A study of the K+^{+}→ π0^{0}e+^{+}νγ decay

Collaboration
Apr 24, 2023
16 pages
Published in:
  • JHEP 09 (2023) 040,
  • JHEP 09 (2023) 040
  • Published: Sep 7, 2023
e-Print:
Report number:
  • CERN-EP-2023-069
Experiments:

Citations per year

2022202320240511
Abstract: (Springer)
A sample of 1.3 × 105^{5}K+^{+} → π0^{0}e+^{+}νγ candidates with less than 1% background was collected by the NA62 experiment at the CERN SPS in 2017–2018. Branching fraction measurements are obtained at percent relative precision in three restricted kinematic regions, improving on existing results by a factor larger than two. An asymmetry, possibly related to T-violation, is investigated with no evidence observed within the achieved precision.
  • Branching fraction
  • Electroweak Interaction
  • Fixed Target Experiments
  • Flavour Physics
  • K+: secondary beam
  • K+: semileptonic decay
  • time reversal: violation
  • K+: branching ratio
  • asymmetry
  • NA62