Possible molecular structure of the newly observed Y(4260) - INSPIRE

DataBETA

Possible molecular structure of the newly observed Y(4260)

Jul, 2005

5 pages

Published in:

Phys.Rev.D 72 (2005) 054023

e-Print:

hep-ph/0507177 [hep-ph]

DOI:

10.1103/PhysRevD.72.054023

View in:

ADS Abstract Service

reference search114 citations

Citations per year

Abstract: (arXiv)

We suggest that the newly observed resonance Y(4260) is a

\chi_{c}-\rho^0

molecule, which is an isovector. In this picture, we can easily interpret why

Y(4260)\to \pi^+\pi^-J/\psi

has a larger rate than

Y(4260)\to D\bar D

which has not been observed, and we also predict existence of the other two components of the isotriplet and another two possible partner states which may be observed in the future experiments. A direct consequence of this structure is that for this molecular structure

Y(4260)\to \pi^+\pi^-J/\psi

mode is more favorable than

Y(4260)\to K\bar KJ/\psi

which may have a larger fraction if other proposed structures prevail.

13.30.Eg
13.75.Lb
Y(4260): model
meson meson: molecule
chi mesons: charm
rho(770)0
Y(4260): hadronic decay
Y(4260): decay modes
J/psi(3100)
Y(4260): width

References(10)

Figures(0)

Observation of a broad structure in the $\pi^+ \pi^- J/\psi$ mass spectrum around 4.26-GeV/c $^2$

BaBar

Collaboration

•

Bernard Aubert
(
- Annecy, LAPP
)

et al.

- Phys.Rev.Lett. 95 (2005) 142001
•
e-Print:
- hep-ex/0506081
•
DOI:
- 10.1103/PhysRevLett.95.142001

The Possible interpretations of Y(4260)

Shi-Lin Zhu
(
- Peking U. and
- Osaka U., Res. Ctr. Nucl. Phys.
)

- Phys.Lett.B 625 (2005) 212
•
e-Print:
- hep-ph/0507025
•
DOI:
- 10.1016/j.physletb.2005.08.068

Suppressed decay into open charm for the Y(4260) being an hybrid

E. Kou
(
- Louvain U. and
- Orsay, LPT
)
,
O. Pene
(
- Orsay, LPT
)

- Phys.Lett.B 631 (2005) 164-169
•
e-Print:
- hep-ph/0507119
•
DOI:
- 10.1016/j.physletb.2005.09.013

Four quark interpretation of Y(4260)

L. Maiani
(
- Rome U. and
- INFN, Rome
)
,
V. Riquer
(
- Rome U. and
- INFN, Rome
)
,
F. Piccinini
(
- INFN, Pavia and
- Pavia U.
)
,
A.D. Polosa
(
- Bari U. and
- INFN, Bari
)

- Phys.Rev.D 72 (2005) 031502
•
e-Print:
- hep-ph/0507062
•
DOI:
- 10.1103/PhysRevD.72.031502

Hadron Molecules and Charmonium Atom

M.B. Voloshin
(
- Moscow, ITEP
)
,
L.B. Okun
(
- Moscow, ITEP
)

- JETP Lett. 23 (1976) 333-336,
- Pisma Zh.Eksp.Teor.Fiz. 23 (1976) 369-372

Molecular Charmonium: A New Spectroscopy?

- Phys.Rev.Lett. 38 (1977) 317
•
DOI:
- 10.1103/PhysRevLett.38.317

Do Multi-Quark Hadrons Exist?

John D. Weinstein
(
- Toronto U.
)
,
Nathan Isgur
(
- Toronto U.
)

- Phys.Rev.Lett. 48 (1982) 659
•
DOI:
- 10.1103/PhysRevLett.48.659

The q q anti-q anti-q System in a Potential Model

John D. Weinstein
(
- Toronto U.
)
,
Nathan Isgur
(
- Toronto U.
)

- Phys.Rev.D 27 (1983) 588,
•
DOI:
- 10.1103/PhysRevD.27.588

K anti-K Molecules

John D. Weinstein
(
- Tennessee U.
)
,
Nathan Isgur
(
- Toronto U.
)

- Phys.Rev.D 41 (1990) 2236
•
DOI:
- 10.1103/PhysRevD.41.2236

Review of particle physics. Particle Data Group

S. Eidelman
(
- Novosibirsk, IYF
)
,
K.G. Hayes
(
- Hillsdale Coll.
)
,
K.A. Olive
(
- Minnesota U.
)
,
M. Aguilar-Benitez
(
- Madrid, CIEMAT
)
,
Claude Amsler
(
- Zurich U.
)

et al.

- Phys.Lett.B 592 (2004) 1-4, 1
•
DOI:
- 10.1016/j.physletb.2004.06.001