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Measurement of K-mu 3(0) form factors

Abstract:

This Letter reports on a new high precision measurement of the form factors of the KL → π± μ∓ νμ decay. The data sample of about 2.3 × 106 events was recorded in 1999 by the NA48 experiment at CERN. Studying the Dalitz plot density we measured a linear, λ+′ = (20.5 ± 2.2stat ± 2.4syst) × 10-3, and a quadratic, λ+″ = (2.6 ± 0.9stat ± 1.0syst) × 10-3 term in the power expansion of the vector form factor. No evidence was found for a second order term for the scalar form factor; the linear slope ...

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Publication status:
Published

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Journal:
PHYSICS LETTERS B
Volume:
647
Issue:
5-6
Pages:
341-350
Publication date:
2007-04-19
DOI:
ISSN:
0370-2693
URN:
uuid:4a41af2f-f5c2-44aa-8d9f-ca8c8c58e4ab
Source identifiers:
11874
Local pid:
pubs:11874
Language:
English
Keywords:

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