(P)OVER-BAR-P ANNIHILATION AT REST INTO KLK+ -PI(-/+)/

Authors
ABELE A BISCHOFF S BLUM P DJAOSHVILI N ENGELHARDT D HERBSTRITH A HOLTZHAUSSEN C TISCHHAUSER M ADOMEIT J KAMMLE B MEIER J SCHMIDT P SEIBERT R STROHBUSCH U AMSLER C VONDOMBROWSKI S GIARRITTA P HEINZELMANN M OULDSAADA F PIETRA C REGENFUS C SPANIER S BAKER CA BATTY CJ PINDER CN BARNETT BM CREDE V EHMANNS A HERZ M KALINOWSKY H KLEMPT E PICK B RESAG S STRASSBURGER C THOMA U WITTMACK K BENAYOUN M BERDOZ A MCCRADY R MEYER CA BEUCHERT K DEGNER T KOCH H KUNZE M KURILLA U LUDEMANN J MATTHAY H PETERS K RATAJCZAK M STOCK H BRAUNE K CRAMER O DUNNWEBER W FAESSLER MA HESSEY NP JAMNIK D KOLO C ROETHEL W VOLCKER C WALLIS S WALTHER D WIEDNER U ZUPANCIC C CASE T CROWE KM HEINSIUS FH KAMMEL P LAKATA M DOSER M KISIEL J LANDUA R MONTANET L OUARED R HADDOCK RP HIDAS P SUFFERT M
Citation
A. Abele et al., (P)OVER-BAR-P ANNIHILATION AT REST INTO KLK+ -PI(-/+)/, Physical review. D. Particles and fields, 57(7), 1998, pp. 3860-3872
Citations number
37
Categorie Soggetti
Physics, Particles & Fields
Journal title
Physical review. D. Particles and fields → ACNP
ISSN journal
05562821
Volume
57
Issue
7
Year of publication
1998
Pages
3860 - 3872
Database
ISI
SICI code
0556-2821(1998)57:7<3860:(AARIK>2.0.ZU;2-C
Abstract
We present a measurement and partial wave analysis of the final state K(L)K(+/-)pi(-/+) of (p) over bar p annihilation at rest in liquid hyd rogen. This reaction is important for the study of the KK decay mode o f scalar resonances, in particular, the isovectors a(0)(980) and a(0)( 1450). The determination of the a(0)(1450) production also fixes the ( K) over bar K coupling of the isoscalar f(0)(1500) which is discussed as a glueball. We find B((p) over bar p -->a(0)(1450)pi;a(0)(1450)-->( K) over bar K)=(8.88+/-1.68) X 10(-4) and hence B((p) over bar p-->f(0 )(1500)pi;f(0)(1500)-->(K) over bar K)=(4.52 +/- 0.36) x 10(-4). The m ass and width of a(0)(1450) are m = 1480+/-30 MeV/c(2) and Gamma = 265 +/-15 MeV/c(2), respectively. For a(0)(980) we determine the relative ratio B((p) over bar p-->a(0) pi;a(0)-->(K) over bar K)/B((p) over bar p-->a(0) pi;a(0)-->pi eta)=0.23+/-0.05 and its relative coupling, (K) over bar K to pi eta, is 1.03+/-0.14. [S0556-2821(98)02907-5].