuele Michielin,Diego Alejandro Milanes,Edward James Millard,M.-N. Minard,Luca Minzoni,Dominik Stefan Mitzel,Antje Mödden,Andrea Mogini,Razvan Daniel Moise,Titus Mombächer,I. A. Monroy,S. Monteil,M. Morandin,Gianfranco Morello,M. J. Morello,Olga Morgunova,Jakub Moron,Adam Benjamin Morris,R. Mountain,F. Muheim,M. Mukherjee,Mick Mulder,Dominik Müller,Janine Müller,K. Müller,Vanessa Müller,Colm Harold Murphy,Donal Murray,P. Naik,Tatsuya Nakada,R. Nandakumar,Anita Nandi,Tara Nanut,I. Nasteva,M. Needham,N. Neri,Sebastian Neubert,N. Neufeld,Ryan Newcombe,T. D. Nguyen,Chung Nguyen-Mau,Simon Nieswand,R. Niet,Nikolay Nikitin,Alla Nogay,Niklas Stefan Nolte,Agnieszka Oblakowska-Mucha,V. Obraztsov,S. Ogilvy,Daniel Patrick O'Hanlon,Rudolf Oldeman,C. J. G. Onderwater,Anna Ossowska,J. M. Otalora Goicochea,T. Ovsiannikova,Patrick Owen,A. Oyanguren,Preema Rennee Pais,Tommaso Pajero,A. Palano,M. Palutan,Gennady Panshin,A. Papanestis,Marco Pappagallo,L. L. Pappalardo,William Parker,Christopher Parkes,G. Passaleva,Alessandro Pastore,M. Patel,C. Patrignani,Alex Pearce,Antonio Pellegrino,Gianni Penso,M. Pepe Altarelli,Stefano Perazzini,Dmitrii Pereima,P. Perret,Luca Pescatore,Konstantinos Petridis,A. Petrolini,Aleksandr Petrov,Stefano Petrucci,Marco Petruzzo,B. Pietrzyk,Guillaume Pietrzyk,Malgorzata Pikies,Martina Pili,D. Pinci,Jacopo Pinzino,Flavio Pisani,Alessio Piucci,Vlad-Mihai Placinta,S. Playfer,Jonathan Plews,M. Plo Casasus,F. Polci,M. Poli Lener,Anton Poluektov,Natalia Polukhina,Ivan Polyakov,E. Polycarpo,Gabriela Johanna Pomery,Sebastien Ponce,A. Popov,Dmitry Popov,Stanislav Poslavskii,Eugenia Price,Jessica Prisciandaro,Claire Prouve,Valery Pugatch,A. Puig Navarro,Hannah Louise Pullen,G. Punzi,Wenbin Qian,Jia-Jia Qin,Renato Quagliani,B. Quintana,Naomi Veronika Raab,B. Rachwal,Jonas Rademacker,M. Rama,M. Ramos Pernas,M. S. Rangel,Fedor Ratnikov,G. Raven,M. Ravonel Salzgeber,Meril Reboud,F. Redi,Stefanie Reichert,Florian Reiss,C. Remon Alepuz,Zan Ren,Victor Renaudin,S. Ricciardi,Sophie Richards,Kurt Rinnert,Patrick Robbe,Arnaud Robert,A. B. Rodrigues,Eduardo Rodrigues,J. A. Rodriguez Lopez,Markus Roehrken,S. Roiser,Alexandra Paige Rollings,Vladimir Romanovskiy,A. Romero Vidal,Jordan Daniel Roth,M. Rotondo,Matthew Scott Rudolph,T. Ruf,J. Ruiz Vidal,J. J. Saborido Silva,N. Sagidova,Biagio Saitta,V. Salustino Guimaraes,C. Sanchez Gras,C. Sanchez Mayordomo,B. Sanmartin Sedes,R. Santacesaria,C. Santamarina Rios,Marco Santimaria,E. Santovetti,Gediminas Sarpis,Alessio Sarti,C. Satriano,A. Satta,Miroslav Saur,D. Savrina,S. Schael,Margarete Schellenberg,Manuel Schiller,H. Schindler,M. Schmelling,Timon Schmelzer,B. Schmidt,O. Schneider,A. Schopper,H. F. Schreiner,Maxime Schubiger,Sebastian Schulte,Marie Helene Schune,R. Schwemmer,Barbara Sciascia,A. Sciubba,A. Semennikov,E. S. Sepulveda,Antonino Sergi,Nicola Serra,J. Serrano,Lorenzo Sestini,Alex Seuthe,Paul Seyfert,M. Shapkin,Y. Shcheglov,Tara Shears,L. Shekhtman,V. Shevchenko,Evgenii Shmanin,Benedetto Gianluca Siddi,R. Silva Coutinho,L. Silva de Oliveira,G. Simi,S. Simone,Igor Skiba,Nicola Skidmore,Tomasz Skwarnicki,Mark Slater,John Gordon Smeaton,Eluned Smith,Iwan Thomas Smith,Mark Smith,Mara Senghi Soares,l. Soares Lavra,Michael Sokoloff,F. J. P. Soler,B. Souza De Paula,B. Spaan,E. Spadaro Norella,P. Spradlin,F. Stagni,Marian Stahl,Stephen M. Stahl,Pavol Stefko,Slavomira Stefkova,O. Steinkamp,Simon Stemmle,Oleg Stenyakin,Margarita Stepanova,Holger Stevens,Achille Stocchi,Sheldon Stone,B. Storaci,S. Stracka,Maria Elena Stramaglia,M. Straticiuc,U. Straumann,Sergey Strokov,Jiayin Sun,Luyan Sun,Y. Sun,Krzysztof Swientek,Adam Szabelski,Tomasz Szumlak,Maciej Pawel Szymanski,Zhipeng Tang,Tobias Tekampe,G. Tellarini,F. Teubert,E. Thomas,Matthew James Tilley,V. Tisserand,Stephane T'Jampens,Mark Tobin,S. Tolk,L. Tomassetti,D. Tonelli,Da Yu Tou,R. Tourinho Jadallah Aoude,E. Tournefier,Murdo Traill,M. T. Tran,A. Trisovic,A. Tsaregorodtsev,Giulia Tuci,Alison Tully,N. Tuning,A. Ukleja,Andrii Usachov,Andrey Ustyuzhanin,U. Uwer,Alexander Vagner,V. Vagnoni,Andrea Valassi,Sebastien Valat,G. Valenti,M. van Beuzekom,E. van Herwijnen,J. van Tilburg,M. van Veghel,R. Vazquez Gomez,P. Vazquez Regueiro,C. Vázquez Sierra,S. Vecchi,Jaap Velthuis,M. Veltri,Giovanni Veneziano,Aravindhan Venkateswaran,M. Vernet,Michele Veronesi,Mika Vesterinen,J. V. Viana Barbosa,Daniel Vieira,M. Vieites Diaz,Harald Viemann,Xavier Vilasis-Cardona,Arseniy Vitkovskiy,Marcela Vitti,V. Volkov,A. Vollhardt,D. Vom Bruch,Balazs Voneki,A. Vorobyev,V. Vorobyev,Nikolai Voropaev,Roland Waldi,J. J. Walsh,J. Wang,Moran Wang,Yawen Wang,Zhenzi Wang,D. R. Ward,Heather Mckenzie Wark,N. K. Watson,D. Websdale,Andreas Weiden,Constantin Weisser,Mark Whitehead,G. Wilkinson,Mark Wilkinson,Ifan Williams,Mark Richard James Williams,M. R. J. Williams,Thomas N. Williams,F. F. Wilson,M. Winn,W. Wislicki,M. Witek,G. Wormser,S. A. Wotton,K. Wyllie,Dong Xiao,Y. Xie,Ao Xu,M. Xu,Qiang Xu,Zehua Xu,Zishuo Yang,Yuezhe Yao,Lauren Emma Yeomans,Hang Yin,J. M. Yu,Xuhao Yuan,O. Yushchenko,Kristian Alexander Zarebski,Mikhail Zavertyaev,D. Zhang,L. Zhang,Wen Chao Zhang,Y. Zhang,A. Zhelezov,Y. H. Zheng,Xiaofeng Zhu,Valery Zhukov,Jennifer Brigitta Zonneveld,Stefano Zucchelli +844 more
TL;DR: The first observation of the decays B(s)0→J/ψpp is reported, using proton-proton collision data corresponding to an integrated luminosity of 5.2 fb-1, collected with the LHCb detector.
Study of $J / ψ$ and $ψ ( 3686 )$ decays to $π^+ π^− η^′$
M. Ablikim,H. X. Yang,M. Kuemmel,Z. P. Zhang,T. Hussain,T. Held,G. S. Varner,Z. X. Meng,F. H. Liu,L. G. Xia,Tao Li,W. X. Gong,Z. A. Zhu,X. Tang,X. H. Sun,Y. Hu,Q. A. Malik,Ling Zhao,G. Mezzadri,Z. Y. You,J. F. Qiu,Yao Zhang,H. Xiao,M. Rolo,Z. Y. Zhang,S. Zhu,R. A. Briere,J. Y. Zhang,H. B. Liu,P. F. Duan,X. Q. He,Alexey Zhemchugov,K. Goetzen,Jie Yu,J. W. Zhang,S. L. Olsen,H. M. Hu,Krisztian Peters,I. Tapan,Y. G. Xie,W. Kühn,X. Y. Niu,X. L. Gao,Z. Y. Deng,Serkant Ali Cetin,Haiping Peng,H. J. Li,Q. Y. Li,M. Z. Wang,S. Pacetti,B. Zheng,S. Fegan,Z. G. Zhao,Y. J. Mao,I. R. Boyko,S. X. Du,H. L. Dai,M. Destefanis,Fang Liu,M. Albrecht,Dayong Wang,Y. P. Guo,Y. B. Zhao,Cheng Li,Ke Liu,Ke Li,T. Ma,Andrzej Kupsc,Q. Gao,B. J. Liu,H. Y. Zhang,Jie Zhao,K. Y. Liu,C. C. Zhang,B. L. Wang,Jun-Yi Zhang,M. N. Achasov,D. X. Lin,Tobias Weber,K. Y. Liu,U. Wiedner,Z. L. Huang,Y. J. Mo,W. Shan,Jin Li,B. Y. Zhang,T. Hu,X. F. Wang,C. Dong,X. T. Huang,Z. B. Li,Z. Jiao,J. L. Zhang,E. Fioravanti,J. C. Li,Jialun Ping,R. E. Mitchell,G. Rong,D. Bettoni,Zhiqing Zhang,G. F. Xu,J. Pellegrino,S. Marcello,H. Y. Sheng,D. M. Li,Y. C. Zhu,Z. Ning,Joachim Pettersson,Y. J. Sun,Z. Haddadi,A. Calcaterra,Feng Liu,C. Schnier,N. Yu. Muchnoi,Xingguo Li,X. N. Ma,M. Richter,J. B. Liu,S. S. Fang,L. P. Zhou,F. C. Ma,Nicolas Berger,I. Uman,T. Holtmann,S. Sosio,A. Q. Guo,B. J. Liu,I. Garzia,C. Z. Yuan,X. S. Qin,W. G. Li,Q. An,A. G. Denig,R. Baldini Ferroli,J. S. Lange,O. Dorjkhaidav,X. Y. Song,X. Y. Zhou,W. J. Zheng,S. W. Han,J. S. Huang,C. X. Yu,D. Y. Wang,H. H. Zhang,C. D. Fu,O. Cakir,Z. J. Sun,K. L. He,J. Y. Liu,Jianping Zheng,J. P. Liu,M. Tiemens,M. Shao,Huanhuan Liu,M. Qi,Z. A. Liu,S. P. Wen,R. P. Guo,Y. X. Zhou,Gianfranco Morello,K. Schoenning,Yang Zhang,X. K. Zhou,X. Y. Shen,Y. B. Liu,Lei Li,Cong-Feng Qiao,F. Li,X. R. Chen,Z. Y. Wang,Y. T. Gu,J. C. Chen,H. B. Li,J. B. Jiao,Y. Nefedov,F. E. Maas,A. Amoroso,X. B. Ji,M. H. Ye,J. H. Wei,L. Fava,S. Ahmed,X. A. Xiong,Fenfen An,G. Cibinetto,H. J. Lu,O. Bakina,H. Liang,Y. H. Yang,Y. H. Zheng,Y. Q. Wang,J. Q. Zhang,Gang Zhao,L. H. Wu,Zhe Sun,D. W. Bennett,B. X. Yu,Y. M. Ma,Z. H. Qin,F. Bianchi,S. J. Zhao,Y. Ding,L. S. Wang,Zujian Wang,X. Cai,T. C. Zhao,H. R. Qi,A. Dbeyssi,M. Savrie,C. L. Luo,P. Musiol,J. Zhu,Q. Ouyang,L. Lavezzi,C. P. Shen,Li Yan,Yu Zhang,R. Kliemt,P. R. Li,M. X. Luo,C. H. Li,C. F. Redmer,Y. S. Zhu,Zhiqing Liu,C. Sowa,Q. Liu,M. Pelizaeus,B. T. Tsednee,Q. P. Ji,Yao Wang,M. M. Ma,Y. P. Lu,H. L. Ma,J. Fang,Zongyuan Wang,J. Chai,W. D. Li,X. L. Luo,L. D. Liu,H. Leithoff,P. L. Li,L. Y. Dong,Bibo Ke,B. Zhong,Z. J. Xiao,R. Poling,S. B. Liu,G. Y. Tang,J. Min,Y. F. Wang,X. K. Zhou,W. Gradl,T. J. Min,X. L. Kang,A. Sarantsev,Peilian Liu,L. B. Guo,Yunlong Zhang,N. Qin,W. C. Yan,B. S. Zou,X. Y. Ma,Y. F. Long,C. Q. Feng,X. S. Jiang,X. L. Ji,L. Gong,A. Pitka,Yi Jin,S. Q. Zhang,T. Johansson,H. Muramatsu,G. Li,C. J. Tang,C. X. Liu,Liqing Xu,Huihui Liu,E. Boger,M. Maggiora,J. Dong,Shou-hua Zhu,Z. P. Mao,Alperen Yuncu,Y. H. Yan,D. Xiao,J. F. Chang,M. Kavatsyuk,L. Koch,H. M. Liu,M. L. Chen,S. Qian,Z. G. Wang,Q. Zhao,M. Ripka,C. Hu,B. Q. Wang,Y. B. Chen,F. A. Harris,A. Khoukaz,X. P. Xu,Yue Pan,Z. Gao,Ke Wang,Yu Bai,J. F. Sun,G. Felici,L. Yang,Y. Z. Sun,J. J. Xu,S. Nisar,J. H. Yin,Dan Wang,C. Morales Morales,M. H. Gu,M. Bertani,K. J. Zhu,X. Q. Hao,J. Z. Bai,M. H. Ye,Q. M. Ma,K. H. Rashid,L. Sun,Xuanhong Lou,D. P. Jin,Nasser Kalantar-Nayestanaki,L. L. Ma,J. J. Song,M. G. Zhao,A. Julin,X. S. Kang,K. J. Zhu,W. P. Wang,Y. F. Wang,D. V. Dedovich,F. Nerling,J. W. Zhao,J. M. Bian,Xiaozhong Huang,Y. Zeng,P. L. Wang,D. H. Wei,S. S. Sun,P. L. Chen,J. G. Messchendorp,M. Papenbrock,R. G. Ping,H. S. Chen,Y. P. Lu,X. Y. Jiang,V. Prasad,M. Kuhlmann,D. H. Zhang,Z. L. Dou,R. Farinelli,Mario Greco,X. N. Li,A. Mustafa,D. Y. Liu,Y. F. Liang,G. R. Liao,T. Khan,P. Weidenkaff,Xichao Ruan,P. X. Shen,G. S. Huang,X. Q. Li,J. V. Bennett,Q. J. Xu,Y. K. Sun,P. Patteri,X. R. Zhou,Y. X. Yang,Jimin Zhao,Y. X. Xia,Y. N. Gao,M. Kornicer,C. Leng,P. L. Wang,I. B. Nikolaev,P. Kiese,G. F. Chen,Kang Li,W. M. Song,P. Larin,J. H. Zou,Lei Zhao,M. Y. Dong,X. H. Mo,Lingxuan Zhang,Q. P. Ji,K. J. Li,J. Z. Zhang,G. F. Cao,L. L. Wang,W. B. Yan,S. Spataro,Yaquan Fang,S. J. Chen,L. J. Wu,X. K. Chu,Ch. Rosner,H. J. Yang,Magnus Wolke,W. Ikegami Andersson,Y. G. Gao,S. L. Niu,X. Y. Zhang,F. Y. Li,Zhi Zeng,Y. Ban,F. H. Heinsius,Y. T. Liang,B. X. Zhang,Y. H. Xie,J. P. Dai,Y. H. Zhang,Qiunan Xu,O. B. Kolcu,J. G. Lu,Xiaofeng Zhu,Z. Wu,X. H. Liu,A. A. Zafar,B. Kopf,J. Zhuang,K. Zhang,S. Jin,Manuel Lara,Y. Yuan,Q. L. Xiu,I. Denysenko,Z. L. Hou,G. A. Chelkov,H. Cai,F. Feldbauer,M. Fritsch,Y. J. Xiao,Y. K. Heng,S. Gu,G. X. Sun,Xiao-Rui Lyu,F. De Mori +441 more
TL;DR: In this article, partial wave analyses on the decays J/psi and psi(3686) pthornp -> pi(+)pi(-)eta' are performed with a relativistic covariant tensor amplitude approach.
16