Horsley, R. ; Najjar, J. ; Nakamura, Y. ; Perlt, H. ; Pleiter, D. ; Rakow, P. E. L. ; Schierholz, G. ; Schiller, A. ; Stüben, H. ; Zanotti, J. M. 
Alternative Links zum Volltext:DOIVerlag
| Dokumentenart: | Artikel |
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| Titel eines Journals oder einer Zeitschrift: | Physical Review D |
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| Verlag: | AMER PHYSICAL SOC |
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| Ort der Veröffentlichung: | COLLEGE PK |
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| Band: | 91 |
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| Nummer des Zeitschriftenheftes oder des Kapitels: | 7 |
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| Datum: | 2015 |
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| Institutionen: | Physik > Institut für Theoretische Physik |
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| Identifikationsnummer: | | Wert | Typ |
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| 10.1103/PhysRevD.91.074512 | DOI |
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| Stichwörter / Keywords: | QUARK MASSES; QCD; |
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| Dewey-Dezimal-Klassifikation: | 500 Naturwissenschaften und Mathematik > 530 Physik |
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| Status: | Veröffentlicht |
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| Begutachtet: | Ja, diese Version wurde begutachtet |
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| An der Universität Regensburg entstanden: | Ja |
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| Dokumenten-ID: | 60502 |
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Zusammenfassung
Isospin breaking effects in baryon octet (and decuplet) masses are due to a combination of up and down quark mass differences and electromagnetic effects and lead to small mass splittings. Between the Sigma and Lambda this mass splitting is much larger, this being mostly due to their different wave functions. However when isospin is broken, there is a mixing between these states. We describe the ...
Zusammenfassung
Isospin breaking effects in baryon octet (and decuplet) masses are due to a combination of up and down quark mass differences and electromagnetic effects and lead to small mass splittings. Between the Sigma and Lambda this mass splitting is much larger, this being mostly due to their different wave functions. However when isospin is broken, there is a mixing between these states. We describe the formalism necessary to determine the QCD mixing matrix and hence find the mixing angle and mass splitting between the Sigma and Lambda particles due to QCD effects.
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