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Study of dipion bottomonium transitions and search for the h_{b}(1P) state

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Gershon, T. J. and Harrison, P. F. (2011) Study of dipion bottomonium transitions and search for the h_{b}(1P) state. Physical Review D, Vol.84 (No.1). Article 011104 . ISSN 0556-2821

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Abstract

We study inclusive dipion decays using a sample of 108 x 10(6)Y(3S) events recorded with the BABAR detector. We search for the decay mode Y(3S) -> pi(+)pi(-) h(b)(1P) and find no evidence for the bottomonium spin-singlet state h(b)(1P) in the invariant mass distribution recoiling against the pi(+)pi(-) system. Assuming the h(b)(1P) mass to be 9.900 GeV/c(2), we measure the upper limit on the branching fraction B[Y(3S) -> pi(+)pi(-) h(b)(1P)] < 1.2 x 10(-4), at 90% confidence level. We also investigate the chi(bJ)(2P) -> pi(+)pi(-) chi(bJ)(1P), Y(3S) -> pi(+)pi(-) Y(2S), and Y(2S) -> pi(+)pi(-) Y(1) dipion transitions and present an improved measurement of the branching fraction of the Y(3S) -> pi(+)pi(-) Y(2S) decay and of the Y(3S) - Y(2S) mass difference.

Item Type: Journal Article
Subjects: Q Science > QC Physics
Divisions: Faculty of Science > Physics
Library of Congress Subject Headings (LCSH): Quarkoniums, Charmonium, Particles (Nuclear physics) -- Research, Hadron interactions
Journal or Publication Title: Physical Review D
Publisher: American Physical Society
ISSN: 0556-2821
Official Date: 2011
Volume: Vol.84
Number: No.1
Page Range: Article 011104
Identification Number: 10.1103/PhysRevD.84.011104
Status: Peer Reviewed
Publication Status: Published
Funder: United States. Dept. of Energy, National Science Foundation (U.S.) (NSF), Natural Sciences and Engineering Research Council Canada (NSERC), France. Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Centre national de la recherche scientifique (France) (CNRS), Institut national de physique nucléaire et de physique des particules, Germany. Bundesministerium für Bildung und Forschung (BMBF), Deutsche Forschungsgemeinschaft (DFG), Istituto nazionale di fisica nucleare (INFN), Stichting voor Fundamenteel Onderzoek der Materie [Foundation for Fundamental Research on Matter] (FOM), Norges forskningsråd [Norwegian Research Council], Russia (Federation). Ministerstvo obrazovanii︠a︡ i nauki [Russia (Federation). Ministry of Education and Science], Spain. Ministerio de Educación y Ciencia (MEC), Science and Technology Facilities Council (Great Britain) (STFC)
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URI: http://wrap.warwick.ac.uk/id/eprint/38660

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