First πK atom lifetime and πK scattering length measurements
| Data(s) |
2014
|
|---|---|
| Resumo |
The results of a search for hydrogen-like atoms consisting of π∓K±π∓K± mesons are presented. Evidence for πK atom production by 24 GeV/c protons from CERN PS interacting with a nickel target has been seen in terms of characteristic πK pairs from their breakup in the same target (178±49178±49) as well as in terms of produced πK atoms (653±42653±42). Using these results, the analysis yields a first value for the πK atom lifetime of View the MathML sourceτ=(2.5−1.8+3.0) fs and a first measurement of the S-wave isospin-odd πK scattering length View the MathML source|a0−|=13|a1/2−a3/2|=(0.11−0.04+0.09)Mπ−1 (aIaI for isospin I). |
| Formato |
application/pdf |
| Identificador |
http://boris.unibe.ch/68651/1/1-s2.0-S0370269314004481-main.pdf Amsler, Claude; Schacher, Jürg (2014). First πK atom lifetime and πK scattering length measurements. Physics letters. B, 735, pp. 288-294. Elsevier 10.1016/j.physletb.2014.06.043 <http://dx.doi.org/10.1016/j.physletb.2014.06.043> doi:10.7892/boris.68651 info:doi:10.1016/j.physletb.2014.06.043 urn:issn:0370-2693 |
| Idioma(s) |
eng |
| Publicador |
Elsevier |
| Relação |
http://boris.unibe.ch/68651/ |
| Direitos |
info:eu-repo/semantics/openAccess |
| Fonte |
Amsler, Claude; Schacher, Jürg (2014). First πK atom lifetime and πK scattering length measurements. Physics letters. B, 735, pp. 288-294. Elsevier 10.1016/j.physletb.2014.06.043 <http://dx.doi.org/10.1016/j.physletb.2014.06.043> |
| Palavras-Chave | #530 Physics |
| Tipo |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion NonPeerReviewed |
