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Precision measurement of the K sub( )Smeson lifetime with the KLOE detector
Using a large sample of pure, slow, short lived K super(0) mesons collected with KLOE detector at DA Phi NE, we have measured the K sub( )Slifetime. From a fit to the proper time distribution we find tau (K sub( )S=(89.562 plus or minus 0.029 sub(stat) plus or minus 0.043 sub(syst)) ps. This is the...
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Published in: | The European physical journal. C, Particles and fields Particles and fields, 2011-03, Vol.71 (3), p.1-6 |
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Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Online Access: | Get full text |
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Summary: | Using a large sample of pure, slow, short lived K super(0) mesons collected with KLOE detector at DA Phi NE, we have measured the K sub( )Slifetime. From a fit to the proper time distribution we find tau (K sub( )S=(89.562 plus or minus 0.029 sub(stat) plus or minus 0.043 sub(syst)) ps. This is the most precise measurement to date of the short lived K super(0) meson lifetime, in good agreement with the world average derived from previous measurements. We observe no dependence of the lifetime on the direction of the K sub( )Sin galactic coordinates. |
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ISSN: | 1434-6044 1434-6052 |
DOI: | 10.1140/epjc/s10052-011-1604-7 |