MEASUREMENT OF THE DECAY DISTRIBUTION OF ETA'-]PI(-)GAMMA AND EVIDENCE FOR THE BOX ANOMALY()PI()

Authors
ABELE A ADOMEIT J AMSLER C BAKER CA BARNETT BM BATTY CJ BENAYOUN M BERDOZ A BEUCHERT K BISCHOFF S BLUM P BRAUNE K BROSE J BUGG DV CASE T COOPER A CRAMER O CROWE KM DEGENER T DJAOSHVILI N VONDOMBROWSKI S DOSER M DUNNWEBER W ENGELHARDT D FAESSLER MA GIARRITTA P HACKMANN R HADDOCK RP HEINSIUS FH HEINZELMANN M HERZ M HESSEY NP HIDAS P HODD C HOLTZHAUSSEN C JAMNIK D KALINOWSKY H KALTEYER B KAMMLE B KAMMEL P KIEL T KISIEL J KLEMPT E KOCH H KOLO C KUNZE M LAKATA M LANDUA R LUDEMANN J MATTHAY H MCCRADY R MEIER J MEYER CA MONTANET L OUARED R OULDSAADA F PETERS K PIETRA C PINDER CN PINTER G REGENFUS C REISSMANN J RESAG S ROETHEL W SCHMIDT P SCOTT I 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 ZOU BS
Citation
A. Abele et al., MEASUREMENT OF THE DECAY DISTRIBUTION OF ETA'-]PI(-)GAMMA AND EVIDENCE FOR THE BOX ANOMALY()PI(), Physics letters. Section B, 402(1-2), 1997, pp. 195-206
Citations number
26
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
402
Issue
1-2
Year of publication
1997
Pages
195 - 206
Database
ISI
SICI code
0370-2693(1997)402:1-2<195:MOTDDO>2.0.ZU;2-6
Abstract
The distribution of m(pi(+)pi(-)) in the decay eta' --> pi(+)pi(-)gamm a has been measured with the Crystal Barrel detector. The results are based on a total of 7392 observed eta' decays. The box anomaly constan t is extracted from this and its value is found to agree well with the oretical expectations. The pseudoscalar nonet parameters (f(1), f(8) a nd theta(PS)) are determined. Finally, we find that there is a problem of consistency between QCD and the standard VDM assumption. (C) 1997 Published by Elsevier Science B.V.