First pi K atom lifetime and pi K scattering length measurements

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F14%3A00433030" target="_blank" >RIV/68378271:_____/14:00433030 - isvavai.cz</a>
Alternative codes found
RIV/61389005:_____/14:00433030 RIV/68407700:21340/14:00224967
Result on the web
<a href="http://dx.doi.org/10.1016/j.physletb.2014.06.043" target="_blank" >http://dx.doi.org/10.1016/j.physletb.2014.06.043</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.physletb.2014.06.043" target="_blank" >10.1016/j.physletb.2014.06.043</a>

Result language
angličtina
Original language name
First pi K atom lifetime and pi K scattering length measurements
Original language description
The results of a search for hydrogen-like atoms consisting of pi K--/+(+/-) mesons are presented. Evidence for pi K atom production by 24 GeV/c protons from CERN PS interacting with a nickel target has been seen in terms of characteristic pi K pairs fromtheir breakup in the same target (178 +/- 49) as well as in terms of produced pi K atoms (653 +/- 42). Using these results, the analysis yields a first value for the pi K atom lifetime of tau = (2.5(-1.8)(+3.0)) fsand a first measurement of the S-wave isospin-odd pi K scattering length vertical bar a(0)(-)vertical bar = 1/3 vertical bar a(1/2) - a(3/2)vertical bar = (0.11(-0.04)(+0.09))M-pi(-1) (a(I) for isospin I).
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BE - Theoretical physics
OECD FORD branch
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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