Search for Lepton Number Violating Decays B+→π−μ+μ+ and B+→K−μ+μ+
| Autor: | Abellan Beteta, Carlos, Calvo Gómez, Míriam, Camboni, Alessandro, Comerma Montells, Albert, Domingo Bonal, Francesc, Enterria i Adan, David G. d', Garrido Beltrán, Lluís, Gascón Fora, David, Grabalosa Gándara, Marc, Graciani Díaz, Ricardo, Graugés Pous, Eugeni, López Asamar, Elias, Musy, Marco, Pérez-Calero Yzquierdo, Antonio, Picatoste Olloqui, Eduardo, Pie Valls, B. (Blai), Potterat, Cédric, Puig Navarro, Albert, Roselló, M., Ruiz, Hugo (Ruiz Pérez), Vázquez Gómez, Ricard, Vilasis-Cardona, Xavier, LHCb Collaboration |
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| Přispěvatelé: | Universitat de Barcelona |
| Předmět: | |
| Zdroj: | Recercat. Dipósit de la Recerca de Catalunya instname Dipòsit Digital de la UB Universidad de Barcelona |
| Popis: | A search is performed for the lepton number violating decay B + → h − μ + μ + , where h − represents a K − or a π − , using an integrated luminosity of 36 pb − 1 of data collected with the LHCb detector. The decay is forbidden in the standard model but allowed in models with a Majorana neutrino. No signal is observed in either channel and limits of B ( B + → K − μ + μ + ) < 5.4 × 10 − 8 and B ( B + → π − μ + μ + ) < 5.8 × 10 − 8 are set at the 95% confidence level. These improve the previous best limits by factors of 40 and 30, respectively. |
| Databáze: | OpenAIRE |
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