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Measurement of direct f0(980) photoproduction on the proton

  • M. Battaglieri
  • , R. De Vita
  • , A. P. Szczepaniak
  • , K. P. Adhikari
  • , M. Aghasyan
  • , M. J. Amaryan
  • , P. Ambrozewicz
  • , M. Anghinolfi
  • , G. Asryan
  • , H. Avakian
  • , H. Bagdasaryan
  • , N. Baillie
  • , J. P. Ball
  • , N. A. Baltzell
  • , V. Batourine
  • , I. Bedlinskiy
  • , M. Bellis
  • , N. Benmouna
  • , B. L. Berman
  • , L. Bibrzycki
  • A. S. Biselli, C. Bookwalter, S. Bouchigny, S. Boiarinov, R. Bradford, D. Branford, W. J. Briscoe, W. K. Brooks, S. Bültmann, V. D. Burkert, J. R. Calarco, S. L. Careccia, D. S. Carman, L. Casey, S. Chen, L. Cheng, E. Clinton, P. L. Cole, P. Collins, D. Crabb, H. Crannell, V. Crede, J. P. Cummings, D. Dale, A. Daniel, N. Dashyan, R. De Masi, E. De Sanctis, P. V. Degtyarenko, A. Deur

Research output: Contribution to journalArticlepeer-review

Abstract

We report on the results of the first measurement of exclusive f0(980) meson photoproduction on protons for Eγ=3.0-3.8GeV and -t=0.4-1.0GeV2. Data were collected with the CLAS detector at the Thomas Jefferson National Accelerator Facility. The resonance was detected via its decay in the π+π- channel by performing a partial wave analysis of the reaction γp→pπ+π-. Clear evidence of the f0(980) meson was found in the interference between P and S waves at Mπ+π-∼1GeV. The S-wave differential cross section integrated in the mass range of the f0(980) was found to be a factor of about 50 smaller than the cross section for the ρ meson. This is the first time the f0(980) meson has been measured in a photoproduction experiment.

Original languageEnglish (US)
Article number102001
JournalPhysical review letters
Volume102
Issue number10
DOIs
StatePublished - Mar 9 2009

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