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http://hdl.handle.net/2445/185382| Title: | Search for beautiful tetraquarks in the ϒ(1S)μ + μ − invariant-mass spectrum |
| Author: | Alfonso Albero, Alejandro Calvo Gómez, Míriam Camboni, Alessandro Coquereau, Samuel Garrido Beltrán, Lluís Gascón Fora, David Gironella Gironell, Pere Graciani Diaz, Ricardo Graugés Pous, Eugeni Vazquez Gomez, R. Marin Benito, Carla LHCb Collaboration |
| Keywords: | Hadrons Gran Col·lisionador d'Hadrons Física de partícules Experiments Hadrons Large Hadron Collider (France and Switzerland) Particle physics Experiments |
| Issue Date: | 2018 |
| Publisher: | Springer Verlag |
| Abstract: | 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 |
| Note: | Reproducció del document publicat a: https://doi.org/10.1007/JHEP10(2018)086 |
| It is part of: | Journal of High Energy Physics, 2018, vol. 2018, num. 10, p. 1-22 |
| URI: | http://hdl.handle.net/2445/185382 |
| Related resource: | https://doi.org/10.1007/JHEP10(2018)086 |
| ISSN: | 1126-6708 |
| Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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