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Search for beautiful tetraquarks in the $\Upsilon(1S)\mu^+\mu^-$ invariant-mass spectrum

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Academic year: 2021

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Figure 1: Linear fit to the ratio of the X and Υ (1S) widths as a function of the X mass as determined from fits to simulated data samples
Figure 2: Distributions of m(µ + µ − ) for the normalisation datasets at pp centre-of-mass energies of (a) 7 TeV, (b) 8 TeV, (c) 13 TeV and (d) all combined
Figure 3: Distributions of m(2µ + 2µ − ) for the signal datasets at pp centre-of-mass energies of (a) 7 TeV, (b) 8 TeV, (c) 13 TeV and (d) all combined, using a bin size comparable to the expected X mass resolution
Figure 4: The 95 % CL upper limits on S ≡ σ(pp → X) × B(X → Υ (1S)µ + µ − ) × B(Υ (1S) → µ + µ − ) as functions of the X mass hypothesis at pp centre-of-mass energies of (a) 7 TeV, (b) 8 TeV and (c) 13 TeV and (d) all combined.
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