Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/101781
Citations
Scopus Web of Science® Altmetric
?
?
Type: Journal article
Title: Observation of a new χb state in radiative transitions to Υ(1S) and Υ(2S) at ATLAS
Other Titles: Observation of a new chi b state in radiative transitions to Upsilon(1S) and Upsilon(2S) at ATLAS
Author: Aad, G.
ATLAS Collaboration
Citation: Physical Review Letters, 2012; 108(15):152001-1-152001-17
Publisher: American Physical Society
Issue Date: 2012
ISSN: 0031-9007
1079-7114
Statement of
Responsibility: 
G. Aad ... P. Jackson ... L. Lee ... A. Petridis ... N. Soni ... M.J. White ... et al. (ATLAS Collaboration)
Abstract: The χb(nP) quarkonium states are produced in proton-proton collisions at the Large Hadron Collider at √s = 7  TeV and recorded by the ATLAS detector. Using a data sample corresponding to an integrated luminosity of 4.4  fb⁻¹, these states are reconstructed through their radiative decays to Υ(1S,2S) with Υ→μ⁺μ⁻. In addition to the mass peaks corresponding to the decay modes χb(1P,2P)→Υ(1S)γ, a new structure centered at a mass of 10.530±0.005(stat)±0.009(syst)  GeV is also observed, in both the Υ(1S)γ and Υ(2S)γ decay modes. This structure is interpreted as the χb(3P) system.
Keywords: ATLAS Collaboration; ATLAS Collaboration; ATLAS Collaboration; ATLAS Collaboration
Rights: © 2012 CERN, for the ATLAS Collaboration. Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.
RMID: 0020132799
DOI: 10.1103/PhysRevLett.108.152001
Appears in Collections:Physics publications

Files in This Item:
File Description SizeFormat 
hdl_101781.pdfPublished version511.48 kBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.