# NA62 Papers

2017-04-11
12:59
 Search for Heavy Neutrinos in $K^+ \rightarrow \mu^+ \nu_{\mu}$ Decays / Lazzeroni, Cristina (Birmingham U.) ; Lurkin, Nicolas (Birmingham U.) ; Newson, Francis (Birmingham U.) ; Romano, Angela (Birmingham U.) ; Ceccucci, Augusto (CERN) ; Danielsson, Hans (CERN) ; Falaleev, Valeri (CERN) ; Gatignon, Lau (CERN) ; Goy Lopez, Silvia (CERN) ; Hallgren, Bjorn (CERN) et al. The NA62 experiment recorded a large sample of $K^+ \rightarrow \mu^+ \nu_{\mu}$ decays in 2007. A peak search has been performed in the reconstructed missing mass spectrum. [...] CERN-EP-2017-114; arXiv:1705.07510.- Geneva : CERN, 2017-09-10 - 7 p. - Published in : Phys. Lett. B 772 (2017) 712-718 Article from SCOAP3: PDF; Draft (restricted): PDF; Fulltext: PDF; Preprint: PDF;

2016-10-28
14:19
 Measurement of the $\pi^0$ electromagnetic transition form factor slope / NA62 Collaboration The NA62 experiment collected a large sample of charged kaon decays in 2007 with a highly efficient trigger for decays into electrons. A measurement of the $\pi^{0}$ electromagnetic transition form factor slope parameter from $1.11\times10^{6}$ fully reconstructed $K^\pm \to \pi^\pm \pi^0_D, \; \pi^0_D \to e^+ e^- \, \gamma$ events is reported. [...] CERN-EP-2016-323; arXiv:1612.08162.- Geneva : CERN, 2017-05-10 - 8 p. - Published in : Phys. Lett. B 768 (2017) 38-45 Article from SCOAP3: PDF; Draft (restricted): PDF; Fulltext: PDF; Preprint: PDF;

2013-09-02
16:47
 Study of the $K^{\pm} \rightarrow \pi^{\pm} \gamma \gamma$ decay by the NA62 experiment / NA62 Collaboration A study of the dynamics of the rare decay $K^\pm\to\pi^\pm\gamma\gamma$ has been performed on a sample of 232 decay candidates, with an estimated background of $17.4\pm1.1$ events, collected by the NA62 experiment at CERN in 2007. The results are combined with those from a measurement conducted by the NA48/2 collaboration at CERN. [...] CERN-PH-EP-2014-025; arXiv:1402.4334; CERN-PH-EP-2014-025.- Geneva : CERN, 2014-05-01 - 17 p. - Published in : Phys. Lett. B 732 (2014) 65-74 Article from SCOAP3: PDF; Draft (restricted): PDF; Elsevier Open Access article: PDF; Fulltext: arXiv:1402.4334 - PDF; authors list - TEX; CERN-PH-EP-2014-025 - PDF; External link: Fulltext

2012-09-21
21:27
 Measurement of the branching ratio of the decay $\Xi^{0} \rightarrow \Sigma^{+} \mu^{-} \overline{\nu}_{\mu}$ / NA48/1 Collaboration From the 2002 data taking with a neutral kaon beam extracted from the CERN-SPS, the NA48/1 experiment observed 97 $\Xi^{0}\rightarrow \Sigma^{+} \mu^{-} \bar{\nu}_{\mu}$ candidates with a background contamination of $30.8 \pm 4.2$ events. From this sample, the BR($\Xi^{0}\rightarrow \Sigma^{+} \mu^{-} \bar{\nu}_{\mu}$) is measured to be $(2.17 \pm 0.32_{\mathrm{stat}}\pm 0.17_{\mathrm{syst}})\times10^{-6}$.. CERN-PH-EP-2012-288; arXiv:1212.3131; CERN-PH-EP-2012-288.- Geneva : CERN, 2013 - 12 p. - Published in : Phys. Lett. B 720 (2013) 105-110 Draft (restricted): PDF; Fulltext: muon_paper_accepted - PDF; arXiv:1212.3131 - PDF; Preprint: PDF; External link: Preprint

2012-03-26
12:37
 Precision Measurement of the Ratio of the Charged Kaon Leptonic Decay Rates / Lazzeroni, C. (Birmingham U.) ; Romano, A. (Birmingham U.) ; Ceccucci, A. (CERN) ; Danielsson, H. (CERN) ; Falaleev, V. (CERN) ; Gatignon, L. (CERN) ; Goy Lopez, S. (CERN ; Madrid, CIEMAT) ; Hallgren, B. (CERN ; Birmingham U.) ; Maier, A. (CERN) ; Peters, A. (CERN) et al. A precision measurement of the ratio $R_K$ of the rates of kaon leptonic decays $K^\pm \to e^\pm\nu$ and $K^\pm \to \mu^\pm \nu$ with the full data sample collected by the NA62 experiment at CERN in $2007-2008$ is reported. The result, obtained by analysing $\sim\!150000$ reconstructed $K^\pm \to e^\pm \nu$ candidates with $11\%$ background contamination, is $R_K = (2.488\pm0.010)\times10^{-5}$, in agreement with the Standard Model expectation.. arXiv:1212.4012; CERN-PH-EP-2012-367; CERN-PH-EP-2012-367.- Geneva : CERN, 2013-02-26 - 18 p. - Published in : Phys. Lett. B 719 (2013) 326-336 Draft (restricted): PDF; Fulltext: authors list - TEX; arXiv:1212.4012 - PDF; CERN-PH-EP-2012-367 - PDF; External link: Fulltext

2011-01-08
19:08
 Test of Lepton Flavour Universality in $K^{+} \to l^{+}\nu$ Decays / NA62 Collaboration A precision test of lepton flavour universality has been performed by measuring the ratio RK of kaon leptonic decay rates K+ --> e+nu and K+ --> mu+nu in a sample of 59813 reconstructed K+ --> e+nu candidates with (8.71 +- 0.24)% background contamination. The result RK = (2.487 +- 0.013) * 10^{-5} is in agreement with the Standard Model expectation.. arXiv:1101.4805; CERN-PH-EP-2011-004.- 2011 - 16 p. - Published in : Phys. Lett. B 698 (2011) 105-114 Draft (restricted): PDF; Fulltext: PDF; External link: Preprint