[PDF]
http://dx.doi.org/10.3952/lithjphys.49110
Open access article / Atviros prieigos straipsnis
Lith. J. Phys. 49, 19–28 (2009)
HEAVY HADRON SPECTROSCOPY AND
THE BAG MODEL
A. Bernotas and V. Šimonis
Vilnius University Institute of Theoretical Physics and
Astronomy, A. Goštauto 12, LT-01108 Vilnius, Lithuania
E-mail: bernotas@itpa.lt, simonis@itpa.lt
Received 29 December 2008; revised 14 March
2009; accepted 19 March 2009
Some time ago a slightly improved
variant of bag model (the modified bag model) suitable for the
unified description of light and heavy hadrons was developed. The
main goal of the present work was to calculate the masses of the
ground state baryons containing bottom quarks in the framework of
this model. For completeness the predictions for other heavy
hadrons are also given. The reasonable agreement of our results
with other theoretical calculations and available experimental
data suggests that our predictions could serve as a useful
complementary tool for the interpretation of heavy hadron spectra.
Keywords: bag model, heavy quarks, heavy
baryons, hadron spectra
PACS: 12.39.Ba, 14.20.Lq, 14.20.Mr, 14.40.Lb, 14.40.Nd
SUNKIŲJŲ BARIONŲ SPEKTROSKOPIJA
IR MAIŠŲ MODELIS
A. Bernotas, V. Šimonis
Vilniaus universiteto Teorinės fizikos ir astronomijos
institutas, Vilnius, Lietuva
Taikant modifikuotą MIT maišų modelį,
apskaičiuotos sunkiųjų hadronų, į kurių sudėtį įeina „sunkūs“ c
ir b kvarkai, pagrindinių būsenų masės. Gautos darbe masių
vertės palygintos su kitų autorių įvairiuose modeliuose atliktų
skaičiavimų rezultatais bei turimais naujausiais eksperimentų
duomenimis. Daugeliu atvejų sutapimas su eksperimentu bei kitais
skaičiavimais yra neblogas. Taip pat nurodyti kai kurie modelio
trūkumai, aptarti privalumai bei modelio vieta teorinėje hadronų
spektroskopijoje.
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