Amplitude Analysis Of E(+)E(-) -> Upsilon(Ns)Pi(+)Pi(-) At Root S=10.866 Gev

A Garmash,T Iwashita,D Liventsev,B R Ko,Z P Zhang,D Epifanov, Y Yook,H Kichimi,V Chekelian,R Pestotnik,S Al Said,A Bala,K Hayasaka,P Lukin,V Vorobyev,D Dutta,Youngjin Choi, C Z Yuan,Sung Hoon Lee,J Dalseno, I Jaegle,T Sumiyoshi,S Okuno,M Ritter,A Bobrov,G B Mohanty,K Cho,B G Cheon,Ping Wang,Z Q Liu,O Frost,B Golob, M Staric, T Iijima,A Ishikawa,A Bozek,J Libby,H J Hyun,Takashi Saito, Y Watanabe,Y J Kwon, J Fast,C P Shen, G Varner,P Vanhoefer,V Zhilich, H Hayashii, E Ribezl,J B Kim,X H He, Y Sakai,J Haba,S Korpar, M Petric,P Katrenko,T Julius,S L Olsen,T Aushev, A Rostomyan, Yoshiro Sato,G Bonvicini,R Mizuk,E Solovieva,L E Piilonen,Du Yon Kim,T K Pedlar,N K Nisar,J Klucar,W Ostrowicz, P Krizan,O Schneider,M Bracko,H Farhat,Z Natkaniec,V Aulchenko,A Moll,K Kinoshita,S Uno,E Nedelkovska, D Matvienko,I Adachi,Yuanshen Li, M E Sevior,V Bhardwaj,T A Shibata,V Gaur,O Nitoh, Y Unno, Y S Sohn,K M Williams, Yasutaka Hoshi,R Chistov,Masako Watanabe, T Ferber, S Yashchenko,U Tamponi,M Nayak,G Tatishvili, M Steder,R Gillard, S Eidelman, P Kodys,A Abdesselam, R Mussa,R Ayad,M Nakao, H Aihara,X L Wang,H Yamamoto,T Sanuki,D Santel,Y Teramoto,H K Park,A Chen,T Kawasaki, Sanmay Ganguly, R Glattauer,V Chobanova,T E Browder,K Tanida, W S Hou,A Drutskoy,P Krokovny,A J Schwartz,K Chilikin,P Pakhlov, D M Asner,M Shapkin,C Liu, D Cervenkov,F Simon,K Senyo,Yong Jin Kim,D Semmler,Y M Goh, V Shebalin, M Rohrken,S Ryu,C H Wang,H Miyata,A Bondar,K T Kim,C Van Hulse,K Trabelsi,T Kuhr,K Miyabayashi,D Cinabro,Z Dolezal,R Itoh, S Stanic,J G Shiu, Y Iwasaki,Gary D Schnell,A Sokolov, M J Kim,H Kawai,J H Kang, A Vinokurova, P Urquijo, A Kuzmin, A Zupanc,Eriko Kato,Y B Hsiung,E Nakano,Shogo Nishida,S Sandilya,B Shwartz,Y Yamashita, Toru Hara,A M Bakich,M N Wagner,E Won,C Kiesling,L Li Gioi, A Frey,Y Usov,Makoto Uchida

PHYSICAL REVIEW D（2015）

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摘要

We report results on studies of the e(+)e(-) annihilation into three-body Upsilon(nS)pi(+)pi(-) (n = 1, 2, 3) final states including measurements of cross sections and the full amplitude analysis. The cross sections measured at root s = 10.866 GeV and corrected for the initial state radiation are sigma(e(+)e(-) --> Upsilon(1S)pi(+)pi(-)) = (2.27 +/- 0.12 +/- 0.14) pb, sigma(e(+)e(-) --> Upsilon(2S)pi(+)pi(-)) = (4.07 +/- 0.16 +/- 0.45) pb, and sigma(e(+)e(-) --> Upsilon(3S)pi(+)pi(-)) = (1.46 +/- 0.09 +/- 0.16) pb. Amplitude analysis of the three-body Upsilon(nS)pi(+)pi(-) final states strongly favors I-G(J(P)) = 1(+)(1(+)) quantum-number assignments for the two bottomonium-like Z(b)(+/-) states, recently observed in the Upsilon(nS)pi(+) and h(b)(mP)pi(+)(m = 1, 2) decay channels. The results are obtained with a 121.4 fb(-1) data sample collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider.

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