Abstract
We report on further evidence that the Y(3940) and the recently observed Y(4140) are heavy hadron molecule states with quantum numbers JPC=0++. The Y(3940) state is considered to be a superposition of D*+D*- and D*0D*0̄, while the Y(4140) is a bound state of Ds*+ and Ds*- mesons. For the first time we give predictions for the strong Y(3940)→J/ψω, Y(4140)→J/ψ φ and radiative Y(3940)/Y(4140)→γγ decay widths in a phenomenological Lagrangian approach. Results for the strong J/ψV (V=ω, φ) decays clearly support the molecular interpretation of the Y(3940) and Y(4140). The alternative assignment of JPC=2++ is also tested, giving similar results for the strong decay widths.
| Original language | English |
|---|---|
| Article number | 054019 |
| Journal | Physical Review D - Particles, Fields, Gravitation and Cosmology |
| Volume | 80 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 21 Sep 2009 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Nuclear and High Energy Physics
Cite this
Hadronic molecule structure of the Y(3940) and Y(4140). / Branz, Tanja; Gutsche, Thomas; Lyubovitskij, Valery E.
In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 80, No. 5, 054019, 21.09.2009.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Hadronic molecule structure of the Y(3940) and Y(4140)
AU - Branz, Tanja
AU - Gutsche, Thomas
AU - Lyubovitskij, Valery E.
PY - 2009/9/21
Y1 - 2009/9/21
N2 - We report on further evidence that the Y(3940) and the recently observed Y(4140) are heavy hadron molecule states with quantum numbers JPC=0++. The Y(3940) state is considered to be a superposition of D*+D*- and D*0D*0̄, while the Y(4140) is a bound state of Ds*+ and Ds*- mesons. For the first time we give predictions for the strong Y(3940)→J/ψω, Y(4140)→J/ψ φ and radiative Y(3940)/Y(4140)→γγ decay widths in a phenomenological Lagrangian approach. Results for the strong J/ψV (V=ω, φ) decays clearly support the molecular interpretation of the Y(3940) and Y(4140). The alternative assignment of JPC=2++ is also tested, giving similar results for the strong decay widths.
AB - We report on further evidence that the Y(3940) and the recently observed Y(4140) are heavy hadron molecule states with quantum numbers JPC=0++. The Y(3940) state is considered to be a superposition of D*+D*- and D*0D*0̄, while the Y(4140) is a bound state of Ds*+ and Ds*- mesons. For the first time we give predictions for the strong Y(3940)→J/ψω, Y(4140)→J/ψ φ and radiative Y(3940)/Y(4140)→γγ decay widths in a phenomenological Lagrangian approach. Results for the strong J/ψV (V=ω, φ) decays clearly support the molecular interpretation of the Y(3940) and Y(4140). The alternative assignment of JPC=2++ is also tested, giving similar results for the strong decay widths.
UR - http://www.scopus.com/inward/record.url?scp=70349778861&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=70349778861&partnerID=8YFLogxK
U2 - 10.1103/PhysRevD.80.054019
DO - 10.1103/PhysRevD.80.054019
M3 - Article
VL - 80
JO - Physical review D: Particles and fields
JF - Physical review D: Particles and fields
SN - 1550-7998
IS - 5
M1 - 054019
ER -