Searches for lepton number violating K+ -> pi(-)e(+)e(+) and K+ -> pi(-)pi(0)e(+)e(+) decays have been performed using the complete dataset collected by the NA62 experiment at CERN in 2016-2018. Upper limits of 5.3 x 10(-11 )and 8.5 x 10(-10) are obtained on the decay branching fractions at 90% confidence level. The former result improves by a factor of four over the previous best limit, while the latter result represents the first limit on the K+ -> pi(-)pi(0)e(+)e(+) decay rate. (C) 2022 The Author. Published by Elsevier B.V.

Searches for lepton number violating K+->pi+(pi0)e+e+ decays / Cortina Gil, E., Kleimenova, A., Minucci, E., Padolski, S., Petrov, P., Shaikhiev, A., Volpe, R., Numao, T., Petrov, Y., Velghe, B., Wong, V.W.S., Bryman, D., Fu, J., Husek, T., Jerhot, J., Kampf, K., Zamkovsky, M., Aliberti, R., Khoriauli, G., Kunze, J., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 830:(2022), pp. 1-10. [10.1016/j.physletb.2022.137172]

Searches for lepton number violating K+->pi+(pi0)e+e+ decays

G. D'Agostini;M. Raggi;A. Biagioni;P. Cretaro;E. Leonardi;A. Lonardo;P. Valente;P. Vicini;
2022

Abstract

Searches for lepton number violating K+ -> pi(-)e(+)e(+) and K+ -> pi(-)pi(0)e(+)e(+) decays have been performed using the complete dataset collected by the NA62 experiment at CERN in 2016-2018. Upper limits of 5.3 x 10(-11 )and 8.5 x 10(-10) are obtained on the decay branching fractions at 90% confidence level. The former result improves by a factor of four over the previous best limit, while the latter result represents the first limit on the K+ -> pi(-)pi(0)e(+)e(+) decay rate. (C) 2022 The Author. Published by Elsevier B.V.
2022
Kaon Rare Decay; Lepton Number Violation
01 Pubblicazione su rivista::01a Articolo in rivista
Searches for lepton number violating K+->pi+(pi0)e+e+ decays / Cortina Gil, E., Kleimenova, A., Minucci, E., Padolski, S., Petrov, P., Shaikhiev, A., Volpe, R., Numao, T., Petrov, Y., Velghe, B., Wong, V.W.S., Bryman, D., Fu, J., Husek, T., Jerhot, J., Kampf, K., Zamkovsky, M., Aliberti, R., Khoriauli, G., Kunze, J., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 830:(2022), pp. 1-10. [10.1016/j.physletb.2022.137172]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1664693
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