Pentaquarks and strange tetraquark mesons
نویسندگان
چکیده
منابع مشابه
Tetraquark mesons in large-N quantum chromodynamics.
It is argued that exotic mesons consisting of two quarks and two antiquarks are not ruled out in quantum chromodynamics with a large number N of colors, as generally thought. Tetraquarks of one class are typically long-lived, with decay rates proportional to 1/N.
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The properties of pentaquarks containing a heavy anti-quark and strange quarks are studied in the bound state picture. In the avor SU(3) limit, there are many pentaquark states with the same binding energy. When the SU(3) symmetry breaking e ects are included, however, three states become particularly stable due to a \Gell-Mann{Okubo mechanism". They are the Qsuud and Qsudd states discussed by ...
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The properties of pentaquarks containing a heavy anti-quark and strange quarks are studied in the bound state picture. In the flavor SU(3) limit, there are many pentaquark states with the same binding energy. When the SU(3) symmetry breaking effects are included, however, three states become particularly stable due to a “Gell-Mann–Okubo mechanism”. They are the Q̄suud and Q̄sudd states discussed ...
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ژورنال
عنوان ژورنال: Modern Physics Letters A
سال: 2015
ISSN: 0217-7323,1793-6632
DOI: 10.1142/s0217732315502120