Abstract
In the present article we report on evidence for hadronic molecule structures in the charmonium sector. In particular we discuss the Y(3940) and the recently observed Y(4140) as heavy hadron molecule states with quantum numbers JPC =0++ or 2++. The Y(3940) state is considered to be a superposition of D*+D*- and D*0D*0, while the Y(4140) is a bound state of D s *+ and D s *- mesons. We give predictions for both the strong Y(3940) rarr; J/Ψω, Y(4140) → J/Ψφ and radiative Y(3940)/Y(4140)→γ γ decay widths in a phenomenological Lagrangian approach. The results for the strong hidden charm decay modes clearly support the molecular interpretation of the Y(3940) and Y(4140), while our estimates for the radiative decays provide a sensitive test for the underlying meson structure of the two Y mesons discussed here. The alternative assignment of JPC = 2++ is also tested, giving similar results for the strong decay widths.
| Original language | English |
|---|---|
| Title of host publication | Hadron 2009 - Proceedings of the XIII International Conference on Hadron Spectroscopy |
| Pages | 432-436 |
| Number of pages | 5 |
| Volume | 1257 |
| DOIs | |
| Publication status | Published - 2010 |
| Externally published | Yes |
| Event | 13th International Conference on Hadron Spectroscopy, Hadron 2009 - Tallahassee, FL, United States Duration: 29 Nov 2009 → 4 Dec 2009 |
Conference
| Conference | 13th International Conference on Hadron Spectroscopy, Hadron 2009 |
|---|---|
| Country | United States |
| City | Tallahassee, FL |
| Period | 29.11.09 → 4.12.09 |
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Keywords
- Charm mesons
- Hadronic molecule
- Strong and radiative decay
ASJC Scopus subject areas
- Physics and Astronomy(all)
Cite this
Possible hadronic molecule structure of the Y(3940) and Y(4140). / Branz, Tanja; Gutsche, Thomas; Lyubovitskij, Valery E.
Hadron 2009 - Proceedings of the XIII International Conference on Hadron Spectroscopy. Vol. 1257 2010. p. 432-436.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Possible hadronic molecule structure of the Y(3940) and Y(4140)
AU - Branz, Tanja
AU - Gutsche, Thomas
AU - Lyubovitskij, Valery E.
PY - 2010
Y1 - 2010
N2 - In the present article we report on evidence for hadronic molecule structures in the charmonium sector. In particular we discuss the Y(3940) and the recently observed Y(4140) as heavy hadron molecule states with quantum numbers JPC =0++ or 2++. The Y(3940) state is considered to be a superposition of D*+D*- and D*0D*0, while the Y(4140) is a bound state of D s *+ and D s *- mesons. We give predictions for both the strong Y(3940) rarr; J/Ψω, Y(4140) → J/Ψφ and radiative Y(3940)/Y(4140)→γ γ decay widths in a phenomenological Lagrangian approach. The results for the strong hidden charm decay modes clearly support the molecular interpretation of the Y(3940) and Y(4140), while our estimates for the radiative decays provide a sensitive test for the underlying meson structure of the two Y mesons discussed here. The alternative assignment of JPC = 2++ is also tested, giving similar results for the strong decay widths.
AB - In the present article we report on evidence for hadronic molecule structures in the charmonium sector. In particular we discuss the Y(3940) and the recently observed Y(4140) as heavy hadron molecule states with quantum numbers JPC =0++ or 2++. The Y(3940) state is considered to be a superposition of D*+D*- and D*0D*0, while the Y(4140) is a bound state of D s *+ and D s *- mesons. We give predictions for both the strong Y(3940) rarr; J/Ψω, Y(4140) → J/Ψφ and radiative Y(3940)/Y(4140)→γ γ decay widths in a phenomenological Lagrangian approach. The results for the strong hidden charm decay modes clearly support the molecular interpretation of the Y(3940) and Y(4140), while our estimates for the radiative decays provide a sensitive test for the underlying meson structure of the two Y mesons discussed here. The alternative assignment of JPC = 2++ is also tested, giving similar results for the strong decay widths.
KW - Charm mesons
KW - Hadronic molecule
KW - Strong and radiative decay
UR - http://www.scopus.com/inward/record.url?scp=77956685949&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77956685949&partnerID=8YFLogxK
U2 - 10.1063/1.3483365
DO - 10.1063/1.3483365
M3 - Conference contribution
SN - 9780735408074
VL - 1257
SP - 432
EP - 436
BT - Hadron 2009 - Proceedings of the XIII International Conference on Hadron Spectroscopy
ER -