The NA48 experiment at CERN was designed to measure direct CP violation in the neutral kaon syste... more The NA48 experiment at CERN was designed to measure direct CP violation in the neutral kaon system. Besides its main goal, the availability of an intense neutral beam and a high-performance detector allow other physics studies to be carried out, mainly concerning rare K0 and hyperon decays. The collaboration has recently obtained a new measurement [1] of Re(ε′/ε), based on the analysis of all the data collected so far, while several results on rare K0 decays have been published and are under study.
The rare decay K+→ π+vv is an excellent process to make tests of new physics at the highest scale... more The rare decay K+→ π+vv is an excellent process to make tests of new physics at the highest scale complementary to LHC thanks to its theoretical cleanness. The NA62 experiment at CERN SPS aims to collect of the order of 100 events in two years of data taking, keeping the background at the level of 10%. Part of the experimental apparatus has been commissioned during a technical run in 2012. The physics prospects and the status of the experiment are reviewed in light of the pilot run which occurred in October-December 201
The L0TP+ initiative is aimed at the upgrade of the FPGA-based Level-0 Trigger Processor (L0TP) o... more The L0TP+ initiative is aimed at the upgrade of the FPGA-based Level-0 Trigger Processor (L0TP) of the NA62 experiment at CERN for the post-LS2 data taking, which is expected to happen at 100% of design beam intensity, corresponding to about 3.3 × 1012 protons per pulse on the beryllium target used to produce the kaons beam. Although tests performed at the end of 2018 showed a substantial robustness of the L0TP system also at full beam intensity, there are several reasons to motivate such an upgrade: i) avoid FPGA platform obsolescence, ii) make room for improvements in the firmware design leveraging a more capable FPGA device, iii) add new functionalities, iv) support the 4 beam intensity increase foreseen in future experiment upgrades. We singled out the Xilinx Virtex UltraScale+ VCU118 development board as the ideal platform for the project. L0TP+ seamless integration into the current NA62 TDAQ system and exact matching of L0TP functionalities represent the main requirements and ...
The K_S -> gammagamma decay rate has been measured with the NA48 detector using a high intensi... more The K_S -> gammagamma decay rate has been measured with the NA48 detector using a high intensity short neutral beam from the CERN SPS. The measured branching ratio BR(K_S) -> gammagamma = (2.78 +- 0.06_{stat} +- 0.04_{syst}) x 10^{-6}, obtained from 7461 +- 172 K_S -> gammagamma events, is significantly higher than the O(p^4) prediction of Chiral Perturbation Theory. Using
CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): Abstract The NA48/2 ... more CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): Abstract The NA48/2 experiment at the CERN SPS collected an unprecedented statistics of charged Kaon decays with a unique double-beam technique, which allows high control of systematics, with ...
This paper summarizes some recent progress and future perspectives in the experimental investigat... more This paper summarizes some recent progress and future perspectives in the experimental investigation of the Standard Model (and physics beyond it) using charged kaon decays, except for the important mode K+ -> pi+ nu nubar discussed in detail in other contributions to this workshop.
The NA48 experiment at CERN was designed to measure direct CP violation in the neutral kaon syste... more The NA48 experiment at CERN was designed to measure direct CP violation in the neutral kaon system. Besides its main goal, the availability of an intense neutral beam and a high-performance detector allow other physics studies to be carried out, mainly concerning rare K0 and hyperon decays. The collaboration has recently obtained a new measurement [1] of Re(ε′/ε), based on the analysis of all the data collected so far, while several results on rare K0 decays have been published and are under study.
The rare decay K+→ π+vv is an excellent process to make tests of new physics at the highest scale... more The rare decay K+→ π+vv is an excellent process to make tests of new physics at the highest scale complementary to LHC thanks to its theoretical cleanness. The NA62 experiment at CERN SPS aims to collect of the order of 100 events in two years of data taking, keeping the background at the level of 10%. Part of the experimental apparatus has been commissioned during a technical run in 2012. The physics prospects and the status of the experiment are reviewed in light of the pilot run which occurred in October-December 201
The L0TP+ initiative is aimed at the upgrade of the FPGA-based Level-0 Trigger Processor (L0TP) o... more The L0TP+ initiative is aimed at the upgrade of the FPGA-based Level-0 Trigger Processor (L0TP) of the NA62 experiment at CERN for the post-LS2 data taking, which is expected to happen at 100% of design beam intensity, corresponding to about 3.3 × 1012 protons per pulse on the beryllium target used to produce the kaons beam. Although tests performed at the end of 2018 showed a substantial robustness of the L0TP system also at full beam intensity, there are several reasons to motivate such an upgrade: i) avoid FPGA platform obsolescence, ii) make room for improvements in the firmware design leveraging a more capable FPGA device, iii) add new functionalities, iv) support the 4 beam intensity increase foreseen in future experiment upgrades. We singled out the Xilinx Virtex UltraScale+ VCU118 development board as the ideal platform for the project. L0TP+ seamless integration into the current NA62 TDAQ system and exact matching of L0TP functionalities represent the main requirements and ...
The K_S -> gammagamma decay rate has been measured with the NA48 detector using a high intensi... more The K_S -> gammagamma decay rate has been measured with the NA48 detector using a high intensity short neutral beam from the CERN SPS. The measured branching ratio BR(K_S) -> gammagamma = (2.78 +- 0.06_{stat} +- 0.04_{syst}) x 10^{-6}, obtained from 7461 +- 172 K_S -> gammagamma events, is significantly higher than the O(p^4) prediction of Chiral Perturbation Theory. Using
CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): Abstract The NA48/2 ... more CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): Abstract The NA48/2 experiment at the CERN SPS collected an unprecedented statistics of charged Kaon decays with a unique double-beam technique, which allows high control of systematics, with ...
This paper summarizes some recent progress and future perspectives in the experimental investigat... more This paper summarizes some recent progress and future perspectives in the experimental investigation of the Standard Model (and physics beyond it) using charged kaon decays, except for the important mode K+ -> pi+ nu nubar discussed in detail in other contributions to this workshop.
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