Possible hadronic molecule structure of the Y(3940) and Y(4140)

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 J^PC =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 J^PC = 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	https://doi.org/10.1063/1.3483365
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

Keywords

Charm mesons
Hadronic molecule
Strong and radiative decay

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1063/1.3483365

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title = "Possible hadronic molecule structure of the Y(3940) and Y(4140)",

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.",

keywords = "Charm mesons, Hadronic molecule, Strong and radiative decay",

author = "Tanja Branz and Thomas Gutsche and Lyubovitskij, {Valery E.}",

year = "2010",

doi = "10.1063/1.3483365",

language = "English",

isbn = "9780735408074",

volume = "1257",

pages = "432--436",

booktitle = "Hadron 2009 - Proceedings of the XIII International Conference on Hadron Spectroscopy",

note = "13th International Conference on Hadron Spectroscopy, Hadron 2009 ; Conference date: 29-11-2009 Through 04-12-2009",

}

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

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U2 - 10.1063/1.3483365

DO - 10.1063/1.3483365

M3 - Conference contribution

AN - SCOPUS:77956685949

SN - 9780735408074

VL - 1257

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EP - 436

BT - Hadron 2009 - Proceedings of the XIII International Conference on Hadron Spectroscopy

T2 - 13th International Conference on Hadron Spectroscopy, Hadron 2009

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