Naslov
Anticrossing in the η-η′ complex

Autori
Klabučar, Dubravko

Izvornik
Physics of particles and nuclei (1063-7796) 39 (2008), 7; 1186-1186

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, kratko priopcenje, stručni

Ključne riječi
Anticrossing eta eta' mesons Dyson-Schwinger

Sažetak
The Dyson-Schwinger approach to mesons as quark–antiquark bound states produces a very satisfactory description of the whole light pseudoscalar nonet, both at zero and at finite temperatures [1]. Especially interesting is the temperature behavior of the η–η' complex, where results for masses differ very greatly for various possible relationships between the chiral restoration temperature and the temperature of melting of the topological susceptibility χ. Namely, χ is connected with the quantity β in the η–η' mass matrix as χ = β(2 +X2) /6, where X = fπ/ . For example, in certain regimes, the “mass” of ηNS, namely M_ηNS, for some temperatures becomes larger than M_ηS, the “mass” of ηS [1] ; that is, M_ηNS and M_ηNS can cross.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

Napomena
Part 4. Problems and Solutions

POVEZANOST RADA