OBSERVATION OF ANTIHYDROGEN PRODUCTION IN-FLIGHT AT CERN

Authors
BAUR G BOERO G BRAUKSIEPE S BUZZO A EYRICH W GEYER R GRZONKA D HAUFFE J KILIAN K LOVETERE M MACRI M MOOSBURGER M NELLEN R OELERT W PASSAGGIO S POZZO A ROHRICH K SACHS K SCHEPERS G SEFZICK T SIMON RS STRATMANN R STINZING F WOLKE M
Citation
G. Baur et al., OBSERVATION OF ANTIHYDROGEN PRODUCTION IN-FLIGHT AT CERN, Hyperfine interactions, 109(1-4), 1997, pp. 191-203
Citations number
23
Categorie Soggetti
Physics, Atomic, Molecular & Chemical","Physics, Nuclear","Physics, Condensed Matter
Journal title
Hyperfine interactions → ACNP
ISSN journal
03043843
Volume
109
Issue
1-4
Year of publication
1997
Pages
191 - 203
Database
ISI
SICI code
0304-3843(1997)109:1-4<191:OOAPIA>2.0.ZU;2-0
Abstract
The observation of the production of antihydrogen atoms <(H)over bar ( 0)> = <(p)over bar e(+)>, the simplest atomic bound state of antimatte r, is presented.A method has been used by the PS210 collaboration at L EAR which assumes that the production of <(H)over bar (0)> is predomin antly mediated by the e(+)e(-) pair creation via the two-photon mechan ism in the antiproton-nucleus interaction. Neutral <(H)over bar (0)> a toms are indentified by a unique sequence of characteristics. In princ iple <(H)over bar (0)> is well suited for investigations of fundamenta l CPT violation studies under different forces, however, in our invest igations we concentrate on the production of this antimatter object, s ince so far it had not been observed. The production of eleven antihyd rogen atoms is reported including possibly 2 +/- 1 background signals, the observed yield agrees with theoretical predictions.