Pion electromagnetic form factor in the instanton vacuum

被引：12

作者：

Blotz, A

Shuryak, E

机构：

[1] Department of Physics, State University of New York in Stony Brook, NY

来源：

PHYSICAL REVIEW D | 1997年 / 55卷 / 07期

关键词：

D O I：

10.1103/PhysRevD.55.4055

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have calculated the three-point correlation function for the electromagnetic interaction of the pion in an ensemble of instantons and anti-instantons, modeling the QCD vacuum. The results are well described by a pion pole, and the pion form factor is extracted, nicely following epsilon standard monopole fit. The experimental data on the form factor are well reproduced, provided an average instanton size is fixed at <(rho)over bar>=0.35+/-0.03 fm, the same as found for a variety of other correlation functions and was found on the lattice.

引用

页码：4055 / 4065

页数：11

共 34 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]

ANDERSEN W, 1995, BUHEPP9502

[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] PROPAGATION FUNCTIONS IN PSEUDOPARTICLE FIELDS [J].

BROWN, LS ;

CARLITZ, RD ;

CREAMER, DB ;

LEE, C .

PHYSICAL REVIEW D, 1978, 17 (06) :1583-1597

[5] TOWARD A THEORY OF STRONG INTERACTIONS [J].

CALLAN, CG ;

DASHEN, R ;

GROSS, DJ .

PHYSICAL REVIEW D, 1978, 17 (10) :2717-2763

[6]

Christov CV, 1996, PROG PART NUCL PHYS, V37, P91, DOI 10.1016/0146-6410(96)00057-9

[7] EVIDENCE FOR THE ROLE OF INSTANTONS IN HADRON STRUCTURE FROM LATTICE QCD [J].

CHU, MC ;

GRANDY, JM ;

HUANG, S ;

NEGELE, JW .

PHYSICAL REVIEW D, 1994, 49 (11) :6039-6050

[8]

DIAKONOV DD, 1995, UNPUB E FERM SCH VAR

[9]

DIAKONOV DI, 1985, ZH EKSP TEOR FIZ, V62, P204

[10] MASS CORRECTIONS TO SOME INSTANTON EFFECTS [J].

DIN, AM ;

FINJORD, J ;

ZAKRZEWSKI, WJ .

NUCLEAR PHYSICS B, 1979, 153 (1-2) :46-60

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