TY - GEN
T1 - Lepton flavour universality and lepton flavour conservation tests in kaon decays at CERN
AU - NA62 Collaboration
AU - Podolsky, Sergey
AU - Aglieri Rinella, G.
AU - Ambrosino, F.
AU - Angelucci, B.
AU - Antonelli, A.
AU - Anzivino, G.
AU - Arcidiacono, R.
AU - Azhinenko, I.
AU - Balev, S.
AU - Biagioni, A.
AU - Biino, C.
AU - Bizzeti, A.
AU - Blazek, T.
AU - Blik, A.
AU - Bloch-Devaux, B.
AU - Bolotov, V.
AU - Bonaiuto, V.
AU - Britton, D.
AU - Britvich, G.
AU - Brook, N.
AU - Bucci, F.
AU - Buescher, V.
AU - Butin, F.
AU - Capussela, T.
AU - Carassiti, V.
AU - Cartiglia, N.
AU - Cassese, A.
AU - Catinaccio, A.
AU - Heath, H.
AU - Page, R.
PY - 2013
Y1 - 2013
N2 - A precision measurement of the ratio of the rates of kaon leptonic decays K± → e± v and K± → μ±v with the full minimum bias data sample collected with low intensity 75 GeV/c beam by the NA62 experiment at CERN in 2007-2008 is reported. The result, obtained by analyzing 150,000 reconstructed K ± → e± v candidates with 11% background contamination, has a record precision of 0.4% and is in agreement with the Standard Model expectation. An improved upper limit on the rate of the lepton number violating decay K± → π±μ ±μ± from the NA48/2 experiment, which probes the resonant enhancement of the rate in the presence of heavy Majorana neutrinos in the 100 MeV range, is also reported. The prospects for the searches of lepton number and flavour violating decays of the charged kaon with an improved sensitivity down to 10-12 during the forthcoming main phase of the NA62 experiment are discussed.
AB - A precision measurement of the ratio of the rates of kaon leptonic decays K± → e± v and K± → μ±v with the full minimum bias data sample collected with low intensity 75 GeV/c beam by the NA62 experiment at CERN in 2007-2008 is reported. The result, obtained by analyzing 150,000 reconstructed K ± → e± v candidates with 11% background contamination, has a record precision of 0.4% and is in agreement with the Standard Model expectation. An improved upper limit on the rate of the lepton number violating decay K± → π±μ ±μ± from the NA48/2 experiment, which probes the resonant enhancement of the rate in the presence of heavy Majorana neutrinos in the 100 MeV range, is also reported. The prospects for the searches of lepton number and flavour violating decays of the charged kaon with an improved sensitivity down to 10-12 during the forthcoming main phase of the NA62 experiment are discussed.
UR - https://www.scopus.com/pages/publications/84888427985
M3 - Conference Contribution (Conference Proceeding)
AN - SCOPUS:84888427985
T3 - Proceedings of Science
BT - Proceedings of Science
T2 - 21st International Workshop on Deep-Inelastic Scattering and Related Subjects, DIS 2013
Y2 - 22 April 2013 through 26 April 2013
ER -