Search for beautiful tetraquarks in the γ(1S)μ+μ- invariant-mass spectrum



Aaij, R, Adeva, B, Adinolfi, M, Aidala, CA, Ajaltouni, Z, Akar, S, Albicocco, P, Albrecht, J, Alessio, F, Alexander, M
et al (show 828 more authors) (2018) Search for beautiful tetraquarks in the γ(1S)μ+μ- invariant-mass spectrum. JOURNAL OF HIGH ENERGY PHYSICS, 10 (10). 086-.

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Abstract

The $\Upsilon(1S)\mu^+\mu^-$ invariant-mass distribution is investigated for a possible exotic meson state composed of two $b$ quarks and two $\overline{b}$ quarks, $X_{b\overline{b}b\overline{b}}$. The analysis is based on a data sample of $pp$ collisions recorded with the LHCb detector at centre-of-mass energies $\sqrt{s} =$ 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 $X_{b\overline{b}b\overline{b}}$ state. The limits are set in the fiducial volume where all muons have pseudorapidity in the range $[2.0,5.0]$, and the $X_{b\overline{b}b\overline{b}}$ state has rapidity in the range $[2.0,4.5]$ and transverse momentum less than 15 GeV/$c$.

Item Type: Article
Additional Information: All figures and tables, along with any supplementary material and additional information, are available at https://lhcbproject.web.cern.ch/lhcbproject/Publications/LHCbProjectPublic/LHCb-PAPER-2018-027.html
Uncontrolled Keywords: B physics, Exotics, Hadron-Hadron scattering (experiments), Heavy quark production
Depositing User: Symplectic Admin
Date Deposited: 03 Dec 2018 10:15
Last Modified: 10 Oct 2023 22:25
DOI: 10.1007/JHEP10(2018)086
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3029300