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Search for the X-b and other hidden-beauty states in the pi(+)pi(-)gamma(1S) channel at ATLAS
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
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Number of Authors: 2898
2015 (English)In: Physics Letters B, ISSN 0370-2693, E-ISSN 1873-2445, Vol. 740, 199-217 p.Article in journal (Refereed) Published
Abstract [en]

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 -> pi(+)pi(-)gamma(1S)(-> mu(+)mu(-)), using 16.2 fb(-1) of root 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 gamma(25), 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 gamma(1(3)D(J)), gamma(10860), and gamma(11 020) states also reveal no significant signals.

Place, publisher, year, edition, pages
2015. Vol. 740, 199-217 p.
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-160446DOI: 10.1016/j.physletb.2014.11.055ISI: 000347046200028Scopus ID: 2-s2.0-84916910005OAI: oai:DiVA.org:kth-160446DiVA: diva2:789628
Funder
Swedish Research CouncilKnut and Alice Wallenberg Foundation
Note

QC 20150219

Available from: 2015-02-19 Created: 2015-02-19 Last updated: 2017-12-04Bibliographically approved

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Strandberg, Jonas

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