Conformal symmetry and pion form factor: Space- and timelike region

被引：13

作者：

Choi, Ho-Meoyng ^{[1
]}

Ji, Chueng-Ryong ^{[2
]}

机构：

[1] Kyungpook Natl Univ, Teachers Coll, Dept Phys, Taegu 702701, South Korea

[2] N Carolina State Univ, Dept Phys, Raleigh, NC 27695 USA

来源：

PHYSICAL REVIEW D | 2008年 / 77卷 / 11期

关键词：

D O I：

10.1103/PhysRevD.77.113004

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We extend a recent analysis of the pion electromagnetic form factor constrained by the conformal symmetry to explore the timelike region. We show explicitly that the timelike form factor obtained by the analytic continuation of the spacelike form factor correctly satisfies the dispersion relation. Our results indicate that the quark spin and dynamical mass effects are crucial to yield the realistic features of the vector meson dominance phenomena.

引用

页数：8

共 49 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] ELECTROMAGNETIC PION FORM-FACTOR IN THE TIMELIKE REGION [J].

BARKOV, LM ;

CHILINGAROV, AG ;

EIDELMAN, SI ;

KHAZIN, BI ;

LELCHUK, MY ;

OKHAPKIN, VS ;

PAKHTUSOVA, EV ;

REDIN, SI ;

RYSKULOV, NM ;

SHATUNOV, YM ;

SHEKHTMAN, AI ;

SHWARTZ, BA ;

SIDOROV, VA ;

SKRINSKY, AN ;

SMAKHTIN, VP ;

SOLODOV, EP .

NUCLEAR PHYSICS B, 1985, 256 (03) :365-384

[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] THE PION ELECTROMAGNETIC FORM-FACTOR IN THE TIME-LIKE ENERGY-RANGE 1.35-LESS-THAN SQUARE ROOT-S-LESS-THAN-2.4 GEV [J].

BISELLO, D ;

BUSETTO, G ;

CASTRO, A ;

MILANI, C ;

NIGRO, M ;

PESCARA, L ;

POSOCCO, M ;

SARTORI, P ;

STANCO, L ;

AJALTOUNI, Z ;

FALVARD, A ;

JOUSSET, J ;

MICHEL, B ;

MONTRET, JC ;

ANTONELLI, A ;

BALDINI, R ;

CALCATERRA, A ;

SCHIOPPA, M ;

AUGUSTIN, JE ;

COSME, G ;

COUCHOT, F ;

DUDELZAK, B ;

FULDA, F ;

GROSDIDIER, G ;

JEANMARIE, B ;

JULLIAN, S ;

LALANNE, D ;

LEPELTIER, V ;

MANE, F ;

PAULOT, C ;

RISKALLA, R ;

ROY, P ;

SZKLARZ, G .

PHYSICS LETTERS B, 1989, 220 (1-2) :321-327

[5] PION ELECTROMAGNETIC FORM-FACTOR IN TIMELIKE RANGE (1.44 DIVIDED-BY 9.0) (GEV)2 [J].

BOLLINI, D ;

GIUSTI, P ;

MASSAM, T ;

MONARI, L ;

PALMONARI, F ;

VALENTI, G ;

ZICHICHI, A .

LETTERE AL NUOVO CIMENTO, 1975, 14 (11) :418-420

[6]

Boschi H, 2003, J HIGH ENERGY PHYS

[7] Light-front hadron dynamics and AdS/CFT correspondence [J].

Brodsky, SJ ;

de Téramond, GR .

PHYSICS LETTERS B, 2004, 582 (3-4) :211-221

[8]

BRODSKY SJ, ARXIVHEPTH0702205

[9] Light-front dynamics and AdS/QCD correspondence:: The pion form factor in the space- and time-like regions [J].

Brodsky, Stanley J. ;

de Teramond, Guy F. .

PHYSICAL REVIEW D, 2008, 77 (05)

[10] Hadronic spectra and light-front wave functions in holographic QCD [J].

Brodsky, Stanley J. ;

de Teramond, Guy F. .

PHYSICAL REVIEW LETTERS, 2006, 96 (20)

← 1 2 3 4 5 →