Observation of two resonant structures in e+ e- -->pi+ pi- psi(2S) via initial-state radiation at Belle.
The cross section for e+ e- --> pi+ pi- psi(2S) between threshold and sqrt[s]=5.5 GeV is measured using 673 fb(-1) of data on and off the Upsilon(4S) resonance collected with the Belle detector at KEKB. Two resonant structures are observed in the pi+ pi- psi(2S) invariant-mass distribution, one at 4361 +/- 9 +/- 9 MeV/c2 with a width of 74 +/- 15 +/- 10 MeV/c2, and another at 4664 +/- 11 +/- 5 MeV/c2 with a width of 48 +/- 15 +/- 3 MeV/c2, if the mass spectrum is parametrized with the coherent sum of two Breit-Wigner functions. These values do not match those of any of the known charmonium states.
Wang
X L
XL
Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, PR China.
Yuan
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CZ
Shen
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Wang
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Adachi
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Aihara
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Arinstein
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Aushev
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Bakich
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Barberio
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Bedny
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Bhardwaj
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Bitenc
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Blyth
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Bondar
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Bozek
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Bracko
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Brodzicka
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Browder
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Chang
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Chen
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Chen
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Cheon
B G
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Chiang
C-C
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Chistov
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Cho
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Choi
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Choi
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Dalseno
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Danilov
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Dash
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Drutskoy
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Eidelman
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Epifanov
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Gabyshev
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Go
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Gokhroo
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Ha
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Hayasaka
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Hayashii
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Hazumi
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Heffernan
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Hoshi
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Hou
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Hyun
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HJ
Iijima
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Inami
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Ishikawa
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Ishino
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Itoh
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Iwasaki
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Kah
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DH
Kang
J H
JH
Kawai
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Kawasaki
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Kichimi
H
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Kim
H O
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Kim
S K
SK
Kim
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Kinoshita
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Korpar
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Krizan
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Krokovny
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Kumar
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Kuo
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Kuzmin
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Lange
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Lee
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Lee
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Lee
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Lesiak
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Limosani
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Lin
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Liu
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Liventsev
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Mandl
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McOnie
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Medvedeva
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Miyabayashi
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Miyake
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Miyata
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Mizuk
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Mori
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Nakano
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Nakao
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Nakazawa
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Natkaniec
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Nishida
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Nitoh
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Noguchi
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Ogawa
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Ohshima
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Okuno
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Olsen
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Ozaki
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Pakhlov
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Pakhlova
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Palka
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Park
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Park
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Park
K S
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Pestotnik
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Piilonen
L E
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Poluektov
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Sahoo
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Sakai
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Schneider
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Sekiya
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Sevior
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Shapkin
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Shibuya
H
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Shiu
J-G
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Shwartz
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Singh
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Sokolov
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Somov
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Stanic
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Staric
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Sumiyoshi
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Takasaki
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Tamai
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Tanaka
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Taylor
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Teramoto
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Tikhomirov
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Uehara
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Ueno
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Uglov
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Unno
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Uno
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Urquijo
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Varner
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Villa
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Vinokurova
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Wang
C C
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Wang
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Watanabe
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Won
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Yabsley
B D
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Yamaguchi
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Yamashita
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Yamauchi
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M
Zhang
C C
CC
Zhang
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Zhilich
V
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Zhulanov
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Zupanc
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