The N* physics program at Jefferson Lab

被引：1

作者：

Burkert, Volker D. ^{[1
]}

机构：

[1] Jefferson Lab, 12000 Jefferson Ave, Newport News, VA 23606 USA

来源：

CHINESE PHYSICS C | 2009年 / 33卷 / 12期

关键词：

nucleon resonances; transition form factors; N Delta transition; Roper; magnetic dipole; FORM-FACTORS; ROPER RESONANCE; QUARK-MODEL; ELECTROPRODUCTION; PHOTOPRODUCTION; BARYONS; DECAYS;

D O I：

10.1088/1674-1137/33/12/001

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：

Recent measurements of nucleon resonance transition from factors with CLAS at Jefferson Lab are discussed The new data confirm the assertion of the symmetric constituent quark model of the Roper as nucleon The data on high Q(2) n pi(+) production better constrain the branching ration beta(N pi) and beta(N eta). For the first time, the longitudinal transition amplitude to the S-11(1535) was extracted from the n pi(+) data. Also, new results on the transition amplitudes for the D-13(1520) resonance are presented showing a rapid transition from helicity 3/2 dominance seen at the real photon point to helicty 1/2 dominance at higher Q(2). I also discuss the status of the search for new excited nucleon states

引用

页码：1043 / 1050

页数：8

共 69 条

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