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Search for beautiful tetraquarks in the [upsilon](1S)[mu]+[mu]− invariant-mass spectrum

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The ϒ(1S)μ+μ− invariant-mass distribution is investigated for a possible exotic meson state composed of two b quarks and two b¯¯b¯ \overline{b} quarks, Xbb¯bb¯Xbb¯bb¯ {X}_{b\overline{b}b\overline{b}} . The analysis is based on a data sample of pp collisions recorded with the LHCb detector at centre-...

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Main Authors: Aaij, Roel (Author) , D'Argent, Philippe (Author) , Bachmann, Sebastian (Author) , Berninghoff, Daniel (Author) , Braun, Svende (Author) , De Cian, Michel (Author) , Comerma-Montells, Albert (Author) , Dordei, Francesca (Author) , Dziewiecki, Michal (Author) , Gerick, David (Author) , Grabowski, Jascha (Author) , Han, Xiaoxue (Author) , Hansmann-Menzemer, Stephanie (Author) , Kecke, Matthieu (Author) , Khanji, Basem (Author) , Kolpin, Michael (Author) , Kopecná, Renata (Author) , Leverington, Blake (Author) , Marks, Jörg (Author) , Mitzel, Dominik (Author) , Neubert, Sebastian (Author) , Neuner, Max (Author) , Piucci, Alessio (Author) , Stahl, Marian (Author) , Stemmle, Simon (Author) , Tilburg, Jeroen van (Author) , Uwer, Ulrich (Author) , Zhelezov, Alexey (Author)
Corporate Author: LHCb Collaboration (Author)
Format: Article (Journal)
Language:English
Published: October 12, 2018
In: Journal of high energy physics
Year: 2018, Issue: 10
ISSN:1029-8479
DOI:10.1007/JHEP10(2018)086
Online Access:Verlag, Volltext: https://doi.org/10.1007/JHEP10(2018)086
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Author Notes:the LHCb collaboration
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Summary:The ϒ(1S)μ+μ− invariant-mass distribution is investigated for a possible exotic meson state composed of two b quarks and two b¯¯b¯ \overline{b} quarks, Xbb¯bb¯Xbb¯bb¯ {X}_{b\overline{b}b\overline{b}} . The analysis is based on a data sample of pp collisions recorded with the LHCb detector at centre-of-mass energies s√=7s=7 \sqrt{s}=7 , 8 and 13 TeV, corresponding to an integrated luminosity of 6.3 fb−1. No significant excess is found, and upper limits are set on the product of the production cross-section and the branching fraction as functions of the mass of the Xbb¯bb¯Xbb¯bb¯ {X}_{b\overline{b}b\overline{b}} state. The limits are set in the fiducial volume where all muons have pseudorapidity in the range [2.0, 5.0], and the Xbb¯bb¯Xbb¯bb¯ {X}_{b\overline{b}b\overline{b}} state has rapidity in the range [2.0, 4.5] and transverse momentum less than 15 GeV/c. Open image in new window
Item Description:Im Titel sind "+" und "+" hochgestellt
Im Titel werden Ypsilon und mu als griechische Buchstaben dargestellt
The LHCb collaboration: R. Aaij, P. d'Argent, S. Bachmann, D. Berninghoff, S. Braun, A. Comerma-Montells, M. De Cian, F. Dordei, M. Dziewiecki, D. Gerick, J.P. Grabowski, X. Han, S. Hansmann-Menzemer, M. Kecke, B. Khanji, M. Kolpin, R. Kopecna, B. Leverington, J. Marks, D.S. Mitzel, S. Neubert, M. Neuner, A. Piucci, M. Stahl, S. Stemmle, J. van Tilburg, U. Uwer, A. Zhelezov [und weitere]
Gesehen am 17.04.2019
Physical Description:Online Resource
ISSN:1029-8479
DOI:10.1007/JHEP10(2018)086

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