The role of σ-meson in ω → ππγ decays and the coupling constant gωσγ

被引：12

作者：

Gokalp, A ^{[1
]}

Yilmaz, O ^{[1
]}

机构：

[1] Middle E Tech Univ, Dept Phys, TR-06531 Ankara, Turkey

来源：

PHYSICS LETTERS B | 2000年 / 494卷 / 1-2期

关键词：

D O I：

10.1016/S0370-2693(00)01126-6

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study the omega --> pi pi gamma decays by adding to the amplitude calculated within the framework of chiral perturbation theory and vector meson dominance the amplitude of sigma -meson intermediate state. We estimate the coupling constant g(omega sigma gamma) utilizing the experimental value of the omega --> pi (0)pi (0)gamma decay rate. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：69 / 74

页数：6

共 23 条

[1]

AITALA EM, HEPEX0007028 E791 CO

[2] OBSERVATION OF THE OMEGA-]PI(0)PI(0)GAMMA DECAY [J].

ALDE, D ;

BINON, FG ;

BOUTEMEUR, M ;

BRICMAN, C ;

DONSKOV, SV ;

GOUANERE, M ;

INYAKIN, AV ;

KACHANOV, VA ;

KHAUSTOV, GV ;

KNAPP, EA ;

KONDASHOV, AA ;

KULIK, AV ;

LANDSBERG, GL ;

LEDNEV, AA ;

LISHIN, VA ;

PEIGNEUX, JP ;

POLOVNIKOV, SA ;

POLYAKOV, VA ;

POULET, M ;

PROKOSHKIN, YD ;

SADOVSKY, SA ;

SAMOYLENKO, VD ;

SHAGIN, PM ;

SHTANNIKOV, AV ;

SINGOVSKY, AV ;

STROOT, JP ;

SUGONYAEV, VP .

PHYSICS LETTERS B, 1994, 340 (1-2) :122-124

[3] Hadronic structure in the decay τ- → ντπ- π0 π0 and the sign of the tau neutrino helicity -: art. no. 012002 [J].

Asner, DM ;

Eppich, A ;

Gronberg, J ;

Hill, TS ;

Lange, DJ ;

Morrison, RJ ;

Nelson, HN ;

Nelson, TK ;

Roberts, D ;

Behrens, BH ;

Ford, WT ;

Gritsan, A ;

Krieg, H ;

Roy, J ;

Smith, JG ;

Alexander, JP ;

Baker, R ;

Bebek, C ;

Berger, BE ;

Berkelman, K ;

Boisvert, V ;

Cassel, DG ;

Crowcroft, DS ;

Dickson, M ;

von Dombrowski, S ;

Drell, PS ;

Ecklund, KM ;

Ehrlich, R ;

Foland, AD ;

Gaidarev, P ;

Galik, RS ;

Gibbons, L ;

Gittelman, B ;

Gray, SW ;

Hartill, DL ;

Heltsley, BK ;

Hopman, PI ;

Kreinick, DL ;

Lee, T ;

Liu, Y ;

Meyer, TO ;

Mistry, NB ;

Ng, CR ;

Nordberg, E ;

Ogg, M ;

Patterson, JR ;

Peterson, D ;

Riley, D ;

Soffer, A ;

Thayer, JG .

PHYSICAL REVIEW D, 2000, 61 (01) :1-22

[4] INTERMEDIATE VECTOR-MESON CONTRIBUTIONS TO V(0)-]P(0)P(0)GAMMA DECAYS [J].

BRAMON, A ;

GRAU, A ;

PANCHERI, G .

PHYSICS LETTERS B, 1992, 283 (3-4) :416-420

[5] CHIRAL PERTURBATION-THEORY AND RADIATIVE V0-]P0P0-GAMMA DECAYS [J].

BRAMON, A ;

GRAU, A ;

PANCHERI, G .

PHYSICS LETTERS B, 1992, 289 (1-2) :97-102

[6] QCD SUM-RULES IN EXCLUSIVE KINEMATICS AND PION WAVE-FUNCTION [J].

BRAUN, VM ;

FILYANOV, IE .

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1989, 44 (01) :157-166

[7] Review of Particle Physics [J].

The European Physical Journal C - Particles and Fields, 1998, 3 (1-4) :1-783

[8] THE G-OMEGA-RHO-PI COUPLING-CONSTANT FROM QCD SUM-RULES [J].

ELETSKY, VL ;

IOFFE, BL ;

KOGAN, YI .

PHYSICS LETTERS B, 1983, 122 (5-6) :423-426

[9] V0-]P0P0-GAMMA DECAY-RATES [J].

FAJFER, S ;

OAKES, RJ .

PHYSICAL REVIEW D, 1990, 42 (07) :2392-2395

[10] Photoproduction of vector mesons off nucleons near threshold [J].

Friman, B ;

Soyeur, M .

NUCLEAR PHYSICS A, 1996, 600 (04) :477-490

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