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http://hdl.handle.net/2445/185369| Title: | Observation of the semileptonic decay B+→ pp¯ μ+νμ |
| Author: | LHCb Collaboration Alfonso Albero, Alejandro Calvo Gómez, Míriam Camboni, Alessandro Coquereau, Samuel García Moreno, P. Garrido Beltrán, Lluís Gascón Fora, David Gironella Gironell, Pere Golobardes, E. Graciani Díaz, Ricardo Graugés Pous, Eugeni Manera Escalero, R. Marin Benito, Carla Vázquez Gómez, Ricard Vilasis-Cardona, Xavier |
| Keywords: | Hadrons Gran Col·lisionador d'Hadrons Física de partícules Experiments Hadrons Large Hadron Collider (France and Switzerland) Particle physics Experiments |
| Issue Date: | 25-Mar-2020 |
| Publisher: | Springer Verlag |
| Abstract: | The Cabibbo-suppressed semileptonic decay B+→pp¯¯¯μ+νμ is observed for the first time using a sample of pp collisions corresponding to an integrated luminosity of 1.0, 2.0 and 1.7 fb−1 at centre-of-mass energies of 7, 8 and 13 TeV, respectively. The differential branching fraction is measured as a function of the pp¯¯¯ invariant mass using the decay mode B+ → J/ψK+ for normalisation. The total branching fraction is measured to be B(B+→pp¯¯¯μ+νμ)= (5.27+0.23−0.24±0.21±0.15)×10−6, where the first uncertainty is statistical, the second systematic and the third is from the uncertainty on the branching fraction of the normalisation channel. |
| Note: | Reproducció del document publicat a: https://doi.org/10.1007/JHEP03(2020)146 |
| It is part of: | Journal of High Energy Physics, 2020, num. 146 |
| URI: | http://hdl.handle.net/2445/185369 |
| Related resource: | https://doi.org/10.1007/JHEP03(2020)146 |
| ISSN: | 1126-6708 |
| Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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| 710501.pdf | 1.08 MB | Adobe PDF | View/Open |
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