Open Access
Observation of a Neutral Structure near theD D ¯ * e + e − → ( D D ¯ * ) 0 π 0 s = 4.226
M. ABLIKIM
,
M. N. ACHASOV
,
X. C. Ai
,
O. Albayrak
,
M Albrecht
,
M. Albrecht
,
D. J. Ambrose
,
A. Amoroso
,
F. F. An
,
Q. An
,
J. Z. BAI
,
R. Baldini Ferroli
,
Y. BAN
,
D. W. Bennett
,
J V Bennett
,
M. Bertani
,
D. Bettoni
,
J. M. Bian
,
F Bianchi
,
E. Boger
,
I. Boyko
,
R. A. Briere
,
H. Cai
,
X Cai
,
O. Cakir
,
A. Calcaterra
,
G. F. Cao
,
S. A. Cetin
,
J. F. Chang
,
G. Chelkov
,
G. Chen
,
H. S. Chen
,
H. ‐y. Chen
,
J. C. Chen
,
M L Chen
,
Chen S. Chen
,
S. Chen Chen
,
S J Chen
,
X. Chen
,
X. R. Chen
,
Y.-B. Chen
,
H.-P. Cheng
,
X. K. Chu
,
G. Cibinetto
,
H. L. Dai
,
J. P. Dai
,
A. Dbeyssi
,
D. Dedovich
,
Z. Y. DENG
,
A. DENIG
,
I. Denysenko
,
M. Destefanis
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F. De Mori
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Y. Ding
,
C. Dong
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J. Dong
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L. Y. Dong
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M. Y. Dong
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S. X. DU
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P. F. Duan
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J. Z. Fan
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J. Fang
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S. S. Fang
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X. Fang
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Y. Fang
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L. Fava
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F. Feldbauer
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G. Felici
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C. Q. Feng
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E. Fioravanti
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M. FRITSCH
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C. D. FU
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G. Zhao
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J. W. ZHAO
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J. Y. Zhao
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J. Z. Zhao
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Lei Zhao
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Ling Zhao
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M. G. ZHAO
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Q. Zhao
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Q.W. Zhao
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S.J. Zhao
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T. C. Zhao
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Y. B. Zhao
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Z. G. ZHAO
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B. Zheng
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J. P. Zheng
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W. J. Zheng
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Y. H. Zheng
,
B. ZHONG
,
L. Zhou
,
X. Zhou
,
X. K. Zhou
,
X.-R. ZHOU
,
X. Y. Zhou
,
K. Zhu
,
K. J. Zhu
,
S Zhu
,
S.-H. Zhu
,
X L Zhu
,
Y. C. Zhu
,
Y. S. Zhu
,
Z. A. ZHU
,
J. Zhuang
,
L. Zotti
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B. S. ZOU
,
J. H. Zou
Publication type: Journal Article
Publication date: 2015-11-24
scimago Q1
wos Q1
SJR: 2.856
CiteScore: 15.6
Impact factor: 9.0
ISSN: 00319007, 10797114
PubMed ID:
26650295
General Physics and Astronomy
Abstract
A neutral structure in the DD[over ¯]^{*} system around the DD[over ¯]^{*} mass threshold is observed with a statistical significance greater than 10σ in the processes e^{+}e^{-}→D^{+}D^{*-}π^{0}+c.c. and e^{+}e^{-}→D^{0}D[over ¯]^{*0}π^{0}+c.c. at sqrt[s]=4.226 and 4.257 GeV in the BESIII experiment. The structure is denoted as Z_{c}(3885)^{0}. Assuming the presence of a resonance, its pole mass and width are determined to be [3885.7_{-5.7}^{+4.3}(stat)±8.4(syst)] MeV/c^{2} and [35_{-12}^{+11}(stat)±15(syst)] MeV, respectively. The Born cross sections are measured to be σ[e^{+}e^{-}→Z_{c}(3885)^{0}π^{0},Z_{c}(3885)^{0}→DD[over ¯]^{*}]=[77±13(stat)±17(syst)] pb at 4.226 GeV and [47±9(stat)±10(syst)] pb at 4.257 GeV. The ratio of decay rates B[Z_{c}(3885)^{0}→D^{+}D^{*-}+c.c.]/B[Z_{c}(3885)^{0}→D^{0}D[over ¯]^{*0}+c.c.] is determined to be 0.96±0.18(stat)±0.12(syst), consistent with no isospin violation in the process, Z_{c}(3885)^{0}→DD[over ¯]^{*}.
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ABLIKIM M. et al. Observation of a Neutral Structure near theDD¯*Mass Threshold ine+e−→(DD¯*)0π0ats=4.226and 4.257 GeV // Physical Review Letters. 2015. Vol. 115. No. 22. 222002
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ABLIKIM M. et al. Observation of a Neutral Structure near theDD¯*Mass Threshold ine+e−→(DD¯*)0π0ats=4.226and 4.257 GeV // Physical Review Letters. 2015. Vol. 115. No. 22. 222002
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@article{2015_ABLIKIM,
author = {M. ABLIKIM and M. N. ACHASOV and X. C. Ai and O. Albayrak and M Albrecht and M. Albrecht and D. J. Ambrose and A. Amoroso and F. F. An and Q. An and J. Z. BAI and R. Baldini Ferroli and Y. BAN and D. W. Bennett and J V Bennett and M. Bertani and D. Bettoni and J. M. Bian and F Bianchi and E. Boger and I. Boyko and R. A. Briere and H. Cai and X Cai and O. Cakir and A. Calcaterra and G. F. Cao and S. A. Cetin and J. F. Chang and G. Chelkov and G. Chen and H. S. Chen and H. ‐y. Chen and J. C. Chen and M L Chen and Chen S. Chen and S. Chen Chen and S J Chen and X. Chen and X. R. Chen and Y.-B. Chen and H.-P. Cheng and X. K. Chu and G. Cibinetto and H. L. Dai and J. P. Dai and A. Dbeyssi and D. Dedovich and Z. Y. DENG and A. DENIG and others},
title = {Observation of a Neutral Structure near theDD¯*Mass Threshold ine+e−→(DD¯*)0π0ats=4.226and 4.257 GeV},
journal = {Physical Review Letters},
year = {2015},
volume = {115},
publisher = {American Physical Society (APS)},
month = {nov},
url = {https://doi.org/10.1103/PhysRevLett.115.222002},
number = {22},
pages = {222002},
doi = {10.1103/PhysRevLett.115.222002}
}
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