[PDF]    http://dx.doi.org/10.3952/lithjphys.53202

Open access article / Atviros prieigos straipsnis

Lith. J. Phys. 53, 8498 (2013)


MAGNETIC MOMENTS OF HEAVY BARYONS IN THE BAG MODEL REEXAMINED
A. Bernotasa and V. Šimonisb
aFaculty of Physics, Vilnius University, Saulėtekio 9, LT-10222 Vilnius, Lithuania
bInstitute of Theoretical Physics and Astronomy, Vilnius University, A. Goštauto 12, LT-01108, Vilnius, Lithuania
E-mail: vytautas.simonis@tfai.vu.lt

Received 17 September 2012; accepted 20 June 2013

The magnetic moments of J = 1/2 and J = 3/2 heavy baryons are calculated in the bag model with center-of-mass motion corrections. For the spin 1/2 baryons containing three quarks of different flavours the effect of hyperfine mixing is examined in detail. The results of the work are compared with predictions obtained in various other approaches and models.
Keywords: bag model, magnetic moments, heavy baryons, state mixing
PACS: 12.39.Ba, 13.40.Em, 14.20.Lq, 14.20.Mr


SUNKIŲJŲ BARIONŲ MAGNETINIŲ MOMENTŲ SKAIČIAVIMAS
TAIKANT MODIFIKUOTĄ KVARKŲ MAIŠŲ MODELĮ

A. Bernotasa, V. Šimonisb
aVilniaus universiteto Fizikos fakultetas, Vilnius, Lietuva
bVilniaus universiteto Teorinės fizikos ir astronomijos institutas, Vilnius, Lietuva

Suskaičiuoti sunkiųjų barionų, kurių judėjimo kiekio momentai J = 1/2 ir J = 3/2, magnetiniai momentai. Naudotas kvarkų maišų modelis su masių centro judėjimo pataisomis. Tuo atveju, kai pusinio sukinio barionai yra sudaryti iš skirtingų aromatų kvarkų, būsenų maišymasis dėl hipersmulkiosios sąveikos išnagrinėtas smulkiau. Darbo rezultatai palyginami su įvertinimais, gautais naudojant kitus metodus ir modelius.


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