Study of η and dipion transitions in ϒ(4S) decays to lower bottomonia

Citation data:

Physical Review D, ISSN: 2470-0029, Vol: 96, Issue: 5

Publication Year:
2017
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Repository URL:
https://digitalcommons.kennesaw.edu/facpubs/4197; http://arxiv.org/abs/1707.04973
DOI:
10.1103/physrevd.96.052005
Author(s):
G. Schnell; C. Van Hulse; S. Jia; C. P. Shen; V. Aulchenko; A. Bobrov; A. Bondar; S. Eidelman; D. Epifanov; N. Gabyshev; A. Garmash; P. Krokovny; A. Kuzmin; D. Matvienko; V. Shebalin; B. Shwartz; Y. Usov; A. Vinokurova; V. Vorobyev; V. Zhilich; V. Zhulanov; D. Červenkov; Z. DoleŽal; Z. Drásal; P. Kodyš; K. K. Joo; K. Kinoshita; B. Pal; S. Sandilya; T. Ferber; G. Inguglia; G. Karyan; A. Rostomyan; H. Ye; I. Jaegle; J. S. Lange; I. Adachi; J. Haba; T. Hara; R. Itoh; M. Nakao; S. Nishida; Y. Sakai; K. Sumisawa; K. Trabelsi; S. Uno; S. K. Choi; B. G. Cheon; S. H. Kim; Y. Unno; T. E. Browder; M. T. Hedges; D. Kotchetkov; P. Lewis; G. Varner; Y. Iwasaki; D. Liventsev; M. Nayak; C. Pulvermacher; L. Santelj; X. L. Wang; M. Takizawa; V. Bhardwaj; N. Dash; B. Bhuyan; K. J. Nath; P. Behera; J. Libby; W. W. Jacobs; A. Vossen; P. Wang; C. Z. Yuan; C. Schwanda; A. Sokolov; M. Merola; S. Pardi; E. Guido; R. Mussa; U. Tamponi; K. Tanida; J. Biswal; M. Bračko; S. Korpar; P. KriŽan; M. Lubej; T. Nanut; R. Pestotnik; M. Starič; A. Zupanc; Y. Watanabe; M. Gelb; P. Goldenzweig; D. Joffe; R. Kulasiri; I. Badhrees; S. Al Said; K. Cho; Y. J. Kim; J. B. Kim; K. T. Kim; H. K. Moon; E. Won; M. Niiyama; H. B. Jeon; K. H. Kang; M. J. Kim; H. Park; O. Schneider; K. Chilikin; R. Mizuk; P. Pakhlov; G. Pakhlova; E. Solovieva; T. Uglov; M. Ritter; T. K. Pedlar; V. Chekelian; L. Li Gioi; F. Simon; T. Julius; C. H. Li; M. E. Sevior; F. Tenchini; T. Matsuda; V. Zhukova; T. Aushev; T. Iijima; K. Inami; T. Mori; H. Hayashii; K. Miyabayashi; A. Chen; C. H. Wang; W. S. Hou; J. G. Shiu; A. Bozek; Z. Natkaniec; H. Ono; Y. Yamashita; K. Hayasaka; T. Kawasaki; H. Miyata; Y. Seino; M. Watanabe; E. Nakano; D. M. Asner; V. Bansal; J. E. Fast; B. G. Fulsom; J. F. Strube; T. Luo; N. K. Nisar; V. Savinov; L. Li; Z. P. Zhang; D. Y. Kim; E. Widmann; Y. Choi; A. M. Bakich; R. Ayad; S. Paul; S. Ogawa; A. Ishikawa; T. Sanuki; S. Watanuki; M. Masuda; H. Aihara; Y. Jin; T. A. Shibata; M. Uchida; T. Kumita; T. Sumiyoshi; V. Gaur; L. E. Piilonen; K. M. Williams; D. Cinabro; S. Di Carlo; H. Farhat; R. Gillard; K. Senyo; Y. J. Kwon; C. S. Park Show More Hide
Publisher(s):
American Physical Society (APS)
Tags:
Physics and Astronomy; particle decays; Physics; High Energy Physics - Experiment
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article description
We study hadronic transitions between bottomonium states using 496 fb-1 data collected at the ?(4S) resonance with the Belle detector at the KEKB asymmetric energy e+e-collider. We measure B(?(4S)→π+π(1S))=(8.2±0.5(stat)±0.4(syst))×10-5, B(?(4S)→π+π(2S))=(7.9±1.0(stat)±0.4(syst))×10-5, and B(?(4S)→η?(1S))=(1.70±0.23(stat)±0.08(syst))×10-4. We measure the ratio of branching fractions R=B(?(4S)→η?(1S))/B(?(4S)→π+π(1S))=2.07±0.30(stat)±0.11(syst). We search for the decay ?(1D31,2)→η?(1S), but do not find significant evidence for such a transition. We also measure the initial-state radiation production cross sections of the ?(2S,3S) resonances and we find values compatible with the expected ones. Finally, the analysis of the ?(4S)→π+π(1S) events shows indications for a resonant contribution due to the f0(980) meson.