Estimation of ground state pentaquark masses
نویسندگان
چکیده
منابع مشابه
Pentaquark masses: another look
We refine theoretical estimates of the masses of the Θ and other pentaquark states. For the Karliner-Lipkin model, it is noted that for the qqq̄ triquark, proper incorporation of the colour-spin SU(6) symmetry has not been made in the literature. We address this lacuna, make a small generalization in the hyperfine interaction couplings used hitherto, and incorprate flavour symmetry breaking. Aft...
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The pentaquark state of Θ+(uudds) has been observed to decay with two decay modes: Θ+ → nK+ and Θ+ → pK0. The decay probability ratio of the two decay modes is studied with general symmetry consideration of isospin, spin, and parity. We arrive at a result of the ratio Γ(Θ →nK) Γ(Θ+→pK0) = (α−β) 2 (α+β)2 (1 k2 )2L+1, which is valid for the Θ+ state to be a pure isoscalar or isovector state, or a...
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ژورنال
عنوان ژورنال: International Journal of Modern Physics: Conference Series
سال: 2014
ISSN: 2010-1945,2010-1945
DOI: 10.1142/s2010194514602518