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Title: Search for the X b and other hidden-beauty states in the π +π -Υ(1S) channel at ATLAS

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 X b → π +π -Υ (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 X b cross section and branching fraction, relative to those of the Υ(2S), at the 95% confidence level using the CL S 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. As a result, searches for production of the Υ (1 3D J), Υ(10860), and Υ(11020) states also reveal no significant signals
Authors:
 [1] ;  [2] ;  [3] ;  [4]
  1. National Centre for Scientific Research (CNRS), Marseilles (France). Centre for Particle Physics of Marseilles (CPPM); Aix-Marseille Univ. (France)
  2. Univ. of Oklahoma, Norman, OK (United States). Homer L. Dodge Dept. of Physics and Astronomy
  3. Inst. of Physics, Academia Sinica, Taipei (Taiwan)
  4. Univ. Paris-Sud, Orsay (France). Linear Accelerator Lab. (LAL) and CNRS/IN2P3. et al.
Publication Date:
Report Number(s):
BNL-107609-2015-JA
Journal ID: ISSN 0370-2693; KA1101021; TRN: US1601113
Grant/Contract Number:
SC00112704; AC02-06CH11357; AC03-76SF00515; AC02-05CH11231
Type:
Published Article
Journal Name:
Physics Letters. Section B
Additional Journal Information:
Journal Volume: 740; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Research Org:
Brookhaven National Laboratory (BNL), Upton, NY (United States); Argonne National Lab. (ANL), Argonne, IL (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org:
USDOE Office of Science (SC)
Contributing Orgs:
ATLAS Collaboration
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
OSTI Identifier:
1213871
Alternate Identifier(s):
OSTI ID: 1172110; OSTI ID: 1222949; OSTI ID: 1223105; OSTI ID: 1223274; OSTI ID: 1223275