Measurements Of The Upsilon(10860) And Upsilon(11020) Resonances Via Sigma(E(+)E(-) -> Upsilon(Ns)Pi(+)Pi(-))

D. Santel,M. Bračko,D. Liventsev,B. R. Ko, M. Petrič, Y. Yook,V. Chekelian,V. Zhilich,S. Al Said,S. L. Olsen,K. Hayasaka,P. Lukin,T. Uglov, I. S. Lee,E. Won, D. Matvienko,R. Mizuk, Y. Choi, S. H. Kim,G. Tatishvili, I. Jaegle, H. Park, M. N. Wagner, S. Okuno,A. Bobrov,G. B. Mohanty,L. E. Piilonen,K. Cho,B. G. Cheon, P. Wang,B. Shwartz, K. Arinstein, T. Iijima, A. Ishikawa, J. S. Lange, J. Libby, H. J. Hyun, Y. Watanabe, K. Inami,J. Fast,L. Santelj, G. Varner, P. Vanhoefer,H. Hayashii, J. B. Kim,X. H. He, Y. Sakai, J. Haba, S. Korpar,S. Ogawa,T. Julius,T. Aushev, A. Rostomyan, G. Bonvicini, Z. Drásal, E. Solovieva, P. Kodys, D. Y. Kim,T. K. Pedlar,N. K. Nisar, O. Schneider,M. Ritter,H. Farhat, Z. Natkaniec,J. G. Shiu,A. Moll, Y. Yusa, D. Getzkow,S. Uno,I. Adachi, Y. Li,Y. P. Yang,M. E. Sevior,H. Miyata, Z. P. Zhang,A. Abdesselam, T. Mori, D. Červenkov, K. H. Kang,P. Chang,K. Kinoshita,M. Watanabe,C. Oswald, T. Ferber, S. Yashchenko,U. Tamponi, M. Steder, Y. S. Sohn,R. Gillard,S. Eidelman, C. W. Park,Z. Doležal, P. Križan,V. Zhulanov, R. Mussa, R. Ayad, M. Nakao, C. Schwanda, H. Aihara, H. J. Kim,X. Wang, T. Sanuki,T.-A. Shibata,Y. Teramoto, A. Vinokurova, T. Kawasaki, M. Starič,V. Chobanova,T. E. Browder, N. Gabyshev, J. Dalseno, A. Drutskoy, P. Krokovny,A. J. Schwartz, K. Chilikin,P. Pakhlov,D. M. Asner, J. H. Kim,J. Yamaoka,F. Simon, K. Senyo,V. Bansal, Y. J. Kim,Y. M. Goh, V. Shebalin,S. Ryu,V. Gaur,A. Bondar,C. Van Hulse, A. Sibidanov, K. Miyabayashi,B. Bhuyan,S.-K. Choi, Y. Unno, R. Itoh,J. Dingfelder, Y. Iwasaki, G. Schnell, M. Danilov, K. Trabelsi, M. J. Kim,W.-S. Hou, V. Savinov, A. Kuzmin, A. Zupanc,E. Kato,D. Joffe, D. Cinabro, E. Nakano, G. Pakhlova, S. Nishida, S. Sandilya,T. Nanut, T. Hara, E. Ribežl, A. Garmash,A. M. Bakich, C. Kiesling,L. Li Gioi,M. Uchida

PHYSICAL REVIEW D（2016）

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摘要

We report new measurements of the total cross sections for e(+)e(-) -> Upsilon(nS)pi(+)pi(-) (n = 1, 2, 3) and e(+)e(-) -> b (b) over bar from a high-luminosity fine scan of the region root s = 10.63-11.05 GeV with the Belle detector. We observe that the Upsilon(nS)pi(+)pi(-) spectra have little or no nonresonant component and extract from them the masses and widths of Upsilon(10860) and Upsilon(11020) and their relative phase. We find M-10860 = (10891.1 +/- 3.2(-1.7)(+0.6)) MeV/c(2) and Gamma(10860) = (53.7(-5.6)(-5.4)(+7.1)(+1.3)) MeV and report first measurements M-11020 = (1098(-2.5)(-2.1)(+6.4)(+9.0)) MeV/c(2), Gamma(11020) = (61(-19)(-20)(+9)(+2)) MeV, and phi(11020) - phi 10860 = (-1.0 +/- 0.4(-0.1)(+1.4)) rad.

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