FINAL-STATE INTERACTIONS IN 3 MESON SYSTEMS - ANALYSIS OF DATA ON (P)OVER-BAR-P-]PI-0-PI-0-PI-0 AND ETA-ETA-PI-0 AT REST

被引:65
作者
ANISOVICH, VV [1 ]
BUGG, DV [1 ]
SARANTSEV, AV [1 ]
ZOU, BS [1 ]
机构
[1] ST PETERSBURG NUCL PHYS INST,GATCHINA 188350,RUSSIA
来源
PHYSICAL REVIEW D | 1994年 / 50卷 / 03期
关键词
D O I
10.1103/PhysRevD.50.1972
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We provide a theoretical and computational formalism for the study of three-body annihilation of ppBAR. It includes (i) an analysis of three-body equations with the purpose of extracting the leading singularities and (ii) an analysis of low-energy pipi, KKBAR, 7171, and pieta amplitudes and the reconstruction of them from available experimental data. Based on this formalism, we perform an analysis of data on ppBAR --> pi0pi0pi0 and etaetapi0 at rest. The data are fitted well by pure S-1(0) annihilation and require two I = 0,J(PC) = 0++ resonances with M1 = 1335 +/- 40 mev, GAMMA1 = 255(+60\-40) MeV, and M2 = 1505 +/- 20 MeV, GAMMA2 = 150 +/- 20 MeV. The latter explains features of the data previously interpreted in an alternative way as due to A(x)(1515) with J(PC) = 2++. As a second step, we evaluate the magnitude of the amplitudes due to triangle singularities which result from rescatterings of outgoing mesons. Taking into account these rescattering processes enhances the magnitudes of low-lying resonances, notably f0(975).
引用
收藏
页码:1972 / 1991
页数:20
相关论文
共 60 条
[31]  
BUGG DV, 1993, IN PRESS JUL P EUR H
[32]  
CASTILLEJO L, 1956, PHYS REV D, V101, P45
[33]  
CHEN LP, 1992, HADRON 91, P111
[34]  
DAKHNO LG, 1987, SOV J NUCL PHYS, V46, P96
[35]   THE PHENOMENOLOGICAL REPRESENTATION OF K-BAR-NUCLEON SCATTERING AND REACTION AMPLITUDES [J].
DALITZ, RH ;
TUAN, SF .
ANNALS OF PHYSICS, 1960, 10 (03) :307-351
[36]   THE DECAYS OF THE RHO'1 AND OMEGA'1 MESONS [J].
DONNACHIE, A ;
CLEGG, AB .
ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1991, 51 (04) :689-693
[37]   THE PHYSICS OF NUCLEON ANTINUCLEON ANNIHILATION [J].
DOVER, CB ;
GUTSCHE, T ;
MARUYAMA, M ;
FAESSLER, A .
PROGRESS IN PARTICLE AND NUCLEAR PHYSICS, 1992, 29 :87-173
[38]   RESCATTERING EFFECTS AND THE SCHMID THEOREM [J].
GOEBEL, CJ ;
TUAN, SF ;
SIMMONS, WA .
PHYSICAL REVIEW D, 1983, 27 (05) :1069-1074
[39]   HIGH STATISTICS STUDY OF REACTION PI-P-]PI-PI+N - APPARATUS, METHOD OF ANALYSIS, AND GENERAL FEATURES OF RESULTS AT 17 GEV-C [J].
GRAYER, G ;
HYAMS, B ;
JONES, C ;
SCHLEIN, P ;
WEILHAMMER, P ;
BLUM, W ;
DIETL, H ;
KOCH, W ;
LORENZ, E ;
LUTJENS, G ;
MANNER, W ;
MEISSBURGER, J ;
OCHS, W ;
STIERLIN, U .
NUCLEAR PHYSICS B, 1974, 75 (02) :189-245
[40]   IMPLICATIONS FOR LOGARITHMIC-SINGULARITY CONTRIBUTION TO E(+)E(-)-]PI(+)PI(-)-GAMMA REACTION AT Q(2)=0.9GEV(2) FROM BREMSSTRAHLUNG BACKGROUND [J].
HE, XG ;
PAKVASA, S ;
SIMMONS, WA ;
TUAN, SF .
PHYSICAL REVIEW D, 1985, 31 (09) :2356-2359