X(3872), I-G(J(PC))=0(+)(1(++)), as the chi(c1)(2P) charmonium

作者：Achasov N N^*; Rogozina E V

来源：Modern Physics Letters A, 2015, 30(33): 1550181.

DOI：10.1142/S0217732315501813

• Charmonium
• molecule
• two-gluon decays

Contrary to almost standard opinion that the X(3872) resonance is the D*(0)(D) over bar (0) + c.c. molecule or the qc (q) over bar(c) over bar four-quark state, we discuss the scenario where the X(3872) resonance is the c (c) over bar = chi c1(2P) charmonium which "sits on" the D*(0)(D) over bar (0) threshold.
We explain the shift of the mass of the X(3872) resonance with respect to the prediction of a potential model for the mass of the chi c1(2P) charmonium by the contribution of the virtual D*(D) over bar + c.c. intermediate states into the self energy of the X(3872) resonance. This allows us to estimate the coupling constant of the X(7872) resonance with the D*(0)(D) over bar (0) channel, the branching ratio of the X(3872). D*(0)(D) over bar (0) + c.c. decay, and the branching ratio of the X(3872) decay into all non-D*(0)(D) over bar (0) + c.c. states.
We predict a significant number of unknown decays of X(3872) via two gluon: X(3872). gluon gluon. hadrons. We suggest a physically clear program of experimental researches for verification of our assumption.

• 出版日期2015-10-30