Contribution to a conference proceedings/Internal Report

PUBDB-2015-05377

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Detailed study of the $K_{e4}$ decay mode properties from the NA48/2 experiment at CERN

Cenci, P. ; NA48/2 Collaboration (Collaboration Author)

2014
Deutsches Elektronen-Synchrotron, DESY Hamburg

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Please use a persistent id in citations: doi:10.3204/DESY-PROC-2014-04/17

Report No.: DESY-PROC-2014-04

Abstract: The NA48/2 Collaboration at CERN has accumulated an unprecedented statistics of rare semileptonic four-body $K_{e4}$ decay modes $K^{\pm}\rightarrow\pi^+\pi^-e\nu$ and $K^{\pm}\rightarrow\pi^0\pi^0e\nu$, with nearly 1$\%$ background contamination. Final results from the analyses of the full $K_{e4}$ data samples are described. The most accurate measurements to date of form factors and branching ratios have been achieved by NA48/2, bringing new inputs to low energy QCD description and stringent tests of predictions from Chiral Perturbation Theory and Lattice QCD.

Keyword(s): perturbation theory: chiral ; energy: low ; NA48 ; decay modes ; CERN Lab ; quantum chromodynamics ; lattice field theory ; branching ratio ; form factor ; statistics ; background

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Contributing Institute(s):

1. LHC/ATLAS Experiment (ATLAS)
2. LHC/CMS Experiment (CMS)
3. Uni Hamburg / Experimentalphysik (UNI/EXP)

Research Program(s):

1. 611 - Fundamental Particles and Forces (POF3-611) (POF3-611)

Experiment(s):

1. No specific instrument

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Database coverage:

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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Book/Proceedings/Internal Report Schmidt, A. (Editor)>Extern* ; Sander, C. (Editor)DESY*
Proceedings, 20th International Conference on Particles and Nuclei (PANIC 14)
2014Panic2014, Panic2014, HamburgHamburg, Germany, 25 Aug 2014 - 29 Aug 20142014-08-252014-08-29 Hamburg : Deutsches Elektronen-Synchrotron, DESY 1-754 (2014) [10.3204/DESY-PROC-2014-04]2014     Files  Fulltext BibTeX | EndNote: XML, Text | RIS

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