Observation of ηb(2S) in Υ(2S) → γηb(2S), ηb(2S) → hadrons, and confirmation of ηb(1S) at CLEO

S. Dobbs; Z. Metreveli; A. Tomaradze; T. Xiao; Kamal K. Seth

doi:10.1063/1.4826804

Observation of η_b(2S) in Υ(2S) → γη_b(2S), η_b(2S) → hadrons, and confirmation of η_b(1S) at CLEO

S. Dobbs, Z. Metreveli, A. Tomaradze, T. Xiao, Kamal K. Seth

Physics and Astronomy

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

The data for 9.3 million Υ(2S) and 20.9 million Υ(1S) taken with the CLEO III detector have been used to study the radiative population of η_b(2S, 1S) states identified by their decay into twenty six different exclusive hadronic final states. In the Υ(2S) decays an enhancement is observed at a ∼ 5σ level, which is attributed to η_b(2S) and corresponds to the Υ(2S) hyperfine splitting of 48.7±2.3(stat)±2.1(syst) MeV. In the Υ(1S) decays, the identification of η_b(1S) is confirmed at a ∼ 3σ level with M(η_b(1S)) in agreement with its known value.

Original language	English (US)
Title of host publication	11th Conference on the Intersections of Particle and Nuclear Physics, CIPANP 2012
Pages	407-409
Number of pages	3
DOIs	https://doi.org/10.1063/1.4826804
State	Published - 2013
Event	11th Conference on the Intersections of Particle and Nuclear Physics, CIPANP 2012 - St. Petersburg, FL, United States Duration: May 29 2012 → Jun 3 2012

Publication series

Name	AIP Conference Proceedings
Volume	1560
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Other

Other	11th Conference on the Intersections of Particle and Nuclear Physics, CIPANP 2012
Country/Territory	United States
City	St. Petersburg, FL
Period	5/29/12 → 6/3/12

Keywords

Bottomonium spectroscopy

ASJC Scopus subject areas

Ecology, Evolution, Behavior and Systematics
Ecology
Plant Science
General Physics and Astronomy
Nature and Landscape Conservation

Access to Document

10.1063/1.4826804

Cite this

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title = "Observation of ηb(2S) in Υ(2S) → γηb(2S), ηb(2S) → hadrons, and confirmation of ηb(1S) at CLEO",

abstract = "The data for 9.3 million Υ(2S) and 20.9 million Υ(1S) taken with the CLEO III detector have been used to study the radiative population of ηb(2S, 1S) states identified by their decay into twenty six different exclusive hadronic final states. In the Υ(2S) decays an enhancement is observed at a ∼ 5σ level, which is attributed to ηb(2S) and corresponds to the Υ(2S) hyperfine splitting of 48.7±2.3(stat)±2.1(syst) MeV. In the Υ(1S) decays, the identification of ηb(1S) is confirmed at a ∼ 3σ level with M(ηb(1S)) in agreement with its known value.",

keywords = "Bottomonium spectroscopy",

author = "S. Dobbs and Z. Metreveli and A. Tomaradze and T. Xiao and Seth, {Kamal K.}",

year = "2013",

doi = "10.1063/1.4826804",

language = "English (US)",

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series = "AIP Conference Proceedings",

pages = "407--409",

booktitle = "11th Conference on the Intersections of Particle and Nuclear Physics, CIPANP 2012",

note = "11th Conference on the Intersections of Particle and Nuclear Physics, CIPANP 2012 ; Conference date: 29-05-2012 Through 03-06-2012",

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Dobbs, S, Metreveli, Z, Tomaradze, A, Xiao, T & Seth, KK 2013, Observation of η_b(2S) in Υ(2S) → γη_b(2S), η_b(2S) → hadrons, and confirmation of η_b(1S) at CLEO. in 11th Conference on the Intersections of Particle and Nuclear Physics, CIPANP 2012. AIP Conference Proceedings, vol. 1560, pp. 407-409, 11th Conference on the Intersections of Particle and Nuclear Physics, CIPANP 2012, St. Petersburg, FL, United States, 5/29/12. https://doi.org/10.1063/1.4826804

Observation of η_b(2S) in Υ(2S) → γη_b(2S), η_b(2S) → hadrons, and confirmation of η_b(1S) at CLEO. / Dobbs, S.; Metreveli, Z.; Tomaradze, A. et al.
11th Conference on the Intersections of Particle and Nuclear Physics, CIPANP 2012. 2013. p. 407-409 (AIP Conference Proceedings; Vol. 1560).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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AU - Dobbs, S.

AU - Metreveli, Z.

AU - Tomaradze, A.

AU - Xiao, T.

AU - Seth, Kamal K.

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N2 - The data for 9.3 million Υ(2S) and 20.9 million Υ(1S) taken with the CLEO III detector have been used to study the radiative population of ηb(2S, 1S) states identified by their decay into twenty six different exclusive hadronic final states. In the Υ(2S) decays an enhancement is observed at a ∼ 5σ level, which is attributed to ηb(2S) and corresponds to the Υ(2S) hyperfine splitting of 48.7±2.3(stat)±2.1(syst) MeV. In the Υ(1S) decays, the identification of ηb(1S) is confirmed at a ∼ 3σ level with M(ηb(1S)) in agreement with its known value.

AB - The data for 9.3 million Υ(2S) and 20.9 million Υ(1S) taken with the CLEO III detector have been used to study the radiative population of ηb(2S, 1S) states identified by their decay into twenty six different exclusive hadronic final states. In the Υ(2S) decays an enhancement is observed at a ∼ 5σ level, which is attributed to ηb(2S) and corresponds to the Υ(2S) hyperfine splitting of 48.7±2.3(stat)±2.1(syst) MeV. In the Υ(1S) decays, the identification of ηb(1S) is confirmed at a ∼ 3σ level with M(ηb(1S)) in agreement with its known value.

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