Observation of f0(1770) -> eta-eta in pbar-p -> eta-eta-pizero reactions from 600 to 1200 MeV/c

A.V. Anisovich; A.V. Sarantsev; B.S. Zou; C.A. Baker; C. Hodd; C.J. Batty; D.V. Bugg; I. Scott; R.P. Haddock; V.A. Nikonov

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Observation of f0(1770) -> eta-eta in pbar-p -> eta-eta-pizero reactions from 600 to 1200 MeV/c

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arxiv 1109.4819 v1 pith:QBJSEHBX submitted 2011-09-22 hep-ex

A.V. Anisovich , C.A. Baker , C.J. Batty , D.V. Bugg , R.P. Haddock , C. Hodd , V.A. Nikonov , A.V. Sarantsev

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V.V. Sarantsev I. Scott B.S. Zou

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keywords pbar-peta-etaeta-eta-pizeromomentabeamclearlycoverdata

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We present data on pbar-p -> eta-eta-pizero at beam momenta of 600, 900, 1050, and 1200 MeV/c. At the higher three momenta, a signal is clearly visible due to pbar-p -> f_0(1770)-pizero, f_0(1770) -> eta-eta. It has mass 1770+-12 MeV and width 220+-40 MeV, where errors cover systematic uncertainties as well as statistics.

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