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Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/185382
Search for beautiful tetraquarks in the ϒ(1S)μ + μ − invariant-mass spectrum
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Abstract: The Υ(1S)µ +µ − invariant-mass distribution is investigated for a possible exotic meson state composed of two b quarks and two b quarks, Xbbbb . The analysis is based on a data sample of pp collisions recorded with the LHCb detector at centre-of-mass energies √ 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 Xbbbb state. The limits are set in the fiducial volume where all muons have pseudorapidity in the range [2.0, 5.0], and the Xbbbb state has rapidity in the range [2.0, 4.5] and transverse momentum less than 15 GeV/c. Keywords: B physics, Exotics, Hadron-Hadron scattering (experiments), Heavy quark production
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ALFONSO ALBERO, Alejandro, et al. Search for beautiful tetraquarks in the ϒ(1S)μ + μ − invariant-mass spectrum. Journal of High Energy Physics. 2018. Vol. 2018, num. 10, pags. 1-22. ISSN 1126-6708. [consulted: 19 of August of 2026]. Available at: https://hdl.handle.net/2445/185382