OBSERVATION OF RADIATIVE (P)OVER-BAR-P ANNIHILATION INTO A PHI-MESON

Authors
AMSLER C ARMSTRONG DS AUGUSTIN I BAKER CA BARNETT BM BATTY CJ BEUCHERT K BIRIEN P BLUM P BOSSINGHAM R BRAUNE K BROSE J BUGG DV BURCHELL M CASE T COOPER A CRAMER O CROWE KM DEGENER T DIETZ HP VONDOMBROWSKI S DOSER M DUNNWEBER W ENGELHARDT D ENGLERT M FAESSLER MA FELIX C HACKMANN R HADDOCK RP HEINSIUS FH HERZ M HESSEY NP HIDAS P ILLINGER P JAMNIK D KALINOWSKY H KAMMLE B KIEL T KISIEL J KLEMPT E KOBEL M KOCH H KOLO C KONIGSMANN K KUNZE M LAKATA M LANDUA R LUDEMANN J MATTHAY H MCCRADY R MERKEL M MERLO JP MEYER CA MONTANET L NOBLE A OULDSAADA F PETERS K PINDER CN PINTER G RAVNDAL S REGENFUS C SCHAFER E SCHMIDT P SEIBERT R SPANIER S STOCK H STRASSBURGER C STROHBUSCH U SUFFERT M THOMA U TISCHHAUSER M URNER D VOLCKER C WALTER F WALTHER D WIEDNER U WINTER N ZOLL J ZOU BS ZUPANCIC C
Citation
C. Amsler et al., OBSERVATION OF RADIATIVE (P)OVER-BAR-P ANNIHILATION INTO A PHI-MESON, Physics letters. Section B, 346(3-4), 1995, pp. 363-370
Citations number
20
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
346
Issue
3-4
Year of publication
1995
Pages
363 - 370
Database
ISI
SICI code
0370-2693(1995)346:3-4<363:OOR(AI>2.0.ZU;2-O
Abstract
The annihilation ($) over bar pp --> phi gamma has been investigated w ith the Crystal Barrel detector at LEAR for antiprotons stopped in liq uid hydrogen. The observed branching ratio BR(($) over bar pp --> phi gamma) = (1.7 +/- 0.4). 10(-5) is almost two orders of magnitude highe r than expected from the OZI-rule, As a by-product, the branching rati os BR(($) over bar pp --> KLKS) = (9.0 +/- 0.6). 10(-4) and BR(($) ove r bar pp --> phi pi(0)) = (5.5 +/- 0.7). 10(-4) have been measured.