Helicity dependence of γp→Nπ below 450 MeV and contribution to the Gerasimov-Drell-Hearn sum rule

被引：126

作者：

Ahrens, J

Altieri, S

Annand, JRM

Anton, G

Arends, HJ ^{[1
]}

Aulenbacher, K

Beck, R

Bradtke, C

Braghieri, A

Degrande, N

d'Hose, N

Dutz, H

Goertz, S

Grabmayr, P

Hansen, K

Harmsen, J

von Harrach, D

Hasegawa, S

Hasegawa, T

Heid, E

Helbing, K

Holvoet, H

Van Hoorebeke, L

Horikawa, N

Iwata, T

Jennewein, P

Kageya, T

Kiel, B

Klein, F

Kondratiev, R

Kossert, K

Krimmer, J

Lang, M

Lannoy, B

Leukel, R

Lisin, V

Matsuda, T

McGeorge, JC

Meier, A

Menze, D

Meyer, W

Michel, T

Naumann, J

Owens, RO

Panzeri, A

Pedroni, P

Pinelli, T

Preobrajenski, I

Radtke, E

Reichert, E

机构：

[1] Johannes Gutenberg Univ Mainz, Inst Kernphys, D-55099 Mainz, Germany

[2] Ruhr Univ Bochum, Inst Phys Expt, D-44801 Bochum, Germany

[3] Univ Bonn, Inst Phys, D-53115 Bonn, Germany

[4] Univ Erlangen Nurnberg, Inst Phys, D-91058 Erlangen, Germany

[5] Univ Ghent, B-9000 Ghent, Belgium

[6] CEA Saclay, DSM, DAPNIA, SPhN, F-91191 Gif Sur Yvette, France

[7] Univ Glasgow, Dept Phys & Astron, Glasgow, Lanark, Scotland

[8] Univ Gottingen, Inst Phys 2, D-37073 Gottingen, Germany

[9] Lund Univ, Dept Phys, Lund, Sweden

[10] Johannes Gutenberg Univ Mainz, Inst Phys, D-55099 Mainz, Germany

[11] Miyazaki Univ, Fac Engn, Miyazaki 88921, Japan

[12] Russian Acad Sci, INR, Moscow, Russia

[13] Nagoya Univ, Dept Phys, Chikusa Ku, Nagoya, Aichi 464, Japan

[14] Nagoya Univ, CIRSE, Chigusa Ku, Nagoya, Aichi, Japan

[15] Ist Nazl Fis Nucl, Sez Pavia, I-27100 Pavia, Italy

[16] Univ Pavia, Dipartimento Fis Nucl & Teor, I-27100 Pavia, Italy

[17] Univ Tubingen, Inst Phys, D-72076 Tubingen, Germany

来源：

PHYSICAL REVIEW LETTERS | 2000年 / 84卷 / 26期

关键词：

D O I：

10.1103/PhysRevLett.84.5950

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The helicity dependence of the single pion photoproduction on the proton has been measured in the energy range from 200 to 450 MeV for the first time. The experiment, performed at the Mainz microtron MAMI, used a 4 pi-detector system, a circularly polarized, tagged photon beam, and a frozen-spin target. The data obtained provide new information for multipole analyses of pion photoproduction and determine the main contributions to the Gerasimov-Drell-Hearn sum rule and the forward spin polarizability gamma(0).

引用

页码：5950 / 5954

页数：5

共 22 条

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