TY  - JOUR
TI  - Mixing angles between the tetraquark states with two heavy
quarks within QCDsum rules
AB  - : LHCb collaboration has recently announced the observation of a doubly charmed tetraquark T
+
ccu¯d¯
state with spin parity J
P = 1+ . This exotic state can be explained as a molecular state with small binding
energy. According to conventional quark model, both D+D0∗ and (D0D+∗
) multiquark states are expected
to have the same mass and flavor in the exact SU(3) symmetry. However, since the quark masses are
different, SU(3)(SU(2)) symmetry is violated; hence, the mass and flavor eigenstates do not coincide. The
mass eigenstates can be represented as a linear combination of the flavor eigenstates, which is characterized
by the mixing angle θ . In the present work, the possible mixing angles between the Tcc states are calculated.
Moreover, the analyses are extended for all the possible tetraquarks scenarios with two heavy and two light
quarks within the molecular picture although those states have not been observed yet. Our prediction on
mixing angle between doubly charmed tetraquark states shows that SU(3) symmetry breaking is around 7%
maximally
AU  - BİLMİŞ, Selçuk
DO  - 10.55730/1300-0101.1003
PY  - 2021
JO  - Turkish Journal of Physics
VL  - 45
IS  - 6
SN  - 1300-0101
SP  - 390
EP  - 399
DB  - TRDizin
UR  - http://search/yayin/detay/513682
ER  -