☆ 4.7 Article

Amplitude analysis of e+e- → Υ(nS)π+π- at √s=10.866 GeV

PHYSICAL REVIEW D (2015)

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Journal

PHYSICAL REVIEW D
Volume 91, Issue 7, Pages -

Publisher

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.91.072003

Keywords

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Categories

Astronomy & Astrophysics Physics, Particles & Fields

Funding

  1. Ministry of Education, Culture, Sports, Science, and Technology (MEXT) of Japan
  2. Japan Society for the Promotion of Science (JSPS)
  3. Tau-Lepton Physics Research Center of Nagoya University
  4. Australian Research Council
  5. Australian Department of Industry, Innovation, Science and Research
  6. Austrian Science Fund [P 22742-N16]
  7. National Natural Science Foundation of China [10575109, 10775142, 10825524, 10875115, 10935008, 11175187]
  8. Ministry of Education, Youth and Sports of the Czech Republic [LG14034]
  9. Carl Zeiss Foundation
  10. Deutsche Forschungsgemeinschaft
  11. Department of Science and Technology of India
  12. Istituto Nazionale di Fisica Nucleare of Italy
  13. WCU program of the Ministry Education Science and Technology
  14. National Research Foundation of Korea [2011-0029457, 2012-0008143, 2012R1A1A2008330, 2013R1A1A3007772]
  15. BRL program under NRF [KRF-2011-0020333, KRF-2011-0021196]
  16. Center for Korean J-PARC Users [NRF-2013K1A3A7A06056592]
  17. BK21 Plus program
  18. GSDC of the Korea Institute of Science and Technology Information
  19. Polish Ministry of Science and Higher Education
  20. National Science Center
  21. Ministry of Education and Science of the Russian Federation
  22. Russian Federal Agency for Atomic Energy
  23. Russian Foundation for Basic Research Grant [RFBR 12-02-01296, 12-02-33015]
  24. Slovenian Research Agency
  25. Basque Foundation for Science (IKERBASQUE)
  26. UPV/EHU under program UFI [11/55]
  27. Swiss National Science Foundation
  28. National Science Council
  29. Ministry of Education of Taiwan
  30. U.S. Department of Energy
  31. National Science Foundation
  32. MEXT for Science Research in a Priority Area (New Development of Flavor Physics)
  33. JSPS for Creative Scientific Research (Evolution of Tau-lepton Physics)
  34. VolkswagenStiftung
  35. Ministry of Education, Culture, Sports, Science, and Technology (MEXT) of Japan
  36. Japan Society for the Promotion of Science (JSPS)
  37. Tau-Lepton Physics Research Center of Nagoya University
  38. Australian Research Council
  39. Australian Department of Industry, Innovation, Science and Research
  40. Austrian Science Fund [P 22742-N16]
  41. National Natural Science Foundation of China [10575109, 10775142, 10825524, 10875115, 10935008, 11175187]
  42. Ministry of Education, Youth and Sports of the Czech Republic [LG14034]
  43. Carl Zeiss Foundation
  44. Deutsche Forschungsgemeinschaft
  45. Department of Science and Technology of India
  46. Istituto Nazionale di Fisica Nucleare of Italy
  47. WCU program of the Ministry Education Science and Technology
  48. National Research Foundation of Korea [2011-0029457, 2012-0008143, 2012R1A1A2008330, 2013R1A1A3007772]
  49. BRL program under NRF [KRF-2011-0020333, KRF-2011-0021196]
  50. Center for Korean J-PARC Users [NRF-2013K1A3A7A06056592]
  51. BK21 Plus program
  52. GSDC of the Korea Institute of Science and Technology Information
  53. Polish Ministry of Science and Higher Education
  54. National Science Center
  55. Ministry of Education and Science of the Russian Federation
  56. Russian Federal Agency for Atomic Energy
  57. Russian Foundation for Basic Research Grant [RFBR 12-02-01296, 12-02-33015]
  58. Slovenian Research Agency
  59. Basque Foundation for Science (IKERBASQUE)
  60. UPV/EHU under program UFI [11/55]
  61. Swiss National Science Foundation
  62. National Science Council
  63. Ministry of Education of Taiwan
  64. U.S. Department of Energy
  65. National Science Foundation
  66. MEXT for Science Research in a Priority Area (New Development of Flavor Physics)
  67. JSPS for Creative Scientific Research (Evolution of Tau-lepton Physics)
  68. VolkswagenStiftung
  69. Austrian Science Fund (FWF) [P 22742] Funding Source: researchfish
  70. National Research Foundation of Korea [2013R1A1A3007772] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)

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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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