Magnetic moments of excited baryons

被引：15

作者：

Kotulla, M. ^{[1
]}

机构：

[1] Univ Giessen, Inst Phys 2, D-35392 Giessen, Germany

来源：

PROGRESS IN PARTICLE AND NUCLEAR PHYSICS, VOL 61, NO 1 | 2008年 / 61卷 / 01期

关键词：

magnetic dipole moment; delta resonance;

D O I：

10.1016/j.ppnp.2007.12.048

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：

The explanation of the nucleon's resonance spectrum is a long standing challenge. Magnetic moments of resonances are a valuable testing ground for baryon structure calculations. We have shown in a former experiment that the extraction of the Delta(+)(1232) magnetic dipole moment is feasible via the measurement and analysis of the reaction gamma p -> pi(0)gamma(')p, in which the photon gamma' carries the desired information. Such an experiment has been repeated with high precision using the Crystal Ball and TAPS detectors at the MAMI accelerator facility. Preliminary results will be presented. Furthermore, the perspectives for accessing the magnetic moment of the S-11(1535) resonance in radiative eta photoproduction gamma p -> eta gamma'p will be discussed. (c) 2008 Elsevier B. V. All rights reserved.

引用

收藏

页码：147 / 152

页数：6

相关论文

共 25 条

[1] DESIGN OF A TAGGED PHOTON SPECTROMETER FOR USE WITH THE MAINZ 840MEV MICROTRON [J].

ANTHONY, I ;

KELLIE, JD ;

HALL, SJ ;

MILLER, GJ ;

AHRENS, J .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1991, 301 (02) :230-240

[2] DAPHNE - A LARGE-ACCEPTANCE TRACKING DETECTOR FOR THE STUDY OF PHOTOREACTIONS AT INTERMEDIATE ENERGIES [J].

AUDIT, G ;

BLOCH, A ;

DHOSE, N ;

ISBERT, V ;

MARTIN, J ;

POWERS, R ;

SUNDERMANN, D ;

TAMAS, G ;

WALLACE, PA ;

ALTIERI, S ;

BRAGHIERI, A ;

FOSSATI, F ;

PEDRONI, P ;

PINELLI, T ;

BECHADE, J ;

CARTON, PH ;

CONAT, S ;

FOUCAUD, D ;

GOLDSTICKER, M .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1991, 301 (03) :473-481

[3] 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

[4]

BOILLAT B, 2007, COMMUNICATION

[5] ELECTROMAGNETIC MOMENTS OF THE BARYON DECUPLET [J].

BUTLER, MN ;

SAVAGE, MJ ;

SPRINGER, RP .

PHYSICAL REVIEW D, 1994, 49 (07) :3459-3465

[6] Magnetic dipole moment of the S11(1535) from the γp→γηp reaction [J].

Chiang, WT ;

Yang, SN ;

Vanderhaeghen, M ;

Drechsel, D .

NUCLEAR PHYSICS A, 2003, 723 (1-2) :205-225

[7] Delta baryon magnetic moments from lattice QCD [J].

Cloet, IC ;

Leinweber, DB ;

Thomas, AW .

PHYSICS LETTERS B, 2003, 563 (3-4) :157-164

[8]

DOWNIE E, 2006, THESIS GLASGOW

[9] Magnetic dipole moment of the Δ+(1232) from the γp→γπ0p reaction -: art. no. 065202 [J].

Drechsel, D ;

Vanderhaeghen, M .

PHYSICAL REVIEW C, 2001, 64 (06) :652021-6520211

[10] Inelastic photon scattering and the magnetic moment of the Δ (1232) resonance [J].

Drechsel, D ;

Vanderhaeghen, M ;

Giannini, MM ;

Santopinto, E .

PHYSICS LETTERS B, 2000, 484 (3-4) :236-242