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Title: Search for the Xb 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 Xb → 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 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. As a result, searches for production of the Υ (13DJ), 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