469908
Performance of the Totem Detectors at the LHC
The TOTEM Experiment is designed to measure the total proton–proton cross-section with the luminosity-independent method and to study elastic and diffractive pp scattering at the LHC. To achieve optimum forward coverage for charged particles emitted by the pp collisions in the interaction point IP5, two tracking telescopes, T1 and T2, are installed on each side of the IP in the pseudorapidity region 3.1≤|η|≤6.5, and special movable beam-pipe insertions — called Roman Pots (RP) — are placed at distances of ±147 m and ±220 m from IP5. This article describes in detail the working of the TOTEM detector to produce physics results in the first three years of operation and data taking at the LHC.
114800615
The TOTEM Roman Pot Detector System at the LHC: Status, Operation and Performance
117455561
New physics limits from kaon decays
Searches for lepton flavour violation and lepton number violation in kaon decays by the NA62 and NA48/2 experiments at CERN are presented. A new measurement of the ratio of charged kaon leptonic decay rates $R_K=\Gamma(K_{e2})/\Gamma(K_{\mu2})$ to sub-percent relative precision is discussed. An improved upper limit on the lepton number violating $K^\pm\rightarrow\pi^\mp\mu^\pm\mu^\pm$ decay rate is also reported. The future 10% precision measurement of the branching ratio of the ultra-rare kaon decay $K^+\rightarrow\pi^+\nu\bar{\nu}$ with the NA62 experiment is finally reviewed.
120424159
The NA62 Experiment at CERN
The NA62 experiment, which aims to measure the branching ratio of the very rare kaon decay K + → π + ν ν ¯ at the CERN SPS, is described. The proposed experiment aims to collect some 100 K + → π + ν ν ¯ events with a 10% of background. The status and the future perspectives for the experiment are discussed.
103455858
The NA62 Experiment: Prospects for the $K^+ \to \pi^+ \nu \bar\nu$ Measurement
122483903
Pion-Muon separation with a RICH prototype for the NA62 experiment
Abstract The NA62 experiment at CERN, aimed to measure K + → π + ν ν ¯ branching fraction (O(10 −10 )), relies on a Neon based RICH detector for π / μ separation, time measurement and level 0 trigger. The experimental requirements for this detector are: a muon contamination in pion samples lower than 5×10 −3 in the momentum range 15–35 GeV/ c and a time resolution on the charged track better than 100 ps. A prototype of such a detector was built and tested in 2009; it consists of a full length ( ≈ 18 m ) Ne filled vessel equipped with a spherical mirror and 414 PMs on its focal plane, located about 17 m upstream of the mirror. This prototype was tested at CERN SPS on a positive hadron beam, in the required momentum range, to measure the π / μ separation and to confirm the time resolution obtained with a previous prototype; the μ misidentification probability is about 0.7% and the time resolution is better than 100 ps in the whole momentum range.
117703483
$R_K$ and $K^+\rightarrow\pi^+\nu\bar{\nu} with NA62 at CERN SPS
Recent results a future prospects of the NA62 experiment at CERN SPS are presented. The NA62 experiment performed the most precise measurement of the ratio $R_K$ of the $K^+\rightarrow e^\pm\nu$ and K^+\rightarrow \mu^\pm\nu$ decay rates using the full data set collected in 2007. The result is in agreement with the Standard Model expectation. The ultra-rare decay $K^+\rightarrow\pi^+\nu\bar{\nu}$ is an excellent processes to make tests of new physics at the highest scale complementary to the LHC thanks to their theoretically cleanness. The NA62 experiment at CERN SPS aims to collect of the order of 100 $K^+\rightarrow\pi^+\nu\bar{\nu}$ events in two years of data taking, keeping the background at the level of 10%.