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Type: Journal article
Title: Search for the Xb and other hidden-beauty states in the π⁺ π⁻ Υ (1S) channel at ATLAS
Other Titles: Search for the Xb and other hidden-beauty states in the pi(+) pi(-) Upsilon (1S) channel at ATLAS
Author: ATLAS Collaboration
Aad, G.
Citation: Physics Letters B, 2015; 740:199-217
Publisher: Elsevier
Issue Date: 2015
ISSN: 0370-2693
Statement of
G. Aad … P. Jackson … L. Lee … A. Petridis … N. Soni ... M. White ... et al. (ATLAS Collaboration)
Abstract: This Letter presents a search for a hidden-beauty counterpart of the X(3872)X(3872) in the mass ranges of 10.05–10.31 GeV and 10.40–11.00 GeV, in the channel Xb→π+π−ϒ(1S)(→μ+μ−)Xb→π+π−ϒ(1S)(→μ+μ−), using 16.2 fb−1 of √s = 8 TeVpp 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 XbXb cross section and branching fraction, relative to those of the ϒ(2S)ϒ(2S), at the 95% confidence level using the CLSCLS 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(13DJ), ϒ(10860), and ϒ(11020) states also reveal no significant signals.
Rights: © 2014 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license ( Funded by SCOAP3.
RMID: 0030018914
DOI: 10.1016/j.physletb.2014.11.055
Appears in Collections:Physics publications

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