title: Observation of new resonant structures in γγ → ωϕ, ϕϕ, and ωω.
abstract: The processes γγ → ωϕ, ϕϕ, and ωω are measured using an 870  fb(-1) data sample collected with the Belle detector at the KEKB asymmetric-energy e+ e- collider. Production of vector meson pairs is clearly observed and their cross sections are measured for masses that range from threshold to 4.0 GeV. In addition to signals from well established spin-zero and spin-two charmonium states, there are resonant structures below charmonium threshold, which have not been previously observed. We report a spin-parity analysis for the new structures and determine the products of the η(c), χ(c0), and χ(c2) two-photon decay widths and branching fractions to ωϕ, ϕϕ, and ωω.
authors.affiliation: Institute of High Energy Physics, Chinese Academy of Sciences, Beijing.
authors.forename: Z Q
authors.initials: ZQ
authors.lastname: Liu
authors.forename: C P
authors.initials: CP
authors.lastname: Shen
authors.forename: C Z
authors.initials: CZ
authors.lastname: Yuan
authors.forename: T
authors.initials: T
authors.lastname: Iijima
authors.forename: I
authors.initials: I
authors.lastname: Adachi
authors.forename: H
authors.initials: H
authors.lastname: Aihara
authors.forename: D M
authors.initials: DM
authors.lastname: Asner
authors.forename: V
authors.initials: V
authors.lastname: Aulchenko
authors.forename: T
authors.initials: T
authors.lastname: Aushev
authors.forename: A M
authors.initials: AM
authors.lastname: Bakich
authors.forename: K
authors.initials: K
authors.lastname: Belous
authors.forename: V
authors.initials: V
authors.lastname: Bhardwaj
authors.forename: B
authors.initials: B
authors.lastname: Bhuyan
authors.forename: M
authors.initials: M
authors.lastname: Bischofberger
authors.forename: A
authors.initials: A
authors.lastname: Bondar
authors.forename: A
authors.initials: A
authors.lastname: Bozek
authors.forename: M
authors.initials: M
authors.lastname: Bračko
authors.forename: T E
authors.initials: TE
authors.lastname: Browder
authors.forename: M-C
authors.initials: MC
authors.lastname: Chang
authors.forename: P
authors.initials: P
authors.lastname: Chang
authors.forename: A
authors.initials: A
authors.lastname: Chen
authors.forename: P
authors.initials: P
authors.lastname: Chen
authors.forename: B G
authors.initials: BG
authors.lastname: Cheon
authors.forename: R
authors.initials: R
authors.lastname: Chistov
authors.forename: I-S
authors.initials: IS
authors.lastname: Cho
authors.forename: K
authors.initials: K
authors.lastname: Cho
authors.forename: S-K
authors.initials: SK
authors.lastname: Choi
authors.forename: Y
authors.initials: Y
authors.lastname: Choi
authors.forename: J
authors.initials: J
authors.lastname: Dalseno
authors.forename: Z
authors.initials: Z
authors.lastname: Doležal
authors.forename: Z
authors.initials: Z
authors.lastname: Drásal
authors.forename: S
authors.initials: S
authors.lastname: Eidelman
authors.forename: D
authors.initials: D
authors.lastname: Epifanov
authors.forename: J E
authors.initials: JE
authors.lastname: Fast
authors.forename: V
authors.initials: V
authors.lastname: Gaur
authors.forename: N
authors.initials: N
authors.lastname: Gabyshev
authors.forename: A
authors.initials: A
authors.lastname: Garmash
authors.forename: Y M
authors.initials: YM
authors.lastname: Goh
authors.forename: J
authors.initials: J
authors.lastname: Haba
authors.forename: K
authors.initials: K
authors.lastname: Hayasaka
authors.forename: H
authors.initials: H
authors.lastname: Hayashii
authors.forename: Y
authors.initials: Y
authors.lastname: Horii
authors.forename: Y
authors.initials: Y
authors.lastname: Hoshi
authors.forename: W-S
authors.initials: WS
authors.lastname: Hou
authors.forename: Y B
authors.initials: YB
authors.lastname: Hsiung
authors.forename: H J
authors.initials: HJ
authors.lastname: Hyun
authors.forename: K
authors.initials: K
authors.lastname: Inami
authors.forename: A
authors.initials: A
authors.lastname: Ishikawa
authors.forename: R
authors.initials: R
authors.lastname: Itoh
authors.forename: M
authors.initials: M
authors.lastname: Iwabuchi
authors.forename: Y
authors.initials: Y
authors.lastname: Iwasaki
authors.forename: T
authors.initials: T
authors.lastname: Iwashita
authors.forename: T
authors.initials: T
authors.lastname: Julius
authors.forename: J H
authors.initials: JH
authors.lastname: Kang
authors.forename: T
authors.initials: T
authors.lastname: Kawasaki
authors.forename: C
authors.initials: C
authors.lastname: Kiesling
authors.forename: H J
authors.initials: HJ
authors.lastname: Kim
authors.forename: H O
authors.initials: HO
authors.lastname: Kim
authors.forename: J B
authors.initials: JB
authors.lastname: Kim
authors.forename: K T
authors.initials: KT
authors.lastname: Kim
authors.forename: M J
authors.initials: MJ
authors.lastname: Kim
authors.forename: Y J
authors.initials: YJ
authors.lastname: Kim
authors.forename: B R
authors.initials: BR
authors.lastname: Ko
authors.forename: S
authors.initials: S
authors.lastname: Koblitz
authors.forename: P
authors.initials: P
authors.lastname: Kodyš
authors.forename: S
authors.initials: S
authors.lastname: Korpar
authors.forename: P
authors.initials: P
authors.lastname: Križan
authors.forename: P
authors.initials: P
authors.lastname: Krokovny
authors.forename: T
authors.initials: T
authors.lastname: Kumita
authors.forename: A
authors.initials: A
authors.lastname: Kuzmin
authors.forename: Y-J
authors.initials: YJ
authors.lastname: Kwon
authors.forename: J S
authors.initials: JS
authors.lastname: Lange
authors.forename: S-H
authors.initials: SH
authors.lastname: Lee
authors.forename: J
authors.initials: J
authors.lastname: Li
authors.forename: X R
authors.initials: XR
authors.lastname: Li
authors.forename: Y
authors.initials: Y
authors.lastname: Li
authors.forename: J
authors.initials: J
authors.lastname: Libby
authors.forename: C
authors.initials: C
authors.lastname: Liu
authors.forename: D
authors.initials: D
authors.lastname: Liventsev
authors.forename: R
authors.initials: R
authors.lastname: Louvot
authors.forename: D
authors.initials: D
authors.lastname: Matvienko
authors.forename: S
authors.initials: S
authors.lastname: McOnie
authors.forename: K
authors.initials: K
authors.lastname: Miyabayashi
authors.forename: H
authors.initials: H
authors.lastname: Miyata
authors.forename: Y
authors.initials: Y
authors.lastname: Miyazaki
authors.forename: R
authors.initials: R
authors.lastname: Mizuk
authors.forename: G B
authors.initials: GB
authors.lastname: Mohanty
authors.forename: A
authors.initials: A
authors.lastname: Moll
authors.forename: T
authors.initials: T
authors.lastname: Mori
authors.forename: N
authors.initials: N
authors.lastname: Muramatsu
authors.forename: R
authors.initials: R
authors.lastname: Mussa
authors.forename: Y
authors.initials: Y
authors.lastname: Nagasaka
authors.forename: E
authors.initials: E
authors.lastname: Nakano
authors.forename: M
authors.initials: M
authors.lastname: Nakao
authors.forename: H
authors.initials: H
authors.lastname: Nakazawa
authors.forename: C
authors.initials: C
authors.lastname: Ng
authors.forename: S
authors.initials: S
authors.lastname: Nishida
authors.forename: K
authors.initials: K
authors.lastname: Nishimura
authors.forename: O
authors.initials: O
authors.lastname: Nitoh
authors.forename: T
authors.initials: T
authors.lastname: Nozaki
authors.forename: S
authors.initials: S
authors.lastname: Ogawa
authors.forename: T
authors.initials: T
authors.lastname: Ohshima
authors.forename: S
authors.initials: S
authors.lastname: Okuno
authors.forename: S L
authors.initials: SL
authors.lastname: Olsen
authors.forename: Y
authors.initials: Y
authors.lastname: Onuki
authors.forename: P
authors.initials: P
authors.lastname: Pakhlov
authors.forename: G
authors.initials: G
authors.lastname: Pakhlova
authors.forename: C W
authors.initials: CW
authors.lastname: Park
authors.forename: H K
authors.initials: HK
authors.lastname: Park
authors.forename: T K
authors.initials: TK
authors.lastname: Pedlar
authors.forename: R
authors.initials: R
authors.lastname: Pestotnik
authors.forename: M
authors.initials: M
authors.lastname: Petrič
authors.forename: L E
authors.initials: LE
authors.lastname: Piilonen
authors.forename: M
authors.initials: M
authors.lastname: Ritter
authors.forename: M
authors.initials: M
authors.lastname: Röhrken
authors.forename: S
authors.initials: S
authors.lastname: Ryu
authors.forename: H
authors.initials: H
authors.lastname: Sahoo
authors.forename: K
authors.initials: K
authors.lastname: Sakai
authors.forename: Y
authors.initials: Y
authors.lastname: Sakai
authors.forename: T
authors.initials: T
authors.lastname: Sanuki
authors.forename: Y
authors.initials: Y
authors.lastname: Sato
authors.forename: O
authors.initials: O
authors.lastname: Schneider
authors.forename: C
authors.initials: C
authors.lastname: Schwanda
authors.forename: R
authors.initials: R
authors.lastname: Seidl
authors.forename: K
authors.initials: K
authors.lastname: Senyo
authors.forename: M E
authors.initials: ME
authors.lastname: Sevior
authors.forename: M
authors.initials: M
authors.lastname: Shapkin
authors.forename: V
authors.initials: V
authors.lastname: Shebalin
authors.forename: T-A
authors.initials: TA
authors.lastname: Shibata
authors.forename: J-G
authors.initials: JG
authors.lastname: Shiu
authors.forename: B
authors.initials: B
authors.lastname: Shwartz
authors.forename: A
authors.initials: A
authors.lastname: Sibidanov
authors.forename: F
authors.initials: F
authors.lastname: Simon
authors.forename: P
authors.initials: P
authors.lastname: Smerkol
authors.forename: Y-S
authors.initials: YS
authors.lastname: Sohn
authors.forename: A
authors.initials: A
authors.lastname: Sokolov
authors.forename: E
authors.initials: E
authors.lastname: Solovieva
authors.forename: S
authors.initials: S
authors.lastname: Stanič
authors.forename: M
authors.initials: M
authors.lastname: Starič
authors.forename: T
authors.initials: T
authors.lastname: Sumiyoshi
authors.forename: G
authors.initials: G
authors.lastname: Tatishvili
authors.forename: Y
authors.initials: Y
authors.lastname: Teramoto
authors.forename: M
authors.initials: M
authors.lastname: Uchida
authors.forename: S
authors.initials: S
authors.lastname: Uehara
authors.forename: T
authors.initials: T
authors.lastname: Uglov
authors.forename: Y
authors.initials: Y
authors.lastname: Unno
authors.forename: S
authors.initials: S
authors.lastname: Uno
authors.forename: P
authors.initials: P
authors.lastname: Urquijo
authors.forename: G
authors.initials: G
authors.lastname: Varner
authors.forename: A
authors.initials: A
authors.lastname: Vinokurova
authors.forename: V
authors.initials: V
authors.lastname: Vorobyev
authors.forename: C H
authors.initials: CH
authors.lastname: Wang
authors.forename: P
authors.initials: P
authors.lastname: Wang
authors.forename: X L
authors.initials: XL
authors.lastname: Wang
authors.forename: M
authors.initials: M
authors.lastname: Watanabe
authors.forename: Y
authors.initials: Y
authors.lastname: Watanabe
authors.forename: K M
authors.initials: KM
authors.lastname: Williams
authors.forename: E
authors.initials: E
authors.lastname: Won
authors.forename: Y
authors.initials: Y
authors.lastname: Yamashita
authors.forename: Y
authors.initials: Y
authors.lastname: Yusa
authors.forename: C C
authors.initials: CC
authors.lastname: Zhang
authors.forename: Z P
authors.initials: ZP
authors.lastname: Zhang
authors.forename: V
authors.initials: V
authors.lastname: Zhilich
authors.forename: V
authors.initials: V
authors.lastname: Zhulanov