Measurement of the πk atom lifetime and the πk scattering length

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F17%3A00318928" target="_blank" >RIV/68407700:21340/17:00318928 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1103/PhysRevD.96.052002" target="_blank" >http://dx.doi.org/10.1103/PhysRevD.96.052002</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevD.96.052002" target="_blank" >10.1103/PhysRevD.96.052002</a>

Result language
angličtina
Original language name
Measurement of the πk atom lifetime and the πk scattering length
Original language description
After having announced the statistically significant observation (5.6s) of the new exotic pi K atom, the DIRAC experiment at the CERN proton synchrotron presents the measurement of the corresponding atom lifetime, based on the full pi K data sample: tau = (5.5(-2.8)(+5.0)) x 10(-15) s. By means of a precise relation (approximate to 1%) between atom lifetime and scattering length, the following value for the S-wave isospin-odd pi K scattering length a(0)(-) = 1/3 (a(1/2) - a(3/2)) has been derived: |a(0)(-)| = (0.072(-0.020)(+0.031)) M-pi(-1).
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10303 - Particles and field physics

Project
<a href="/en/project/LG15052" target="_blank" >LG15052: Investigation of the Microworld using the CERN Infrastructure</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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