Pseudovector components of the pion, π0→γγ, and Fπ(q2)

被引：122

作者：

Maris, P ^{[1
]}

Roberts, CD ^{[1
]}

机构：

[1] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA

来源：

PHYSICAL REVIEW C | 1998年 / 58卷 / 06期

关键词：

D O I：

10.1103/PhysRevC.58.3659

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

As a consequence of dynamical chiral symmetry breaking the pion Bethe-Salpeter amplitude necessarily contains terms proportional to gamma(5)gamma.P and gamma(5)gamma.k, where k is the relative and P the total momentum of the constituents. These terms are essential for the preservation of low-energy theorems, such as the Gell-Mann-Oakes-Renner relation and those describing anomalous decays of the pion, and to obtaining an electromagnetic pion form factor that falls as 1/q(2) for large q(2), up to calculable In q(2) corrections. In a simple model, which correlates low- and high-energy pion observables, we find q(2)F(pi)(q(2))similar to 0.12-0.19 GeV2 for q(2)greater than or similar to 10 GeV2. [S0556-2813(98)02512-6].

引用

页码：3659 / 3665

页数：7

共 22 条

[1] A MEASUREMENT OF THE SPACE-LIKE PION ELECTROMAGNETIC FORM-FACTOR [J].

AMENDOLIA, SR ;

ARIK, M ;

BADELEK, B ;

BATIGNANI, G ;

BECK, GA ;

BEDESCHI, F ;

BELLAMY, EH ;

BERTOLUCCI, E ;

BETTONI, D ;

BILOKON, H ;

BOLOGNA, G ;

BOSISIO, L ;

BRADASCHIA, C ;

BUDINICH, M ;

CODINO, A ;

DELLORSO, M ;

PIAZZOLI, BD ;

ENORINI, M ;

FABBRI, FL ;

FIDECARO, F ;

FOA, L ;

FOCARDI, E ;

FRANK, SGF ;

GIAZOTTO, A ;

GIORGI, MA ;

GREEN, MG ;

HARVEY, J ;

HEATH, GP ;

LANDON, MPJ ;

LAURELLI, P ;

LIELLO, F ;

MANNOCCHI, G ;

MARCH, PV ;

MARROCCHESI, PS ;

MENZIONE, A ;

MERONI, E ;

MORONI, L ;

MILOTTI, E ;

PICCHI, P ;

RAGUSA, F ;

RISTORI, L ;

ROLANDI, L ;

SALA, S ;

SALTMARSH, CG ;

SAOUCHA, A ;

SATTA, L ;

SCRIBANO, A ;

SPILLANTINI, P ;

STEFANINI, A ;

STOREY, D .

NUCLEAR PHYSICS B, 1986, 277 (01) :168-196

[2] Nonperturbative three-point vertex in massless quenched QED and perturbation theory constraints [J].

Bashir, A ;

Kizilersu, A ;

Pennington, MR .

PHYSICAL REVIEW D, 1998, 57 (02) :1242-1249

[3] ELECTROPRODUCTION OF SINGLE PIONS AT LOW EPSILON AND A MEASUREMENT OF PION FORM-FACTOR UP TO Q2 = 10 GEV2 [J].

BEBEK, CJ ;

BROWN, CN ;

HOLMES, SD ;

KLINE, RV ;

PIPKIN, FM ;

RAITHER, S ;

SISTERSON, LK ;

BROWMAN, A ;

HANSON, KM ;

LARSON, D ;

SILVERMAN, A .

PHYSICAL REVIEW D, 1978, 17 (07) :1693-1705

[4] DETERMINATION OF PION FORM-FACTOR UP TO Q2 = 4 GEV2 FROM SINGLE-CHARGED-PION ELECTROPRODUCTION [J].

BEBEK, CJ ;

BROWN, CN ;

HERZLINGER, M ;

HOLMES, SD ;

LICHTENSTEIN, CA ;

PIPKIN, FM ;

RAITHER, S ;

SISTERSON, LK .

PHYSICAL REVIEW D, 1976, 13 (01) :25-42

[5] Goldstone theorem and diquark confinement beyond rainbow-ladder approximation [J].

Bender, A ;

Roberts, CD ;

vonSmekal, L .

PHYSICS LETTERS B, 1996, 380 (1-2) :7-12

[6] Thermodynamic properties of a simple, confining model [J].

Blaschke, D ;

Roberts, CD ;

Schmidt, S .

PHYSICS LETTERS B, 1998, 425 (3-4) :232-238

[7] Calculation of hadron form factors from Euclidean Dyson-Schwinger equations [J].

Burkardt, M ;

Frank, MR ;

Mitchell, KL .

PHYSICAL REVIEW LETTERS, 1997, 78 (16) :3059-3062

[8] PROOF OF THE NAMBU-GOLDSTONE REALIZATION FOR VECTOR-GLUON-QUARK THEORIES [J].

DELBOURGO, R ;

SCADRON, MD .

JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS, 1979, 5 (12) :1621-1631

[9] PION FORM-FACTOR [J].

FARRAR, GR ;

JACKSON, DR .

PHYSICAL REVIEW LETTERS, 1979, 43 (04) :246-249

[10] DYNAMICAL CHIRAL-SYMMETRY BREAKING AND CONFINEMENT WITH AN INFRARED-VANISHING GLUON PROPAGATOR [J].

HAWES, FT ;

ROBERTS, CD ;

WILLIAMS, AG .

PHYSICAL REVIEW D, 1994, 49 (09) :4683-4693

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