EVIDENCE FOR ETA-ETA RESONANCES IN ANTIPROTON PROTON ANNIHILATIONS AT2950 LESS-THAN-ROOT-S-LESS-THAN 3620 MEV

Authors
ARMSTRONG TA BETTONI D BHARADWAJ V BIINO C BORREANI G BROEMMELSIEK D BUZZO A CALABRESE R CECCUCCI A CESTER R CHURCH M DALPIAZ P DALPIAZ PF DIBENEDETTO R DIMITROYANNIS D FABBRI MG FAST J GIANOLI A GINSBURG CM GOLLWITZER K HAHN A HASAN M HSUEH S LEWIS R LUPPI E MACRI M MAJEWSKA AM MANDELKERN M MARCHETTO F MARINELLI M MARQUES J MARSH W MARTINI M MASUZAWA M MENICHETTI E MIGLIORI A MUSSA R PALLAVICINI M PALESTINI S PASTRONE N PATRIGNANI C PEOPLES J PESANDO L PETRUCCI F PIA MG PORDES S RAPIDIS P RAY R REID J RINAUDO G ROCCUZZO B ROSEN J SANTRONI A SARMIENTO M SAVRIE M SCALISI A SCHULTZ J SETH KK SMITH A SMITH GA SOZZI M TROKENHEIM S WEBER MF WERKEMA S ZHANG Y ZHAO J ZIOULAS G
Citation
Ta. Armstrong et al., EVIDENCE FOR ETA-ETA RESONANCES IN ANTIPROTON PROTON ANNIHILATIONS AT2950 LESS-THAN-ROOT-S-LESS-THAN 3620 MEV, Physics letters. Section B, 307(3-4), 1993, pp. 394-398
Citations number
10
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
307
Issue
3-4
Year of publication
1993
Pages
394 - 398
Database
ISI
SICI code
0370-2693(1993)307:3-4<394:EFERIA>2.0.ZU;2-9
Abstract
We present the first high-statistics study of the etaeta system over t he mass range 1000-3000 MeV/c2. The experiment was performed at the Fe rmilab Antiproton Accumulator, and the data sample consists of six-pho ton final states produced in antiproton-proton annihilations at square -root s in the range 2950-3620 MeV. We find evidence for three states with masses 1488 +/- 10 MeV/c2, 1748 +/- 10 MeV/c2 and 2104 +/- 20 MeV /c2 respectively.