Search for excited B[subscript c][superscript +] states
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13130_2018_Article_7504.pdf
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Author(s)
Aaij, R.
Adeva, B.
Adinolfi, M.
Ajaltouni, Z.
Akar, S.
Albrecht, J.
Alessio, F.
Alexander, M.
Alfonso Albero, A.
Ali, S.
Date Issued
January 2018
Journal
Journal of High Energy Physics
Publisher
Springer International Publishing AG
Citation
Aaij, R. et al. "Search for excited B[subscript c][superscript +] states." Journal of High Energy Physics 2018 (January 2018): 138 © 2018 The Author(s)
Version
Final published version
Abstract
A search is performed in the invariant mass spectrum of the B[subscript c]⁺ π⁺π⁻ system for the excited B[subscript c]⁺ states B[subscript c](2¹S₀)⁺ and B[subscript c] (2³S₁)⁺ using a data sample of pp collisions collected by the LHCb experiment at the centre-of-mass energy of √s = 8 TeV, corresponding to an integrated luminosity of 2 fb⁻¹. No evidence is seen for either state. Upper limits on the ratios of the production cross-sections of the B[subscript c] (2¹S₀)⁺ and B[subscript c] (2³S₁)⁺ states times the branching fractions of B[subscript c] (2¹S₀)⁺ →B[subscript c]⁺ π⁺π⁻ and B[subscript c] (2³S₁)⁺ → B[subscript c] *⁺π⁺π⁻ over the production cross-section of the B[subscript c]⁺ state are given as a function of their masses. They are found to be between 0.02 and 0.14 at 95% confidence level for B[subscript c] (2¹S₀)⁺ and B[subscript c] (2³S₁)⁺ in the mass ranges [6830, 6890] MeV/c² and [6795, 6890] MeV/c², respectively. Keywords: B physics; Hadron-Hadron scattering (experiments); Spectroscopy
MIT Department
Massachusetts Institute of Technology. Department of Physics
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Creative Commons Attribution
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DOI of Published Version
http://dx.doi.org/10.1007/JHEP01(2018)138
