ANTIPROTON-PROTON ANNIHILATION AT REST INTO OMEGA-PI-0-PI-0

Authors
AMSLER C ARMSTRONG D AUGUSTIN I BAKER CA BARNETT BM BATTY CJ BEUCHERT K BIRIEN P BISTIRLICH J BLUM P BOSSINGHAM R BOSSY H BRAUNE K BROSE J BUGG DV BURCHELL M CASE T CHUNG SU COOPER A CROWE KM DIETZ HP VONDOMBROWSKI S DOSER M DUNNWEBER W ENGELHARDT D ENGLERT M FAESSLER MA FELIX C FOLGER G HACKMANN R HADDOCK RP HEINSIUS FH HESSEY NP HIDAS P ILLINGER P JAMNIK D JAVORFI Z KALINOWSKY H KAMMLE B KIEL T KISIEL J KLEMPT E KOBEL M KOCH H KOLO C KONIGSMANN K KUNZE M LANDUA R LUDEMANN J MATTHAEY H MERKEL M MERLO JP MEYER CA MONTANET L NOBLE A OULDSAADA F PETERS K PINTER G RAVNDAL S SALK J SANJARI AH SCHAFER E SCHMID B SCHMIDT P SPANIER S STRASSBURGER C STROHBUSCH U SUFFERT M URNER D VOLCKER C WALTER F WALTHER D WIEDNER U WINTER N ZOLL J ZUPANCIC C
Citation
C. Amsler et al., ANTIPROTON-PROTON ANNIHILATION AT REST INTO OMEGA-PI-0-PI-0, Physics letters. Section B, 311(1-4), 1993, pp. 362-370
Citations number
28
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
311
Issue
1-4
Year of publication
1993
Pages
362 - 370
Database
ISI
SICI code
0370-2693(1993)311:1-4<362:AAARIO>2.0.ZU;2-6
Abstract
The annihilation channel ppBAR --> omegapi0pi0, where omega decays to pi0gamma, was studied with antiprotons stopped in liquid hydrogen. Thi s reaction is dominated by the production of b1(0)(1235) with contribu tions from f2(1270) and the pipi S-wave. The branching ratio for ppBAR --> omegapi0pi0 is (2.00 +/- 0.21)% of all annihilations. The branchi ng ratios for b1(0)(1235)pi0 (b1 --> omegapi0) and f2(1270)omega (f2 - -> pi0pi0) are (0.92 +/- 0.11)% and (0.57 +/- 0.07)% of all annihilati ons, respectively. Upper limits for the production of vector mesons de caying to omegapi are given and the pipi mass distribution around 1 Ge V is discussed.