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I = 0 C = +1 mesons from 1920 to 2410 MeV | | A.V. Anisovich
; C.A. Baker
; C.J. Batty
; D.V. Bugg
; C. Hodd
; H.C. Lu
; V.A. Nikonov
; A.V. Sarantsev
; V.V. Sarantsev
; B.S. Zou
; | | Date: |
5 Sep 2011 | | Abstract: | A combined fit is presented to data on pbar-p annihilation in flight to final
states eta-pizero-pizero, pizero-pizero, eta-eta, eta-etaprime and
piminus-piplus. The emphasis lies in improving an earlier study of
eta-pizero-pizero by fitting data at nine pbar momenta simultaneously and with
parameters consistent with the two-body channels. There is evidence for all of
the I=0, C=+ q-qbar states expected in this mass range. New resonances are
reported with masses and widths M,Gamma as follows: JPC = 4^{-+} (2328+-38,
Gamma=240+-90) MeV, 1^{++} (1971+-15, 240+-45) MeV, 0^{-+} (2285+-20, 325+-30)
MeV, and 0^{-+} (2010 ^{+35}_{-60}, 270+-60) MeV. Errors on the masses and
widths of other resonances are also reduced substantially. All states lie close
to parallel straight line trajectories of excitation number v. mass squared. | | Source: | arXiv, 1109.0883 | | Services: | Forum | Review | PDF | Favorites | |
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