Single-energy amplitudes for pion photoproduction in the first resonance region

被引：12

作者：

Workman, R. L. ^{[1
]}

机构：

[1] George Washington Univ, Dept Phys, Ctr Nucl Studies, Washington, DC 20052 USA

来源：

PHYSICAL REVIEW C | 2011年 / 83卷 / 03期

关键词：

MULTIPOLE ANALYSIS; PHOTON ENERGIES;

D O I：

10.1103/PhysRevC.83.035201

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：

We consider multipole amplitudes for low-energy pion photoproduction, constructed with minimal model dependence, at single energies. A previous fit making minimal use of Watson's theorem has been reexamined in light of more recent measurements. Problems associated with the choice of a unique solution are discussed. Comparisons with more recent fits to the full resonance region are made. Explanations are suggested for the discrepancies and more precise measurements of the recoil polarization, P, are motivated.

引用

页数：6

共 23 条

[1] Measurement of the G asymmetry for the γp → Nπ channels in the Δ(1232) resonance region [J].

Ahrens, J ;

Altieri, S ;

Annand, JRM ;

Arends, HJ ;

Beck, R ;

Braghieri, A ;

d'Hose, N ;

Dutz, H ;

Goertz, S ;

Grabmayr, P ;

Hasegawa, S ;

Heid, E ;

Holvoet, H ;

Van Hoorebeke, L ;

Horikawa, N ;

Iwata, T ;

Jahn, O ;

Jennewein, P ;

Kondratiev, R ;

Krimmer, J ;

Lang, M ;

Lannoy, B ;

Livingston, K ;

McGeorge, JC ;

Meyer, W ;

Panzeri, A ;

Pedroni, P ;

Pinelli, T ;

Preobrajenski, I ;

Reicherz, G ;

Rosner, G ;

Rost, M ;

Rostomyan, T ;

Ryckbosch, D ;

Schumacher, M ;

Seitz, B ;

Tamas, G ;

Thomas, A ;

de Vyver, RV ;

Walcher, T ;

Zapadtka, F .

EUROPEAN PHYSICAL JOURNAL A, 2005, 26 (01) :135-140

[2] Photoproduction of pions and properties of baryon resonances from a Bonn-Gatchina partial-wave analysis [J].

Anisovich, A. V. ;

Klempt, E. ;

Nikonov, V. A. ;

Matveev, M. A. ;

Sarantsev, A. V. ;

Thoma, U. .

EUROPEAN PHYSICAL JOURNAL A, 2010, 44 (02) :203-220

[3] Analysis of pion photoproduction data [J].

Arndt, RA ;

Briscoe, WJ ;

Strakovsky, II ;

Workman, RL .

PHYSICAL REVIEW C, 2002, 66 (05) :17

[4] COMPLETE EXPERIMENTS IN PSEUDOSCALAR PHOTOPRODUCTION [J].

BARKER, IS ;

DONNACHIE, A ;

STORROW, JK .

NUCLEAR PHYSICS B, 1975, 95 (02) :347-356

[5] Measurement of the E2/M1 ratio in the N->Delta transition using the reaction p((gamma)over-right-arrow,p)pi(0) [J].

Beck, R ;

Krahn, HP ;

Ahrens, J ;

Arends, HJ ;

Audit, G ;

Braghieri, A ;

dHose, N ;

Hall, SJ ;

Isbert, V ;

Kellie, JD ;

MacGregor, IJD ;

Pedroni, P ;

Pinelli, T ;

Tamas, G ;

Walcher, T ;

Wartenberg, S .

PHYSICAL REVIEW LETTERS, 1997, 78 (04) :606-609

[6] EXPERIMENTAL STUDIES OF THE SIGMA, T, P POLARIZATION PARAMETERS AND THE GAMMA-P-]P-PI-O REACTION MULTIPOLE ANALYSIS IN THE 1ST RESONANCE REGION [J].

BELYAEV, AA ;

GETMAN, VA ;

GORBENKO, VG ;

GUSHCHIN, VA ;

DERKACH, AY ;

ZHEBROVSKY, YV ;

KARNAUKHOV, IM ;

KOLESNIKOV, LY ;

LUKHANIN, AA ;

OMELAYENKO, AS ;

RUBASHKIN, AL ;

SOROKIN, PV ;

SPOROV, EA ;

TELEGIN, YN .

NUCLEAR PHYSICS B, 1983, 213 (02) :201-222

[7] MODEL-INDEPENDENT CONNECTIONS BETWEEN PION-PHOTOPRODUCTION AND COMPTON-SCATTERING IN THE DELTA(1232) REGION [J].

BENMERROUCHE, M ;

MUKHOPADHYAY, NC .

PHYSICAL REVIEW D, 1992, 46 (01) :101-116

[8] Completeness rules for spin observables in pseudoscalar meson photoproduction [J].

Chiang, WT ;

Tabakin, F .

PHYSICAL REVIEW C, 1997, 55 (04) :2054-2066

[9] Unitarity and the breakdown of the Fermi-Watson theorem: The (experimental) determination of the Delta deformation [J].

Christillin, P ;

Dillon, G .

JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS, 1996, 22 (12) :1773-1778

[10] EFFECTIVE-LAGRANGIAN APPROACH TO THE THEORY OF PION-PHOTOPRODUCTION IN THE DELTA(1232) REGION [J].

DAVIDSON, RM ;

MUKHOPADHYAY, NC ;

WITTMAN, RS .

PHYSICAL REVIEW D, 1991, 43 (01) :71-94

← 1 2 3 →