Observation of $Z_c(3900)^{0}$ in $e^+e^-\to\pi^0\pi^0 J/\psi$ - INSPIRE

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Observation of $Z_c(3900)^{0}$ in $e^+e^-\to\pi^0\pi^0 J/\psi$

BESIII

Collaboration

•

M. Ablikim
(
- Beijing, Inst. High Energy Phys.
)

Jun 19, 2015

7 pages

Published in:

Phys.Rev.Lett. 115 (2015) 11, 112003

Published: Sep 11, 2015

e-Print:

1506.06018 [hep-ex]

DOI:

10.1103/PhysRevLett.115.112003

PDG:

{{\mathit T}_{{{c {{\overline{\mathit c}}} 1}}}{(3900)}}

\rightarrow

{{\mathit J / \psi}}{{\mathit \pi}}

Experiments:

BEPC-BES-III

View in:

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reference search192 citations

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Abstract: (APS)

Using a data sample collected with the BESIII detector operating at the BEPCII storage ring, we observe a new neutral state Zc(3900)0 with a significance of 10.4σ. The mass and width are measured to be 3894.8±2.3±3.2 MeV/c2 and 29.6±8.2±8.2 MeV, respectively, where the first error is statistical and the second systematic. The Born cross section for e+e-→π0π0J/ψ and the fraction of it attributable to π0Zc(3900)0→π0π0J/ψ in the range Ec.m.=4.19–4.42 GeV are also determined. We interpret this state as the neutral partner of the four-quark candidate Zc(3900)±.

Note:

7 pages, 4 figures, submit to Physics Review Letter

14.40.Rt
13.66.Bc
14.40.Pq
electron positron: annihilation
electron positron: colliding beams
pi: pair production
J/psi(3100): associated production
Z/c(3900)
mass: width
tetraquark

References(43)

Figures(0)

[1]

Observation of a Charged Charmoniumlike Structure in $e^+e^- \to \pi^+\pi^- J/\psi$ at $\sqrt{s}$ =4.26 GeV

BESIII

Collaboration

•

M. Ablikim
(
- Beijing, Inst. High Energy Phys.
)

et al.

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e-Print:
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Belle

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Z.Q. Liu
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et al.

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[3]

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•
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Belle

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BESIII

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(
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)
,
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(
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)
,
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)
,
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(
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)

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[6]

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e-Print:
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Jian-Rong Zhang
(
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)

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•
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[6]

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J.M. Dias
(
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)
,
F.S. Navarra
(
- Sao Paulo U.
)
,
M. Nielsen
(
- Sao Paulo U.
)
,
C.M. Zanetti
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)

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•
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•
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[6]

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M.B. Voloshin
(
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)

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•
e-Print:
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•
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[6]

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Eric Braaten
(
- Ohio State U.
)

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•
e-Print:
- 1305.6905
•
DOI:
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[6]

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E. Wilbring
(
- Bonn U., HISKP and
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)
,
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(
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)
,
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(
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)

- Phys.Lett.B 726 (2013) 326-329
•
e-Print:
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•
DOI:
- 10.1016/j.physletb.2013.08.059

[6]

Reproducing the $Z_c(3900)$ structure through the initial-single-pion-emission mechanism

Dian-Yong Chen
(
- Lanzhou, Inst. Modern Phys. and
- Lanzhou U.
)
,
Xiang Liu
(
- Lanzhou U. and
- Lanzhou, Inst. Modern Phys.
)
,
Takayuki Matsuki
(
- Tokyo Kasei U.
)

- Phys.Rev.D 88 (2013) 3, 036008
•
e-Print:
- 1304.5845
•
DOI:
- 10.1103/PhysRevD.88.036008

[6]

Decay Property of Axial-Vector Tetra-Quark Mesons

Kunihiko Terasaki
(
- Kyoto U., Yukawa Inst., Kyoto
)

e-Print:
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[6]

Heavy quark spin selection rules in meson-antimeson states

Yan-Rui Liu
(
- Shandong U.
)

- Phys.Rev.D 88 (2013) 074008
•
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•
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[6]

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(
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,
Christoph Hanhart
(
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)
,
Qiang Zhao
(
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)

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[6]

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Yubing Dong
(
- Beijing, Inst. High Energy Phys. and
- TPCSF, Beijing
)
,
Amand Faessler
(
- Tubingen U.
)
,
Thomas Gutsche
(
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)
,
Valery E. Lyubovitskij
(
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)

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[6]

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Xiao-Hai Liu
(
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)
,
Gang Li
(
- Qufu Normal U.
)

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e-Print:
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[6]

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Sasa Prelovsek
(
- Ljubljana U. and
- Stefan Inst., Ljubljana
)
,
Luka Leskovec
(
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)

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e-Print:
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[6]

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Dian-Yong Chen
(
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- Lanzhou U.
)
,
Xiang Liu
(
- Lanzhou, Inst. Modern Phys. and
- Lanzhou U.
)
,
Takayuki Matsuki
(
- Tokyo Kasei U.
)

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•
e-Print:
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•
DOI:
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[6]

Prediction of an $I=1$ $D \bar D^*$ state and relationship to the claimed $Z_c(3900)$ , $Z_c(3885)$

F. Aceti
(
- Valencia U. and
- Valencia U., IFIC
)
,
M. Bayar
(
- Kocaeli U.
)
,
E. Oset
(
- Valencia U. and
- Valencia U., IFIC
)
,
A. Martinez Torres
(
- Sao Paulo U.
)
,
K.P. Khemchandani
(
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)

et al.

- Phys.Rev.D 90 (2014) 1, 016003
•
e-Print:
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•
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[6]

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•
e-Print:
- 1310.2422
•
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[6]

Four-Quark Hadrons: an Updated Review

Angelo Esposito
(
- Columbia U.
)
,
Andrea L. Guerrieri
(
- Rome U., Tor Vergata and
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)
,
Fulvio Piccinini
(
- INFN, Pavia
)
,
Alessandro Pilloni
(
- INFN, Rome and
- Rome U.
)
,
Antonio D. Polosa
(
- INFN, Rome and
- Rome U.
)

- Int.J.Mod.Phys.A 30 (2015) 1530002
•
e-Print:
- 1411.5997
•
DOI:
- 10.1142/S0217751X15300021

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