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The 8th International Workshop on Chiral Dynamics 2015

29 June 2015 to 3 July 2015
Pisa
Europe/Rome timezone

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Session

Parallel Session 1 - Goldstone Boson WG

29 Jun 2015, 14:30
Building E, Polo Fibonacci (Pisa)

Building E, Polo Fibonacci

Pisa

Via Buonarroti 2

Conveners

Parallel Session 1 - Goldstone Boson WG

  • Mario Antonelli (LNF)
  • Sebastien Descotes-Genon (CNRS/Univ. Paris-Sud 11)
  • Andreas Juettner (University of Southampton)
  • Emilie Passemar (Indiana University/JLab)

Presentation materials

There are no materials yet.

  1. 112. *Leading talk* K->pipi decays and the Delta I = 1/2 rule
    Nicolas Garron (Plymouth University)
    29/06/2015, 14:30
    Goldstone Boson Working Group
    Talk
    CP violation was discovered in Kaon decays 50 years ago but still remains a challenge for theorists. A complete theoretical description will be a crucial test for the Standard Model and will provide us with a rich source of information on new physics theories. In the past recent years, realistic computations of A2, the amplitude of K->(pipi)_(I=2), have become possible and reached a level of...
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  2. 58. Studies of the decay K+ to pi+ pi0 e+ e- at NA48
    Jacopo Pinzino (INFN-Pisa)
    29/06/2015, 15:00
    Goldstone Boson Working Group
    Talk
    We report the first observation of the very rare decay K+- -> pi+- pi0 e+ e- by the NA48/2 experiment. From a clean sample of almost 2000 reconstructed signal events, we have determined the branching fraction with high precision and measured the e+ e- invariant mass distribution, which allows to differentiate between different decay models.
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  3. 59. Studies of the Ke4 decay at NA48
    Michal Zamkovsky (IPNP, Charles University, Prague)
    29/06/2015, 15:20
    Goldstone Boson Working Group
    Talk
    The NA48/2 experiment has recently published a detailed study of the Ke4 decay mode K —> pi0 pi0 e nu based on 65000 candidates with a low 1% background contamination. The achieved experimental precision brings evidence for isospin breaking mass effects and final state pi pi scattering. Theoretical calculations will have to face a new precision challenge when using such improved inputs to...
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  4. 105. Isospin breaking effects in the K^+_{e4} decays
    Marc Knecht (CNRS/CPT, Marseille)
    29/06/2015, 15:40
    Goldstone Boson Working Group
    Talk
    The very precise data obtained by the NA48/2 collaboration at the CERN SPS on the decay channels K^\pm \to \pi^+ \pi^- e^\pm \stackrel{_{(-)}}{\nu_e}$ and $K^\pm \to \pi^0 \pi^0 e^\pm \stackrel{_{(-)}}{\nu_e}$ have made it necessary to address issues related to isospin breaking. Three aspects related to this issue will be considered: isospin breaking due to the pion mass difference in the...
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