TRANSITION FORM-FACTORS IN PI-0, ETA, AND ETA' COUPLINGS TO GAMMA-GAMMA-STAR

被引:48
作者
AMETLLER, L
BIJNENS, J
BRAMON, A
CORNET, F
机构
[1] CERN,DIV THEORY,CH-1211 GENEVA 23,SWITZERLAND
[2] UNIV AUTONOMA BARCELONA,FIS TEOR GRP,E-08193 BARCELONA,SPAIN
[3] UNIV GRANADA,DEPT FIS TEOR & COSMOS,E-18071 GRANADA,SPAIN
来源
PHYSICAL REVIEW D | 1992年 / 45卷 / 03期
关键词
D O I
10.1103/PhysRevD.45.986
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Recent measurements of the transition form factors for the P-gamma-gamma* vertices, with P = pi-0, eta, and eta', are compared with different models. These include vector-meson dominance, constituent-quark loops, the QCD-inspired interpolation by Brodsky-Lepage, and chiral perturbation theory. General agreement is observed and differences-due to SU(3) breaking-are stressed and discussed.
引用
收藏
页码:986 / 989
页数:4
相关论文
共 17 条
[1]   INVESTIGATION OF THE ELECTROMAGNETIC STRUCTURE OF ETA AND ETA' MESONS BY 2-PHOTON INTERACTIONS [J].
AIHARA, H ;
ALSTONGARNJOST, M ;
AVERY, RE ;
BARBAROGALTIERI, A ;
BARKER, AR ;
BARNETT, BA ;
BAUER, DA ;
BAY, A ;
BOBBINK, GJ ;
BUCHANAN, CD ;
BUIJS, A ;
CALDWELL, DO ;
CHAO, HY ;
CHUN, SB ;
CLARK, AR ;
COWAN, GD ;
CRANE, DA ;
DAHL, OI ;
DAOUDI, M ;
DERBY, KA ;
EASTMAN, JJ ;
EBERHARD, PH ;
EDBERG, TK ;
EISNER, AM ;
ERNE, FC ;
FAIRFIELD, KH ;
HAUPTMAN, JM ;
HOFMANN, W ;
HYLEN, J ;
KAMAE, T ;
KAYE, HS ;
KENNEY, RW ;
KHACHERYAN, S ;
KOFLER, RR ;
LANGEVELD, WGJ ;
LAYTER, JG ;
LIN, WT ;
LINDE, FL ;
LOKEN, SC ;
LU, A ;
LYNCH, GR ;
MADARAS, RJ ;
MAGNUSON, BD ;
MASEK, GE ;
MATHIS, LG ;
MATTHEWS, JAJ ;
MAXFIELD, SJ ;
MILLER, ES ;
MOSES, W ;
NYGREN, DR .
PHYSICAL REVIEW LETTERS, 1990, 64 (02) :172-175
[2]   THE QUARK TRIANGLE - APPLICATION TO PION AND ETA DECAYS [J].
AMETLLER, L ;
BERGSTROM, L ;
BRAMON, A ;
MASSO, E .
NUCLEAR PHYSICS B, 1983, 228 (02) :301-315
[3]  
BEHREND HJ, 1991, Z PHYS C PART FIELDS, V49, P401, DOI 10.1007/BF01549692
[4]   PSEUDOSCALAR DECAYS INTO 2 PHOTONS IN CHIRAL PERTURBATION-THEORY [J].
BIJNENS, J ;
BRAMON, A ;
CORNET, F .
PHYSICAL REVIEW LETTERS, 1988, 61 (13) :1453-1456
[5]   CHIRAL PERTURBATION-THEORY FOR ANOMALOUS PROCESSES [J].
BIJNENS, J ;
BRAMON, A ;
CORNET, F .
ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1990, 46 (04) :599-607
[6]   ETA-ETA' MIXING ANGLE FROM DUALITY AND QUARK-MODEL [J].
BRAMON, A .
PHYSICS LETTERS B, 1974, B 51 (01) :87-92
[7]   Q2-DUALITY FOR ELECTROMAGNETIC FORM-FACTORS OF MESONS [J].
BRAMON, A ;
MASSO, E .
PHYSICS LETTERS B, 1981, 104 (04) :311-314
[8]   LARGE-ANGLE 2-PHOTON EXCLUSIVE CHANNELS IN QUANTUM CHROMODYNAMICS [J].
BRODSKY, SJ ;
LEPAGE, GP .
PHYSICAL REVIEW D, 1981, 24 (07) :1808-1817
[9]   ISSUE OF PSI-]GAMMA-ETA,GAMMA-ETA' DECAYS AND ETA-ETA' MIXING [J].
CHAO, KT .
PHYSICAL REVIEW D, 1989, 39 (05) :1353-1356
[10]   CHIRAL LOOPS IN PI-0,ETA-0-]GAMMA-GAMMA AND ETA-ETA' MIXING [J].
DONOGHUE, JF ;
HOLSTEIN, BR ;
LIN, YCR .
PHYSICAL REVIEW LETTERS, 1985, 55 (25) :2766-2769