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CERN Document Server 2,046 records found  1 - 10nextend  jump to record: Search took 1.60 seconds. 
1.
(100)
High Intensity Kaon Experiments (HIKE) at the CERN SPS: Proposal for Phases 1 and 2 / HIKE Collaboration
A timely and long-term programme of kaon decay measurements at an unprecedented level of precision is presented, leveraging the capabilities of the CERN Super Proton Synchrotron (SPS). [...]
arXiv:2311.08231 ; CERN-SPSC-2023-031 ; SPSC-P-368. - 2023. - 147 p.
Fulltext - Fulltext
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2.
(91)
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. [...]
arXiv:1705.07510; CERN-EP-2017-114.- Geneva : CERN, 2017-09-10 - 7 p. - Published in : Phys. Lett. B 772 (2017) 712-718 Article from SCOAP3: PDF; Draft (restricted): PDF; Fulltext: arXiv:1705.07510 - PDF; CERN-EP-2017-114 - PDF;
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3.
(81)
The beam and detector of the NA62 experiment at CERN / NA62 Collaboration
NA62 is a fixed-target experiment at the CERN SPS dedicated to measurements of rare kaon decays. Such measurements, like the branching fraction of the $K^{+} \rightarrow \pi^{+} \nu \bar\nu$ decay, have the potential to bring significant insights into new physics processes when comparison is made with precise theoretical predictions. [...]
arXiv:1703.08501.- 2017-05-31 - 121 p. - Published in : JINST 12 (2017) P05025 Fulltext: arXiv:1703.08501 - PDF; 10.1088_1748-0221_12_05_P05025 - PDF; IOP OA article: PDF;
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4.
(77)
Search for heavy neutral lepton production in $K^+$ decays / NA62 Collaboration
A search for heavy neutral lepton production in $K^+$ decays using a data sample collected with a minimum bias trigger by the NA62 experiment at CERN in 2015 is reported. Upper limits at the $10^{-7}$ to $10^{-6}$ level are established on the elements of the extended neutrino mixing matrix $|U_{\ell 4}|^2$ ($\ell=e,\mu$) for heavy neutral lepton mass in the range $170-448~{\rm MeV}/c^2$. [...]
arXiv:1712.00297; CERN-EP-2017-311.- Geneva : CERN, 2018-03-10 - 9 p. - Published in : Phys. Lett. B 778 (2018) 137-145 Article from SCOAP3: PDF; Draft (restricted): PDF; Fulltext: arXiv:1712.00297 - PDF; CERN-EP-2017-311 - PDF;
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5.
(71)
Search for lepton number and flavour violation in $K^+ $ and $\pi^0$ decays / NA62 Collaboration
Searches for the lepton number violating $K^+ \to \pi^− \mu^+ e^+$ decay and the lepton flavour violating $K^+ \to \pi^+ \mu^- e^+$ and $\pi^0 \to \mu^- e^+$ decays are reported using data collected by the NA62 experiment at CERN in 2017$-$2018. No evidence for these decays is found and upper limits of the branching ratios are obtained at 90% confidence level: B($K^+ \to \pi^− \mu^+ e^+$) $< 4.2 \times 10^{−11}$, B($K^+ \to \pi^+ \mu^- e^+$) $< 6.6 \times 10^{−11}$ and B($\pi^0 \to \mu^- e^+$) $< 3.2 \times 10^{−10}$. [...]
arXiv:2105.06759; CERN-EP-2021-090.- Geneva : CERN, 2021-09-24 - 8 p. - Published in : Phys. Rev. Lett. 127 (2021) 131802 Draft (restricted): PDF; Fulltext: 2105.06759 - PDF; CERN-EP-2021-090 - PDF; Publication - PDF; Fulltext from publisher: PDF;
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6.
(68)
First observation and study of the $K^{\pm} \to \pi^{\pm} \pi^{0} e^{+} e^{-}$ decay / NA48/2 Collaboration
The NA48/2 experiment at CERN reports the first observation of the $K^\pm \to \pi^\pm \pi^0 e^+ e^-$ decay from an exposure of $1.7 \times 10^{11}$ charged kaon decays recorded in $2003-2004$. A sample of 4919 candidates with 4.9% background contamination allows the determination of the branching ratio in the full kinematic region, BR($K^\pm \to \pi^\pm \pi^0 e^+ e^-)=(4.24 \pm 0.14)\times10^{-6}$. [...]
arXiv:1809.02873; CERN-EP-2018-246.- Geneva : CERN, 2019-01-10 - 10 p. - Published in : Phys. Lett. B 788 (2019) 552-561 Article from SCOAP3: PDF; Draft (restricted): PDF; Fulltext: CERN-EP-2018-246 - PDF; 1809.02873 - PDF;
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7.
(67)
First search for $K^+ \to \pi^+ \nu \bar\nu$ using the decay-in-flight technique / NA62 Collaboration
The NA62 experiment at the CERN SPS reports the first search for $K^+ \to \pi^+ \nu \bar{\nu}$ using the decay-in-flight technique, based on a sample of $1.21\times10^{11}$ $K^+$ decays collected in 2016. The single event sensitivity is $3.15 \times 10^{-10}$, corresponding to 0.267 Standard Model events. [...]
arXiv:1811.08508; CERN-EP-2018-314.- Geneva : CERN, 2019-04-10 - 11 p. - Published in : Phys. Lett. B 791 (2019) 156-166 Article from SCOAP3: PDF; Draft (restricted): PDF; Fulltext: 1811.08508 - PDF; CERN-EP-2018-314 - PDF;
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8.
(65)
A measurement of the $K^+ \to \pi^+ \mu^+ \mu^-$ decay / NA62 Collaboration
A sample of $2.8 \times 10^4$ $K^+ \to \pi^+ \mu^+ \mu^-$ candidates with negligible background was collected by the NA62 experiment at the CERN SPS in 2017-2018. The model-independent branching fraction is measured to be $(9.15 \pm 0.08) \times 10^{-8}$, a factor three more precise than previous measurements. [...]
arXiv:2209.05076; CERN-EP-2022-189.- Geneva : CERN, 2022-11-04 - 19 p.
Draft (restricted): PDF; Fulltext: CERN-EP-2022-189 - PDF; document - PDF; 2209.05076 - PDF; Publication - PDF;
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9.
(64)
Performance of the NA62 trigger system / NA62 Collaboration
The NA62 experiment at CERN targets the measurement of the ultra-rare $K^+ \to \pi^+ \nu \bar\nu$ decay, and carries out a broad physics programme that includes probes for symmetry violations and searches for exotic particles. Data were collected in 2016–2018 using a multi-level trigger system, which is described highlighting performance studies based on 2018 data..
arXiv:2208.00897; CERN-EP-2022-165.- Geneva : CERN, 2023-03-17 - 20 p. - Published in : JHEP 2303 (2023) 122 Draft (restricted): PDF; Fulltext: CERN-EP-2022-165 - PDF; document - PDF; 2208.00897 - PDF;
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10.
(59)
Measurement of the form factors of charged kaon semileptonic decays / NA48/2 Collaboration
A measurement of the form factors of charged kaon semileptonic decays is presented, based on $4.4 \times 10^{6}$ $K^\pm \to \pi^0 e^\pm \nu_e$ ($K^\pm_{e3}$) and $2.3 \times 10^{6}$ $K^\pm \to \pi^0 \mu^\pm \nu_\mu$ ($K^\pm_{\mu3}$) decays collected in 2004 by the NA48/2 experiment. The results are obtained with improved precision as compared to earlier measurements. [...]
arXiv:1808.09041; CERN-EP-2018-231.- Geneva : CERN, 2018-10-24 - 20 p. - Published in : JHEP 10 (2018) 150 Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Draft (restricted): PDF; Fulltext: fermilab-pub-18-701 - PDF; CERN-EP-2018-231 - PDF; 1808.09041 - PDF;
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