Search for the Xb and other hidden-beauty states in the π+πϒ(1S) channel at ATLAS

Atlas Collaboration

研究成果: Contribution to journalArticle

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This Letter presents a search for a hidden-beauty counterpart of the X(3872) in the mass ranges of 10.05–10.31 GeV and 10.40–11.00 GeV, in the channel Xb→π+πϒ(1S)(→μ+μ), using 16.2 fb−1 of s=8 TeV pp collision data collected by the ATLAS detector at the LHC. No evidence for new narrow states is found, and upper limits are set on the product of the Xb cross section and branching fraction, relative to those of the ϒ(2S), at the 95% confidence level using the CLS approach. These limits range from 0.8% to 4.0%, depending on mass. For masses above 10.1 GeV, the expected upper limits from this analysis are the most restrictive to date. Searches for production of the ϒ(13DJ), ϒ(10860), and ϒ(11020) states also reveal no significant signals.

元の言語英語
ページ(範囲)199-217
ページ数19
ジャーナルPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
740
DOI
出版物ステータス出版済み - 1 5 2015

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

フィンガープリント Search for the X<sub>b</sub> and other hidden-beauty states in the π<sup>+</sup>π<sup>−</sup>ϒ(1S) channel at ATLAS' の研究トピックを掘り下げます。これらはともに一意のフィンガープリントを構成します。

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